| Observation Date |
Observation Time |
Precipitation |
Snowfall |
Snowfall SWE |
Snow Depth |
Snow SWE |
Notes |
| 10/1/2010 |
7:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/30-our beautiful weather continues (courtesy of strong high pressure firmly in place the results of which are warm, dry, stable conditions) with not a cloud in the sky. However, just to the NW of Twin Peaks in the West was what appeared to be clouds on the NW horizon that extended near the summit area of Birch Mountain but upon closer observation turned out to be smoke. Temperatures are in the mid to upper 70's along with a gentle breeze from the West. BP change from this morning: (then 30.05"R, now 29.94"R). Currently [10/01], we are off to another great start with clear skies, no precipitation in the last 24, moderate haze, and light breezes from time to time. They are from the WNW at 4 mph, then from the West at 4 mph, wind gust: out of the WNW to 12 mph, humidity 67%, dew point 46°, current freezing level 14,500', temperature 52.9°, and the barometric pressure 30.06" and falling. Some interesting EOM stats for September: 1) total rainfall: 0.98" or 245% of average, 2) number of days with no precipitation: 24, 3) high BP: 30.28" on 9/02, 4) low BP: 29.70" on 9/19, 5) date with low BP and no precipitation: 29.80" on 9/20, 6) date with high BP and precipitation: 29.96" on 9/17, 7) average BP: 28.99", 8) average change in AM to PM BP: AM 28.99", PM 29.92" or a change of +0.93", 9) average morning temperature: 56.4°, 10) high morning temperature: 66.2° on 9/04, and 11) low morning temperature 48.9° on 9/22. |
| 10/2/2010 |
7:16 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 10/01-no change from earlier this morning as our beautiful weather continues for at least one more day. Skies are clear, temperatures are in the upper 70's to low 80's along with occasional air movement from time to time. BP change from this morning: (then 30.06"F, now 29.98"R). Currently [10/02], "one more day of unusually warm October weather awaits the populace of the Inland NW"! The haze is moderate to light on the "heavy" side. Although no precipitation was recorded during the last 24; condensation and dew were, once again, observed on the gauge and ground respectively. The wind has picked from earlier velocities which were from the SSW at 4-5 mph, wind gust: out of the NNW to 14 mph, humidity 71%, dew point 50°, current freezing level 14,000' {beginning this evening, another downturn is in the forecast and will bottom out at about 5000' on Monday, stall at 6500' on Tuesday and Wednesday before rebounding on Thursday to about 12,000' as another ridge of high pressure will assert itself for the remainder of the week}, temperature 54.3°, and the barometric pressure 30.05" and falling. The Western Hemisphere satellite image of the Gulf is revealing a few interesting scenarios that will be affecting our area early next week by way of much cooler temperatures [15 to 20 degrees cooler than what we are currently experiencing]. |
| 10/3/2010 |
7:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 10/02-what! a few atmospheric blemishes in our otherwise gorgeous weather we have been experiencing for the last five days? Yes, and other than a few bands of mid level clouds from the NW to the North, the skies remain cloud free, temperatures are in the low to mid 80's (a few degrees warmer than yesterday at this time) with virtually no air movement. BP change from this morning: [then 30.05"F, now 29.89"F]. Earlier this morning [10/03], we had mostly overcast skies of the Altocumulus Castellanus {meaning from a common cloud bank such as growing turrets} variety with partial clearing to the NW, North and NE. Currently, we now have completely overcast skies except for a few cloud breaks to the NW. There has been no precipitation in the past 24, and only slight air movement at the present time. It is however from the NNW at 1 mph, wind gust: out of the NNW to 12 mph, humidity 62%, dew point 47°, current snow level 11,000' {yesterday, it was 14,000}, temperature 59°, and the barometric pressure 29.84" and falling. The West Coast infrared along with the infrared satellite images of
WA reveal several bits of moisture to our (Chelan county) South, SE, East and NE [this one being located in Southern B.C.]. So, what happened to cause our overcast conditions? The high pressure ridge that was responsible for our beautiful weather "shifted slightly East with a deep SW flow ahead of the offshore trough moving over the area overnight. This resulted in drawing some of the mid upper level moisture currently over Northern NV and CA into the inland NW overnight". In other words, both the trough and moisture have taken up residence over the PNW. |
| 10/4/2010 |
7:07 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 10/03-since this morning, a change has occurred in the cloud cover from Altocumulus Castellanus to Altostratus with partial clearing in the NW to the North. As the afternoon progressed however, the "partial clearing" expanded to include the South and at the same time extended a short distance toward the East. Within this larger expansion, Cirrus were in abundance, as well as a few Contrails, and some scattered Altocumulus. Temperatures were in the mid 70's with very light air movement. BP change from this morning: ( then 29.84"F, now 29.80"F). Currently [10/04], we have scattered high and mid level clouds under partly cloudy skies, no precipitation in the last 24, and the wind velocity has noticeably increased since earlier this morning when it was from the NNW at 4-7 mph, wind gust: out of the West to 16 mph, humidity 55%, dew point 42°, current snow level 6000' {yesterday, it was 11,000'. This amounts to a fairly steep drop of 208.3'/hr in just a 24 hour period!}, temperature 57.9°, and the barometric pressure 29.84" and falling. The satellite image of WA, reveals a steep SE [Whitman county] to NW diagonal bisecting Stevens and Ferry counties then just nudging across the WA/Southern B.C. border. This is the closest moisture to our area . |
| 10/5/2010 |
7:09 AM |
0.00 |
0.0 |
M |
M |
M |
Mid afternoon weather for 10/04-Cirrus, Cirrostratus (along with an immense halo plus filtered sunshine) and Contrails dominate the skies this afternoon. Temperatures are in the upper 60's to low 70's {several degrees cooler than yesterday at this time and 10 -12 degrees cooler than yesterday's high temperature} along with refreshing breezes from the West and NW. BP change from this morning: [then 29.84"F, now 29.98"R). Currently [10/05], we begin the second lap of clear skies and warmer weather as a nice ridge of high pressure asserts itself for the next few days anyway. No precipitation during the last 24, and light winds are visible (quite a contrast to last evening when they were brisk and gusty). They are from the NNW at 4 mph, wind gust: out of the NNW to 15 mph, humidity 37% [the last reading of this magnitude was recorded on 9/15/10 at 37%], current snow level 10,000' {yesterday, it was 6000'}, temperature 51.3°, and the barometric pressure 30.33" and rising {WOW! this is an increase of 0.49" from yesterday's reading of 29.84" in the span of just 24 hours!}. The Western Hemisphere satellite image of the Gulf reveals a very impressive set up taking place. There are three waves each one less intense than it predecessor. The one of interest is the first. From SE AK, it extends in a gentle arc to the Yukon/NW Territory boundary before turning South into central B.C. Within this behemoth are several dark yellow bands that indicate moderate to heavy moisture. As mentioned above there are two additional waves within which very cold air is located. It is likely that this scenario will be affecting our area by early next week. |
| 10/6/2010 |
7:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
There are two very impressive satellite images in very different locales. First up is the Western Hemisphere satellite image of the Gulf where three waves of moisture and a trough containing very cold air is clearly visible. This scenario could affect our area early next week. The other features a closed low in the SW US {which is affecting many of the states in that region} and has remained there for several days. Mid afternoon weather for 10/05-we are enjoying a gorgeous autumn afternoon with totally clear skies (this is in sharp contrast to yesterday when an abundance of high level clouds were visible), temperatures in the low 70's along with slight air movement. BP change from this morning: (then 30.33"R, now 30.31"R). Currently [10/06], we have clear skies, no precipitation in the last 24; although there was moderate condensation on the gauge, and very little air movement. What little we do have is from the NNW at 1 mph, then from the WNW at 7 mph, wind gust: out of the NW to 10 mph, humidity 67%, dew point 37°, current freezing level 14,000' [yesterday, it was 10,000'], temperature 44.2°, and the barometric pressure 30.28" and rising. |
| 10/7/2010 |
7:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Both the Western Hemisphere, infrared and water vapor satellite images of the Gulf, the Western US and Canada reveal some impressive happenings. In the Gulf, the trough is clearly visible and remains almost stationary while the West side of it is being sharply deflected North into the climes of NC B.C., SE Yukon and the NW portion of the NW Territories. Also visible are the waves of moisture that are riding up and over the high pressure (in the central US) as they pass through the Western Provinces of Canada. The other one is the closed low which has continued to remain intact and at the same time move Northward from NV to affect our weather to some extent in such a short period of time. The closest "weather" to our neck of the woods is located in the SE portion of the state and is affecting Asotin, Garfield and SW Columbia counties. Mid afternoon weather for 10/06-our clear skies continue except for some mid level clouds (Altostratus) in the SE. These are quite possibly associated with the closed low {mentioned earlier this morning} that is forecast to move Northward. About all that will occur tonight is an increase in high level clouds in general, as well as some mid level clouds over the SE zones of WA. Otherwise, no significant weather is expected in our area. So, temperatures are in the mid 70's with little air movement. BP change from earlier this morning: (then 30.28"F, now 30.01"R). Currently, we have an Altostratus overcast, no moisture in the past 24, light to moderate haze, and very little air movement. What we have is from the WNW at 2 mph, wind gust: out of the NW to 13 mph, humidity 64%, dew point 39°, current freezing level 12,000' [yesterday, it was 14,000'], temperature 48°, and the barometric pressure 29.96" and falling. |
| 10/8/2010 |
7:16 AM |
0.00 |
0.0 |
M |
M |
M |
There are two waves of moderate size located near our area. They appeared to have slid South of the parent wave of moisture located in NW Alberta. The first is just NW of our area and moving from Southern B.C. into Whatcom and Skagit counties. The other is effecting the SW portion of Chelan county before extending South into OR. The Western Hemisphere satellite image of the Gulf shows a relatively large system with a fair amount of moisture associated with it approaching the coast. Right behind it is another smaller system that features moderate to heavy moisture on the Western end whereas from that point Eastward, almost no moisture was observed. Mid afternoon weather for 10/08-a moderate sized partial clearing is almost directly overhead similar in appearance to an eye of a hurricane. Otherwise, the skies are dominated by both Stratocumulus and scattered Altocumulus Perlucidus varieties. As the afternoon progressed however, the haze has become worse since this morning, and the partial clearing gave way to the Stratocumulus Stratiformis variety. Temperatures are in the upper 60's with very little air movement. BP change from this morning: (then 29.96"F, now 29.93"F). From mid to high level clouds this morning [10/08],to partly cloudy, to an Altostratus overcast. We have had no precipitation in the last 24, and very little air movement. What little "velocity" we have is from the NNW at 1 mph, wind puff: out of the NW to 8 mph, humidity 55%, dew point 43°, current snow level 9000' {yesterday, it was 12,000'}, temperature 54.5°, and the barometric pressure 30.09" and falling. |
| 10/9/2010 |
7:26 AM |
0.03 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere satellite image reveals a very active Gulf of Alaska. There are three waves of moisture the first of which is located in a NW sector of B.C. and then in a gentle arc affects SE AK, extends across the Southern portion of the Yukon, brushes the SW corner of the NW Territories before turning South (in a narrow band) from NW to SW B.C. The second one [closest to WA] features two waves that will be deflected into Central and Southern B.C. and we will be left high and dry for the time being. Also of interest, is the trough and the cold air visible within it. Mid afternoon weather for 10/08-what a change from this morning (shortly before noon) when we changed from an Altostratus overcast to Cirrostratus {complete with Contrails and one of the largest halos' I've observed). We now have scattered Cirrus and Cirrostratus under partly cloudy skies. Temperatures are in the low 70's along with an occasional breeze from the East and SE. Currently [10/09], we have overcast skies, very little air movement, and the ridges around the valley are obscured from view. However it is from the ESE at 2 mph, wind puff: from the East to 7 mph, humidity 84%, dew point 50°, current snow level 9500', temperature 56.3°, and the barometric pressure 30.22" and rising. |
| 10/10/2010 |
7:17 AM |
0.06 |
0.0 |
M |
0.0 |
M |
About the only noticeable action in the Gulf was revealed by both the infrared and water vapor satellite images where a wave of Pacific moisture was being pushed into B.C. and NW Alberta. At the same time very cold air has moved closer to the WA coast and will impact our area early this week. Mid afternoon weather for 10/09-skies remain overcast with off and on light rain showers. Not much change in the temperature as it reached the low 60's (rising only 6.7° from the first reading earlier this morning) and virtually no air movement. Although it has become lighter to the SW and West on this overcast morning 10/10], there is not any "blue" to be found! The haze has improved since yesterday from moderate to light, and we have light breezes from time to time. They are from the North at 4 mph, wind gust:out of the NW to 12 mph, humidity 86%, dew point 54°, current snow level 8500' {yesterday, it was 9500'}, temperature 59°, and the barometric pressure 30.09" and falling. |
| 10/11/2010 |
7:10 AM |
0.00 |
0.0 |
M |
M |
M |
The Western Hemisphere satellite image of the Gulf show three things worth noting. The first of which is a relatively large wave that has two moderate sized areas of moisture located within it headed our direction. At this time however, it appears that it will make landfall in B.C. Just North of this wave cold air remains visible which is the second feature. Farther out (West of the Aleutians) is yet another large wave of moisture, and it too has a moderate to heavy amount of moisture associated with it. Mid afternoon weather for 10/10-it would appear that we have an Altostratus overcast along with scattered lower level Cumulus. The temperature struggled to reach the mid 60's as this time the rise was only 5.6° from the first recording earlier this morning. In addition, we have light winds mainly from the West and NW. Currently [10/11], we have beautiful clear skies {quite a contrast to yesterday at this time when it was a grey overcast}, no moisture in the past 24, and light breezes from time to time. They are from the NNW at 6 mph, wind gust: out of the NW to 15 mph, humidity 53% (compared to 86% yesterday), dew point 32° [yesterday, it was 54°], current snow level 4500' {yup! yesterday it was 8500'}, temperature 49.1°, and the barometric pressure 30.33" and rising.
|
| 10/12/2010 |
7:19 AM |
0.00 |
0.0 |
M |
M |
M |
The Western Hemisphere satellite image of the Gulf show some interesting happenings. The first regards the Pacific wave that was headed in our direction but probably would make landfall in B.C.(that was yesterday). Not only did it make landfall up there, it is so large that only the NE and extreme SE portion of B.C. is cloud free. In addition, cold air continues to be visible [and has been for several days now]. So, the mid to high level clouds in our area are associated with the behemoth in B.C. Mid afternoon weather for 10/11-we have clear skies (not a cloud in the sky!), temperature reached the mid 60's {by way of contrast, the temperature this morning was 10° cooler than yesterday at this time} along with a light breeze from time to time. Currently [10/12], we have a sky dominated by high level clouds (Cirrus/Cirrostratus), no precipitation in the last 24, and very little air movement. It is from the WNW at 1 mph, wind gust: out of the NW to 10 mph, humidity 70%, dew point 38°, current snow level 7000' [yesterday, it was 4500'], temperature 45.3° and the barometric pressure 30.44" and rising {this is one of the higher readings observed in awhile. On 1/06/10, a recording of 30.42" and rising was observed}. |
| 10/13/2010 |
7:15 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The West coast infrared satellite image of WA shows three waves/systems of which two are laden with moderate to heavy moisture. All three are located in B.C. The one of interest (which is just NE of our area) is affecting the Eastern half of Okanogan county, all but the SE portion of Ferry County and just the NW part of Stevens county. However, all of the main action is hapenning just across the border in B.C. In brief, the Western Hemisphere Satellite image of the Gulf shows a lot of moisture and cold air in the neighborhood. Of interest is the strength of the current high pressure ridge which is forcing a wave of moisture and other waves/sytems to the North for the time being. Mid afternoon weather for 10/12-whereas this morning's cloud cover was dominated by high level clouds {Cirrus/Cirrostratus from the SW to the SE} and to a lesser degree some mid level clouds, it is now the other way around. Temperature is in the mid 60's along with very little air movement. Currently [10/13], in a North/South line extended East, we have Cirrus/Cirrostratus clouds; however that same line extended from the SW to the North is dominated by Altocumulus. So, there has been no moisture in the last 24, and the "winds" are almost non existant. They are however, from the NNW at 6 mph, wind gust: out of the NNW to 11 mph, humidity 84% [yesterday, it was at 70%], dew point 38°, current snow level 10,000' {it was 7000' yesterday}, temperatue 42.8°, and the barometric pressure 30.36" and rising. |
| 10/14/2010 |
7:30 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere satellite images of the "Gulf", infrared and water vapor pictures of the Western US and Canada all concur on a wave/system being pushed across central B.C. into Northern Alberta as a result of strong high pressure in place for one more day. Also of interest, WA is just being brushed by this event affecting the coastal counties (Clallam, Jefferson, and Grays Harbor as well as NWestern Whatcom county). Mid afternoon weather for 10/13-other than scattered Cirrus to the South and East, we enjoyed a very pleasant autumn afternoon that included mostly clear skies. This is in response to "high level clouds shifting to the North and high pressure that continues to build into the region". Temperatures are in the mid 60's with little to no air movement. From some Altocumulus in the SW to the East earlier this morning [10/14], to scattered Cirrus and Cirrostratus, at the present time, under partly cloudy skies. There has been no precipitation in the last 24, and no wind velocity was recorded other than the wind gust which is out of the NNW to 11 mph, humidity 85%, dew point 38°, current snow level 10,000' {believe it or not, snow is in the forecast for up to 3 inches on Snoqualmie Pass during the overnight !!}, temperature 41.2°, and the barometric pressure 30.18" and falling. |
| 10/15/2010 |
7:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere satellite image of an active Gulf shows three very large waves of Pacific moisture (each one more intense than it's predecessor) bearing down on saturated B.C. The first one is just off the B.C. coast and has virtually no moisture associated with it. The second one is located near the middle of the Aleutians and in a North South direction is well laden with moisture. Though smaller than it's predecessors, number three has several moderate to heavy cells embedded in the already moisture laden wave. Mid afternoon weather for 10/14-most of the high clouds of this morning have since disappeared except for some scattered Cirrus and Cirrostratus in the West to the NW. Scattered lower level Cumulus are also visible in the NW under otherwise mostly clear skies. Temperatures are in the mid 60's along with light breezes. In approximately two hours however, the sky was completely saturated by Cirrus/Cirrostratus clouds. Other than some high level clouds from the SW to the East, we have basically clear skies this morning [10/15]. There has been no precipitation in the past 24 {we are half way through the month and only two rain events have been recorded}, and light wind velocities although they are forecast to become more "breezy" due to an "exiting cold front". For the time being, they are from the West at 5 mph, then from the WSW at 5 mph, wind gust: out of the WNW to 20 mph, humidity 47% [yesterday it was 85%], dew point 30°, current snow level 4000' {this represents a steep drop of 250'/hour in just a 24 hour period from yesterday's snow level of 10,000'}, temperature 45.5°, and the barometric pressure 30.22" and rising. |
| 10/16/2010 |
7:14 AM |
0.00 |
0.0 |
M |
M |
M |
Although "dry and seasonal conditions will be in place for the weekend", both the infrared and water vapor satellite images of the Western US and
Canada show moisture going right around us. e.g., one band of moisture covers most of OR, except for the NW portion, and in a NE diagonal extends through central ID (also affecting the SE quadrant of WA from Klickitat to Spokane counties) into NW MT before bending in a NW direction into B.C. and Alberta. Mid afternoon weather for 10/15-other than a lengthy band of Cirrus and Cirrostratus near the SW to SE horizons, we have mostly clear skies on a gorgeous autumn afternoon with temperatures in the mid 60's along with very light breezes from the North. Currently [10/16], other than some mid level clouds in the South to the SE and and toward the North, we have mostly clear skies. There has been no moisture in the past 24, the "winds" have picked up somewhat in velocity since earlier this morning when they were from the NNW at 4 mph, wind gust: out of the NNW to 12 mph, humidity 74%, dew point 30°, current snow level 6500' {yesterday, it was 4000') temperature 37.6° (brr-r-r! first time it has been this cool since 4/03/10 when the reading was 37.9°) and the barometric pressure 30.23" and rising. |
| 10/17/2010 |
7:19 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere satellite and both the infrared and water vapor images of the Gulf show two very impressive waves of moisture near the vicinity of WA. The first involves several pockets of moisture in a broad band that affects as many as eight states from Northern CA and in a gradual NE diagonal affects all of OR, except for the NW portion, all of ID, except the Northern panhandle, and from the SW to NE part of MT before extending East into the Dakotas. The second and more organized of the two, has it's origin just South of AK, and has the appearance of a candy cane! This wave has a copious amount of moisture and several moderate to heavy cells embedded within it taking up residence just off the coast of B.C. from the Northern climes all the way to just NW of Vancouver Island. Also visible near this behemoth is the reappearance of cold air. Mid afternoon weather for 10/16-other than some scattered Cirrus in the SW and SE, we had mostly clear skies on yet another beautiful autumn afternoon. Temperatures are in the low 60's along with a nice breeze mainly from the SE but occasionally from the South. As the afternoon progressed however, the mostly clear conditions gradually yielded to an invasion of Cirrus, Cirrostratus and even a few Contrails. Currently [10/17], we have a few Contrails in the East under otherwise clear skies, no moisture in the last 24, and little air movement. It is however from the NNW at 4-7 mph, wind gust: out of the NW to 10 mph, humidity 72%, dew point 30°, current snow level 7500', temperature 36.3° {these lower temps are a result of radiational cooling}, and the barometric pressure 30.26" and rising. |
| 10/18/2010 |
7:19 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The West Coast infrared and water vapor images of the Western US and Canada show a wave of moisture moving across central B.C. from which a moderate band of moisture broke away from the parent band and it is this one that deserves some attention. Although the bulk of it is in B.C., it is affecting Eastern Whatcom, Skagit, and Snohomish counties as well as NE King county, most of Chelan county, all of Okanogan county except for the extreme Southern boundary and in a North/South direction, Western Ferry county. The current cloud conditions are associated with this rather moderate band of moisture. The Western Hemisphere satellite image of the Gulf visibly pulls together what has been described above. In addition, this band of moisture extends from B.C. in a SW direction to just North of Oahu, HI and has the appearance of a "dumbbell" with moisture appearing on both ends and very little in the middle. Mid afternoon weather for 10/17-other than widely scattered Cirrus and Cirrostratus in the NW to the East and toward the SE, we have for the most part clear skies on another beautiful autumn afternoon. Temperatures are in the low to mid 60's with only slight air movement from time to time. Currently [10/18], we have an Altostratus overcast, light to moderate haze, no precipitation in the last 24, and very little air movement. It is however from the NNW at 2 mph, wind gust: out of the North at 11 mph, humidity 67%, dew point 32°, current snow level 9500' (yesterday, it was 7500'), temperature 41.2°, and the barometric pressure 30.28" and rising.
|
| 10/19/2010 |
7:17 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere satellite image of the Gulf shows some very interesting activity taking place. Yesterday, the band of moisture referred to as a "dumbbell" in appearance and extending from central B.C. to just North of the Hawaiian Islands presents us with three observations. The Southern portion has moved slightly to the East and suggests the possibility of uniting with a potent system just to the SE. Not only is this band riding up the Western side of the high pressure ridge, but is at the same time preventing the cold air behind it from affecting our area. Farther out (just West of the Aleutians), there appears to be another trough well laden with moisture and very cold air associated with it. Mid afternoon weather for 10/18- from an Altostratus overcast earlier this morning to a Cirrostratus "covering" {including an immense halo and filtered sunshine} then back to Altostratus! except for partial clearing to the South. Temperatures are in the low 60's with very little air movement. Currently [10/19], we have partly cloudy skies the dominant variety being Cirrus. There has been no moisture in the past 24, and very little air movement. What we have, for example, is from the NNE at 0 mph, then from the West at 1 mph, wind puff: out of the NW to 4 mph, humidity 78%, dew point 37°, current snow level 11,500' [yesterday, it was 9500'], temperature 41.2°, and the barometric pressure 30.26" and rising. |
| 10/20/2010 |
7:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
WOW! The Western Hemisphere satellite image show active, impressive images of the Gulf this morning. The wave of Pacific moisture that has been affectionately referred to as "dumbbell" has undergone some minor changes in the last 24. The Northern end has shifted to cover the entire northern half of B.C. while the southern end has since moved NE of the Hawaiian Islands to join forces with the system located [yesterday] just SE of HI. Because of high pressure firmly in place, moisture (from this band) continues to be deflected into B.C. Farther out, another large trough packed with copious moisture on the Western side {including two large moderate to heavy cells embedded within it} makes a very impressive sight indeed. It is this trough that will be affecting our weather this weekend and early next week. Mid afternoon weather for 10/19-although we have a partly cloudy sky with some Altostratus to the North, widely scattered Cirrus are the dominant variety on this pleasant afternoon with temperatures reaching the mid 60's along with very little air movement due to "high pressure strengthening over the PNW and a closed low dropping South along the CA coast resulting in dry and very stable conditions". Currently [10/20], with the exception of some scattered clouds to the South and North, we basically have clear skies, light to moderate haze, no precipitation in the last 24, and virtually no air movement. What we do have is from the West at 1-4 mph, wind puff: out of the NW to 9 mph, humidity 85%, dew point 39°, current snow level 12,000, temperature 40.5°, and the barometric pressure 30.12" and falling. |
| 10/21/2010 |
7:16 AM |
0.00 |
0.0 |
M |
0.0 |
M |
WOW! The Gulf is brimming with action according to Western Hemisphere satellite images of the above mentioned locale. The band of moisture affectionately known as "dumbbell" has undergone a few major changes. One being a significant movement East (from yesterday's locale to just off the Western US coast) both to the middle and Southern sections while the northern portion is just on the central coastline of B.C; although, moisture is still currently being deflected through central and northern Alberta and Saskatchewan respectively. Farther out, is the "big puppy"! This rascal is a behemoth and with copious amounts of moisture including moderate to heavy cells embedded within it will be affecting our weather this weekend into early next week. Mid afternoon weather for 10/20-"before deterioration begins on Friday into a more active fall pattern, strong high pressure will continue over the inland NW through Thursday with mainly clear skies and above normal temperatures" which is exactly what we are experiencing except for some widely scattered Cirrus. Temperatures are in the low to mid 60's along with minimal air movement. Currently [10/21], we have clear skies, moderate haze, no precipitation in the last 24, and very little air movement. What we have is from the West at 3 mph, wind puff: out of the NNW to 9 mph, humidity 83%, dew point 39°, current snow level 11,000' {yesterday it was 12,000. This will be the last day of pleasant conditions for awhile}, temperature 40.5°, and the barometric pressure 29.96" and falling. |
| 10/22/2010 |
7:18 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Once again, the Gulf is packed with energy according to the Western Hemisphere satellite image. There are numerous waves of moisture affecting the Aleutians, Southern AK and the Yukon, B.C. and Alberta. However, the big kahuna of interest is H U G E! and is loaded with copious amounts of moisture and moderate to very heavy cells of precipitation embedded within this behemoth. This system will be accompanied by very strong winds and much colder air. All this will be affecting our area by the latter half of the weekend. Mid afternoon weather for 10/21-other than Cumulus clouds appearing on the Western to NW horizons as well as in the NW, we are still enjoying the pleasant effects of high pressure for a few more hours with mostly clear skies and very calm autumn conditions. Temperatures are in the low to mid 60's along with very little air movement. Currently [10/22], the present cloud conditions (some Cirrus, Altostratus, scattered lower level Cumulus and a rather large cloud deck of Cumulus from the NW to the East) are much different than earlier this morning. There has been no precipitation in the past 24, the haze/smoke is moderate, and the air movement is slight at best. It is however from the the South at 2 mph, then from the SSW at 1 mph, wind puff: out of the NE to 8 mph, humidity 70%, dew point 43°, current snow level 5500' {it crashed from yesterday's reading of 11,000'}, temperature 46.6°, and the barometric pressure 29.88" and falling. |
| 10/23/2010 |
7:07 AM |
0.00 |
0.0 |
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This morning, the Gulf is very active with waves/systems according to the Western Hemisphere satellite image! To the North (just off the NW
B.C. coast) are two waves that resemble goalposts with the Eastern one affecting NW B.C. and SE AK then a break followed by the Western goalpost. Farther West, a large pool of cold air is also visible. The wave/system on the Southern end of the above mentioned information has copious moisture, very strong winds, and much cooler air associated with it. Right behind it is another lengthy band laden with moisture and a few cells of moderate to very heavy precipitation embedded within it. Mid afternoon weather for 10/22-compared to earlier this morning when the sky was partly to mostly cloudy, it has turned out to be a very pleasant afternoon indeed under partly cloudy skies {that consists of scattered Cirrus and Cirrostratus in addition to widely scattered Cumulus}, temperatures in the mid to upper 60's with an occasional breeze. Currently [10/23], under partly cloudy skies, we have mid and high level cloudiness along with scattered lower level Cumulus. There has been no precipitation in the last 24, and very little air movement. Although it will remain calm for today, it will become very windy/gusty for most of the day tomorrow as the Northern jet will be directly over WA. What we have is from the NNW at 3 mph, wind gust: out of the NW to 10 mph, humidity 72%, dew point 38°, current snow level 5500', temperature 48.6°, and the barometric pressure 29.82" and falling. |
| 10/24/2010 |
7:18 AM |
0.06 |
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M |
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Both the infrared and water vapor satellite images of the Western US and Canada illustrate a very interesting phenomenon. The wave of moisture responsible for the rain in our area was pushed to the East by NE and separated or sheared from the parent band due to the influx of very cold dry air. In addition, the Northern jet has dropped South of WA into central OR. The result being that the system is now affecting Northern CA, all of OR except for the NW portion and a small part of NE OR immediately South of Asotin, Garfield, Columbia and Walla Walla counties of WA, all of ID except the panhandle, most of NV and Western UT with still a small portion of the system yet to move onshore. Mid afternoon weather for 10/23-on a partly cloudy autumn afternoon, no precipitation has been observed at this station and there is a hint of coolness in the air even though the temperature is in the low 60's with minimal air movement. Currently [10/24], we have partly cloudy skies and very little air movement; although, it is forecast to become windy with gusts later this afternoon. What we have is from the NNE at 2-3 mph, wind gust: out of the East to 23 mph, humidity 89%, dew point 45°, current snow level 4500' {yesterday it was 5500'}, temperature 50.5°, and the barometric pressure 29.37" and falling [the last time the BP was this low was back on 4/28/10, when the reading was 29.38" and rising]. |
| 10/25/2010 |
7:14 AM |
0.00 |
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Most of the active weather is occurring in the mid West. In our neck of the woods, especially in the Gulf, there is not a lot of activity taking place. There are however two waves just South of and parallel to the Aleutians that may be heading in our direction (WA) later in the week. Between the first wave and the West coast is a very large pool of cold air which is currently affecting the higher elevations of WA; however, by tomorrow, there is indications that it will be directed into OR as the Northern jet sags South. Mid afternoon weather for 10/24-at this time, the weather is quite active even though no precipitation has been recorded at this site. From the NW to the NE, it looks moderately threatening with high level Cirrus and lower level Cumulus. In the SW to the East however, there is a large area of Altostratus that appear very threatening in the SE while to the SW are lower level Cumulus. Active weather is occurring to the NW and SW where it is snowing in the higher elevations near Leavenworth and on Mission Ridge near Wenatchee respectively. A rather pleasant afternoon, after all, with temperatures in the low 60's along with light breezes from the South. Currently [10/25], we have scattered Cirrus and Cirrostratus along with scattered low to mid level clouds. There has been no moisture in the past 24 (although it sprinkled briefly in the last few minutes), and very little air movement. What we have is from the West at 0 mph, then from the WSW at 2 mph, wind puff: out of the NE to 9 mph, humidity 84%, dew point 38°, current snow level 4500', temperature 42.8°, and the barometric pressure 29.61" and rising. |
| 10/26/2010 |
7:01 AM |
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Although there are scattered bits of energy in and near WA, one piece has moved onshore and is affecting all the coastal counties of Western WA (except for NW Clallam and Jefferson counties to the North and Southern Wahkiakum county to the South) with a small portion of energy yet to move onshore. Between the above mentioned energy, there is a small break before another wave approaching our area will make landfall by about Thursday. In addition, the Northern polar jet has sagged South of WA into OR leaving us high and dry as far as wind is concerned-for awhile! Mid afternoon weather for 10/25-on this autumn afternoon, we have a grey, cool Stratus overcast which could be associated with a "wave moving through Southern WA". Temperatures are in the low 50's {this is approximately ten degrees cooler than yesterday at this time} along with minimal air movement. Currently [10/26], we have scattered mid to high level clouds under partly cloudy skies. No precipitation occurred in the past 24, (although there was condensation on the gauge and light frost on the ground), along with minimal air movement. What "wind velocity" we had was from the West at 2 mph, wind puff: out of the East to 6 mph, humidity 79%, dew point 33°, current snow level 3500' [yesterday, it was 4500'], temperature 36.9° (this reading was the result of radiational cooling which is the cooling of the Earth's surface. At night, the earth suffers a net heat loss to space due to terrestrial cooling which is more pronounced when the sky is clear), and the barometric pressure 29.83" and rising. |
| 10/28/2010 |
7:01 AM |
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Both the West coast infrared and water vapor images as well as the Western Hemisphere satellite image of the Western US and Canada show an impressive system moving up from the SW to the NE [that covers most of WA] and has the appearance, interestingly enough, of a "scarecrow". The agent responsible for the system taking the direction mentioned above is the Northern polar jet which is packing winds up to 110 knots; and, immediately to the East (and going in relatively the same direction) are less intense winds of up to 90 knots. The result light precipitation today and later this evening as not much moisture is associated with this system. Mid afternoon weather for 10/27-we have scattered Cirrus, what appears to be a small area of Cirrostratus to the South and widely scattered Cumulus on a pleasant but coolish fall afternoon. However, a " strengthening pressure gradient in response to the approaching low pressure should result in winds picking up a bit out of the East this evening". Temperatures are in the mid 50's along with a light breeze from time to time. Currently [10/28], we have a very Stratus overcast with occasional light "sprinkles", light haze, and virtually no air movement. What "wind velocity" we have is from the NNE at 0 mph, wind puff: out of the NE to 4 mph, humidity 76%, dew point 40°, current snow level 5500' (yesterday it was 4000'. The forecast is for it to remain at about this level into the week end before beginning to rise early next week), temperature 50.2°, and the barometric pressure 30.17" and rising. |
| 10/29/2010 |
7:04 AM |
0.14 |
0.0 |
M |
0.0 |
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The system responsible for yesterday's precipitation has since slowly moved East of this area. The West coast infrared and water vapor image of the Western US and Canada illustrate where this wave is going and why. A rather steep diagonal extends from Benton county in the South to Pend Oreille county in the NE then continues across the panhandle of ID into NW MT, SE B.C. and SW Alberta before extending East through central Saskatchewan. The agent responsible for this direction is the Northern polar jet. However, "with drier air aloft moving in behind this wave and with radar confirming lack of precipitation behind this rain band", the resulting effect will be clearing skies and the dissipation of fog along the higher ridges and summits near the valley. There will be a brief break today before another stronger system will take aim at our area tomorrow night into Sunday. Mid afternoon weather for 10/28-we have a grey, gloomy, cool Nimbostratus overcast with light precipitation {this has been the case off and on all day}. In addition, some of the higher ridges and summits near the valley are or are about to be obscured from view. Temperatures are in the upper 40's to low 50's [or about 5-7 degrees cooler than yesterday at this time] along with an occasional breeze. Currently [10/29], we have scattered Cumulus, the fog is in the process of dissipating along the higher ridges and summits, there is both light haze and air movement. What we have is from the West at 0 mph, wind puff: out of the NW to 5 mph, humidity 90%, dew point 42°, current snow level 5000', temperature 46.2°, and the barometric pressure 30.06" and rising. |
| 10/30/2010 |
7:01 AM |
0.00 |
0.0 |
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Google earth as well as infrared and water vapor images show a system approaching our area from the NW and extends in a NE direction from off the coasts of CA, OR, and WA into most of B.C. covering all except the NE, NW and SE portion of the Province.
This is followed by a break before the next wave approaches our area. The Western hemisphere image not only confirms the location of this system but also highlights its moisture content.Following the "break" and farther out (North of the Aleutians and extends South) is another behemoth sized wave that has moderate moisture associated with it. What is responsible for the current system approaching our area? There are two pieces of the Northern jet that are of interest. The first or closest "piece" to us is located on the SE ID/WY border. However, the second piece [extending from the SW to the NE!] is responsible for the location of the system described above. Currently [10/30], on this Halloween eve!! we have overcast skies, moderate haze, no precipitation in the last 24 and virtually no air movement. What we have is from the East at 0 mph, wind puff: out of the NE to 5 mph, humidity 84%, dew point 42°, current snow level 6000' {yesterday, it was 5000'}, temperature 49.1°, and the barometric pressure 29.94" and rising. |
| 10/31/2010 |
7:40 AM |
0.07 |
0.0 |
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The infrared and water vapor images as well as Google earth show the system which affected our area yesterday has since split into two parts and at the same time moved East. The Northern part commences by straddling the NE B.C./Alberta border before extending South and West of the above mentioned border. The Southern part affects the Eastern third of WA, NE OR, and all of ID except the SE and Northern portion of the panhandle. The Western hemisphere image of the Gulf shows a large system or wave of which the bulk is poised to move onshore into B.C. Why is this the case? At this time, WA is not under the influence of the Northern polar jet although there is a piece to the SE, and another to the North. However, the much larger one to the West is of interest as there is a dip in it before it bends to the NW (wallah!) just off the B.C. coast. Later on today, it will push the system onshore with 90-110 knot winds. WA will also be affected though by less intense winds in the 70-90 knot range. In addition, cold air is being pulled into the mix. Currently [10/31], wow! from earlier this morning when we had overcast skies to widely scattered Cumulus under mostly clear skies. There is some air movement from the NE at 4 mph (although there is not much air movement now, this should change later on today), wind gust: out of the ESE to 15 mph, humidity 87%, dew point 45°, current snow level 4500' {yesterday it was 6000'}, temperature 49.6°, and the barometric pressure 29.96" and falling. |
| 11/1/2010 |
7:02 AM |
0.00 |
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The NOAA infrared and water vapor images of the US and Canada clearly show the direction that the current wave is taking. It would appear that we (WA)are just getting the "left overs" of a wave that is associated with two much larger systems to the North. This is born out by the fact that at the present time, the Northern polar jet is flowing into B.C. from the SW with winds of 90-130 knots. The NW part of WA is being affected by 110 knot winds while the rest of the state will experience less intense winds of 70-90 knots [our area!]. Later on however, the polar jet will sag a little South with the main punch (ranging from 110-150 knots) going into B.C. The winds will increase over WA from earlier in the day to 110 knots from a SW to NE diagonal and 90 knots for the rest of the state. Mid afternoon weather for 10/31-from the mostly clear skies earlier this morning, the weather has begun a change as clouds are moving in from the West and NW. These varieties include scattered Cirrus, Cirrostratus, Altocumulus and Cumulus. Temperatures are in the low 60's along with an occasional breeze. Currently [11/01], we have mid and high level clouds partly sunny skies, moderate haze, light sprinkles, and very little air movement. It is from the NNE at 4-5 mph, wind gust: out of the NNW to 10 mph, humidity 75%, dew point 37°, current snow level 8000' {yesterday, it was 4500'}, temperature 48.4°, and the barometric pressure 30.16" and rising. Some interesting EOM stats for October: 1)total rainfall: 0.36" or 73.5% of normal, 2) number of days with no precipitation: 26, 3) high BP: 30.44" on 10/12, 4) low BP: 29.37" on 10/24, 5) date with low BP and no precipitation: 29.61" on 10/25, 6) date with high BP and precipitation: 30.22" on 10/09 [0.03"], 7) average BP: 30.07", 8) average morning temperature: 47.1°, 9) high morning temperature: 59° on 10/03 and 10/10, and 10) low morning temperature: 36.3° on 10/17.
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| 11/2/2010 |
7:03 AM |
0.17 |
0.0 |
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Although the NPJ (Northern Polar Jet) continues to approach WA and B.C. from the SW, there are indications that several interesting changes will occur. There has been a minor change in its location from yesterday to a "wavy" West to NE diagonal, with winds in the 110k range and 90k for the rest of the state. At this point, an interesting scenario takes place. As the high pressure continues to build over our area, there is a trough in the gulf and behind that is another high pressure. At the same time this trough moves East, it gets compressed from both sides and is ultimately forced up and over the strong high pressure in our area into, quite possibly the Yukon. By late on Thursday, this high pressure will reach its apex before beginning to shift East on Friday. So, the next few days are going to be pleasant with little to no wind and above normal temperatures for this time of year. Mid afternoon weather for 11/01-at this time, we have a grey, gloomy Nimbostratus overcast that has featured sporadic light rain for most of the day until about 4P when it became more steady. Temperatures are in the low 50's with an occasional breeze. Currently [11/02], we have totally clear skies, light haze and air movement. It is from the SSE at 2 mph, then from the East at 2 mph, wind gust: out of the ENE to 10 mph, humidity 85%, dew point 43°, current snow level 6500' (yesterday it was 8000'), temperature 42.8°, and the barometric pressure 30.48" and rising {with the strength of the high pressure, there is potential for a very high BP reading tomorrow}. |
| 11/3/2010 |
7:18 AM |
0.00 |
0.0 |
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Currently, a wave or system is riding up the West side of the strong high pressure over our area (WA). This system is well laden with moisture including a relatively large cell of moderate to heavy precipitation embedded within it. The central, NW and NE part of B.C. will be affected as well as SE AK and the Southern portion of the Yukon with the bulk of this system yet to come onshore. In addition, it is effectively blocking very cold air behind it from invading WA weather. Now the position of the system, as viewed by the Western Hemisphere satellite, is confirmed by the direction of the NPJ as it will affect the areas mentioned above. Later, as the high pressure continues to strengthen, or build, thereby forcing the NPJ further North (with the highest velocity winds now in the Yukon), its axis begins to take a negative tilt. By tomorrow [11/04], the axis, or tilt, moves East until it is directly over us (WA) while at the same time, the West side of the polar jet has moved closer to the WA/OR coast. Mid afternoon weather for 11/02-not much change from earlier this morning as we have an absolutely gorgeous fall afternoon {quite a contrast to yesterday at this time!} with totally clear skies, temperatures in the mid 60's [this is about 10-12 degrees warmer than yesterday at this time] along with minimal air movement. Currently [11/03], we have basically clear skies except for a few scattered clouds to the North. No precipitation in the last 24, light haze and minimal air movement from the NNW at 4 mph, then from the West at 5 mph. Wind puff: out of the NNW to 9 mph, humidity 90%, dew point 37°, current snow level 12,500' (yesterday it was 6500'), temperature 39.9°, and the barometric pressure 30.57" and rising {this is the highest reading since records were begun in 1/04/09}. |
| 11/5/2010 |
6:35 AM |
0.00 |
0.0 |
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Google Earth and the NOAA infrared and water vapor satellite images clearly show three systems of which one is on the central CA/NV border, extends through OR (except for the Western and Eastern portions) then into the SE quadrant of WA. Immediately to the SW another system is affecting the coastal region of central to NW part of CA. The third system (immediately NW of the first one) is off the OR/WA coast and in a North by NW direction, "flows" over Vancouver Island into B.C. Behind this last system is a break before the next wave affects our region. The location of the NPJ {Northern Polar Jet} confirms the position of these three systems as shown on Google Earth. Later on today, as the axis of the NPJ tilts further to the right, the Western side moves over WA, OR and most of Northern CA. Mid afternoon weather for 11/04-the ridge of high pressure responsible for the nice weather the past few days has begun to move East. This opens the door for a series of systems to move into our region with the first one arriving tomorrow evening. Temperatures are in the upper 50's along with minimal air movement. Currently [11/05], we have overcast skies consisting of mid to high level clouds, no precipitation in the last 24, light haze, and minimal air movement. It is from the West at 1 mph, wind gust: out of the NNW to 12 mph, humidity 85%, dew point 40°, current snow level 9000', temperature 42.2°, and the barometric pressure 29.94" and falling [since 11/03, when the reading was 30.57" and rising, it has fallen 0.63"]. |
| 11/7/2010 |
6:48 AM |
0.08 |
0.0 |
M |
0.0 |
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The Western Hemisphere satellite image of Western Canada and the US show some interesting events taking place. The system that has been with us for the past few days has remained nearly stationery from Southern CA Northward through Eastern OR and WA. There are indications that this scenario will change in the next few days as a large pool of very cold air will begin to invade our area early next week which will result in much lower freezing levels and a "drying out" of the atmosphere. Behind this cold air is another wave; however, at this time it appears that the energy will sag South into OR and CA. So, what is going to move or push the cold air into our area, and why has the system (mentioned above) remained stationery? Addressing the second inquiry first the NPJ is in a SW to NE flow which explains the current location of the system. The system behind the cold air will be the agent to push the cold air into our area. Mid afternoon weather for 11/06-although we have mostly cloudy skies (consisting of high level clouds and mid level Altocumulus), "these high clouds will inhibit widespread fog development" in addition to "abundant moisture and haze trapped beneath an inversion". Temperatures are in the mid 50's along with minimal air movement. Currently [11/07], we have mostly clear skies except for scattered Cirrus, Cirrostratus, and widely scattered Cumulus. The winds have picked up since earlier this morning. They were from the NNW at 4 mph, wind gust: out of the NNW to 12 mph, humidity 81%, dew point 44°, current snow level 4000' [yesterday, it was 7000'], temperature 48.9°, and the barometric pressure 29.74" and falling. |
| 11/8/2010 |
6:43 AM |
0.00 |
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The satellite image shows a lot of activity taking place in the Gulf this morning. The first noticeable fact is that the nearly stationery system which had been affecting Southern CA, Eastern OR and WA, still remains intact, but has finally moved East. However, the West side of this system appears to be sheared. This leaves WA, OR, and CA mostly system free for the time being. The very cold air is now positioned off the central B.C., WA and OR coastlines. Behind the cold air are two waves, the first of which has some moisture associated with it; however, the second one is twice the size of the latter and is well laden with moisture including several cells of moderate to heavy precipitation embedded within it. There are additional waves near the Aleutians; however, they do not look to be players in our weather in the near future. The cold air (location mentioned above) is poised to be pushed into our area by the NPJ with an approaching system. It appears that by tomorrow the two waves will be diverted into OR and CA. In addition, there are indicators of very cold air affecting our area near the end of the work week as indicated by the position/location of the NPJ. Mid afternoon weather for 11/07-wow! from mostly overcast and patchy fog earlier this morning to mostly clear skies with widely scattered Cumulus. Temperatures are in the low 60's {about 5-7 degrees warmer than yesterday at this time} along with a light breeze from the West. Currently [11/08], we have beautiful clear skies, light haze, and an increase in "wind velocity" from earlier this morning. It was from the North at 5 mph, then from the WNW at 2 mph, wind gust: out of the WNW to 15 mph, humidity 77%, dew point 32°, current snow level 3000' (yesterday it was 4000'), temperature 37.6° [a difference of 11.3° from yesterday morning due to radiational cooling], and the barometric pressure 29.98" and rising.
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| 11/9/2010 |
6:56 AM |
0.00 |
0.0 |
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The Western Hemisphere satellite image reveals a fair amount of activity taking place including the Gulf. A weak wave has moved onshore that appears to be affecting the Cascades of both WA and Northern OR. The bulk of the moisture is in B.C. Behind this wave, a much smaller pool(a mere remnant of yesterday's size) of cold air remains positioned to invade our region. A break is followed by two more waves both well laden with moisture. Other than a trough moving inland and "diving" South, in addition to minor ridging taking place farther out, not much change has occurred in the NPJ this morning. However, later on today, as the ridging continues to build in the Gulf, any energy will be diverted South of us into OR, CA, NV and Western AZ as the NPJ is flowing from a NW to SE direction. Taking a peek at tomorrow, what began as a minor ridge has now grown to occupy the entire coastal regions of the Gulf. The Eastern side of this ridge dives in a SE direction into the SW part of the US. In addition, it appears that the NPJ is setting up to usher in very cold air near our region. Mid afternoon weather for 11/08-other than some scattered Cumulus, we continue to enjoy another beautiful but cool autumn afternoon along with light breezes and temperatures in the mid to upper 50's. Currently [11/09], we have a mid level overcast, no precipitation in the last 24, along with minimal air movement. It is however, from the East at 1-2 mph, wind puff: out of the NNW to 9 mph, humidity 80%, dew point 29° [the last dp reading this low occurred on 5/02/10 when it was 29°], current snow level 2500', temperature 33.3°, and the barometric pressure 30.01" and rising. |
| 11/10/2010 |
6:46 AM |
0.17 |
0.0 |
M |
0.0 |
M |
Just off the B.C. and AK coastlines is a very lengthy wave of which the Northern portion contains the most moisture and takes on the appearance of a "mushroom"; although, only SW AK and about "half" the Aleutians are the only land masses affected even though most of the head and stem are SE of the Aleutians. This is followed by a moderate pool of cold air before the second wave appears on the scene with abundant moisture. Both the NOAA infrared and water vapor image of our area (WA) show that the system responsible for yesterday's precipitation has weakened considerably and at the same time moved East into the panhandle of ID and NW MT. Although the ridge of high pressure dominates the Gulf, the East side dives SE into SW OR, all of CA and into the SWestern US before flowing North over the Dakotas leaving the Western US in the bowels of a "trough". Later today; however, the NPJ takes on the classic "U" look. By tomorrow, there are indications that this high pressure ridge will begin breaking down and by Friday morning will have moved off to the East as another ridge of high pressure begins to build into our region on Saturday. There are some big changes taking place early next week indicating that very cold arctic air will be affecting our area. Mid afternoon weather for 11/09-although the rain event has ended, at this site anyway, such was not the case earlier in the day when we not only had rain, but also endured a rain/snow mix. We have a grey, gloomy and cool overcast with temperatures in the low 40's (this is about 15-19 degrees cooler than yesterday at this time) along with no air movement. Currently [11/10], most of the low clouds and fog have lifted to a mostly Altocumulus variety. We have light haze and minimal air movement. It is however, from the WNW to 2 mph, then from the West to 3 mph, wind puff: out of the WNW to 7 mph, humidity 96%, dew point 36°, current snow level 3000', temperature 41°, and the barometric pressure 30.09" and rising. |
| 11/11/2010 |
6:56 AM |
0.00 |
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The West coast visible, Western satellite and both the NOAA infrared and water vapor images confirm a system onshore that commences in Northern CA and extends North through OR, WA (of which the moisture associated with this system appears to be localized over the Cascades of both sates)and on into Southern B.C. Immediately West of the previous system, the Western Hemisphere image reveals another weak wave off the OR/WA coastlines that bears North along the B.C. coastline before joining up with another system (that has more moisture associated with it) parallel to the AK coastline {just West of the B.C. coast} before brushing the SW and SE corners of the Yukon and AK respectively. Farther out, is yet another wave that is packed with a copious amount of moisture with one large and a few smaller cells of moderate to heavy precipitation embedded with in it.
At the present time, the East side of the NPJ is directly over WA, OR, and CA {in a North South direction} before beginning a NE flow toward the Great Lakes. In addition, the high pressure ridge is showing indications of breaking down as a result of the directional flow of the NPJ. Later today, it will be approaching our area from the West along with some minor ridging taking place in the Gulf. Mid afternoon weather for 11/10-from low stratus/fog, to mostly cloudy to clear skies except for scattered Cumulus, especially in the North and SW. A nice improvement indeed! Temperatures are in the low 50's with minimal air movement. Currently [11/11], we have a Stratus/fog overcast (this is because "a broad and placid surface high pressure will promote stable nocturnal conditions leading to the likelihood of widespread fog and low clouds"), no precipitation in the last 24, and minimal air movement at best. It is from the NNE at 0 mph, wind puff: out of the WNW to 8 mph, humidity 91%, dew point 34°, current snow level 5000' [yesterday, it was 3000'], temperature 37.4°, and the barometric pressure 30.38" and rising. |
| 11/12/2010 |
6:50 AM |
0.00 |
0.0 |
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The Western Hemisphere satellite image of the Gulf, shows a very large system (of which the latter portion is packed with heavy precipitation), the bulk of which appears to be heading North of our area into
B.C. North of this system are several smaller waves along with what appears to be a large pool of very cold air. In addition, both the NOAA infrared and water vapor satellite images confirm the direction the above mentioned wave is taking. Yesterday, in a North/South direction, the NPJ was diving South over WA, OR, and CA before heading NE toward the Great Lakes. Today, it is affecting only part of WA and OR. Currently the flow is from the SW to the NE thereby confirming why the wave/system, mentioned above, will be tracking into B.C. Taking a peek at tomorrow afternoon, the NPJ continues to build; however, the Eastern side flows right over WA, Eastern OR, Northern NV, and most of Western ID bringing with it the potential for windy conditions. Mid afternoon weather for 11/11-a few minor changes have taken place since earlier this morning. The first is a noticeable pick up in wind velocity from the NE and East along with temperatures in the low 40's; and, the other is the moderate to heavy haze trapped in the valley. The low strata/fog; however, is still with us. Currently [11/12],WOW! what a change from yesterday as we have scattered clouds (Cirrus/Cirrostratus), light to moderate haze, and minimal air movement. It is from the WSW at 0-4 mph, wind gust: out of the North to 18 mph, humidity 84%, dew point 34°, current snow level 3000' {yesterday, it was 5000'}, temperature 35.8°, and the barometric pressure 30.54" and rising. |
| 11/13/2010 |
6:59 AM |
0.00 |
0.0 |
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0.0 |
M |
At the present time, the Western Hemisphere satellite image appears to be the best of four options not only to view action in the Gulf, but also in our area as well. A weak system has moved onshore the bulk of which is in OR, the NE and NW corners of CA and NV respectively. Most of the moisture is localized over or near the Cascades of OR with lesser amounts in SW and NW WA. Still, there remains a significant portion yet to come onshore. In the Gulf, there is a lengthy band of moisture absolutely packed with moisture that presents an interesting observational fact as far as its direction is concerned. The SW end of this system is "flowing" around the SE side of a trough (clearly visible) and then in a graceful arc, follows the NPJ toward our direction (WA). At 250 mb, 70k (NPJ) winds are affecting WA, OR, approximately half of CA, most of ID and NW MT, with 110k winds taking aim at Southern B.C. Later on today, these higher wind velocities will dive SE to effect most of WA except for the SW portion. At 300mb however, there is a slightly different picture. We have 110-130k winds entering Northern B.C. before diving South into our region [WA] whereas the rest of the PNW is affected by 90k winds. Although the Southern portion will shift slightly East of our area later today, 130-150k winds will roar from the NW to SE B.C. Currently [11/13], we have scattered Cirrus and mid level cloudiness, moderate haze/smoke, no precipitation in the past 24, and minimal air movement. It is from the East at 5 mph, then from the NNE to 5 mph, wind gust: out of the East to 12 mph, humidity 96%, dew point 36°, current snow level 5000' {yesterday it was 3000'}, temperature 41°, and the barometric pressure 30.48" and rising. |
| 11/14/2010 |
6:59 AM |
0.01 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere satellite image of the Gulf show some interesting changes that have taken place in the past 24 hours. The "graceful" wave of yesterday that was influenced by the NPJ toward our region (WA) has now weakened somewhat although it still has a fair amount of moisture associated with it especially in the Southern end. This is followed by a brief break and still another wave. Although it is smaller than its predecessor, it packs copious amounts of moisture including several cells of heavy to moderate precipitation embedded within it. In addition, it appears that very cold air is being pulled into this wave which may affect our weather later next week. At 250 mb (millibars), we (WA), will be influenced by 110k [knots] winds (as the "mixing agents"will be in place to bring some potential high winds to the surface while ID, Northern UT and NW MT will be experiencing much higher wind velocities [130-150k range. By tomorrow however, the heavier winds (110k) shift slightly East leaving our area in the 90k range. Later tomorrow afternoon, the low velocity winds (70k) finally shift East as well. Mid afternoon weather for 11/13-as the sun sinks lower in the Western sky on a cool autumn afternoon, we have a Cirrostratus overcast with temperatures in the upper 40's and minimal air movement. Currently [11/14], we have partly cloudy skies {scattered Cirrus/Cirrostratus, some Altocumulus, and widely scattered Cumulus}, hazy/smokey conditions, and minimal air movement; although it has picked up in the last few minutes. It was from the NNE at 0 mph, wind puff: out of the NE to 6 mph, humidity 91%, dew point 38°, current snow level 8000' [yesterday, it was 5000'. This level will be the apex, as by tonight, it is forecast to begin another downward trend that will bottom out at about 1000' late next week], temperature 41°, and the barometric pressure 30.19" and falling. |
| 11/15/2010 |
6:30 AM |
0.00 |
0.0 |
M |
M |
M |
At this time, the highest velocity winds (110-150k) are approaching Northern B.C. from the Gulf then plunge SE across ID, NW MT and WY, before finally bisecting UT from the NW to the SE. WA is in the 90-110k range. Later today however (even though the flow direction remains relatively the same), the wind velocity weakens considerably, from 110-150k to mostly 110k, with scattered 130's and 150's. In addition, the SE side of the NPJ shifts East of our area and at the same time, the winds weaken considerably to the 110k range. WA is now left in 70-90k. From this perspective {300mb}, the NPJ flow is basically the same until we look ahead from Wednesday to Thursday evening where the NPJ is expected to flow over WA with 110-130 knot winds. Whether or not some of this air flow will mix to the surface remains to be seen. The satellite image shows a lot of energy in the Gulf. There appears to be three main waves of which two are riding up the West side of the ridge and will eventually make landfall in B.C. Very cold air continues to be drawn into the third wave. All three of these waves are loaded with moisture. Mid afternoon weather for 11/14-on a pleasant autumn afternoon, we have scattered low to high level clouds with temperatures in the mid 50's and very little air movement. The forecast for locally windy conditions did not materialize at this site anyway; however, 25 miles to the NW [Leavenworth] it did. Currently {11/15}, we have a mostly cloudy Altostratus/Altocumulus mix with light to moderate haze/smoke, and minimal air movement for the time being. It is from the ESE at 2 mph, wind puff: out of the ESE to 7 mph, humidity 85%, dew point 37°, current snow level 8000' lowering to 6000' later today. Temperature 41.74, and the barometric pressure 30.17" and falling. |
| 11/16/2010 |
6:35 AM |
0.03 |
M |
M |
M |
M |
Google earth shows a wave approaching the central B.C. and WA coastlines and immediately behind this is yet another one that extends further West from its predecessor. At 250 mb GFS, the why and where the first wave will make landfall is due to the location of the NPJ. Later today, a zonal flow from the Gulf approaches the Southern B.C. coast at 110k before switching to a NW flow over our area at 90k. In addition, both the infrared and water vapor NOAA satellite images of the North Pacific show the remaining moisture associated with yesterday's storm went right around us and at the same time moved to our East. Also visible is the next wave approaching our area. Mid afternoon weather for 11/15-the calm before the storm! Although the skies are still mostly clear, we do have scattered mid and high level clouds in addition to widely scattered Cumulus. However, it looks very threatening at this time toward the NW. Temperatures are in the low 50's with minimal air movement. Currently [11/16], although scattered Cumulus are the dominant variety, we have scattered mid and high level clouds as well. Although the wind is still with us, it is nowhere near the velocities reached last evening! It is from the West at 12 mph, then from the WNW at 10, wind gust: out of the NW to 27 mph, humidity 51% (yesterday the reading was 85%), dew point 34°, freezing level 3500' {yesterday, it was 8000' then lowering to 6000' later in the day}, temperature 50.5°, and the barometric pressure 29.86" and rising. |
| 11/17/2010 |
6:34 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Both the infrared and water vapor NOAA satellite image of the PNW show a very interesting development in the making. Between 0115 and 0715 UTC, a few hours before a low pressure developed off the central B.C. coast, a huge wave approached the Southern B.C. coast and within it were two large cells of moderate to very heavy precipitation. As it continued in a Easterly direction (parallel to the B.C./WA border), the wave began to sag South at 0615 UTC and by 1015-1415 UTC, the entire state was enveloped by this wave. As far as the low pressure is concerned, it continued to develop from about 0715 through 1415 and at the same time was pulling in very cold air. The North Pacific NPJ at 250 mbs- indicates a slight ridging taking place over us (WA); however, immediately NW of it is a low pressure system, which may begin to affect our weather {as it gradually moves SE} by sometime Friday. The areas affected (described above) are confirmed by the direction of the NPJ as the higher velocity winds (110k) are flowing East along the Southern B.C. border while at the same time the less intense winds (90k and above) are flowing across our area from the NW. Mid afternoon weather for 11/16-on a rather pleasant partly cloudy afternoon, we have scattered Cirrus and Cumulus {by far the dominant variety} and temperatures in the upper 50's along with a light breeze. Currently [11/17], we have an Altostratus duplicatus overcast [which is two or several closely one above the other lying Altostratus layers which can partly grow together], no precipitation in the last 24, light haze and very little by way of "wind". It is from the ESE at 3-4 mph, wind gust: out of the NW to 16 mph, humidity 73% (yesterday, it was 51%), dew point 33°, current snow level 3000', temperature 44.6°, and the barometric pressure 29.89" and falling. |
| 11/20/2010 |
6:37 AM |
0.16 |
0.0 |
M |
0.0 |
M |
The NOAA infrared, water vapor and Western Hemisphere satellite images all confirm the immense size of the trough-clearly visible-and since yesterday, has not sagged further South, at which time it was adjacent to central CA. The SE side of the trough extends in a SW to NE direction which corresponds to the flow of the NPJ at 250 mb. Also visible, is the upper level low pressure off the WA coast which at the present time is rotating what little moisture there is through OR into WA along with cooler air. According to the NPJ "chart" at 250 mb, the upper level trough (mentioned above) will continue to sag South and as time goes on, will be compressed from both sides of the NPJ. Immediately NW of the upl [upper level trough], is an immense high pressure ridge extending from the Aleutians North in which the air flow into our area will eventually be from the North. Mid afternoon weather for 11/19-WOW! what a change from earlier this morning when, under partly cloudy skies, we had scattered mid and low level clouds to a gradual thickening and lowering of the clouds on a overcast afternoon giving the "darker than usual effect for this time of day". Temperatures are in the low 40's along with a light breeze. Currently [11/20], we have a Nimbostratus overcast in the form of light snowfall. Although the snow last evening only amounted to a trace, it proceeded to melt in the larger gauge from which the "water" was then poured into the graduated gauge resulting in the amount given above. We have minimal air movement, humidity 99%, dew point 31°, current snow level 1500', temperature 35.6°, and the barometric pressure 29.79" and rising. |
| 11/21/2010 |
7:00 AM |
0.01 |
0.0 |
M |
0.0 |
M |
The West Coast and Western Hemisphere satellite images show the trough has not only begun to shift East, but has also become smaller in the past two days in addition to very cold air associated with it. Just off the WA coast is one system along with a fair amount of moisture associated with it currently affecting Southern Vancouver Island and extreme NW WA. The main bulk is yet to come onshore. So, why did the system (currently off the WA coast) take the direction it did and from whence did it come? Currently, the {NPJ of the North Pacific @ 250 mb} jet is in a slight South by SE flow as it flows SW just off the WA, OR and Northern CA coastlines before commencing in a graceful SW to NE flow. As far as where it came from, it is believed to have commenced from the Yukon (SW portion) and proceeded down the entire B.C. coastline to take up its current residence off the coast of WA. As far as the upper level trough is concerned, it continues to sag from the NE to the SW. Later today however, this ult (mentioned above in the preceding sentence) will shift East thereby opening the door for an invasion of cold arctic air. From the North America NPJ @ 300mb, not only is the PNW going to feel the effects of cold arctic air, but so is the NE part of Canada including Quebec, Newfoundland and Labrador, etc. Currently [11/21], we have a grey, cold, Stratus overcast skies with some air movement. It is from the WSW at 0-5 mph, then from the South at 2 mph, wind puff: out of the ESE to 5 mph, humidity 69%, {yesterday, it was 99%}, dew point 20° [this is the lowest dp since recordings were begun in April of this year], current snow level: at the surface, temperature 32°, and the barometric pressure 29.79" and rising. |
| 11/22/2010 |
6:36 AM |
0.01 |
0.2 |
0.01 |
0.2 |
0.01 |
The Western Hemisphere shows three active features in the Gulf. The first is in reference to the moisture associated with the system (responsible for the light accumulations-at this site anyway) that has since moved East of our area with the bulk yet to come onshore most likely in the form of mid level clouds as the "cold arctic air is in the process of moving into the area". The race is on! However, waiting in the wings is the second feature that being a more potent wave, the bulk of which is North of the Aleutians in a SW to NE direction before extending North through the AK interior. It addition, it is well laden with moisture with several cells of moderate to heavy precipitation embedded within it. South of the wave just described and North of HI is the third feature- another wave which is much smaller than its predecessor and it also has fair to moderate amounts of moisture associated with it. Mid afternoon weather for 11/21-the sky continues to be obscured by a solid, grey, Nimbostratus overcast in the form of intermittent light snow flurries. With the temperature at the freezing mark and approximately 5-10 mph breezes, it feels more like 21-25 degrees. Br-r-r! It's one cold afternoon and they will become even cooler as the week progresses. Currently [11/22], we have a Stratus overcast, it has stopped snowing, and there is some air movement. It is from the ESE at 6 mph, then from the East at 5 mph, wind puff: out of the East to 8 mph, humidity 69%, dew point 12° {another record low!], current snow level: at the surface, temperature 26.4°, and the barometric pressure 29.78" and falling. |
| 11/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 11/25/2010 |
6:43 AM |
0.00 |
0.0 |
0.28 |
2.1 |
0.28 |
There is a series of waves approaching our region of which two are in the Gulf. The first is just making landfall in central and SW B.C. with lesser amounts in the NW corner of the Province. A small amount of energy affects central WA before extending NW into Southern B.C. Right on its tail is the second wave with what appears to be a fetch that extends South by SW to just NE of the Midway Islands. There are indications that these two waves will be affecting our weather this weekend and early next week. The Western Hemisphere satellite image further illustrates how well laden with moisture these two waves are. The direction the first wave is taking as well as its growing intensity is beautifully illustrated by the NOAA water vapor image.
The NPJ of the North Pacific at 250 mb is flowing SW to NE into central and Southern B.C before diving in a slight NW to SE flow over the PNW. the upper level trough has moved East of our region into Eastern MT, ND, and WY. Later today, the ult continues its Eastward trek, ridging takes place over B.C and the PNW in a positive axis. Behind this is another low pressure followed by another although moderate ridging in the Gulf. Currently [11/25], we have a mixture of mid and upper level cloudiness on a mostly overcast Thanksgiving day. No precipitation has occurred in the last 24, some light haze is visible, along with very little air movement. It is from the East at 0 mph, the wind puff: out of the ESE to 4 mph, humidity 69%, dew point 8°, current snow level: 500' by this afternoon, temperature 21°, and the barometric pressure 30.40 and rising. |
| 11/27/2010 |
6:34 AM |
0.05 |
0.9 |
0.05 |
2.4 |
0.25 |
|
| 11/28/2010 |
6:43 AM |
0.00 |
0.0 |
M |
2.4 |
0.25 |
There are two waves in the Gulf with the potential for two more to enter the region at a later date. The Western Hemisphere image shows that the Southern wave has more moisture associated with it than does its Northern counterpart. So, where will they make landfall? At this time (according to the NPJ of the North Pacific @ 250 mb), it appears that both of them will be diverted into CA leaving the PNW high and dry. Mid afternoon weather for 11/27-at the present time, we have widely scattered clouds under mostly sunny skies {quite a contrast to earlier this morning!}, temperatures in the mid 30's {which is about 2-4 degrees warmer that yesterday at this time} along with minimal air movement. Currently [11/28], we have a Stratus/fog overcast, no precipitation in the last 24,and minimal air movement. It is from the NNE at 2 mph, wind puff: out of the East to 4 mph, humidity 97%, dew point 23°, current snow level 500', temperature 24.4°, and the barometric pressure 29.99" and rising. |
| 11/29/2010 |
6:36 AM |
0.00 |
0.0 |
M |
2.4 |
0.25 |
The wave of concern, has the classic "comma look" of which the upper two thirds cover most of B.C. (except for the SE quadrant) while the bottom third is on the WA/OR coastlines before extending in a SW direction. The Western Hemisphere image confirms the location and description of the first wave {well laden with moisture and described above) as well as four additional waves with the probability of entering the Gulf at a later date. How does the NPJ of the North Pacific at 250 mb look today? With ridging to our East and West, the upper level trough has shifted East over MT and sagged South into UT and CO leaving our area in a NW to SE flow. Mid afternoon weather for 11/28-although the persistent fog continues in our area, 25 miles to the NW the people of Leavenworth enjoyed a partly cloudy afternoon. Temperatures are in the low to mid 30's with no air movement. Currently [11/29], the low clouds and fog continue because a "flat ridge of upper level high pressure remains over the region". No precipitation has occurred in the last 24, and there is some minor air movement. It is from the ESE at 7 mph, then from the East at 4 mph, wind gust: out of the East to 10 mph, humidity 99%, dew point 18°, current snow level 2000' (yesterday, it was 500'), temperature 27°, and the barometric pressure 30.45" and rising. |
| 11/30/2010 |
6:44 AM |
0.06 |
0.5 |
0.06 |
1.6 |
0.26 |
Mid afternoon weather for 11/29-although the low clouds and fog continue to persist, it has lifted to some extent to where Fancher Heights is visible at the base of Badger Mountain to the East. However, the higher ridges and summits around the valley are completely obscured from view. Temperatures are in the upper 20's (a few degrees warmer than yesterday at this time) along with no air movement at all. In addition, another core sample was taken. Currently [11/30], we have a Nimbostratus overcast in the form of moderate snowfall. There is light air movement from the NNW at 0 mph, wind puff: is out of the WNW to 4 mph, humidity 93%, dew point 24°, snow level 2500'{current snow depth for WA passes as of 11/30/10: Stevens: 23", Snoqualmie: 28", and Blewett: 9"}, temperature 28.9°, and the barometric pressure 30.30" and rising. Here are some interesting EOM stats: 1) total rain/snow: 1.04" or 76.5% of normal, 2) number of days with no precipitation: 18, 3) high BP: 30.57" on 11/03, 4) low BP: 29.74" on 11/07, 5) date with low BP and no precipitation: date is given given in number 4 and did not happen, 6) date with high BP and precipitation: 30.48" on 11/01 (0.17"), 7) average BP: 30.11", 8) average morning temperature: 35.3°, 9) high morning temperature: 50.5° on 11/16, and 10) low morning temperature: 8.6° on 11/24. |
| 12/1/2010 |
6:34 AM |
T |
1.3 |
0.10 |
2.9 |
0.36 |
The closest weather to our region is to our NW and another to the South. A weak wave approaching from the SW to the NE, has extended across the NW portion of Vancouver Island into SW B.C. The second one is off the Southern OR/Northern CA coast, the bulk of which extends through Southern OR and ID before extending NE into SW and central MT. The Western Hemisphere image confirms the persistent low pressure off the North Central B.C. coast, the weak wave NW of our region and the system South of our area (Southern OR/Northern CA coast). Mid afternoon weather for 11/30-although it finally stopped snowing about thirty minutes ago, we have quite an array of cloud formations from high level Cirrus to low Stratus and patchy fog as there was slight partial clearing from overhead toward the West under mostly overcast skies. Temperatures are in the low 30's with no air movement. Currently [12/01], we have a mostly Altocumulus cloud cover with partial clearing in the NW to the NE. No precipitation occurred in the last 24. The air movement is from the NNE at 2-4 mph, then from the North at 1 mph, wind puff: out of the WSW to 5 mph, humidity 93%, dew point 22°, current snow level 2500', temperature 25.7°, and the barometric pressure 30.16" and falling. |
| 12/2/2010 |
6:35 AM |
0.05 |
1.0 |
0.05 |
3.4 |
0.37 |
Two potential solutions to the "warm" overnight low the first being cloud cover, and the other is the SW to NE direction of the current system. A third possibility would be the combination of both solutions given above. The Western Hemisphere image reveals a fairly active Gulf this morning. First off, is the steep ("sheared look") SW to NE flow. This is due to a line of demarcation between the moisture {to the SW} and the cold air {to the NW}. In addition, this system bisects WA from the SW to the NE [with several pockets of moisture located in Eastern WA] before extending East into the ID panhandle and NW MT. Another agent for the steep look is the (NPJ of the North Pacific at 250 mb) which is flowing from the SW to the NE accompanied by 70-90k winds. Not much change in the flow direction later today other than some ridging will take place just East of our region. Mid afternoon weather for 12/01-under mostly cloudy skies, some Cirrostratus were briefly observed and now we have scattered clouds with lower level stratus like clouds. Temperatures are in the mid 30's along with no air movement. Currently [12/02], we have a grey, gloomy Nimbostratus overcast in the form of brief flurries. There is minimal air movement from the West at 1 mph, wind puff: out of the NW to 6 mph, humidity 94%, dew point 27°, current snow level 1500' (yesterday, it was 2500'), temperature 32.4°, and the barometric pressure 30.12" and falling. |
| 12/3/2010 |
6:35 AM |
0.00 |
0.0 |
M |
2.1 |
0.26 |
All four (Google earth, both the NOAA infrared and water vapor images, and the Western Hemisphere image) images clearly show a "weak" low pressure out in the Pacific {SW of Southern B.C. and West of WA} that still retains the "comma look", and in a graceful arc, extends SW to off the Northern CA coast. In addition to the low pressure mentioned above, the Western Hemisphere image reveals only a portion of a behemoth wave. The SW to Northern portion has moderate to heavy moisture while the Western half has numerous pockets of moisture. Immediately North of this wave is a moderate pool of cold air. Mid afternoon weather for 12/02-the low Stratus and fog continue effectively obscuring the higher ridges and summits around the valley. Temperatures are in the low 30's along with no air movement. Currently ]12/03-we have another morning of grey, gloomy low Stratus and fog. Since there are no systems moving through the region, it would be assumed that the present cloud cover is due to an inversion. There has been no precipitation in the last 24, and there is some air movement. It is from the ESE at 2-8 mph, wind gust: out of the ENE to 11 mph, humidity 95%, dew point 21°, current snow level 1500', temperature 28.8°, and the barometric pressure 30.30" and rising. |
| 12/4/2010 |
6:36 AM |
0.00 |
0.0 |
M |
2.1 |
0.26 |
The immense wave that was just off the coast of Russia and extended East across the Bering Sea into NW AK, has moved SE into Northern B.C., Southern Yukon Territory and the SW corner of the NW Territories before extending SW to the Midway Islands. After a break and farther out, is another large wave; however, this one is West of the Aleutians. The Western Hemisphere image show that both waves are well laden with moisture and have some potentially moderate to heavy cells of precipitation embedded within them. Between these two waves is a moderate pool of cold air. At this time, there are two upper level troughs with one off the West coast and the other is over the Gulf just South of the Aleutians. In addition, the direction and area covered by the wave (described above) is congruous with the SW to NE flow of the NPJ. Later today, this trough will deepen and at the same time shift SE. Mid afternoon weather for 12/03-MOS-low Stratus and fog due to a "transition to a much more stable weather regime starting late today into tonight". This should put a lid on any air movement for awhile. Temperatures are in the low 30's with no air movement. Currently [12/04], we have partial clearing in the North to the NE, and towards the SE under an Altostratus overcast. No low Stratus and fog this morning! No precipitation occurred in the last 24, and there is some air movement. It is from the SSW at 2 mph, wind puff: is out of the NW to 7 mph, humidity 82%, dew point 26°, current snow level 2500' (yesterday, it was 1500'), temperature 33.3°, and the barometric pressure 30.41" and rising. |
| 12/5/2010 |
6:43 AM |
0.00 |
0.0 |
M |
1.1 |
0.21 |
Although the wave of interest still covers the same general area (NW B.C., NE part of the Yukon and central Southern NW Territories) as yesterday, it is not as intense and nowhere near the size when it extended SW to the Midway Islands. Not only are there two additional waves West of the Aleutians and in a North/South direction, but also a deep trough {clearly visible} accompanied by a very large pool of cold air. The Western Hemisphere image is congruous with Google earth as far as the waves and trough are concerned, and shows all three waves have fair to abundant moisture. Once again, the steep SW to NE direction of the wave (described above) is congruous with the SW to NE flow of the NPJ. The upper level trough over the Pacific off the CA coast is showing signs of "breaking down" while the high pressure over the PNW and B.C. appears to be strengthening. There are signs of a split developing in the NPJ by mid week. Mid afternoon weather for 12/04-except for some partial clearing from the NW to the NE, we have an Altostratus overcast, temperatures in the mid 30's and minimal air movement. Currently [12/05], we have partial clearing in the NE and East under mostly cloudy (Altocumulus) skies. No precipitation in the last 24, and very little happening by way of air movement. It is from the ESE at 0 mph, wind puff: out of the East to 4 mph, humidity 72%, dew point 26°, current snow level 3500' (yesterday, it was 2500'), temperature 33.6°, and the barometric pressure 30.40" and rising. |
| 12/6/2010 |
6:35 AM |
0.00 |
0.0 |
M |
0.9 |
0.21 |
The system of interest this morning is a low pressure (that is pulling in very cold air), the center of which is toward the Southern reaches of the Gulf and well to the West of the WA/B.C. border. Followed by a equidistant break are two more waves the first of which is located over the Bering Sea between Russia and AK in a North South direction and the second one extends from the NW to the SE from the first wave. This second wave {just mentioned} contains fair to moderate moisture and may be a player in our weather in the next day or so. The ridging of the NPJ (well North of our region) is showing signs of breaking down while later today, the upper level trough over the Pacific off the WA/OR coast takes on the characteristic of a "ball in the palm of a hand" look. In addition, the appearance of a split flow is also taking shape. Mid afternoon weather for 12/05-since earlier this morning (when we had some partial clearing), the clouds have lowered and thickened into the Stratus variety. Temperatures are in the mid 30's along with occasional air movement. Currently [12/06], we have partial clearing in the NE under a mostly cloudy Altostratus/Altocumulus mix. There has been no precipitation in the last 24 and very little by way of air movement. It is from the West at 1-3 mph, wind puff: out of the WNW to 8 mph, humidity 86%, dew point 30°, current snow level 4000', temperature 36° (this is 10.8° above the average which is to warm for this month), and the barometric pressure 30.21" and falling. |
| 12/7/2010 |
6:33 AM |
0.00 |
0.0 |
M |
0.4 |
0.10 |
Three scenarios grab the attention this morning-an immense trough, a closed low (which has sagged slightly SE from yesterday's location), and very cold air associated with the closed low. The West side of the trough is composed of two waves of which one is just West of the Aleutians and the other one (immediately below it) lies in a NW to SE direction to just NE of the Midway Islands whereas on the East side, a wave is approaching our area from the SW. The Western Hemisphere image puts the three "scenarios" mentioned above into a clearer perspective by illustrating how much moisture is associated with these waves. Two of three waves have fair to moderate moisture while the third one (NE of the Midway Islands) does not. The location of the upper level closed low is confirmed by the direction of the NPJ flow. Immediately West of the "low" some moderate ridging is taking place. Later today, not only does this "low" shift slightly East, but also appears to broaden into an upper level trough with continued ridge building to the immediate West. Mid afternoon weather for 12/06-it would seem that we have a mid level overcast dominated by Altostratus with a small area of Altocumulus toward the SW and West. Temperatures are in the mid 30's along with a nice breeze from the SE and South. Currently [12/07], we have a Stratus overcast, no precipitation in the last 24, light haze, and minimal air movement. It is from the WNW at 2 mph, wind gust: out of the East to 11 mph, humidity 87%, dew point 27°, current snow level 5000' (yesterday, it was 4000'), temperature 34.3°, and the barometric pressure 30.45" and rising.
|
| 12/8/2010 |
6:38 AM |
0.12 |
0.9 |
0.12 |
1.3 |
0.22 |
There are two systems relatively close to our region the first of which extends from the NW coast of WA near the B.C. coastline in a NW direction. Followed by a brief break, another system, in a graceful arc, extends NE from the Gulf to the Yukon/B.C. border then SW across central Alberta and Saskatchewan into NE MT and NW ND. The Western Hemisphere image shows an immense trough, a large pool of cold air within it, and the two systems (described above) both of which are well laden with moisture. In addition, there is another extensive wave well to our SE that comes onshore in Northern CA and extends in a SW to NE direction affecting many states (including CA, OR, ID, MT and NV). The upper level trough has deepened, there is ridging to the East, and the ridge to the West continues to build. Later today, as the ridge building continues in the West, the flow shifts from a steep SW to all most North direction to a more gradual SW to NE flow. Mid afternoon weather for 12/07-we have a grey and somewhat gloomy Stratus overcast. At this time however, none of the higher summits or ridges are obscured except for Twin Peaks to the West and Birch Mountain to the North. Temperatures are in the mid 30's along with no air movement. Currently [12/08], we have a Stratus/low cloud overcast in which the higher summits and ridges are obscured. The precipitation that was received yesterday afternoon and early evening, has pretty much melted and the amount shown in the box above is only a fraction of the three inches due to temperatures above freezing during the overnight. The minimal air movement was from the SSW at 0 mph, then from the ESE at 1 mph, wind puff: out of the SSW to 2 mph, humidity 94%, dew point 32°, current snow level 4000' (yesterday it was 5000'), temperature 35.8°, and the barometric pressure 29.93" and falling. |
| 12/9/2010 |
6:30 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Although there are several small but weak waves in the Gulf along with some very cold air, most of the weather action is to our North (central and SW B.C., and SE B.C. along the B.C./Alberta border) and South {NE OR, NE CA- parallel to the NV border- NW and Southern NV in the Los Vegas area}. The water vapor image of the NOAA shows an excellent illustration of weather (or a wave) moving into the region South of our area described above. Currently, the NPJ is in a gentle SW to NE flow over our area with slight ridging over the PNW. This is followed by an upper level trough that is "lying" in a SW direction. Immediately behind this is a growing dome of high pressure just to the West of the Aleutians. Taking a peek ahead, there are indications that arctic air could be affecting our area toward the end of the work week next week. Currently [12/09], we have another low Stratus/fog overcast along with very little air movement. It is, however from the ESE at 0 mph, then from the East at 1 mph, wind puff: out of the WSW to 5 mph, humidity 97%, dew point 33°, snow level 3500', current snow depth on the WA passes: Stevens: 29" compared to 23" on 11/30, Blewett: 11" compared to 9" on 11/30, and Snoqualmie: 35" compared to 28" on 11/30. Temperature 37.4°, and the barometric pressure 29.97" and falling. |
| 12/10/2010 |
6:35 AM |
0.09 |
0.0 |
M |
0.0 |
M |
The Western Hemisphere image clearly shows the direction the "pineapple express" is taking. The Southern portion is laden with copious moisture that includes embedded cells with some very heavy precipitation associated with it. However, the intensity
decreases with distance and as its path toward OR takes a more Westerly direction, a subtle observation is noted. Either it is coming around the SE portion of a trough, it is a line of demarcation between moisture and cold dry air, or both. The cold air and trough are clearly visible along with what appears to be a closed low or several weak waves in the Gulf. Followed by a break, another wave West by SW of the Aleutians is bringing with it a fair to moderate amount of moisture. Another contributor to the direction of the "pineapple express" is the flow of the NPJ from the SW to the NE with winds over OR in the range of 110-150k. Immediately to the NW, the upper level trough deepens, and behind it, the high pressure continues to build. Later today, the upper level trough becomes "squeezed"" as a ridge begins to develop over the PNW, while the ridge to the West is now an immense dome. Currently [12/10], we have a Stratus/foggy overcast with East Wenatchee completely obscured from view. We have minimal air movement from the WSW at 1 mph, then from the West at 4 mph, wind gust: out of the SW to 10 mph, humidity 100%, dew point 32°, current snow level 2500' (yesterday, it was 3500'), temperature 35.1°, and the barometric pressure 29.92" and falling. |
| 12/11/2010 |
6:37 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Four events are taking place in or near the Gulf this morning. The first one, of course, is the mammoth "pineapple express" in its SW to NE direction into SW B.C. most of WA and Western OR. The second one is located just South of the AK mainland in the form of either a closed low or several small waves which have shifted NE from yesterday's location. The third is an immense trough and cold air within it followed by a relatively large wave which is the fourth event. The Western Hemisphere image beautifully illustrates the four events described above including fair amounts of moisture on the NE end of the pineapple express (our region) and fair to moderate moisture associated with event four mentioned above. Both the infrared and water vapor image actually show the "pineapple express" gradually shifting North with the bulk of the moisture going into central B.C. and WA (although to a somewhat lesser degree). The apex of the NPJ is just off the B.C., WA and OR coastlines and with the same SW to NE flow as the "pineapple express". However, the flow over WA is from the NE to the SW. Looking ahead, we will finally loose the SW flow by around mid week as it becomes more of a zonal flow. This should result in lower freezing levels and cooler temperatures. Mid afternoon weather for 12/10-finally a break! The fog has lifted enough to where East Wenatchee is visible, there is partial clearing from the NW to the NE, and the "overcast" overhead, has lightened considerably although not quite enough for a sun break. Temperatures are in the low 40's along with minimal air movement from the south. Currently [12/11], we have a Nimbostratus overcast in the form of light flurries for the time being. What air movement we have is from the East at 3-4 mph, wind puff: out of the ESE to 8 mph, humidity 94%, dew point 31°, current snow level 3000', temperature 36.5°, and the barometric pressure 30.33" and rising. |
| 12/12/2010 |
6:31 AM |
1.15 |
3.8 |
1.15 |
3.8 |
1.15 |
The "pineapple express" has shifted SE of HI and in a steep SW to NE direction comes onshore into SW to central B.C., and south central Alberta before diving into the SW quadrant of Saskatchewan. The reason for the direction of the "pineapple express" is due to high pressure off the Southern CA coast and low pressure (with very cold air associated with it) in the Gulf. An interesting development has occurred in the last 48 hours regarding the "pineapple express". The copious moisture that was in the SW sector is now in the NE sector (our region). Not to be outdone, the NPJ is another major contributor to the direction the pineapple express is taking as it also is in a steep SW to NE flow into B.C. as described above. The high pressure off the Southern CA coast and the upper level trough in the Gulf are also visible. Behind this is an immense dome of high pressure. Mid afternoon weather for 12/11- consists of a Nimbostratus overcast in the form of heavy snowfall at the present time. Temperatures are in the mid 30's along with calm "winds". Currently [12/12], we have a Nimbostratus overcast in the form of rain. We have all most no air movement; however what we do have is from the NNE at 0 mph, wind puff: out of the West to 1 mph, humidity 100%, dew point 33°, current snow level 8000' {yesterday it was 3000'. WOW! a major steep rise of 208.3'/hr in just a 24 hour period! This will be the apex as the snow levels are forecast to begin a downward trend beginning this evening and bottoming out at around 1500' by mid week}, temperature 35.8°, and the barometric pressure 30.01" and falling. |
| 12/13/2010 |
6:38 AM |
0.12 |
0.0 |
M |
1.8 |
0.57 |
Although the "pineapple express" is still visible, it appears to have weakened considerably in its classic SW to NE direction now extending into central and Northern CA. This is a noticeable SE shift from yesterday's location in B.C. A possible reason for this direction change: it is riding up the West side of a high pressure off the coast of Southern CA; or, a SE shift from the Gulf by the low pressure thereby giving the appearance of "pushing" the now weak pineapple express to the SE. The Western Hemisphere image clearly shows only a remnant of the once potent pineapple express. A wave (farther West) has fair to moderate moisture with it. However, immediately West of the SE to NW arm attached to the wave is what appears to be another closed low pressure system. The water vapor image of the NOAA clearly shows the pineapple express shifting to the SE while at the same time the high pressure off the Southern CA coast begins to weaken and becomes more flat as the day progresses. Currently, the NPJ flow is from the SW to the NE, the ridge (to our East) has a slight positive axis and the upper level trough lies in a SW direction followed by an immense dome of high pressure and at the same time a small trough beneath it. This would indicate a split flow in the NPJ. Currently [12/13], we have a Stratus/foggy overcast along with no air movement. It is however from the NNE at 0 mph, wind gust: out of the West to 11 mph, humidity 100%, dew point 34°, current snow level 4500' {yesterday it was 8000'}, temperature 36.9°, and the barometric pressure 30.00" and falling. |
| 12/14/2010 |
6:35 AM |
0.09 |
0.0 |
M |
1.3 |
0.37 |
A very lengthy low pressure system (with a tight classic "comma look") has taken up residence off the SW B.C. coastline and in a nice are, extends in a NW to SE diagonal across central and SE B.C. before diving South over the WA and Northern OR Cascades. From here, it arcs in SE by East direction to the Midway Islands just NW of HI. Other states affected by this system include central to Northern CA, OR, Northern NV, the panhandle of ID, WY, Eastern WA and Western MT respectively. A large system indeed. The Western Hemisphere image shows an impressive amount of moisture associated with this system and, a moderate pool of cold air off the WA/OR coastlines. Both the infrared and water vapor images of the NOAA pose an intriguing possibility. Could it be that there are two events taking place in the form of (one) a low pressure {off the SW B.C. coast} and (two) another "pineapple express" that comes on the shores of Southern OR and Northern CA? The SW to NE flow of the NPJ corroborates the direction the "pineapple express" is taking [described above]. Mid afternoon weather for 12/13-we have a dense Stratus/foggy overcast in which most of East Wenatchee is obscured as are the higher ridges and summits around the valley. There is no air movement, and the temperatures are in the upper 30's to low 40's. This is 10-15 degrees warmer than the December average. Currently [12/14], what a difference 24 hours make!! We have scattered clouds (all Cumulus) under mostly sunny skies-for the first time this month! There is no haze, but we do have slight air movement. It is from the ESE at 0-1 mph, wind gust: out of the NNE to 15 mph, humidity 97%, dew point 35°, current snow level 2500'{yesterday, it was 4500'}, temperature 35.6°, and the barometric pressure 29.44" and falling (the last time the BP was this low was on 4/05/10 when the reading was 29.46" and falling). |
| 12/15/2010 |
6:31 AM |
0.00 |
0.0 |
M |
1.3 |
0.30 |
Several changes have occurred to yesterday's "pineapple express." The first change: it has shifted South of the Southern OR/Northern CA coastlines (yesterday's location) to central and Southern CA. The second change: it no longer extends in a SW by West direction from OR to the Midway Islands and just NW of the HI Islands. The third change: it comes onshore in central and Southern CA in a "gentle" SW to NE direction (with the greatest portion still to come on shore) before extending in a steep SW to NE direction through many states into the Dakotas and NE. The fourth change: its moisture content appears downgraded from a copious amount to one of fair to moderate moisture. Following a break, is a large wave over the Midway Islands NW of HI. This one is well laden with moisture including several cells with moderate to very heavy precipitation embedded within it. Other distinctive weather characteristics include a large pool of cold air off the B.C., WA/OR coastlines, an immense trough, and what appears to be a closed low immediately South of the AK mainland. Currently [12/15], we have an Altostratus/Altocumulus combination under mostly cloudy skies. There is no fog, no precipitation in the past 24, light haze and very minimal air movement. It is from the ESE at 1 mph, wind gust: out of the NW to 14 mph, humidity 82% {two days ago, the reading was 100%}, dew point 26°, current snow level 1500' [it was 2500' yesterday], temperature 30.7°, and the barometric pressure 29.87" and rising. |
| 12/16/2010 |
6:32 AM |
0.00 |
0.0 |
M |
1.3 |
0.30 |
The Western Hemisphere image reveals some interesting action taking place. The first regards yesterday's wave located over the Midway Islands NW of HI that was well laden with moisture. The SW portion (located in the area just mentioned) of the now weakened wave is as described above whereas the moisture content of the remainder could be downgraded from a well laden amount to one of adequate moisture. In addition to a small trough off Southern and Northern Baja CA coastlines, it is likely that this wave will make landfall in the area just mentioned. Other distinctive weather features include an immense trough, a low pressure immediately South of the AK mainland pulling in very cold air and a wave just West of the Aleutians. A combination of these features could have a profound affect on our weather this week end. The NPJ is South of our region, and is congruent to the flow and where the wave will make landfall (mentioned above). The upper level trough is visible and immediately West of it is a huge dome of high pressure (in a negative tilt or axis) and another low pressure underneath; or, a brief split in the NPJ. Behind this is yet another rather large "trough". Mid afternoon weather for 12/15-it now appears that we have a thicker Altostratus overcast than earlier this morning. Temperatures are in the mid 30's (or, about 10 degrees cooler than yesterday at this time) along with calm "winds". Currently [12/16], we have a Stratus overcast; although behind Fancher Heights, at the base of Badger Mountain, it would be Nimbostratus in the form of light snow. No precipitation in the last 24, and minimal air movement. It is from the West at 2 mph, then from the WNW at 1 mph, wind gust: out of the NW to 14 mph, humidity 82%, dew point 26°, current snow level 1500', temperature 35.4°, and the barometric pressure 30.13" and rising. |
| 12/17/2010 |
6:38 AM |
T |
T |
M |
0.9 |
0.32 |
The Western Hemisphere image shows a fairly active Gulf this morning. All the to-do about where yesterday's wave would make landfall (Southern and Northern Baja, CA) did not pan out. In fact it came onshore all right! From Southern CA Northward to the OR/CA border with the bulk of the wave yet to come on shore! Another feature in the Gulf is the persistent closed low that shifted SE from yesterday's location along with the cold air associated with it. From the West Conus IR Loop, it appear that this low is setting up to eject weather disturbances into our region and is responsible for the wave coming onshore where it did. Farther out, are two huge waves. One is just approaching the Western "end" of the Aleutians in a SW to NE direction while the other one in a SE by SW to NE direction is approaching the outer HI islands and at the same time appears to be surrounding them. Both of these waves have fair to copious amounts of moisture associated with them. The water vapor image of the NOAA further confirms the wave "plowing" onshore where it did (mentioned above via the West Conus IR Loop). The NPJ remains
South of our region and is in a zonal flow across that area, the upper level trough has shifted SE and immediately West of it there is a split in the flow; or, high pressure on top, trough underneath. Later today, the upper level trough [or ult] will sag further SE. Currently [12/17], we have mostly cloudy skies (Altocumulus), light haze along with minor air movement. It is from the SSE at 0 mph, then from the NNW at 0 mph, wind gust: out of the WNW to 10 mph, humidity 89%, dew point 29°, temperature 35.6°, and the barometric pressure 30.05" and rising. |
| 12/19/2010 |
6:33 AM |
0.03 |
0.8 |
0.03 |
1.7 |
0.33 |
A most interesting event appears to be another "pineapple express" originating NW of HI near the Midway Islands. From there, it bears East along the Southern perimeter of a trough before bending in a steep SW to NE direction through central CA and beyond. This direction is aided in part by the low pressure pinwheeling off the SW B.C. coast (which is responsible for ejecting small, weak waves into our area. The Conus IR Loop image, in fact, confirms this observation) and by high pressure to the SE (as this part of the system appears riding up the West side at a very steep angle). A huge wave, NW of HI, and packed with copious moisture, is another interesting development. The NPJ has shifted slightly North from yesterday,s location, the flow is from the SW to the NE, with the highest wind velocities (110-150k) over central CA and from SW to NE OR. With the direction of the flow, and the position of the low pressure {off the SW B.C. coast}, it becomes apparent why weak systems would be ejected into our region. Mid afternoon weather for 12/18-even though we have a Stratus overcast, it is not snowing like it did for about an hour earlier this morning. The amount was quickly recorded (new snow: 0.2", melted value: 0.02) before it melted. Temperatures are in the mid 30's, a light snowfall has commenced along with calm winds. Currently [12/19], we have a grey, gloomy overcast and minimal air movement. It is from the WNW at 0 mph, wind puff: out of the WSW to 6 mph, humidity 98%, dew point 29°, current snow level 500', temperature 33.8°, and the barometric pressure 29.71" and falling. |
| 12/20/2010 |
6:32 AM |
0.06 |
0.7 |
0.06 |
2.4 |
0.39 |
The low pressure is now pinwheeling just to the SW of Vancouver Island rotating cold air and weak waves into our region. Together, the low pressure and the behemoth trough are responsible for the "pineapple express" coming on shore (except for Northern CA) into CA .Both the Conus IR Loop and GOES Northern Hemisphere Composite Sector IR images confirm this observation. However, the big event IS the "pineapple express as it extends NE from HI along the Southern perimeter of the immense trough into CA (described above). In addition, its angle of entrance into CA remains steep {which was noted in yesterday's description} because of the trough {as "the express" comes around the SE side of it}, and the high pressure to the SE {as evidenced by the steep angle up the West side of it}. The NPJ is another contributor to the position of the upper level trough (clearly visible). The flow is from the SW to the NE over the area of CA {mentioned above} with 110-150k winds. Immediately West of the ult is some moderate ridging. Later today, the Southern perimeter of the ult shifts SE. Mid afternoon weather for 12/19-we have a Stratus/foggy overcast with temperatures in the mid 30's along with calm winds. Currently [12/20],, we have a Nimbostratus overcast in the form of snow and minimal air movement. It is from the NNE at 0 mph, wind puff: out of the NW to 1 mph, humidity 96%, dew point 30°, current snow level 500', temperature 34.9°, and the barometric pressure 29.59" and falling. |
| 12/21/2010 |
6:43 AM |
0.22 |
0.5 |
0.22 |
2.9 |
0.61 |
Although the "pineapple express" is still active, it is showing signs of weakening and at the same time being "squeezed". How? Four players are involved in the process. The first player is now pinwheeling off the West coast of OR after shifting SW from Vancouver Island. The cold air (second player) associated with it is pushing the Southern half of a system toward CA, while the Northern portion is forced North parallel to the WA/OR coastlines. The combination of this system (mentioned above), a behemoth sized trough (third player)effectively pushes the express SE from yesterday's location into the high pressure (fourth player) to the SE thereby causing the "squeezing" effect. The Conus IR Loop image beautifully illustrates the above description. In addition, the express does not possess the copious moisture of yesterday. Mid afternoon weather for 12/20-we have a Nimbostratus overcast in the form of intermittent snow showers. Temperatures are in the mid 30's along with calm winds. Other than partial clearing to the NE this morning [12/21], we have a low Stratus overcast, it is not precipitating, and very little via wind. It is from the NNW at 2 mph, wind puff: out of the NW to 5 mph, humidity 95%, dew point 30°, current snow level 2000' {yesterday, it was 500'}, temperature 35.1°, and the barometric pressure 29.87" and rising. |
| 12/22/2010 |
6:34 AM |
0.00 |
0.0 |
M |
M |
M |
The reason for no moisture given in the box above will be revealed in the "Duration Information". Although the "pineapple express" is no longer active, what's left of it has shifted further SE to where now it crosses central Baja and the Gulf of CA into NW Mexico and beyond. That being said, there are two low pressure systems. One is pinwheeling off the coast of Southern CA and as it rotates one system across the area just mentioned, into NV and beyond, it is also partly responsible for pushing another system (that was yesterday parallel to the WA/OR coastlines) Northward into our region. As an interesting note, it is moving North and shifting (or being pushed) East at the same time. By what?
The bigger event is in the Gulf where the second low pressure is pulling in cold air and pinwheeling West of the NW portion of Vancouver Island while moving in a NE direction toward South central B.C. Immediately South of the "cold air" is a large wave (with very little moisture associated with it) which, at this time appears on making landfall in Southern OR/Northern CA. It would appear then that the combined strength of the low pressure and wave is responsible for the high pressure shifting (or being "pushed") to the East. Farther out, there are two very large waves {one above the other in a NE to SW direction} with the Northern one just to the West of the Aleutians. Currently [12/22], we have a Nimbostratus overcast in the form of heavy snowfall for the time being in addition to minimal air movement. It is from the SSW at 0 mph, wind puff: out of the ESE to 3 mph, humidity 97%, dew point 32°, current snow level 2000', temperature 34.3°, and the barometric pressure 29.89" and rising. |
| 12/24/2010 |
5:28 AM |
0.02 |
0.0 |
M |
1.7 |
0.48 |
At this time, it appears that there is little activity IN the Gulf; when, in fact the action is occurring on its PERIMETER. The first immense system is West by SW of the Bering Sea and has the classic "comma" look as it arcs NE over a small Russian penninsula then South past the Western end of the Aleutians before bearing South by SW over the Midway Islands. At first glance, it would appear that there is another large system in B.C. extending South into our region (WA/OR) before turning SW out over the ocean. A closer look however, shows a low pressure pinwheeling off the central coast of B.C. rotating a band of moisture inland that covers all but the NW and SE portions of the province. The other player is a wave approaching WA/OR from the SW to the NE {this is congruous to the NPJ flow} as it "flows" around the SE side of an immense trough,which by the way, has a moderate pool of cold air within it. Both of these systems are well stocked with moisture. Currently [12/24], we have what appears to be an Altostratus duplicatus overcast along with minimal air movement. Due to snow melt, a core sample was taken with the following results: snow depth 1.7", melted value 0.48". These values are considerably different than a snow depth of 4.7" and a melted value of 0.90" recorded on 12/22. What little air movement we have is from he WSW at 0-2 mph, wind puff: out of the NW to 7 mph, humidity 94%, dew point 32°, current snow level 3500' (yesterday it was 2000'), temperature 37°, and the barometric pressure 30.17" and rising. A very Merry Christmas to all of you out there! |
| 12/26/2010 |
5:34 AM |
0.00 |
0.0 |
M |
0.9 |
0.26 |
There has been some changes on the perimeter of the Gulf. Just SW of the Aleutians in a NE to SW direction is what appears to be two waves as they are separated by the thinnest of margins. Followed by a brief break are two more weak waves to the SW as they descend the Western side of a mammoth trough that is loaded with cold air except for a small area immediately South of the AK mainland and off the central coast of B.C. At the same time, this trough has begun to shift inland (in an increasing negative tilt) into Northern CA. As it does, three events are noticeable/visible. Two waves (first event) are being forced North into SW B.C. though the Southern half of the Southern wave will eventually be effecting our area. As a result, this forced a system inland into Eastern WA/OR (second event) that was yesterday along the OR/WA coastlines before entering B.C. from the SW. The waves (described above and the third event) appear to be taking aim at central and Southern CA. Of all the waves described above, only events one and two have fair to moderate moisture. Although the high pressure dome is East of our region over MT, there are indications of it breaking down in the near future. The NPJ is responsible for the waves (in event one)direction as the flow is in a steep North/South flow. Later today, the ridge begins a positive tilt and the ult shifts North by NE into our region. Currently [12/26], we have partial clearing under mostly cloudy skies with occasional air movement. It is however from the ESE at 6 mph, wind puff: out of the ESE to 8 mph, humidity 93%, dew point 32°, current snow level 2500' {yesterday, it was 4500'}, temperature 37.4°, and the barometric pressure 29.73" and falling. |
| 12/27/2010 |
5:34 AM |
0.00 |
0.0 |
M |
0.9 |
0.26 |
Although the Gulf and its perimeter are very active this morning, the focus will be on just two events. The big one is the mammoth trough (first event) that has shifted North by NE into our region. This thing is loaded with very cold air from North of the Aleutians to the coastlines of SW B.C. and WA thereby effecting our area with much cooler air by the end of the work week. Immediately to the South are two waves in which the the first one appears to be coming onshore in WA, OR, and Northern CA thereby forcing the leading edge of cold air NE into SW B.C.
Directly South of this (a "trough/depression located between two high pressures) is a section of the NPJ which is responsible not only for deflecting the edge of the cold air into SW B.C., but also for the wave (second event) to come onshore where it does. Why? Because these two events just mentioned are congruous to the NPJ zonal flow (or, from West to East). Later today, the ult will shift further NE over MT and the Dakotas. Mid afternoon weather for 12/26-there is partial clearing from the NE to the East and South under mostly cloudy skies. Temperatures are in the low 40's {these mild temperatures are going to experience a big change near the end of the work week as arctic air will make its presence felt} along with occasional air movement. Currently [12/27],we have scattered Cirrus/Cirrostratus, some Altostratus to the South along with lower level clouds. There is light haze, a heavy frost on the ground and roof tops, no precipitation in the last 24 and minimal air movement. It is from the West at 4 mph, wind puff: out of the SSW to 8 mph, humidity 86%, dew point 26°, current snow level 1500' [yesterday, it was 2500'], temperature 31.4°, and the barometric pressure 30.09" and rising. |
| 12/28/2010 |
5:30 AM |
0.06 |
0.0 |
M |
0.9 |
0.36 |
Guess what! It appears as though another "pineapple express" is setting up shop between the Midway and Hawaiian Islands then bearing NE across the ocean coming onshore on the WA coast; however, the bulk of the moisture will be going into Southern OR/Northern CA. Yesterday, the immense pool of cold air that extednded from North of the Aleutians to the SW coastline of B.C. and Western WA, has split into two pools with the largest one NW of the Aleutians and South of the Klyuchi Penninsula (Russia) while the smaller one in the Gulf is NW of WA off the South central B.C. coastline. Immediately NW of this is a very large wave in a SW (just NW of the Midway Islands) to NE direction covering the middle Aleutians before turning SE. Both the express and wave (mentioned above) have fair to moderate moisture associated with them.The position of the NPJ (SW to NE before turning SE) is congruous to the direction the express has taken and why the cold air is NW of WA. Other than partial clearing from the NW to the NE, we have an Altostratus cloud cover this morning [12/28] along with light haze and minimal air movement. It is from the East at 4 mph, wind puff: out of the East to 9 mph, humidity 88%, dew point 31°, current snow level 2500' {yesterday, it was 1500'}, temperature 34.9°, and the barometric pressure 29.72" and falling. |
| 12/29/2010 |
5:07 AM |
0.04 |
0.0 |
M |
0.6 |
0.23 |
Although the pineapple express did not materialize, this extensive and lengthy wave shifted NW of yesterday's location to a position between the Midway Islands and Wake Island. From the SW it turns NE in a steep angle across the ocean terminating on the Southern Aleutians coastline before turning South into the Gulf off the Northern coast of B.C. This was followed by a pool of cold air along SW WA, OR, and Northern CA coastlines. After a break and another pool of cold air, is a low pressure system (which may become a weather player to our region in the future) located SW of Hokkaido, Japan. South of the above mentioned wave is yet another one which at this time looks to come onshore between Southern and NW Baja, CA. The Western Hemisphere image shows that all three waves have fair to moderate moisture associated with them. According to the West Conus IR Loop, the cold air (mentioned above)is being pushed South by SE into OR, Northern CA, and a small SW portion of WA. In addition, an immense trough off the Southern CA coast is deepening and shifting SE at the same time thereby confirming where the wave (mentioned above) will come onshore. This scenario is also visible on the infrared and water vapor images of the NOAA. Currently [12/29], we have a mid level overcast along with light winds. They are from the West at 8 mph, wind gust: out of the WNW to 21 mph, humidity 48% {yesterday, it was 88%}, dew point 18° {yesterday, the reading was 31°}, [these two readings suggest that the atmosphere has dried out somewhat], current snow level 500' (it was 2500' yesterday), temperature 38.5° and the barometric pressure 29.23" and falling (the last time the BP was this low was on 3/29/10 and 1/20/10 when it was 29.22" and falling). |
| 12/30/2010 |
6:18 AM |
0.00 |
0.0 |
M |
0.6 |
0.23 |
Four noticeable changes have occurred since yesterday at this time. The extensive and lengthy wave that extended NE in a steep angle from near the Midway Islands to the Southern Aleutians has shifted East by SE (first change) culminating in the Gulf as a large wave along the AK, SW Yukon, and B.C. coastlines. The NPJ flow is commensurate with this description. Followed by a break, is another wave that has also shifted SE (second change) from Hokkaido, Japan to just SW of the "outer Aleutians". The large wave that was South of the first change has broken down (third change) and possesses a subtle SW to NE pattern that terminates near the WA, OR, and CA coastlines. According to the Conus IR Loop however, this wave will continue SE down these coatlines into an immense trough off the coast of Southern CA. The Western Hemisphere image shows fair to moderate moisture in the first two waves (mentioned above), while the the third one consists of light to fair amounts. Mid afternoon weather for 12/29-we had a chaotic sky that consisted of high, mid, and low level clouds, with temperatures in the low 40's and minimal air movement. Currently [12/30], we have clear skies, no precipitation in the last 24, and minimal air movement. It is from the WNW at 0 mph, then from the WSW at 3 mph, wind puff: out of the NW to 7 mph, humidity 76% {yesterday, it was 48%}, dew point 15°, current snow level is below 500', temperature 23.7°, and the barometric pressure 29.94" and rising. |
| 12/31/2010 |
5:21 AM |
0.00 |
0.0 |
M |
0.6 |
0.23 |
Mid afternoon weather for 12/30-except for some cloudiness in the SW, we have basically clear skies, for the first time this month, with occasional light air movement from the North and East and temperatures in the low to mid 30's. Currently [12/31], we have scattered Cirrus/Cirrostratus under partly cloudy skies. No precipitation occurred during the overnight, and there is minimal air movement,. It is from the NNW at 4 mph, then from the WNW at 5 mph, wind gust: out of the NW to 10 mph, humidity 82%, dew point 8° (yesterday, it was 15°), for the time being the snow level is at the surface, current snow depth on the WA passes-Stevens: 51", Blewett: 30" and Snoqualmie: 59" compared to totals on 11/30- Stevens: 23", Blewett: 9" and Snoqualmie: 28". Temperature 18.1°, and the barometric pressure 30.26" and rising. Here are some interesting EOM stats for December: 1) total rain/snow: 2.42" which is 159% of average, 2) number of days with no precipitation: 16, 3) high BP: 30.45" on 12/07, 4) low BP: 29.23" on 12/29, 5) date with low BP and no precipitation: 29.69" on 12/18, 6)date with high BP and precipitation: 30.17" on 12/24 (0.02"), 7) average BP: 29.99", 8) average morning temperature: 33.7° {or, about 8.5° above normal}, 9) high morning temperature: 38.5° on 12/19, and 10) low morning temperature: 18.1° on 12/31. Have a happy and blessed New Year everyone! |
| 1/2/2011 |
5:44 AM |
0.00 |
0.0 |
M |
0.6 |
0.23 |
Although there are three interesting events taking place from CA to the Gulf, the focus will be on just two. The tightly wrapped and persistent low pressure (first event) has shifted further SE from yesterday's location with the center now adjacent to the Monterey Bay, CA area and rotating inland a large band of moisture from Northcentral {Lake Tahoe region} to Southern CA. The West Conus IR Loop and the West Conus Water Vapor Loop both illustrate and concur with this description. Followed by a break is a very large wave (second event) in which {yesterday} the Southern arm had a slight SW to NE direction while the Northern one had a SE by East direction. While the Southern arm is the stronger of the two, and the Northern arm is showing signs of weakening; as a combination, they are the driving force in pushing the central point of its predecessor (a wave) to the East. In addition, this wave is well laden with moisture. Mid afternoon weather for 01/01/11-we have scattered Cirrus/Cirrostratus and several Contrails under mostly clear skies. Temperatures are in the mid 20's along with calm winds due to "high pressure firmly in place over the inland NW resulting in relatively dry weather, weak winds, and poor mixing at the surface". Currently [01/02/11], we have scattered Cirrus, light haze, no precipitation in the last 24, and minimal air movement. It is from the NNW at 5-6 mph, wind puff: out of the NW to 9 mph, humidity 81%, dew point 8°, current snow level 1000', temperature 15.8°, and the barometric pressure 30.41" and rising. |
| 1/5/2011 |
5:09 AM |
T |
T |
M |
0.6 |
0.23 |
With its point of origin NE of HI, and a SW to NE direction, this wave (warm front) has come onshore covering all but the SE quadrant and the NE portion (Pend Oreille county) of WA and most of South central B.C. before bearing across NW B.C. into the Gulf. In addition to shifting slightly SE from yesterday's location, the wave is proceeding around the Southern perimeter of a cold front immediately to the North and clearly visible. Followed by a break, a low pressure appears to be developing over the outer Aleutians, and with a graceful arc, bears South South by SW. Although high pressure remains over our region, the NPJ flow over the Gulf is from the SW to NE; therefore congruous with the wave direction mentioned above. Looking ahead, the high pressure is showing signs of breaking down, the angle of the SW to NE flow steepens and shifts North of our region to North central B.C. Behind this is a developing ult followed by some minor ridging. Mid afternoon weather for 1/04-WOW! From clear skies earlier this morning, to an Altostratus Duplicatus overcast in just a matter of hours. Temperatures are in the mid 20's along with calm winds. Except for an attempt at partial clearing in the West, we have overcast skies this morning [1/05]. The haze is moderate to bad, along with minimal air movement. It is from the SSE at 1 mph, wind puff: out of the ESE to 6 mph, humidity 87%, dew point 20°, current snow level 3000', temperature 27.5 {yesterday, it was 18.5°}, and the barometric pressure 30.35" and falling. |
| 1/6/2011 |
5:32 AM |
0.00 |
0.0 |
M |
0.6 |
0.23 |
We have a very active Gulf this morning. With its point of origin NE of HI, this first wave (in a steep SW to NE angle) comes onshore in SW B.C. then extends East into Southern Alberta and Saskatchewan respectively before bearing South into central and Eastern MT, CO, and the Western Dakotas. As far as WA is concerned, only the NW portion and the coast are affected. NW of this wave is what appears to be a closed low (off the SE and SW coast of AK and the Yukon respectively) as there is rotation. As it does so, it appears to be rotating cold air into North central B.C. Both the Alaska IR and Water Vapor loops bear out this description in a beautiful way. Followed by a break, the low pressure over the outer Aleutians with a graceful arc that bears South by SW has shifted slightly East and at the same time appears to be weakening. Following a break, is yet another wave that looks like a horizontal "U". All three waves have fair to moderate moisture associated with them. The NPJ in a steep SW to NE flow, is perfectly congruous to the first wave described above. Currently,[1/06], we have a mid level overcast (along with filtered sunshine), moderate to bad haze, no precipitation in the last 24, and very little via air movement. It is from the NNE at 0 mph, wind puff: out of the East to 5 mph, humidity 89%, dew point 19°, current snow level 5000' [yesterday, it was 3000'], temperature 26.8°, and the barometric pressure 30.26" and falling. |
| 1/7/2011 |
5:19 AM |
0.01 |
0.0 |
M |
0.4 |
0.22 |
Well to the NE of HI and South of the Aleutians, the first wave (which appears to be weakening) extends East by NE across the ocean into SW (as well as the SE quadrant) B.C., North central Alberta, then straddles the B.C./Alberta border covering most of SW Alberta. As far as WA is concerned, the NW quadrant and from South central to the NE are affected. The Western and Northeastern ends of the wave have a fair amount of moisture associated with them while the middle portion contains very little. Immediately to the North, is a closed low. At this time, it appears to be rotating dry air into SW B.C. (just NW of Vancouver Island). As it does so, the wave shifts SE to its present location. The water vapor image of the NOAA illustrate this series of events (described above). Followed by a few small waves and a break, is a behemoth wave. This one is loaded with moisture and could be affecting our region in the near future. Mid afternoon weather for 1/06-partial clearing is visible to the West, NW, and NE under mostly cloudy skies {Altocumulus/Altostratus and a small area of Cirrus to the NW}. Toward the West and South, the higher summits and ridges have become almost obscured because of the stagnant air. Temperatures are in the low to mid 30's, along with calm winds. Currently [1/07], we have a Stratus overcast, the haze continues to be stagnant, and there is minimal air movement. It is from the ESE at 0 mph, wind puff: out of the NW to 6 mph, humidity 90%, dew point 28°, current snow level 5000', temperature 33.4°, and the barometric pressure 30.11" and falling. |
| 1/8/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.4 |
0.22 |
Yesterday's wave that came onshore in SW B.C., covered South central B.C., straddled the B.C./Alberta border and covered most of SW Alberta. This wave has since shifted well South of yesterday's location to come onshore in Southern OR, then extended East through Southern ID before bearing NE into SW MT. and looks to be on the perimeter of an immense low pressure (possibly a closed low) whose center is rotating from SE Alberta into SW Saskatchewan. This behemoth is affecting Saskatchewan, Alberta, B.C., and at the same time is responsible for pulling cold air off the NW coast of B.C. in a South by SE direction into Western WA and NW OR. As it does so, the middle portion of the wave (described above) is literally being torn apart. For the time being we are in a temporary zonal flow as the NPJ will shift South of our region later today. Immediately to the North is a ult and behind it, the NPJ {in a steep SW to NE flow} is approaching the West coast of AK, thereby pushing the Western arm of the ult East. Mid afternoon weather for 1/07-we have a Stratus/low cloud overcast to such an extent that the higher summits and ridges are obscured as the poor air quality continues. Temperatures are in the mid to upper 30's along with calm winds. WOW! what a difference a day makes! Currently [1/08], we have beautiful clear, sunny skies, light haze, no precipitation in the last 24, and minimal air movement. It is from the NNE at 4 mph, wind puff: out of the ENE to 8 mph, humidity 70% (yesterday, the reading was 90%), dew point 20°, current snow level 500' (it was 5000' yesterday-what a crash!), temperature 27.9°, and the barometric pressure 30.00' and falling. |
| 1/9/2011 |
5:26 AM |
T |
T |
M |
0.4 |
0.22 |
The cold air of yesterday that was being pulled into Western WA and NW OR, remains unchanged although the Southern perimeter has shifted South along the coast of North central CA and is showing no attempt at moving inland. Followed by a brief break, is a large wave trying to come onshore; however, as the leading edge makes contact with the cold air, it disintegrates thereby thwarting the effort. After another break, is another long and lengthy wave with its point of origin near the Midway Islands. In a short but steep SW to NE direction before briefly turning North, it then extends NW by NE past the outer Aleutians and into West central AK. In addition, there is clockwise rotation in this locale. How is this possible? The answer appears to be that as the NPJ is in a North/South flow (which is congruous to the wave direction), it then plunges SE by South from the high pressure apogee thereby causing the clockwise rotation. Mid afternoon weather for 1/08-the clearest area of sky is from the West toward the East and South, with partial clearing from the North to the NE. From the South to the East was a large band of Altocumulous that included an Altocumulous Lenticularis cloud over the lengthy South ridge. Temperatures are in the upper 30's along with calm winds. Currently [1/09], it has stopped snowing, there is some partial clearing, light haze, and very little air movement. It is from the East at 2 mph, wind puff: out of the ENE to 4 mph, humidity 93% [yesterday, the reading was 70%], dew point 24°, current snow level is below 500', temperature 27.5°, and the barometric pressure 30.11" and rising. |
| 1/10/2011 |
5:16 AM |
0.00 |
0.0 |
M |
0.4 |
0.22 |
Of interest this morning is a long and narrow "dry line" off the West coast of AK and North of the Aleutians closest to the mainland flowing in a NW to SE diagonal before extending across the ocean into SW WA, NE OR and the SW corner of ID. The cold air of yesterday (that had shifted South off the coast of North central CA and showed no attempt at moving inland) is nowhere to be found. As a result, a wave has come onshore in OR and North central CA. Its NW to SE boundary is flowing under the Southern perimeter of the "dry line", while its direction is governed by the NPJ {as indicated by the NW to SE flow thereby making the wave and NPJ congruous to one another}. Immediately to the SW, is a much stronger wave with the SW to NW portion bearing NE into the just mentioned wave (and as a result, looks to be weakening rapidly) while the SW to NE portion is bearing East toward Southern CA. Another item of interest was the long and lengthy wave that had is point of origin near the Midway Islands and has since shifted SE near the HI Islands. This wave is now being profoundly affected by a very large dome of high pressure (looks like a doughnut!) taking it North into Russia, across an ocean before plunging SE by South across part of the NW Territories, The Yukon and finally emerging back in the Gulf. Currently [1/10], we have a Stratus overcast, no haze, no precipitation in the last 24, and light winds. They are out of the East at 3 mph (the last time the wind was above 10 mph was on 12/10/10 and 11/16/10 when the velocities were 11 mph and 12 mph respectively), wind puff: out of the ESE to 8 mph, humidity 69%, (yesterday, the reading was 93%), dew point 16°, current snow level is below 500', temperature 28.8°, and the barometric pressure 30.43" and rising. |
| 1/11/2011 |
6:09 AM |
0.00 |
0.0 |
M |
0.4 |
0.22 |
Two sectors of the NPJ have a role in our region's weather as well as the Gulf's. The first event involves a weak wave coming onshore in SW B.C., WA, OR, and Northern CA. As it does so, its NW to SE boundary is flowing under the Southern perimeter of a "dry line"; however, its direction is governed by the NPJ ( the flow direction was just mentioned above). In addition, there appears to be a small low pressure associated with and behind this wave as rotation is visible bearing East toward NW CA {the Crescent City region}. Followed by a break, is a much stronger wave lying in a SW to NE direction, just SE of HI, before turning NW. It is from this portion that "cloud fragmentation" occurs with the remnants bearing NE. From here, the wave turns North across the middle Aleutians, and keeps West of the "dry line" (mentioned above) and AK. After a break, is yet another lengthy and extensive wave. This one is being profoundly affected by an immense high pressure dome that takes it on a route similar to yesterday. Mid afternoon weather for 1/10-not much change from earlier this morning as we have an Altostratus overcast, temperatures in the low 20's and minimal air movement from the SW. Currently [1/11], except for attempts at partial clearing toward the South, East, and West, we basically have an Altostratus overcast, light haze, no precipitation in the last 24, and very little air movement. It is however from the NNE at 0 mph, wind puff: out of the NW to 5 mph, humidity 66%, dew point 12°, current snow level is at the surface, temperature 25.9°, and the barometric pressure 30.46" and rising. |
| 1/12/2011 |
6:36 AM |
0.27 |
3.9 |
0.27 |
4.3 |
0.49 |
The current wave affecting SW B.C., WA (including the heavy snow in our area), OR and Northern CA appears to be part of a more elaborate system as it moves in a NE by East direction and affects the following areas: ID, MT, Saskatchewan, Alberta, and B.C. This wave is also associated with a large low pressure (clearly visible and with obvious rotation) rotating in the direction mentioned above. Immediately North of this system, is what looks to be a closed low (located in the Gulf) with a slight coungterclockwise rotation. How is this possible? With the system moving in a NE direction, and a "dry line" extending from the NW to the SE, has, in my opinion, the potential to cause the counterclockwise rotation. This could be illustrated by a moving line tangent to any point on the bottom half of a circle which would result in a counterclockwise rotation of the circle. Although ridging is occurring well South of our region, a ult has put a lid on its development. However, as far as the NPJ is concerned, we are in a temporary zonal flow and it is congruous to the wave's coming onshore in the areas mentioned above. Mid afternoon weather for 1/11-except for a moderate area of Cirrostratus from the West to overhead {one can observe Contrails and scattered high level clouds through this variety), we basically have an Altostratus overcast. Temperatures are in the upper 20's to low 30's along with slight air movement from the East. Currently [1/12], we have a Nimbostratus overcast in the form of light snow, with little to no air movement. It is from the North at 0 mph, then from the WNW at 0 mph, wind puff: out of the SSW to 0 mph, humidity 94% (yesterday, the reading was 66%), dew point 20° (yesterday, this reading was 12°), current snow level 1000', temperature 26.2°, and the barometric pressure 30.05" and falling |
| 1/13/2011 |
5:23 AM |
0.13 |
0.4 |
0.13 |
4.7 |
0.62 |
Although the main portion of the bow-like system appears to be exiting our region, there are several short waves coming onshore along with a small wave approaching the WA/OR coast. Followed by a break (this void appears to be occupied by a trough), is a large low pressure system (its point of origin SE of HI) with counterclockwise rotation clearly visible moving in a NE direction and bringing fair to moderate moisture with it. At this time, it appears that the Northern portion will come onshore in central to Northern B.C. Although there is slight ridging over our region, and the flow is now from the SW to the NE, a very interesting scenario has developed. With the behemoth high pressure dome as a focus, there are three upper level troughs. Between the ridging (mentioned above) and the SE side of the high pressure dome is the first ult. The second one is located immediately North of a zonal flow and the SW side of the high pressure dome and the third one is visible along the Southern perimeter of the high pressure dome. Mid afternoon weather for 1/12-we have a large area of scattered high and mid level clouds in all directions except the North. To the North and South are some large bands of Altostratus with a few scattered Cumulus to the South. Temperatures are in the upper 20's to low 30's along with minimal air movement. Currently [1/13], we have a Stratus overcast, with no precipitation occurring at the present time, and very little air movement. It is from the NNE at 0-2 mph, wind puff: out of the NW to 6 mph, humidity 94%, dew point 26°, current snow level is 6000' but at the surface on the passes, temperature 31.8°, and the barometric pressure 30.02" and falling.
|
| 1/14/2011 |
5:40 AM |
T |
T |
M |
4.7 |
0.62 |
Another bow-like system came onshore in B.C., WA and OR, with the bulk of the moisture covering B.C. (except for the NW portion and SE corner) before extending into Western Alberta. Turning
South into WA, it is affecting areas over and West of the Cascades and the Eastern third of WA going completely around our area. Immediately NW of the Northern arm is a small pool of cold air moving West although South of and parallel to the Aleutians. Could this movement to the West be attributed to the NPJ? SW of the Southern arm are two waves moving East by NE toward WA/OR, followed by a series of waves. The bulk of the system in B.C., along with the series of waves all have fair to moderate moisture associated with them. Although there is a SW to NE flow off the West coast, our region is in a temporary NW flow as there is slight ridging NW of our area. Between this and the SE arm of the high pressure dome (which by the way, is showing signs of breaking down) is an ult. Looking ahead, the ridging moves inland and shifts East of our area and the flow is from the SW to the NE into SW B.C. Mid afternoon weather for 1/13-although we still have a Stratus overcast, the evidence of sunshine is visible from the NW to the SW. Temperatures are in the low to mid 30's along with calm winds. Except for some partial clearing in the NE, we have a Stratus overcast this morning [1/14]. There is light haze and minimal air movement from the East at 0 mph, then from the SSW at 0 mph, wind puff: out of the WSW to 7 mph, humidity 94%, dew point 31° (the reading was 20° on 1/12), current snow level is 5000', temperature 30.6°, and the barometric pressure 30.10" and rising. |
| 1/15/2011 |
5:10 AM |
0.01 |
0.0 |
M |
4.7 |
0.62 |
WOW! Activity in the Gulf has really changed from yesterday at this time. The bow-like system that had covered most of B.C. before extending into Western Alberta and had affected areas over and West of the Cascades as well as the Eastern third of WA, has completely moved out of the above mentioned area. Still, there is yet another bow-like system (that is well laden with moisture) moving in an East by NE direction and coming onshore in South central B.C., WA, and OR. Behind this system is a wave in a NW to South direction just West of the outer Aleutians. After a brief break is a series of waves lined up in a NW to SE direction. In addition, there are pools of cold air between the latter two waves, a small area SE of the second wave, and on the West side of the "series" (mentioned above). Likewise, the systems/waves and the present flow of the NPJ are preventing the cold air from affecting our region. The NPJ is in a zonal flow before bearing SW to NE {just NW of HI}. Immediately to the NW of this flow, an elongated pool of cold air resides. This flow is not only congruous to the direction the fetch/"tail"[which is associated to the system mentioned above] is taking, but also to where the system comes onshore in South central B.C., WA, and OR. Mid afternoon weather for 1/14-on a lovely "spring" afternoon, we have some Cirrostratus from the SW to the South, a large band of Altostratus from the NW to the North, and Cumulus clouds streaming in from the West. Temperatures are in the upper 30's to low 40's along with calm winds. Currently [1/15], we have an Altostratus overcast, light haze, and minimal air movement. It is from the WNW at 4-6 mph, wind gust: out of the NW to 14 mph, humidity 63%, (yesterday, the reading was 94%), dew point 34°, current snow level 5000', temperature 37.5°, and the barometric pressure 30.19" and rising. |
| 1/16/2011 |
6:04 AM |
0.37 |
0.0 |
M |
1.7 |
0.30 |
WOW! What a difference day makes. We have what looks to be a resemblance to a "pineapple express". With its point of origin just to the NW of HI, the SW portion of the express has experienced substantial changes compared to yesterday when it was elongated and contained little to no moisture. As of this morning, the bottom third (or the tail) has disappeared while at the same time developed or acquired a fair to moderate amount of moisture. The NE portion of the express comes onshore in WA/OR, extends East into ID and MT before plunging SE from SE and SW B.C. and Alberta respectively. Why? Just NW of HI, the NPJ is in a SW to SE flow as it reaches SW B.C., WA and OR before plunging SE over the areas mentioned above. In addition, both the NPJ and the express are riding the West side up and over a small ridge of high pressure currently off the CA. coast. Mid afternoon weather for 1/15-although we have a mid level overcast, the clouds have thickened since this morning into a thick (and somewhat threatening in appearance) Altostratus cloud cover as the sun is completely blocked out. Temperatures are in the upper 30's to low 40's along with calm winds. Currently [1/16], it appears we have an Altostratus overcast with scattered lower level clouds and patchy fog, the precipitation has stopped along with light air movement. It is from the NNE at 2-4 mph, wind gust: out of the ESE to 12 mph, humidity 97% {yesterday, the reading was 63%}, dew point 38°, current snow level 8000' (yesterday, it was 5000'), temperature 37.9°, and the barometric pressure 29.78"{yesterday, the reading was 30.19" and rising} and falling. |
| 1/17/2011 |
5:07 AM |
0.06 |
0.0 |
M |
1.0 |
0.36 |
Although the resemblance of a "pineapple express" has dissipated, the late SE portion has shifted from just NW of HI to the SE side between Maui and the big island and appears to have weakened in the process. From here, it turns slightly NE for a relative short distance before bearing East by NE. At this point, however, it appears that the bulk of the moisture will come onshore in SW B.C., whereas the remnants will be affecting WA/OR with more clouds than precipitation. So, why is the system/wave in this particular configuration? One reason is that it is riding up the West side and cresting a moderate high pressure ridge off the CA coast, and the other is the NPJ which is congruous to the direction the wave/system is taking and where it will come onshore. Followed by a short break, is an immense low pressure system with its center South of the Klyuchi penninsula (Russia) and in a graceful arc, crosses a portion of the Bering Sea and the outer Aleutians before bearing South by SE {this portion, by the way, has a moderate amount of moisture with it} while at the same time, it slowly moves East. In addition, it is pulling in a fairly large pool of cold air. Currently [1/17], we have partly cloudy skies with the densest concentration from the NW to the East. We had very gusty winds earlier this morning and as a result, much of the snow has melted (clearly noticeable on Badger Mountain to the East). The winds are from the West at 3 mph, then from the NNE at 0 mph, wind gust: out of the WNW to 33 mph (the last occurrence of a wind gust at this velocity was recorded from the WNW at 34 mph on 7/12/10), humidity 63% [yesterday, it was 97%], dew point 35°, current snow level 4500' {yesterday, it was 8000'}, temperature 52.2°, and the barometric pressure 29.75" and falling. |
| 1/18/2011 |
5:35 AM |
0.00 |
0.0 |
M |
0.0 |
0.00 |
Some very interesting events are occurring in and near the Gulf this morning. The first of which is a weak wave coming onshore in WA/OR and extending East into the ID panhandle and Western MT while at the same time shifting to the SE. What is causing this shift? The solution to this question appears to be a "dry line" (second event) moving in a East by SE direction from SE AK to WA before turning East into WA. This movement of the "dry line" is the driving force in literally pushing the wave to the SE. The third event is a long, lengthy wave with its point of origin between the Midway and HI islands. From there, it bears NE in a steep angle as it appears to be riding up the West side of a high pressure ridge into the Gulf (it is this portion of the wave that contains a fair amount of moisture) before turning SW toward the PNW. Immediately to the NW, is the immense low pressure system (fourth event) whose center appears to be slightly weakened. Although its central location remains relatively unchanged, it has moved East since yesterday toward SW AK, contains fair to moderate moisture and continues to pull in a fairly large pool of cold air. The NPJ in a SW to NE flow (around the perimeter of this immense low pressure system) is congruous to the direction this wave is taking before changing to a NW flow across the PNW. Currently [1/18], we have an Altostratus overcast, no precipitation in the last 24, there is virtually no snow on the ground except for where it has been shoveled or is in the shade. At the present time, the air movement is minimal; although it is from the NNW at 3-4 mph, wind gust: out of the West to 18 mph, humidity 61%, dew point 26°, current snow level 1500' {yesterday, it was 4500'}, temperature 41.7° ( or, 10.5 degrees cooler than yesterday's reading of 52.2°), and the barometric pressure 30.17" and rising. |
| 1/19/2011 |
5:40 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A few interesting occurrences have transpired to our long and lengthy wave of yesterday. With the disorganized SE portion no longer visible, the wave has a much more organized look to it with its point of origin SE of HI. From here, it bears NW in a graceful arc, before turning NE into the Gulf coming onshore in NW B.C., the SW and Southern boundaries of the Yukon Territories and AK respectively before turning NW across the Bering Sea. Followed by a break, there appears to be a small low pressure system near SW AK as some counterclockwise rotation is visible. This is clearly seen on the AK IR Loop image.
In addition, the Southern two thirds has shifted slightly SE (this portion contains very little moisture), while the Northern third shifted to the NE (whereas this section is loaded with fair to moderate moisture) and is much more organized than yesterday. So, why is the width of the wave narrow and relatively consistent in its NE flow? The NW side is flowing around the SE side of an ult (which by the way, contains several small waves and a large pool of cold air) while the SE side appears to be riding up the West side and cresting a high pressure ridge. This description concurs with the NPJ flow as there is a high pressure ridge dominating the Gulf. Currently [1/19], we basically have clear skies except for some scattered clouds (Cumulus) to the SW and patchy fog to the East {Badger Mountain}. No precipitation has occurred during the overnight, there was a heavy frost on the ground earlier this morning, along with light haze, and very little air movement. It is from the NNE at 1 mph, wind puff: out of the ENE to 5 mph, humidity 99% (yesterday the reading was 61%), dew point 26° current snow level 2000', temperature 30° [this is about 12 and 22 degrees cooler than on 1/18 and 1/17 respectively], and the barometric pressure 30.33" and rising. |
| 1/20/2011 |
5:02 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Some significant changes have occurred to our "organized" wave since yesterday as it came onshore in NW B.C., the SW and Southern boundaries of the Yukon and AK respectively (which by the way, is the farthest North that a wave resembling a "pineapple express" has been observed). It has shifted well to the SE of yesterday's locale, is now NE of HI and extends in a SW to NE direction to come onshore in SW B.C. (containing little to no moisture). However, from SW B.C. East, this bulk of moderate to heavy moisture (in spots) covers most of B.C. and Alberta and North central Saskatchewan while at the same time turning SE into Eastern WA, the panhandle of ID and NW MT. In addition, this wave (mentioned above) appears to be riding up and over something What? There are two possibilities. Although a behemoth sized region of dry air extends South from Southern OR to Baja, CA and well out in the Pacific, it does not appear to be a contributor to the wave's direction after looking at several satellite images. The other possibility is that it is congruous to the NPJ flow (from the SW to the NE). Immediately to the NW is another wave part of which looks to come onshore in SW AK and the rest of it into SE AK, SW Yukon and North central B.C. respectively. Currently [1/20], we have partly cloudy skies {mid and low level clouds}, light to moderate haze, a light frost earlier this morning, no precipitation in the last 24, and little to no air movement. What we have is from the West at 0 mph, wind puff: out of the West to 5 mph, humidity 93%, dew point 27°, current snow level 2000', temperature 32.2°, and the barometric pressure 30.36" and rising. |
| 1/21/2011 |
6:11 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Some interesting changes have occurred in the Gulf since yesterday. Our persistent wave has shifted SE from yesterday's locale, a disorganized "cluster of clouds" has moved East attaching itself to the SW portion of the wave giving it a more organized look and resembling, one more time, a "pineapple express" even though it is North of HI. Immediately NE of the SW portion is a large wave and behind this is a conglomerate of small waves with cold air visible (via satellite images) on the NE and West sides. Now for some interesting meteorlogical action! NW of our persistent wave and East of the "large wave" (mentioned above)is a moderate pool of dry air with this whole scenario moving NE! As this pool of dry air shifts East, it forces a system all ready on shore further East {the bulk of the moisture is in B.C. and NW Alberta}, and at the same time SE into the PNW including WA, OR, ID panhandle and NW MT. So, in conclusion, this wave is flowing between the SE side of the moderate pool of dry air to the NW and over a behemoth sized region of dry air to the South compressing the Northern portion as it does so. Currently [1/21], we have partly cloudy skies consisting of mid and high level cloudiness, moderate to bad haze, no precipitation in the last 24, and very little air movement (this is forecast to undergo a significant change beginning late this afternoon). It is however from the East at 0 mph, wind puff: out of the ESE to 7 mph, humidity 89%, dew point 28°, current snow level 6000' [yesterday, it was 2000'], temperature 35.8°, and the barometric pressure 30.18" and falling. |
| 1/22/2011 |
5:42 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Our persistent wave (resembling a "pineapple express") has undergone several changes in the past 24. Though well to the NE of HI, two thirds of yesterday's SW portion is no longer "visible", there has been a major shift to the NW and in a steep SW to NE angle comes onshore in the NW quadrant of B.C. affecting the SE and SW quadrants of the Yukon and NW Territories respectively (or just SE of where it came onshore on 1/19/11). Whereas yesterday this wave had very little moisture associated with it, today is a totally different scene with fair to moderate amounts of moisture. Though it is moving in an East by NE direction and at the same time shifting SE, what is the driving force behind this movement? Immediately NW of it, is a pool of dry air and as it shifts SE, forces the wave in the same direction. So, like yesterday, this wave is flowing between a pool of dry air to the NW and up the NW side of a behemoth sized region of dry air or a high pressure ridge to the SE. After a brief break, is another large wave, also with fair to moderate moisture.The interesting feature about the waves and the pool of dry air is that they are all shifting to the NE! Currently [1/22], we have clear skies, no precipitation in the past 24, and very little air movement. It is from the ESE at 2 mph, then from the East at 1 mph, wind gust: out of the NNE at 22 mph {the forecast for strong winds did not materialize at this observation site}, humidity 58% (yesterday, the reading was 89%), dew point 28°, current snow level 4500' [yesterday, it was 6000'], temperature 46.6°, and the barometric pressure 30.22" and rising. |
| 1/23/2011 |
5:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Our persistent wave (no longer a "pineapple express") has undergone a major North by NE shift to merge with a low pressure system with its center rotating counterclockwise South of and near the outer Aleutians. As it does, it is pulling in the first of three waves in addition to numerous smaller ones, thereby pushing/forcing our "persistent wave" in an East by NE direction. As a result, it is currently coming onshore in Southern AK, the SW corner of the Yukon and North central B.C. and is loaded with moisture. It's hard to believe that yesterday, it was a large wave with a graceful arc that extended in a NW to SE direction (just brushing the outer Aleutians) before bearing South. Although there is some negative axis ridging occurring in the Gulf, the NPJ is relatively flat in our region. However, looking ahead, the high pressure shifts East, and strengthens at the same time while the West side is in a steep SW to NE angle. Mid afternoon weather for 1/22-while the mid West and East are firmly locked into winter along with frigid temperatures, we out here in the West are experiencing springtime in January. From clear skies earlier this morning to one of high level clouds (Cirrus/Cirrostratus) West of an imaginary North-South line (along with some "horse tails" from North to South) East of this line consists of partly cloudy skies with some Altocumulus clouds in the East as well as the NE along with a small area of Altostratus from the South to the SE. Temperatures are in the low to mid 50's with very little air movement. Currently [1/23], we have mostly clear skies with scattered mid and high level clouds, no precipitation in the last 24, light haze, and very little air movement. It is from the ESE at 0 mph, wind puff: out of the WSW to 7 mph, humidity 84% (yesterday, the reading was 58%), dew point 31°, current snow level 5000', temperature 34.9°, and the barometric pressure 30.13" and falling. |
| 1/24/2011 |
5:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Only remnants remain of yesterday's well organized system even though they continue to affect SW and Southern AK, the SW corner of the Yukon, NW and South central B.C., Western WA and NW OR before bearing SW into the Pacific. The star of the show is a moderate sized low pressure system in the Gulf rotating in a East by NE direction (visible on the AK IR Loop image). This system is responsible for several simultaneous events. As it rotates in the East by NE direction, it forces or pushes a moderate pool of dry air (visible also on the West Conus Infrared, Water Vapor and AK IR Loop images) and two medium sized waves onshore in the areas mentioned above. Likewise, it appears to be pulling in "clouds" from the SW coast of AK across the Aleutians, a small pool of cold air, the first, and largest wave of many smaller ones. It also contains a fair amount of moisture. As an interesting side light, there appear to be two small low pressure systems developing. One is near the middle of the Aleutians immediately NW of our "star" and the other is just off the coast of WA. Although the high pressure ridge is over our area, it is "tilting" to the East and showing signs of breaking down. As the ridge flattens then plunges SE later today, it enhances further development of an ult from the Mid West to the SW (AZ, TX, etc.) Currently [1/24], we have an Altostratus overcast with the West looking somewhat threatening at this time. There has been no precipitation in the last 24, light haze is visible, with little to no air movement. It is from the NNE to 0 mph, then from the West at 3 mph, wind puff: out of the West at 4 mph, humidity 91%, dew point 30°, current snow level 6000' {yesterday, it was 5000'}, temperature 37.4°, and the barometric pressure 30.20" and rising. |
| 1/25/2011 |
5:07 AM |
0.02 |
0.0 |
M |
0.0 |
M |
The main attraction this morning is a pool of cold air moving SE, several waves of moderate size followed by a very large one (all of which contain fair to moderate amounts of moisture) moving in an East by NE direction thereby forcing yesterday's low pressure system (or the "star") from the Gulf {South of the Aleutians nearest the AK mainland} NE with the center now located in SE AK (the counterclockwise rotation is nicely illustrated on the AK IR Loop image). From this location, it extends East across the central portion of the Yukon, SW quadrant of the NW Territories before bearing SE {and being forced East at the same time} in a graceful arc from NW to SW Alberta. Simultaneously, it appears to be weakening and falling apart as the NE boundary is not advancing and therefore suggests the possibility of it encountering the SW border of cold, dry Arctic air. So, why are the waves in a steep SW to NE angle and coming onshore in B.C.? Even though the larger one is proceeding around the SE side of what looks to be a trough, the NPJ in a steep SW to NE flow is congruous to the direction and where the waves come onshore in B.C. [which is well North of our region]. Mid afternoon weather for 1/24-we have a Nimbostratus overcast in the form of light intermittent showers; although, to the South, a small area of Altostratus is visible, with lower level Cumulus moving in from the West. Temperatures are in the upper 30's to low 40's along with minimal air movement from the North. Currently [1/25], we have a low Stratus/foggy overcast (commonly known as socked in!) with little to no air movement. It is from the SSE at 0 mph, wind puff: out of the NW to 8 mph, humidity 100%, dew point 33°, current snow level 4500' {yesterday, it was 6000'}, temperature 36°, and the barometric pressure 30.27" and rising. |
| 1/26/2011 |
5:10 AM |
0.00 |
0.0 |
M |
0.0 |
M |
There are five events occurring simultaneously this morning, most of which are in or near the Gulf. The first and most obvious is the long, narrow, lengthy wave with its point of origin NE of HI and in a steep SW to NE direction crosses the ocean to come onshore in NW B.C., then continues that direction into NW Alberta before turning SE into North central Saskatchewan. Next to this wave, is a much smaller, pencil thin wave moving in a similar North by NE direction and showing indications of coming onshore in WA/OR. By combining the directions of the first wave (NE and mentioned above) with that of a second ( moving East by NE), creates the effect of pushing a "band of clouds" (along the Southern coast of AK) in a NE direction while at the same time forcing a band of clouds in a NW direction along the SW coast of AK culminating in what appears to be a developing low pressure off the West coast of AK as there is counterclockwise rotation and a pulling in of cold air. Between the leading edge of the second wave and the "band of clouds" (mentioned above), is a small "channel" through which additional cold air is moving before turning SW to flow like a river between the two waves. This is nicely illustrated on the AK IR and Water Vapor images. The "agent" responsible for the steep SW to NE angle of the first wave would fall on the NPJ as it is congruous to the direction and its coming onshore in NW B.C. Currently [1/26], we have a low Stratus overcast, moderate haze, no precipitation in the last 24, and little to no air movement. It is from the SSE at 0-1 mph, wind puff: out of the NW to 4 mph, humidity 94%, dew point 33°, current snow level 7500' {yesterday, it was 4500'}, temperature 38.1°, and the barometric pressure 30.38" and rising. |
| 1/27/2011 |
5:04 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The reason for focusing on the Gulf and the NPJ, is because one is the birthplace of atmospheric disturbances and the other is is the engine that delivers these phenomenon to the PNW. Although our long, narrow, lengthy wave, with its point of origin NE of HI has dissipated, it has been replaced by a low pressure system , with its counterclockwise rotation clearly illustrated by the West Conus IR Loop image and is simultaneously causing three events to occur. It is pulling in moisture from the tropical climes, as well as the leading edge of the next wave while at the same time forcing a wave NE into SW B.C. Followed by a brief break that appears to be a small river of dry air flowing between these two waves, is the Southern portion of the second wave that has basically shifted NE from yesterday's location. With its center now located just South of the outer Aleutians and the counterclockwise rotation clearly visible on the AK IR Loop image, it is not only pulling two thirds of the Southern wave in a NW direction and at the same time the leading edge of a large pool of cold air, but also forcing the bulk of moisture into SW AK and North of the middle Aleutians, while the bottom third bears NE. Currently [1/27], the low Stratus continues, obscuring the higher ridges and summits around the valley, the haze is moderate, no precipitation in the last 24, and the "winds" are almost non existent. They are from the NNW at 0 mph, wind puff: out of the NW to 6 mph, humidity 93%, dew point 33°, current snow level 9500' (yesterday, it was 7500'. This is quite high for January), temperature 39.2°, and the barometric pressure 30.33" and rising. |
| 1/28/2011 |
5:30 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday's low pressure system, with its center located in the Pacific adjacent to the OR/CA border, has shifted well to the NE across NW Vancouver Island and into SW B.C., and is showing signs of weakening as it does so. Moving to the NE, it pushes a band of clouds in the same direction that extend across central B.C. before turning SE near the B.C./Alberta border then South into the Eastern third of WA, across the NW quadrant of OR into the Pacific. At the same time, it pulls up a pencil thin "band of clouds" from the next wave in a NE direction. Currently, this wave is moving in an East by NE direction and looks to come on shore in Southern OR, CA, and Northern Baja, CA. Why is this so? Immediately behind the upper third of the wave, is a low pressure system (its counterclockwise rotation clearly visible on the West Conus Water Vapor image) that appears to be pulling in a thin band of dry air and is responsible for pushing the wave in the direction (mentioned above). Followed by a break, are three more waves all of which have a fair amount of moisture associated with them {including its predecessor to the East). Mid afternoon weather for 1/27-although the lower elevations are cloud free, we continue with the low Stratus overcast, (which will continue into early next week) as the higher summits and ridge tops are obscured from view. Temperatures are in the upper 30's to low 40's along with minimal air movement from the West. Currently [1/28], we have a low Stratus overcast although the Western sky has brightened considerably in the last few minutes, no precipitation in the last 24, moderate haze, and very little air movement. It is from the NNW to 0 mph, wind puff: out of the ESE to 6 mph, humidity 89%, dew point 32°, current snow level 4500' (yesterday, it was 9500'; OR, a drop of 208.3'/hour per 24 hours!),temperature 38.7°, and the barometric pressure 30.03" and falling. |
| 1/29/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although there are some very interesting changes or developments in the Gulf this morning, the focus will be on two events. The wave that looked to come onshore in Southern OR, CA, and Baja, CA yesterday did not materialize; although, it appears that what's left of this wave is now associated with a low pressure system currently adjacent to the Southern OR/Northern CA coasts. Its movement in a SE direction and the counterclockwise rotation is beautifully illustrated on the West Conus IR Loop image. In a nice NE arc, it extends East into WA, then turns South along the OR and Northern CA coasts before bearing SW over the ocean. It is this portion of the system that is noteworthy as it is being pushed to the SE and as a result, forces or lifts the SE portion of the arc (mentioned above) into SW WA and another existing wave into the Eastern third of WA {including NE WA, the Spokane area and the panhandle of ID}. What caused the portion of the system over the ocean to be pushed to the SE? A large wave ( SW of the system) is moving East with the leading edge of it flowing along the SW boundary of the system, while at the same time plunges in a SE direction. Mid afternoon weather for 1/29-the "high pressure is in the process of breaking down today over the inland NW" even though the low Stratus/fog is still with us. There is limited partial clearing from toward the West to directly overhead (as this area of the sky is just marginally visible through the thinning clouds) and in the East. Temperatures are still in the upper 30's to low 40's along with calm winds. Currently [1/30], we have a low Stratus/fog overcast, no precipitation in the last 24, the haze is moderate to bad, and the "winds" are almost non existent. They are from the SSE at 0 mph, wind puff: out of the East to 4 mph, humidity 92%, dew point 33°, current snow level 4000', temperature 39.4°, and the barometric pressure 29.97" and falling. |
| 1/30/2011 |
5:23 AM |
T |
0.0 |
M |
0.0 |
M |
Yesterday, the low pressure that was adjacent to the Southern OR/Northern CA coasts, has continued on its SE journey with its center now located around the Lake Tahoe, CA region. Not as distinctive, and somewhat weaker than yesterday's appearance (that being the classic "comma" look)it is still having some affect on the PNW weather. As the cold, dry air moves South from B.C., into the panhandle of ID, NW MT and OR respectively, it forces or pushes existing "cloud banks" to the SE, whereby a narrow band of dry air is drawn in from NW OR and in a graceful arc, extends briefly SW before turning SE to come on shore in Southern CA to terminate in SW NV relatively near its center. Behind the "dry air", is a large wave (with a moderate amount of moisture associated with it) lying in a SW to NE plane and at the same time "tumbling" to the SE, while the leading edge is moving NE into some dry air {off the B.C. coast} and appears that it will come onshore in central to SW B.C. The "tumbling" action (mentioned above) could best be illustrated by the high volume of water cascading down a stream bed during runoff and what happens when it encounters a large boulder.
At the same time this wave is moving SE and coming under the influence of the low pressure system, it is flowing around the SE side of the dry air. Although our area is under the influence of a relatively small ult, there is some ridging occurring off the WA/OR coasts and will briefly develop into strong high pressure over the next few days before commencing to break down. Currently [1/30], we have a mid level overcast {no low Stratus/fog for the time being as the mountains and ridges around the valley are visible!}, light haze, and very little air movement. It is from the SSW at 0-1 mph, wind gust: out of the ESE to 10 mph, humidity 98%, dew point 30°, current snow level 1500' (yesterday, it was 4000'), temperature 36.3°, and the barometric pressure 30.07" and falling. |
| 1/31/2011 |
4:54 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Because of an oversight, the first order of business will be to correct yesterday's total rainfall amount. It should read 0.03" instead of a Trace. Mid afternoon weather for 1/30-it would appear as though we have quite a mixture of clouds (some Altostratus, Altocumulus, and Cumulus) comprising the overcast conditions this afternoon. Temperatures are in the low to mid 30's (or, about 6 to 8 degrees cooler than yesterday at this time) along with light breezes from the North. Currently [1/31], we have what appears to be an Altostratus duplicatus overcast, no precipitation in the last 24, light haze, and little to no air movement; although, it has picked up somewhat since earlier this morning. It is from the South at 2 mph, wind puff: out of the SSW to 5 mph, humidity 54%, dew point 13° { both of these readings were 98% and 30°yesterday, thereby indicating the infiltration of cold, dry arctic air}, the snow level is 1500', snow depth on the WA passes as of 1/31 compared to 12/30/10 totals- Stevens: now 55", then 51", Blewett: now 17", then 30", Snoqualmie: now 46", then 59", temperature 30.4°, and the barometric pressure 30.52" and rising (since then, it has risen to a reading of 30.60"- and rising- which is the highest reading on record thus far). Some interesting EOM stats for January- 1) total rain/snow: 0.90", OR, 66.7% of average, 2) number of days with no precipitation: 23, 3) high BP: 30.52" on 1/31, 4) low BP: 29.75" (only three days had a reading of less than 30.00"!), 5) date with low BP and no precipitation: this event did not happen, 6) date with high BP and precipitation: 30.27" on 1/25 (0.02"), 7) average BP: 30.21", 8) average morning temperature: 32.1°, 9) high morning temperature: 52.2° on 1/17, and 10) low morning temperature 15.1° on 1/03. |
| 2/1/2011 |
5:03 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Our "pineapple express" has undergone many eventful changes in the past 24 hours. With its point of origin now SE of the big island (HI), this extensively long and narrow wave begins its journey in a general and steep SE to NW direction before turning briefly North and then finally NW by North along the NW B.C. coast into the Eastern third of AK and Western Yukon Territories respectively. As this wave is flowing North, it is simultaneously shifting East with the middle portion thinning in the process. Likewise, it is flowing around a river of dry air (which accounts for the steep angles) along its SE and Northern perimeter. These are nicely illustrated by the West Conus NH IR loop and the Geostationary Satellite Server Water Vapor images. Behind this river of dry air, is a large low pressure system {which contains a fair amount of moisture}, with its center well South of the outer Aleutians as well as most of the system's counterclockwise rotation, the NE portion of this system along with the Northern portion of our lengthy wave are moving synchronously to the NE and are awesomely illustrated on the Alaska IR Loop image. Currently [2/01], we have clear skies, light to moderate haze, no precipitation in the last 24, and minimal air movement. It is from the NNW at 1 mph, wind puff: out of the NNW to 5 mph, humidity 88%, dew point 14°, current snow level 2000', temperature 21.2°, and the barometric pressure 30.78" and rising (once again, a second consecutive record thus far!).
|
| 2/3/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Our low pressure system of yesterday (with its center located well South of the outer Aleutians) has moved well to the NE with its center (and the counterclockwise rotation clearly visible) now located in SW AK. At the same time, the Southern half is being torn apart with the remnant moving East through Alberta and Saskatchewan. This is due to a very large low pressure system, with its point of origin West of the Midway Islands, it turns in a gradual SW to NE direction before bearing NE to come onshore in NW B.C. In addition, it appears that this system (containing fair to moderate moisture) is not only pulling in a narrow band of dry air, but is also
riding up the NW side of a high pressure ridge. The NPJ is congruous with the direction and where this system comes on shore {SW to NE and NW B.C. respectively}. According to the NWS Climate Prediction Center Official Forecast, the three month outlook for February, March, and April calls for below normal temperatures and an equal chance to above normal precipitation. Currently [2/03], we have a mid level overcast, with a few cloud breaks toward the West. Conditions consist of light to moderate haze, no precipitation in the last 24, and minimal air movement. It is from the West at 1 mph, wind puff: out of the East at 2 mph, humidity 79%, dew point 18°, current snow level 6500' (yesterday, it was 5000'. These high freezing levels, during the first two months of winter, have had a profound effect on the snow pack at pass levels), temperature 27°, and the barometric pressure 30.67" and rising. |
| 2/5/2011 |
5:57 AM |
0.03 |
0.0 |
M |
0.0 |
M |
There was no report for 2/04/11, because the Internet in our are was unavailable for the entire day. So, the amount of precipitation shown in the box above was yesterday's total. At first glance, it would appear that there is one enormous, conglomerate system in the Gulf before extending SW. Upon closer examination however, there are two distinct entities. The first of which is a wave (well laden with moisture and moving in a NE direction) with its point of origin NE of HI (even though the tail extends in a gentle NE to SW direction between the Midway and HI islands {Ni'ihau and Kauai specifically} and extends in a steep SW to NE angle to come onshore along the entire West coast of B.C. (except for the NW corner) before turning SE into the PNW. The trajectory of this wave is governed in part by two areas of dry air (a pencil thin river on the NW side and a large pool that extends from beyond Baja, CA in a NW direction that effectively compresses the wave near its apex. {this is nicely illustrated both on the AK Water Vapor Loop and Geostationary Satellite Server images). The other factor is that it is riding up and over a ridge of high pressure. This brings us to the second entity-a remnant. As everything is moving NE, and the wave is cresting the high pressure ridge, it is forcing the remnant in a NW direction over the Aleutians off SW AK and at the same time being stretched {This too, is nicely illustrated on the AK Water Vapor loop image}. Currently [2/05], we have a mid level overcast, no precipitation in the last 24, the haze is light to moderate, and the "winds" are minimal. They are out of the WNW and West at 0 mph, then from the SSE at 1 mph, wind gust: out of the WNW to 20 mph, humidity 57%, dew point 26°, current snow level 3500', temperature 43.3° (in an hour, it dropped another 4.6°), and the barometric pressure 30.31" and falling.
|
| 2/7/2011 |
5:14 AM |
0.16 |
0.0 |
M |
0.0 |
M |
The first item of interest reveals a much better developed and more intense system-in contrast to yesterday's- with the bulk of the moisture (fair to moderate), located at or near the apex of this system. The center is now located South of the middle Aleutians after its Northern shift from yesterday's location and the counterclockwise rotation can be clearly seen pulling in a few very small waves in addition to the leading edge of a moderate pool of cold air. Mid afternoon weather for 2/06- we have a grey and somewhat gloomy low Stratus/fog overcast, with the higher ridges and summits obscured from view {and no rain since this morning!}with temperatures in the upper 30's to low 40's and minimal air movement. Currently [2/07], the skies are mostly cloudy except for some partial clearing from the NW to the NE, clear to light haze, and minimal air movement; although, the winds howled during the early A.M. and drove sheets of rain from North to South! Very impressive indeed! They are currently from the NNW at 6 mph, wind gust: out of the West to 37 mph, humidity 61% (yesterday, the reading was 88%), dew point 29°, current snow level 2000' {it was at 5500' yesterday, before falling to 2000' last night}, temperature 43.5°, and the barometric pressure 30.02" and falling. There was much more to this discussion; however, time was short. |
| 2/8/2011 |
5:36 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The low pressure system ( with the classic comma appearance) has experienced a few changes since yesterday. The entire system has shifted NE, with its counterclockwise rotating center now located just South of the Aleutians closest to the AK mainland. So, why is the main part of this system moving East by NE? The major player is a relatively small pool of cold air immediately SE of its center. With the counterclockwise motion pulling in the leading portion of this pool, it is having a decisive effect on the larger pool as it follows suit in a NE direction, thereby forcing the main part of the system in a East by NE direction into SE, SW AK and the Yukon respectively before turning SE along the North central B.C. coast. Immediately South of the "pool" (mentioned above) are two waves adjacent to each other and separated by a small and narrow "pool" of cold air. As they come into contact with the Southern boundary of the "pool", the flow turns sharply to the NE. {This entire discussion is nicely illustrated on the AK IR Loop image}. All of the waves in or relatively near the Gulf contain a fair amount of moisture. Currently [2/08], we have a mid level overcast except for a small area of partial clearing in the West. The conditions consist of light haze, no precipitation in the last 24, and minimal air movement. It is from the East at 2 mph, then from the ESE at 2 mph, wind gust" out of the NNW to 11 mph (yesterday, it was out of the West to 37 mph), humidity 79%, dew point 29°, current snow level 1500', temperature 38.5°, and the barometric pressure 30.30" and rising. |
| 2/9/2011 |
5:17 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Probably the most significant changes have come to the two waves that yesterday were adjacent to each other and the large pool of cold air immediately to the West of the second wave. Since yesterday, this "pool" (just mentioned) has developed into a modified trough and as a result the second of the two waves developed into a low pressure system with the center well South of the middle Aleutians. With its counterclockwise motion (and moving in an East by NE direction)it is currently in the process of pulling in a long, pencil thin river of dry air and quite probably a small portion ( the SW corner) of the modified trough {this is nicely illustrated on the AK Water Vapor and IR Loop images respectively}. As the "main body" attempts to follow suit to wrap around the center, it can't because it is being forced NE by the advancing cold, dry air of the modified trough. Now coming into contact with a remnant ( the SW side) of yesterday's relatively small pool of cold air, it forces one wave to flow along its SE boundary into NW B.C., and the other into SW B.C. By way of interest, the NPJ is well North of AK; however, in a NW to SE direction, it flows over all (but the Western section) of the NW Territories, Alberta and Saskatchewan respectively. Conditions for 2/09 are clear skies, light to moderate haze, no precipitation in the last 24, and minimal air movement. It is from the East at 0 mph, then from the ESE at 2-4 mph, wind puff: out of the SE to 5 mph, humidity 75%, dew point 20° (yesterday, the humidity and dew point readings were 79% and 29° respectively, thereby indicating the presence of somewhat drier and modified arctic air), current snow level 2500' {yesterday, it was 1500'}, temperature 31.3°, and the barometric pressure 30.53" and rising. |
| 2/10/2011 |
5:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A few changes have transpired in the last 24 hours. The low pressure system of yesterday (along with a trough), have shifted NE and it {the lp system} appears as one enormous entity that graces SW AK, then in a nice arc, bears SE along the B.C. coast before turning abruptly SW. Upon closer scrutiny however, there are two distinct entities: the low pressure described above, and a wave adjacent to the SE boundary of the low pressure. Now, with the center moving East and located well South of the inner Aleutians (closest to mainland AK), the counterclockwise motion can be seen pulling in cold, dry air and quite probably a small portion (or, the SE corner) of the modified trough thereby forcing the main body of the low pressure into the areas described above and the wave (mentioned above) in a SW to NE direction which, at this time, looks to brush the SE portion of Vancouver Island and simultaneously, come onshore in SW WA with the bulk going into OR. In addition, a long, narrow river of cold, dry air, off the Western AK coast has come under the influence of the counterclockwise rotation as the Southern boundary turns SE toward the rotation {This is well illustrated by the AK IR and Water Vapor Loop images respectively}. Mid afternoon weather for 2/09-scattered Cirrus, a few Contrails and Cirrostratus clouds have graced the skies on a pleasant but dry winter afternoon. Temperatures are in the low to mid 40's along with calm winds. Current conditions for 2/10 consist of widely scattered clouds under mostly clear skies, no precipitation during the overnight, light to moderate haze, and minimal air movement. It is from the ESE at 0 mph, then from the NNE at 1 mph, wind puff: out of the SSE to 5 mph, humidity 84%, dew point 21°, current snow level 5000' (yesterday, it was 2500'), temperature 30.7°, and the barometric pressure 30.34" and falling. |
| 2/11/2011 |
5:25 AM |
0.00 |
0.0 |
M |
0.0 |
M |
There appears to be two players in the scheme of things that culminate to a very interesting ending. The first of which are the comparable characteristics of a "pineapple express" with its point of origin NE of HI and flowing in a SW to NE direction, comes onshore in SW B.C. (then extends NE to cover all of Southern B.C.), WA and OR respectively. Although being a fairly large wave/system, it contains surprisingly little moisture except for the "head" (mentioned above) and along the SW side of a trough {just to the NE of HI}. Behind this trough, are several waves all of which contain fair to moderate moisture.The other player is a wave moving in a SE direction and simultaneously approaches the West and SW coasts of AK respectively. In so doing, it is having a distinct effect on a remnant of yesterday's low pressure system (which extends from Southern AK into the Gulf) by pushing it in a SE direction and at the same time forces a relatively large pool of cold air South by SE. So, this system is flowing around the SE perimeter of cold, dry air, while the SE side is riding up and over the NW side of a mammoth sized region of dry air. Current conditions for 2/11 consist of an Altostratus overcast except in the West where it is Cirrostratus. No precipitation has occurred in the last 24, the haze is moderate to bad, and we have minimal air movement. It is from the East at 0 mph, wind puff: out of the SE to 4 mph, humidity 82%, dew point 25°, current snow level 6500' {yesterday, it was 5000'}, temperature 34.7°, and the barometric pressure 30.23" and falling. |
| 2/12/2011 |
5:24 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A few things have transpired to the robust "system" that once characterized a "pineapple express". Shifting slightly SE from yesterday's location, its point of origin is now NE of the big island (HI), the width of the main body has considerably condensed, and is loosely attached to its Northern counterpart. With regard to moisture, the bulk is in the B.C. and Alberta provinces as well as parts of WA, Northern ID, NW and central MT with a small, narrow band along the SW side near the point of origin. As this system comes onshore in SW B.C., WA and OR, there appears to be snow bands over the coastal range of SW B.C., the Cascades of WA and OR, along the B.C. Alberta border (the Banff/Jasper area), before turning South by SE
into the ID panhandle, NW and central MT respectively. {This is nicely illustrated on the AK and West Conus IR Loop images}. Although our region is still under the influence of high pressure, there are indications that it will quickly break down over the next few days. The NPJ is responsible for and congruous to where the "system" came onshore (South central B.C.) and dispersing into the areas mentioned above. Current conditions for 2/12-under mostly cloudy skies, the dominant type are Cirrostratus along with a few Contrails in the NE, and scattered Cirrus in the West. No moisture has transpired in the last 24, the haze is bad and appears to be getting worse, and likewise, our air movement is minimal. It is from the NNW at 0 mph, wind puff: out of the ESE to 7 mph, humidity 89%, dew point 28°, current snow level 4000' (yesterday, it was 6500'), temperature 32.4°, and the barometric pressure 30.00" and falling. |
| 2/13/2011 |
5:16 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Some fascinating dynamics are in progress in and near the Gulf as well as elsewhere. The "system" that characterized a "pineapple express" for the last two days, has continued to deteriorate to where now it resembles a large wave containing a fair amount of moisture. Yesterday, a trough that was located NE of HI, has dramatically shifted East by SE and simultaneously its Southern boundary has also sagged SE, thereby forcing the bottom third of the wave in the same direction (SE!). This is nicely illustrated on the West Conus NH Water Vapor Loop image. The other dynamic is the ult (which contains a very large pool of cold, dry air, is currently sagging South, and at the same time rotating to the SE) and the high pressure ridge. As the winds cascade down the East side of the High pressure ridge into the ult and ultimately having to go somewhere, they are forced forced or pushed out of the trough in a NE direction into B.C. This is effectively illustrated on the AK loop image and NPJ charts. Mid afternoon weather for 2/12-although Cirrostratus are visible in the Eastern and Southern skies, they are gradually yielding to the relentless advance of the lower, thicker Altostratus type. Temperatures are in the upper 40's to low 50's along with minimal air movement. Current conditions for 2/13- except for some partial clearing in the NW, we have a Cirrostratus overcast, no moisture in the last 24, light haze, and little to no air movement. It is from the NNE at 2-3 mph, wind gust: out of the NW to 20 mph, humidity 47%, dew point 25°, current snow level 3000', rising to 4000' later today, temperature 44.1°, and the barometric pressure 29.98" and rising. |
| 2/14/2011 |
5:38 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Although there has been a "blow up" of systems in the PNW, some powerful dynamics are, once again, in operation near the Gulf and elsewhere beginning with yesterday's wave. Its current location is due to the sagging ult ( that contains a very large pool of cold air, is moving East by SE, and is now adjacent to Northern CA) rotating in a pool of dry air into Southern CA, thereby forcing the "wave" East to flow around the "pool" in a SW to almost North direction through Southern CA, Eastern NV, Western ID, NE OR, and Eastern WA {This is nicely illustrated on the West Conus IR and Water Vapor Loop images}. The other dynamics consist of two ult's and a high pressure ridge (that currently extends North of the Aleutians and Bering Sea) with one ult along the Western and Eastern base respectively. In a similar scenario to yesterday, the winds cascade down the East side of the the ridge into the ult, and are thus pushed or forced out the other side toward the NE. There are signs that these two ult's will shift to such an extent that the high pressure ridge will be significantly compressed from both sides. Current conditions for 2/14-it appears as though we have a Stratus- patchy fog to the East and South-Altostratus combination. Because the air movement is almost non existent, the haze is light to moderate. The air flow is from the North at 0 mph, wind gust: out of the NW to 11 mph, humidity 93%, dew point 34° [yesterday, the readings were 47% and 25° respectively], current snow level 4000' temperature 39.7°, and the barometric pressure 29.71" and falling. |
| 2/15/2011 |
5:15 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although there are systems (all of which contain fair to moderate moisture) that appear to be headed in a NE direction into central B.C., most of Alberta, the Northern tier of Saskatchewan, SE and Southern Yukon and NW Territories respectively, the big event is the immense ult with its Southern boundary still remaining adjacent to the Northern CA coast. Looking like a fishhook, the winds, once more cascade down from the apex of a now compressed high ridge into the bowels of the ult, and because they have to go somewhere, are pushed or forced up and out the other side in a SW to NE direction. Thus, this process appears to be causing the large pool of cold, dry air within the ult to rotate. Likewise, it coincides with the SW to NE flow of the NPJ. As the Eastern side of the ult approaches the WA/OR coasts, a small wave (with fair moisture) has inundated Vancouver Island and is just coming onshore in SW B.C. along with another one to the SE that extends into Western OR, all of WA (except for the NW and SE corners respectively) before turning NE. Looking ahead, there are signs that the Western ult (the one affecting our area) is going to be compressed further as the high pressure ridge shifts slightly East, while the Eastern ult will shift NE thereby further squeezing the high pressure ridge. Current conditions for 2/15- we have a Stratus overcast, with fog near the top of Badger Mountain to the East, no moisture during the overnight, and minimal air movement. It was from the NNE at 0-2 mph, wind gust: out of the WSW to 21 mph, humidity 74%, dew point 30° {yesterday, these readings were 93% and 34° respectively; therefore suggesting the initial presence of cold air in the atmosphere}, current snow level 1500' (yesterday, it was 4000'), temperature 40.5°, and the barometric pressure 29.64" and rising. |
| 2/16/2011 |
5:20 AM |
T |
0.0 |
M |
0.0 |
M |
Several dynamic and fascinating events are occurring in or near the Gulf, not the least of which is the ult (affecting our area) as its Southern boundary has sagged further South since yesterday, and is now adjacent to Southern CA with the Southern half moving inland into North central CA (Bay area North) and Western OR, thereby forcing or pushing an existing system slightly East. In addition, there are numerous bits of energy adjacent to the WA, OR and Northern CA coasts, with one of the larger pieces of energy coming onshore in the NW and SW corner of CA and OR respectively. Just off the West coast of Vancouver Island, near the NW "tip", is a small low pressure system that is rotating counterclockwise in a SE direction and appears to be approaching the NW tip of WA. As mentioned above this ult is moving East, but SE? Why? Without getting into detail, there is a much smaller ult (which contains a smaller pool of cold air) moving South by SE into the West side of its counterpart, thereby forcing the Southern portion of the larger ult initially into a SE direction before turning NE with the bits of energy coming onshore as mentioned above {this is beautifully illustrated on both the West Conus and AK IR Loop images}. Mid afternoon weather for 2/15-we have a grey, gloomy Nimbostratus/fog overcast in the form of intermittent sprinkles along with temperatures in the high 30's to low 40's and a light breeze from the NE and NW. Current conditions for 2/16 - partly cloudy skies (with mid and high level clouds), light haze, and little to no air movement. It is however, from the NNW at 5 mph, wind puff: out of the NW to 9 mph, humidity 97%, dew point 30°, current snow level 1000', temperature 32.9°, and the barometric pressure 29.51" and falling. |
| 2/17/2011 |
5:25 AM |
0.00 |
0.0 |
M |
0.0 |
M |
WOW! Is there a lot of action going on or what near the Gulf today! Beginning with the ult adjacent to the West coast ( WA, OR, and Northern CA) some changes are currently underway to the Northern portion, including a small low pressure system along the B.C. West coast just East of the Queen Charlotte Islands. Simultaneously, "something" is plunging South forcing some cold air and a weak system NE across Vancouver Island into SW B.C. The result of this "plunge" is the forcing of the SW perimeter of the ult further South while at the same time pushing a system along its SE boundary into Northern CA. What is the "something" (mentioned above) and why is it plunging South? It would appear to be high velocity winds cascading down the steep East side of a high pressure ridge into the ult. In addition, there seems to be another ult or depression NW of HI and a third ult on the Western flank of the same hpr {high pressure ridge}. This is mentioned because there is an immense wave (with fair to moderate moisture) extending, from near HI, in a SW to NE direction before turning North and terminating South of the middle Aleutians. In summary, there are two ult's with a possible third along with an immense wave and a system immediately North. {This is nicely illustrated on the AK and West Conus Loop images as well as the NPJ wind charts). Current conditions for 2/17- we have partly cloudy skies, light to moderate haze, no precipitation in the last 24, and very little air movement. It is from the SSE at 0 mph, wind puff: out of the South to 7 mph, humidity 83%, dew point 25°, current snow level 500', temperature 31.3°, and the barometric pressure 29.68" and rising. |
| 2/18/2011 |
5:16 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The Internet was temporarily down this morning which accounts for the report being so late. Some interesting events are worth noting this morning. One of them being the closed low pressure system (toward the NE side of the ult pulling in a small pool of cold air) that has shifted South of yesterday's location (between the Queen Charlotte Islands and the B.C. coast) to just off the WA coast and at the same time rotating a weak wave into Western WA and OR respectively. As this is taking place, high velocity winds are, once again, cascading almost straight down the SE side of a high pressure ridge into the ult. This has the effect of compressing the existing moderate pool of cold air within the ult. The next event consists of the immense wave {containing fair to moderate moisture} that yesterday extended from near HI in a SW to NE direction before turning North and terminating South of the Aleutians. Since then, however, some changes have occurred to this wave including a shift East and "expanding" North to just South of the middle Aleutians, the moisture content is noticeably less (although still containing fair to moderate moisture), and the bottom third has been forced East. Current conditions for 2/18-mostly overcast skies, intermittent snow flurries, and very little air movement. It is from the NNE to 0 mph, wind puff: out of the SW to 4 mph, humidity 88%, dew point 27°, current snow level 500', temperature 30.2°, and the barometric pressure 29.85" and rising. |
| 2/20/2011 |
5:33 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The ult of the past several days is in the process of shifting inland, and is sending a series of weak shortwaves across the SW into the mid West the cause of which appears to be a narrow river of high velocity winds extending in an East-West direction before turning SW across NW WA and finally SE, in a nice arc, into the ult and out the other side in a NE flow over the areas mentioned above. As a result, an existing system in the Northern tier states is simultaneously shifting North and expanding East from central MT to MI as there is some some ridging in that area. To the NW, is yet another ult (adjacent to the SW coast of the Yukon) advancing in a South by SE direction along with a moderate pool of cold air and several bits of energy near the B.C. coast. The wave of yesterday now a weak remnant, is being forced to the SE and is simultaneously flowing between a "river" of dry air to its SE (and mentioned above) boundary and the SE side of the ult on its NW perimeter. {This description is better illustrated on the West Conus and AK IR Loop images, color enhanced water vapor images as well as the NPJ wind charts}. Mid afternoon weather for 2/19-other than scattered Cirrus/Cirrostratus from the South to the SE, we have a beautiful azure sky on this winter afternoon with temperatures in the low to mid 40's and light air movement from the NW, NE and occasionally from the East. Current conditions for 2/20 include clear skies, light haze, no precipitation in the last 24, and very little air movement. It is from the NW at 2-3 mph, wind puff is out of the NW to 6 mph, humidity 74%, dew point 17° {two days ago, these readings were 88% and 27° respectively thus indicating the presence of cooler and drier air}, current snow level 2000', temperature 26.2°, and the barometric pressure 29.97" and falling. |
| 2/21/2011 |
5:40 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The direction and flow of the NPJ should be disclosed as it relates or connects to other dynamics that will eventually affect our area weather. First of all, the NPJ is in a split flow with the Northern entity (the main focus for our region) flowing in a SW to NE direction into AK and the Gulf (with an ult immediately behind it!) and the Southern one, in a series of slight depressions and ridging into Northern Baja, CA. North of the Aleutians is a weak wave approaching SW AK, and in a nice symmetrical arc, crosses the Aleutian neck before diving SE along the North central B.C. coast. As a result, it is forcing the existing cold air within the ult and the ult itself in a South by SE direction and giving counterclockwise rotation to what appears to be a low pressure system now adjacent to Southern OR and Northern CA. In addition, there are signs that the ridging and the ult of the Northern entity {mentioned above} will continue to develop and deepen respectively for the next few days (This is all nicely illustrated on the West Conus and AK IR loop images as well as the NPJ wind charts). Mid afternoon weather for 2/20-except for some scattered Cirrus in the West and Cirrostratus in the NW, we have another exceptionally beautiful afternoon, with temperatures in the low to mid 40's and calm winds. Current conditions for 2/21 consist of clear skies except for either Cirrostratus or Altostratus and scattered Cirrus to the South, no precipitation in the last 24, light haze and minimal air movement. It is from the SSE at 0-1 mph, wind puff: out of the NNW to 4 mph, humidity 71%, dew point 17°, current snow level 1000' (yesterday, it was 2000'), temperature 28°, and the barometric pressure 30.03" and falling. |
| 2/23/2011 |
5:10 AM |
T |
0.0 |
M |
0.0 |
M |
Although there is considerable activity in or near the Gulf this morning, the focus will be on just two events which include a relatively large ult moving SW into our region and the high velocity winds. At the present time, they are diving South through the Yukon before turning SW along the B.C. coast into WA. As a result, this combination is forcing a large pool of cold air South by SE as it flows into Western and NW WA and OR respectively. In addition, there are numerous bits of energy and small weak waves within this pool of cold air. Mid afternoon weather for 2/22-with the atmosphere being unstable, it is not uncommon for periodic impulses of energy to pass through the area as was the case a few minutes ago near the NE side of Badger Mountain to the East on this partly to mostly cloudy afternoon and besides some scattered Cumulus and Cirrus, Altocumulus appeared to be the dominant cloud type. Temperatures are in the low to mid 40's along with a light breeze from the South and SW. Current conditions for 2/23-partly to mostly cloudy skies with intermittent snow showers, and very little air movement; although the wind velocity has increased since earlier this morning. It is from the WSW at 3-4 mph, wind gust: out of the NNW to 11 mph, humidity 88%, dew point 24°, current snow level is at the surface, temperature 29.7°, and the barometric pressure 29.72" and rising. |
| 2/25/2011 |
5:18 AM |
0.01 |
0.2 |
0.01 |
2.0 |
0.11 |
Today, the NPJ will be the major player in our areas weather as well as influencing many systems in or near the Gulf. In a SW to NE direction, the NPJ flows across AK, the Yukon and the NW Territories before turning SW across Alberta (except for the SE sector), SW B.C. and NW WA then in a nice symmetrical arc turns SW to NE through Northern CA Eastward. The outcome of this "action" results in at least three factors the first of which is a system moving West to East across Southern AK, the Yukon and Western NW Territories with the Eastern third of it simultaneously shifting SE across the latter two area just mentioned. Since there is no high pressure in this particular area, then over what are these systems cresting? It would appear that the NPJ is responsible for the direction these systems are taking. Another factor is that although the high pressure ridge is not directly over our region (it extends in a NE direction from the NW B.C. coast), we are nevertheless under its influence. The third factor is the ult over our area has shifted SE from yesterday's location, thereby opening the door for colder, dryer Canadian air to "flow" into the PNW. The result of this should be clear or clearing skies. {This is nicely illustrated by the AK IR Loop image and the NPJ wind charts). Current conditions consist of mostly clear skies, light haze, and very little by way of air movement. It is from the WSW at 1 mph, wind puff" out of the North to 7 mph, humidity 74%, dew point 8°, current snow level is at the surface, temperature 17.1°, and the barometric pressure 30.28" and rising |
| 2/26/2011 |
5:06 AM |
0.00 |
0.0 |
M |
M |
M |
A system with its center located SW of the outer Aleutians, a trough, and the configuration of the NPJ account for some phenomenal dynamics in the Gulf this morning. First of all, the center of this system has shifted North from yesterday's location (briefly mentioned above) while simultaneously its main body is moving East by NE. The Eastward movement appears to be caused by the counter clockwise rotation of the center as it attempts to pull in a tributary (and gradually widening) river of cold, dry air from a much larger pool. The trough, yet another piece to the dynamics, has sagged South from Northern CA to just NW of the Southern and Baja, CA border respectively along with a relatively large pool of cold air and several bits of energy adjacent to the LA area. So, it would appear that, with this scenario, the combination as well as movement of the trough and system, a clockwise rotation in the Gulf would result. (This is nicely illustrated- with a parabola shaped "spur" of dry air poised off SW B.C./Vancouver Island, WA and NW OR coasts- on the West Conus NH Loop and the Goes 10 Western US Sector Water Vapor images). Mid afternoon weather for 2/25-on a beautiful winter afternoon, we have scattered Cumulus, temperatures in the low to mid 20's and a light breeze from the NW. Current conditions for 2/26 consist of scattered mid and high level clouds, light haze, no moisture in the last 24, and very little air movement. It is from the ESE at 0 mph, then from the South at 0 mph, wind puff: out of the NW to 8 mph, humidity 74%, dew point 8°, current snow level is at the surface, temperature 16.3°, and the barometric pressure 30.03" and falling.
|
| 2/27/2011 |
5:35 AM |
0.00 |
0.0 |
M |
M |
M |
Yesterday, the trough that was just NW of the Southern and Baja, CA border respectively along with the large pool of cold air and several bits of energy adjacent to the LA area, has sagged farther South and is now adjacent to central Baja, CA. The bits of energy associated with this trough have shifted SE from yesterday's location (the LA area) and appears to have developed into a low pressure system with its center located in the Blythe/Needles area and simultaneously moving East into SW AZ. In addition, the parabola shaped "spur" of dry air off SW Vancouver Island, WA and NW OR, began to turn down the WA, OR coasts before it shifted SE along the entire CA coast to connect with a much larger area of dry air. The cause for this "spur" (mentioned above) to turn SE was due to the slowly sagging ult sliding down the B.C. coast. Within this ult however, and adjacent to the Queen Charlotte Islands, appears to be a low pressure system as counterclockwise rotation was noted. (This is nicely illustrated on the West Conus Water Vapor Loop and West Conus NH Water Vapor Loop, AK IR Loop and the Geostationary Satellite Server Water Vapor images). Current conditions for 2/27 consist of mostly cloudy skies {Cirrus} with scattered Cumulus to the South, no precipitation in the last 24, light haze and very little by way of air movement. It is from the SSE at 0 mph, wind puff: out of the ESE to 6 mph, humidity 68%, dew point 11°, current snow level 1000' {yesterday, it was at the surface}, temperature 21.7°, and the barometric pressure 29.76" and falling. |
| 2/28/2011 |
5:25 AM |
0.08 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 2/27- we have partial clearing from the SW to the SE, snow falling on the higher summits around the valley, an Altostratus overcast in addition to scattered Cumulus in the East, West and South with snow in the offing for later today. Temperatures are in the upper 20's to low 30's and accompanied by a light breeze from the North and NW. Current conditions for 2/28 consist of a thicker Altostratus overcast, light haze and some actual wind velocity. It is from the NNE at 6-9 mph, wind gust: out of the East to 20 mph, humidity 87%, dew point 33° (yesterday, these readings were 68% and 11° respectively), the present snow level is 1000', current snow depth on the WA passes as of 1/31 compared to 2/28: Stevens: then 51", now 96", Blewett: then 30", now 33", Snoqualmie: then 59", now 91", temperature 34.9°, and the barometric pressure 29.49" and falling. Some interesting EOM stats for February- 1) total rain/snow: 0.41" or 43.6% of average, 2) number of days with no precipitation: 17, 3) high BP: 30.78" on 2/01 (and thus from the date just mentioned began a steady, daily decline in BP to a reading of 29.51" on 2/16; or, a 1.22" BP declination during this period of time), 4) low BP: 29.49" on 2/28, 5) date with low BP and no precipitation: 29.64" on 2/15, 6) date with high BP and precipitation: 30.32" on 2/06 (0.01), 7) average BP: 30.08", 8) average morning temperature: 37.7°, 9) high morning temperature: 44.1° on 2/13, and 10) low morning temperature: 16.3° on 2/26. |
| 3/1/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, some changes have occurred to the ult and a system that had the appearance of an upper case "Y". Even though it still appears to be stationary off the B.C. coast, it is nevertheless functional. The numerous weak waves (within the ult and on the NW side of a moderate sized pool of cold air) have dissipated to a great extent, the small low pressure system (located SW of the Queen Charlotte Islands and moving in a NE direction toward SW B.C.) does not have the affect that it did yesterday on the numerous weak waves and the moderate pool of cold air. The left arm of the "Y" has dispersed into two very narrow, weak waves extending in a SE to NW direction toward the outer Aleutians thus creating a small breach on the NW side of the "Y" base that was not there yesterday. The right arm (though fairly impressive looking in appearance, is actually rather weak, compared to yesterday, with widely scattered bits of energy in WA, OR, ID, B.C. and Saskatchewan) has shifted from a relative zonal flow to a SW to NE direction coming on shore in WA and OR before turning abruptly East across the Northern tier states into MN and MI. The base and right arm portion of the "Y" is being forced or pushed in an East by NE direction {and has intensified in the process} by an advancing elongated pool of dry air {This is nicely illustrated on the AK and West Conus IR Loop images as well as the NPJ charts}. Current conditions for 3/01 consist of a Nimbostratus overcast in the form of snow (no accumulation) and very little via air movement. It is however, from the NNW at 3 mph, then from the West at 4 mph, wind puff: out of the NNW to 9 mph, humidity 90%, dew point 29° {on 2/27, the reading was 11°!}, current snow level 1000', temperature 34.9°, and the barometric pressure 30.01" and rising. |
| 3/2/2011 |
5:36 AM |
0.11 |
0.0 |
M |
0.0 |
M |
Some big changes have occurred during the overnight. Yesterday, the advancing elongated pool of dry air (which has since continued its Eastward trek into North central CA)that was responsible for pushing the upper case "Y" base in an East by NE direction, has become part of the ult. This has resulted in the total disintegration of the "Y" base, the right arm of the "Y" (or, a system) coming onshore in WA and OR in a SW to NE direction and the small breach (mentioned yesterday). The ult has really sagged South and is now adjacent to Northern Baja, CA with several bits of energy and weak waves flowing around its Southern boundary into what appears to be the Oxnard, Santa Barbara area in CA. As the ult has commenced shifting East into the PNW (WA, OR, and north central CA), the cold air off the WA/OR coasts cannot follow suit as it encounters a cloud barrier of sorts along the coasts (mentioned above) and therefore is prevented from coming onshore; although simultaneously it "slides" or is forced North along the barrier's perimeter whereby it appears to come under the influence of a low pressure system with its center adjacent to the NW portion of Vancouver Island and moving North toward the Queen Charlotte Islands. Current conditions for 3/02 consist of a low Stratus/fog overcast, light to moderate haze and very little by way of air movement. It is from the ESE at 0 mph, then from the ENE at 1 mph, wind puff: out of the West to 9 mph, humidity 100%, dew point 32°, current snow level 3000' (yesterday, it was 1000'), temperature 35.6°, and the barometric pressure 29.71" and falling.
|
| 3/4/2011 |
5:15 AM |
0.00 |
0.0 |
M |
0.0 |
M |
As the ult is moving North by NE, a few things become very apparent. On the North and NE side of the trough is a system moving in a NW direction and at first glance, looks to have some counter clockwise rotation. Upon closer observation however, nothing is being drawn into the center, and the main body of the system is not influenced in a NW direction either; therefore, something else must be responsible for moving this system in the direction mentioned above and that would be the trough. From its present location, the system extends SE along the B.C. coast (including Vancouver Island), SW WA, through central OR, terminating in NE and NW CA and NV respectively though with a spur extending from Western OR (in a SW direction) out into the Pacific. Because of this system however, there are two resulting factors including the forcing of numerous mini higher level clouds in a Westward direction, and following a breach, a weak low pressure system in the throes of development. In addition, there are two waves flowing around the SE boundary of the ult with the first one looking to come onshore in Northern CA. {This is nicely illustrated on the AK and West Conus IR Loop images as well as the NOAA IR and Water Vapor images} Current conditions for 3/04 consist of an Altostratus overcast {compared to a Cirrostratus one just a few hours ago}, light haze, no precipitation during the overnight, and very little air movement; although, it is from the NNW at 3-7 mph, wind gust: out of the NW to 15 mph, humidity 64%, dew point 19° (yesterday, the readings were 74% and 27° respectively thereby indicating some drying of the atmosphere), current snow level 1500', temperature 31.6°, and the barometric pressure 30.31" and rising. |
| 3/5/2011 |
5:45 AM |
0.08 |
0.0 |
M |
0.0 |
M |
"The cold front that brought snow to our area last night has moved into central ID and SW MT. Dryer air is moving into the area behind the front." Some interesting events have occurred in the Gulf and elsewhere in the past 24. Within the ult is a pear shaped circle with two relatively small low pressure systems that are adjacent to each other and are having a profound influence on the nearby clouds and the leading edge of a wave as they are being drawn/pulled into their respective centers. Immediately SE of these two entities is a behemoth sized pool of dry air extending from the SW to the NE into our area (mentioned above). And, believe it or not, there is a "pineapple express" with its point of origin SW of HI, and extends in a NE direction (along the SE boundary of the immense pool of dry air mentioned above into OR, Northern CA and NV and Western ID. So, it is the dry air that is keeping the "pineapple express" South of WA. Just prior to coming onshore, the "express" appears to be subtly cresting something. This something coincides to the configuration of the NPJ. Current conditions for 3/06 consist of partly cloudy skies {mostly patchy fog}, light haze, and very little air movement. It is from the NNW at 1 mph, wind puff: out of the NW to 6 mph, humidity 89%, dew point 29° {indicating that the atmosphere is relatively moist}, current snow level 2000', temperature 31.3°. and the barometric pressure 30.13" and falling. |
| 3/6/2011 |
5:17 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The "pineapple express" of yesterday, that looked relatively well organized, whose point of origin was SW of HI and extended NE (along the SE boundary of an immense pool of dry air) into Northern CA and NV and Western ID, has weakened considerably since then. It has shifted somewhat SE from yesterday's location, its point of origin still remains SW of HI; though appearing disorganized, and is now coming onshore in Southern CA (near the Oxnard/Santa Barbara area). Part of the weakening process may be due to the express "flowing" between two very large areas of dry air to its SE and NW respectively. This immense pool of dry air to the NW is widest at the Western end; however, becomes more constrictive as it nears the PNW. South of AK, in the Gulf, is a system pulling in clouds associated with it as well as a small pool of cold air. Moving in an East by NE direction, near the outer Aleutians, a much larger system rotating in a counterclockwise motion is effectively pulling in a moderate sized pool of cold air. There are indications that the second system will overtake the first and that most of the energy will be directed well South of our area into Northern CA. Mid afternoon weather for 3/05-we have partly cloudy skies (all Cumulus) on an absolutely beautiful winter afternoon with temperatures in the low to mid 40's and a light breeze from the NE. Conditions for 3/06 consist of partly cloudy skies (Cirrus, Contrails and Cumulus; although earlier it was clear), a light frost on the ground earlier this morning, the haze is light as is the air movement. It is from the NNW at 4 mph, then from the West at 5 mph, wind gust: out of the NW to 11 mph, humidity 79%, dew point 24°, current snow level 2500', temperature 29.8°, and the barometric pressure 30.07" and falling. |
| 3/7/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Today's discussion will revolve around and be related to the ult as it directly effects direction and flow of everything in and near the Gulf as well as elsewhere. As a relatively large system approaches the PNW, a few thing become apparent. As it advances in an East by SE direction, the Northern arm (lying roughly in a NW to SE direction) is simultaneously being stretched and thinned. However, South of the AK mainland (in the Gulf) is a low pressure system moving West toward the inner Aleutians and appears to be cresting something. This is due to some minor ridging South of AK and well off the B.C. coast. So, what is the driving force behind the ult? It appears to be a combination of the advancing dry air and the configuration of the NPJ. Now, as this ult simultaneously moves SE, the elongated pool of dry air SE of it also shifts to the SE, thereby causing what remains of the "express" to shift further SE from yesterday's location (Oxnard, Santa Barbara area) to Northern Baja, CA. Mid afternoon report for 3/06-from clear skies earlier today to a Cirrostratus overcast (including an immense halo, "filtered sunshine" and several Contrails) and scattered lower level Cumulus. Temperatures are in the upper 40's to low 50's along with light air movement from the NE and East. Current conditions for 3/07 consist of scattered Cirrus and Cumulus, no precipitation in the last 24, light haze, and a light breeze. It is from the WSW to 1 mph, wind puff: out of the NNW to 8 mph, humidity 75%, dew point 25°, current snow level 1500' (yesterday, it was 2500'), temperature 34.7°, and the barometric pressure 29.87" and falling.
|
| 3/8/2011 |
5:15 AM |
0.05 |
0.0 |
M |
0.0 |
M |
In a zonal flow from the SW, a very large wave is approaching the OR coast (which is congruous to the NPJ configuration, or flow) while the leading edge of two smaller waves associated with larger one is coming onshore in NW OR. Here's where things get interesting. These two waves along with three more immediately to the NW, are moving in an East by NE direction. As a result, this forces a moderate pool of dry air into SW B.C. and Western WA, and simultaneously pushes two existing system in B.C. toward the NE. Interestingly, it is these two systems which are preventing some arctic air from intruding into our region as they are causing the Western edge of it to shift East. South of the middle Aleutians is a moderate pool of cold air that is moving in a SE direction. This is because there is a small ridge situated between two ult's and this cold air is "sliding" down the SE side of the ridge into a trough (This is nicely illustrated by the West Conus and AK IR Loop images as well as the NPJ wind charts). Current conditions for 3/08 consist of overcast skies with the obscuration of the higher summits and ridges near the valley, and light air movement. It is from the WSW at 4 mph, wind puff: out of the WNW to 9 mph, humidity 98%, dew point 31°. current snow level 2000', temperature 34.7°, and the barometric pressure 29.91" and rising. |
| 3/9/2011 |
5:10 AM |
0.04 |
0.0 |
M |
0.0 |
M |
Although there are three ult's (one to the NE of B.C. and immediately next to a ridge of high pressure with its center appearing to be over Western AK), the focus will be on two of them as well as activity in the Gulf. A ult of interest is located off the West coast with its Southern boundary NE of HI. Off the SW coast of B.C. is a low pressure system with its center adjacent to NW Vancouver Island and initially begins to move NE; however, nearing the Southwestern Queen Charlotte Islands, it turns to a Northerly direction. Immediately to the West and South of the AK mainland is yet another (albeit weak) low pressure system with its center located South of Kodiak Island. South of these two systems is a wave {that not only has some cold air associated with it, but also some counterclockwise rotation develops as it moves NE. Followed by a break (additional cold air), is a much larger wave moving SE thus forcing the moderate pool of cold air in the same direction into the trough and then up the East side of it {including the wave and the system mentioned above} in a NE direction. So, what is the driving force behind this "movement?" Another advancing ult (which is congruous to the NPJ configuration) SW of the outer Aleutians. This is nicely illustrated on the West Conus and AK IR Loop images as well as the NPJ wind charts). Current conditions for 3/09 consist of a grey, gloomy low Stratus overcast with light haze and minimal air movement. It is from the SSE at 1-2 mph, wind puff: out of the NNW to 7 mph, humidity 95%, dew point 33°, current snow level is near 3500', temperature 37.2°, and the barometric pressure 30.13" and rising. |
| 3/10/2011 |
5:37 AM |
0.24 |
0.0 |
M |
0.0 |
M |
The events in the Gulf are very similar to those of yesterday; however, to put things into perspective, this report will commence with the immense wave presently located SW of the Gulf that will eventually affect our area. Within this wave is a tongue-like pool of cold, dry air diving SE thus forcing the leading edge of the wave into the Southern boundary of a trough. With "everything" shifting in an East by NE direction, four things become apparent. The "North" arm of this wave that extends basically from the SE to the NW across the middle Aleutians, appears to have a relative sharp edge to it due to an encounter with a large area of dry air. Because of the "shift" (mentioned above), a system that extends across Vancouver Island in a SW direction with its Southern boundary adjacent to SW OR, is now off the WA coast while simultaneously moving a system lying in a SW to NE direction (from NW CA to SE B.C.) slightly to the East. Now, if the leading edge of the wave (mentioned above) continues its present course, it should come onshore in Northern CA. {This is illustrated on the West Conus and AK IR Loop as well as the West Conus Water Vapor Loop images}. Current conditions for 3/10 consists of an Altostratus overcast (compared to a Nimbostratus one in the form of rain earlier this morning) with partial clearing from the NW to the North, and little to no air movement. It is from the West at 2 mph, then from the WSW at 2-3 mph, wind gust: out of the NW to 12 mph, humidity 96%, dew point 38°, current snow level 3500', temperature 40.8°, and the barometric pressure 29.78" and rising. |
| 3/11/2011 |
6:07 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The system that yesterday was lying in a SW to NE direction (from NW CA to SE B.C.), has since moved well East and is lying in a similar direction only now extends from SW Saskatchewan across Southern Manitoba into Western Ontario before turning South into MN! (This is illustrated on both the NOAA Infrared and Water Vapor images). At the present time, some minor ridging is over our area (a surface high pressure) accounting for the rise in BP during the overnight. However, a trough adjacent to the SW B.C. and WA coasts with a system (the location of which is longitude 47° by latitude 139°-this is approximate!) on the NE side is moving in an East by NE direction and having an affect on the relatively small pool of cold air and the long narrow band of clouds {which are flowing around the SW boundary of the trough} as they have come under the influence of the counterclockwise rotation of the system. In addition, a narrow river of wind is flowing in a SE direction from the middle Aleutians down the East side of another minor ridge into the trough. On the West side of this "ridge" is yet another trough moving in an East by SE direction.(This is nicely illustrated on the NPJ wind charts and the AK and West Conus IR Loop images). Current conditions for 3/11 consists of a thicker Altostratus overcast (the sun is just visible), light haze and minimal air movement. It is from the West at 2 mph, then from the WSW at 4 mph, wind gust: out of the WNW to 11 mph, humidity 65%, dew point 26°(yesterday, these readings were 96% and 38° respectively thus suggesting that the atmosphere has dried out to some extent), current snow level 2000' [yesterday, it was 3500'], temperature 36.9°, and the barometric pressure 30.14" and rising. |
| 3/12/2011 |
5:57 AM |
0.00 |
0.0 |
M |
0.0 |
M |
As an interesting note, the large dome-like ridge of high pressure with its center over Western AK and Eastern Russia, or more precisely the Little and Big Diomedes in the Bering Strait, has not moved or shifted in several days. Closer to our area, there is a trough adjacent to SW B.C., WA and to a lesser degree OR where on the NE side of it (the trough), a low pressure system on the SE side of the Queen Charlotte Islands is moving in a Northerly direction between the "islands" and the central BC coast (or, the Hecate Strait) to just South of AK (Ketchikan). On the East side of the trough is a system that is shifting East {with the commencement much like that of 3/10-lying in a SW to NE direction}; and extends in a Northerly direction from NW CA into Western OR and WA respectively before turning NE into SE BC. Behind this trough is a weak, minor ridge followed by another trough and within it is a moderate pool of cold air moving South by SE with an Eastward push at the last moment thereby forcing the wave to the SE in an Eastward direction; although the entire scenario (except for the hp in AK and the lp South of Ketchikan) is shifting East with a hint to the NE. {this is well illustrated on the West Conus and AK IR Loop images, NOAA infrared and Water Vapor images as well as the NPJ wind charts}. Current conditions for 3/12 consist of a thicker Altostratus overcast (sun is just visible through the clouds), light haze, and almost no air movement. It is, however from the West at 2 mph, wind puff: out of the NW to 8 mph, humidity 77%, dew point 30°, current snow level 2500', temperature 37.8°, and the barometric pressure 30.03" and rising.
|
| 3/13/2011 |
5:38 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yet another trough off the WA, OR and Northwest CA coasts with a system on its NE side moving in an East by NE direction the center of which is equidistant from and adjacent to Vancouver Island and WA. Immediately SW of the "head" next to the system's center, is a relatively long and narrow river of cold, dry air flowing in a SE direction before turning East by NE as it comes under the influence of the counterclockwise rotation; thus, forcing the upper half of the system in a NE direction. Following a brief break, is a long and narrow wave also moving in a SE direction on the SW side of the "river" (mentioned above) with the leading edge appearing to take aim at Southern CA. Just ahead of this "edge", is a small area of dry air that expands (SW to NE) simultaneously as it moves East which in turn forces the bottom portion of the system in an East by
SE direction. This system reaches its apex in NW BC before turning to the SE due to a surface high pressure over the Province just mentioned. The directional movement of the system is congruous to the NPJ configuration (This was all illustrated on the West Conus IR and AK IR Loop images as well as the NPJ wind charts). Current conditions for 3/13 consist of a Nimbostratus overcast in the form of intermittent light rain, and some light air movement. It is from the ESE at 2 mph, then from the East at 2 mph, wind gust: out of the South at 13 mph, humidity 92%, dew point 33° {yesterday, the readings were 77% and 30° respectively}, current snow level 4000' (yesterday, it was 2500'), temperature 38.5°, and the barometric pressure 30.08" and rising. |
| 3/14/2011 |
5:49 AM |
0.12 |
0.0 |
M |
0.0 |
M |
The Southern most activity is flowing on the Northern perimeter of an "ocean" of dry air extending in a "semi-circle from the NW to the NE and flows across HI, Baja, CA, Mexico and beyond. Yesterday's second wave (not mentioned in yesterday's notes) appears to be the key ingredient to the location of today's system and waves as within it are two key factors. As the low pressure system ( first feature and located SW of the outer Aleutians) shifts East before turning NE at the last moment, it in effect, forces the whole gamut of activity in the Gulf (including some dry air in that area) to an East by NE direction including yesterday's system, now but a remnant, moving in a NW direction up the BC coast behind the Queen Charlottes to the Ketchikan, AK area. At the bottom of this second wave are two waves moving NE and simultaneously appear to have merged to form a fair sized wave adjacent to the PNW (including WA, OR and CA). Another low pressure system moving SE, with its center located South of the Gulf, is having a profound affect on a relatively large pool of cold air as the leading edge of it is being pulled into the "center", while the wave to the SE {just mentioned above} remains unaffected for the most part by the "tug". Mid afternoon weather for 3/13-not much change from earlier today as we have a grey, gloomy and dank low Stratus/fog overcast {it stopped raining a short while ago} with temperatures in the upper 30's to low 40's (or about 5-10 degrees cooler than yesterday at this time) and a light breeze from the West and NW. Current conditions for 3/14 consist of partly cloudy skies (all Cumulus except for one cloud!), light haze, and very little air movement. It is from the SSW at 0 mph, then from the NNE at 3 mph, wind puff: out of the ENE at 7 mph, humidity 92%, dew point 34°, current snow level 2500' (yesterday, it was 4000'), temperature 35.7°, and the barometric pressure 29.97" and rising. |
| 3/15/2011 |
5:25 AM |
0.01 |
0.0 |
M |
0.0 |
M |
A few changes have occurred in and near the Gulf of which one is to yesterday's low pressure system and wave immediately to the SE of it. Shortly after commencing a shift to the NE, the wave merged with the system with its center now adjacent to the Queen Charlottes. The main body of the system extends in a SE direction across NW BC before turning South into WA, OR, Northern and NW CA and NV respectively. The next wave, moving in an East by NE direction, is currently on the WA, OR, and NW CA coastlines, and simultaneously expanding to the North, is flowing around the SE boundary of a moderate sized pool of cold air to come onshore in Western WA, OR, and Northern CA, thereby forcing the bottom two thirds of the system to the East and the upper third toward the NE. Why is this wave (mentioned above) expanding North by NE, and what is driving the moderate pool of cold air in a SE by East direction before turning NE at the last moment?It would appear in large part that the NPJ would be responsible as it is congruous to this waves direction (SW to NE), and to a lesser degree, this cold air is flowing around a small pool of dry air before turning NE. Current conditions for 3/15 consist of low and mid level cloudiness, light to moderate haze, along with very little air movement. It is from the WNW at 0 mph, wind gust: out of the East to 17 mph, humidity 89%, dew point 38°, current snow level 3500' {yesterday, it was 2500'}, temperature 43.5°, barometric pressure 29.87" and rising. |
| 3/16/2011 |
5:48 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Although the ult has begun or is in the process of sagging South of our region thereby exposing this area to cooler and showery conditions, behind this ult, there is some ridging developing just to the SW of the outer Aleutians, and indications are that this will develop into a ridge of high pressure for the next several days. A dominant, immense pool of cold, dry air (moving East) extends from just South of mainland AK to NW CA before turning NE into Southern OR which coincides to the NPJ configuration in that area. Beyond the NW boundary of this "immense pool" (mentioned above) is a small low pressure system, with its center located in the Kodiak Island, AK area moving in a NW direction. Barreling down the SW side of the "immense pool" in a SE direction toward the trough's boundary, is a weak wave (which is basically the leading edge of a much larger one to the NW) with what appears to be a trough ahead of it that gives the impression of a trough within the larger counterpart. Followed by a break and to the SW, is a moderate sized wave NW of HI, and if it stays together, looks to come onshore in central CA {This is illustrated on the West Conus IR and AK IR Loop images, the NPJ wind charts, and the GOES NH Composite SECTOR Water Vapor image}. Current conditions for 3/16 consist of an evolvement from partly cloudy skies earlier this morning to an Altostratus overcast except for partial clearing in the NW to the NE. There is some light haze, and minimal air movement. It is from the NNE at 2 mph, then from the West at 0 mph, humidity 77%, dew point 30° (yesterday, the readings were 89% and 38° respectively), current snow level 2000' [yesterday, it was 3500'], temperature 40.8°, and the barometric pressure 29.78" and rising. |
| 3/17/2011 |
5:32 AM |
T |
0.0 |
M |
0.0 |
M |
Some changes are in store for our area over the next few days as a "cool, showery weather pattern is setting up with a cold core upper level trough settling over Eastern WA, keeping the air mass rather unstable. In addition, a persistent low parked off the WA/OR coast will send a myriad of weak impulses into the region". Behind this ult is a developing ridge of high pressure and behind it is another low pressure system moving up the West side of the ridge. With the ult sagging further South since yesterday and its Southern boundary now adjacent to central
Baja, CA, a significant change has effected the upper portion of the wave, that was yesterday NW of HI, (by reducing its size and not appearing as robust in appearance while simultaneously shifting East). The "weak wave" that yesterday, was barelling down the SW side of an immense pool of cold, dry air has developed into a low pressure, moving in an Easterly direction, with a hint to the SE and adjacent to the WA/OR coasts. Not only is this affecting the moderate sized pool of cold air being pulled in, but also a narrow band of "clouds" from an immense system approaching Western AK with its center {located SW and SE of the Klyuchi Peninsula [Russia] and Japan respectively} pulling in a moderate and wide tributary of cold air. Mid afternoon weather for 3/16-this afternoon, we have a mixture of scattered Cirrus, Cirrostratus and lower level Cumulus with some partial clearing in the West, North and East. There is light air movement from the SW, and the temperatures are in the low to mid 50's. Current conditions for 3/17 consist of scattered Cumulus, as well as mid and high level clouds under mostly clear skies. There is light to moderate haze and minimal air movement. It is however, from the SSW at 1 mph, then from the South at 0 mph, wind gust: out of the NW to 11 mph, humidity 82%, dew point 27°, current snow level 2500', temperature 34.5°, and the barometric pressure 30.07". |
| 3/19/2011 |
5:15 AM |
0.74 |
0.0 |
M |
0.0 |
M |
Although the Southern perimeter of the ult still flows over Northern, central and Southern Baja, CA, the principal boundary circulates over North central to Southern CA. Within this ult, is a stationary closed low with its center adjacent to the NW OR coast. As an interesting note, a system that has moved inland (extending from South central BC into NE WA, all of ID, except for the NE corner and along the NV/UT border) is attempting to conform to the influence of the counterclockwise rotation of the closed low while simultaneously shifting slowly to the East. The large wave (with the majority of it out in the Pacific} with some of it coming onshore from North central to Southern CA, arrived here by "sliding" SE under the SW side of the closed low from its former location (South of the inner Aleutians) and in the process appeared to enhance the low's counterclockwise rotation. Behind this ult is a surface high pressure ridge with its apex extending from SW AK to just past the middle Aleutians and two waves attempting to crest it. If they succeed, they will plunge down the steep East side of the ridge into the bowels of the trough and most likely come onshore in North central to Southern CA. Current conditions for 3/19 consist of scattered high level and lower level Cumulus under mostly clear skies. What a contrast to the lower valley with new snow on the higher ridges and summits! However, there is light haze, and minimal air movement. It is from the NNW at 4 mph, wind gust: out of the NW to 10 mph, , humidity 98%, dew point 33°, current snow level 2000' (yesterday, it was 3000'), temperature 36.7°, and the barometric pressure 29.66" and falling. |
| 3/20/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The principal boundary of the ult is still circulating over North central to Southern CA although the isobars appear to be tighter than in the past few days. Some interesting features have occurred in and around the ult since yesterday. The stationary closed low with its center adjacent to the NW OR coast has since shifted South and is now adjacent to the Northern half of CA and in particular the Bay area. Immediately to the NE is what appears to be system lying in a steep SW to NE "plane"; however, on closer observation, there is no counterclockwise rotation, in fact, at the last moment there is some rotation-clockwise! In addition, this "disturbance" is not shifting East but rather is moving in a steep, steady SW to NE direction around the SE side of the ult from off the coast of Southern CA, then extending NE across North central CA (Lake Tahoe area) into NW NV before "expanding" into SW to NE WA, SW MT, and all of ID except the Northern panhandle and the SE portion near the ID/WY border. This corresponds and is congruous to the NPJ which is in a steep SW to NE flow (This is nicely illustrated on the West Conus IR and AK IR Loop images and the NPJ wind charts). Mid afternoon weather for 3/19-scattered Cirrus, Cirrostratus, and Cumulus grace our skies on a beautiful afternoon indeed with temperatures in the low to mid 50's along with a light breeze from the NW and occasionally from the East. Current conditions for 3/20 consist of overcast skies, light haze, no precipitation in the last 24, and minimal air movement. It is from the WNW at 2 mph, then from the West at 3 mph, wind gust: out of the NW to 10 mph, humidity 81%, dew point 30°, current snow level 2500', temperature 35.1°, barometric pressure 29.88" and falling. |
| 3/21/2011 |
5:16 AM |
0.36 |
0.0 |
M |
0.0 |
M |
Although the principal boundary of the ult is still circulating over North central to Southern CA, the isobars appear to have tightened since yesterday. A few changes have occurred in or near the trough over the last 24 hours. The closed low that was adjacent to the Northern half of CA and in particular the Bay area, has begun to shift inland and covering an area from just South of the Bay area to San Diego, CA. Immediately to the NE is what looks to be a "system" (with its point of origin in the Lake Tahoe area) extending North through Eastern OR and WA before turning NE into the ID panhandle. So, what is driving this system Northward? It looks to be the NPJ, being congruous to this direction as it is in a North/South flow over the areas just mentioned. As far as the NE direction is concerned, these "systems" are riding up the steep West side and cresting a surface high pressure just to our East, before turning East with a hint to the SE. Just East of this "system" is another one trying to conform to the Northern trek of its counterpart; however, the Southern two thirds are encountering some difficulty as they are being forced East by NE by the closed low shifting inland. {This is nicely illustrated on the West Conus IR Loop image and the NPJ wind charts}. Mid afternoon weather for 3/20-from generally overcast skies to a gloomy, grey, and low Nimbostratus overcast in the form of light rain with snow on the higher ridges and summits near the valley. Temperatures are in the low to mid 40's along with the slightest of air movement. Current conditions for 3/21 consist of mostly cloudy skies with patchy fog, and minimal air movement. It is from the East at 0-1 mph, wind puff: out of the WNW to 9 mph, humidity 96%, dew point 37°, current snow level 3000', temperature 41°, barometric pressure 29.57" and falling.
|
| 3/22/2011 |
5:54 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although not much activity is happening in the Gulf today, some changes have occurred to the ult. Probably the most obvious being that it no longer retains a nice parabolic appearance with tight isobars (like yesterday), but rather an elongated "U" shaped zonal flow from off the Pacific into North central to Southern CA and even Northern Baja, CA before extending in a SW to NE flow up the West side of a surface high pressure East of our region over Western ND, MN, WS and MI. In addition, there is no North/South flow through Eastern OR and WA. Even though there appears to be two low pressure system's near the SW coast of AK, closer observation reveals just one with its center located over Nunivak Island near AK, and exerting considerable influence on the nearby "clouds" and a small pool of dry air as they are in the process of conforming to the counterclockwise rotation. Looking ahead, there are subtle signs that the NPJ will begin to shift North from its present location {North central and Southern CA} and by early next week, should be in a zonal flow over OR and Southern WA. Mid afternoon weather for 3/21-we have scattered Cirrus and Cirrostratus, with partial clearing in the West, though the dominant cloud type by far is the lower level Cumulus. Temperatures are in the low to mid 50's and minimal air movement is from the NW. Current conditions for 3/22 consist of mostly clear skies, light haze, and minimal air movement; although it has picked up somewhat in the last few minutes. It is from the WNW at 7 mph, wind gust: out of the WNW to 17 mph, humidity 55%, dew point 24° (yesterday, the readings were 96% and 37° respectively), current snow level 2000' [yesterday, it was 3000'], temperature 41°, and the barometric pressure 29.84". |
| 3/23/2011 |
5:44 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, the ult, now off the CA coast, has reverted from an elongated "U" shaped zonal flow to one that more or less resembles a parabolic appearance; however, continues to flow over North central to Southern CA; and has sagged further South from Northern to Central and Southern Baja, CA. Within this trough is a low pressure system with its center adjacent to Northern CA (specifically the Fortuna/Ferndale area). The counterclockwise rotation is affecting the nearby "clouds" and a small pool of cold air as both are being pulled in toward the center. Followed by a short break, is a wave moving in a steep SE direction from the Gulf and as it does, compresses the SW side of the trough thereby appearing to force the "body" of the system (mentioned above) to the NE. This wave also looks as though it has come under the influence of the counterclockwise movement of the nearby system (dmentioned above). Is it or not? There is a surface high pressure over the Aleutians with a portion of a wave, along with "winds", sliding down the East side of the ridge in a SE direction. Therefore, it would appear that this wave was forced or pushed far enough SE to actually come under the counterclockwise influence of the low pressure system. Current conditions for 3/23 consist of an influx of Cirrus, and Cirrostratus {with Contrails!} even though from the NW to the NE mostly clear skies prevail. There is a light haze, no precipitation in the last 24, and minimal air movement. It is from the WNW at 3-5 mph, wind gust: out of the NNW to 12 mph, humidity 74% (yesterday, the reading was 55%), dew point 25°, current snow level 3500' {yesterday, it was 2000'}, temperature 34.2°, and the barometric pressure 30.02" and rising. |
| 3/24/2011 |
5:38 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Some very interesting developments have occurred in or near the Gulf and elsewhere since yesterday. One being a low pressure system moving NW toward SW AK with its center located near Kodiak Island. To the SE, was a developing low pressure system just West of latitude 140 and South of longitude 50, and this is the one of interest. It has since shifted SE from the above location to just off the OR/CA coasts at their respective borders and in the process forced yesterday's system inland and to the NE. So, for the time being anyway, systems coming into our area will be from the South as the NPJ flow is congruous to the direction of the systems (South to North). Although the counterclockwise rotation is having a significant affect on a small pool of cold air and dry air to the NW, there is a thin band of clouds connecting the SE portion of the next wave to the SW portion of the low pressure system (mentioned above) and making it appear as though the "system" is pulling in the wave. Is it? There is a narrow band of wind, extending from the NW (Kenai Peninsula, AK) to the SE, down the East side of a ridge into the trough and ending in an oval loop. It would appear therefore, that the combination of this wind, and the influence of the counterclockwise rotation would actually contribute to the wave being drawn toward the system {This is nicely illustrated by the West Conus IR and AK IR Loop images as well as the NPJ wind charts}. Current conditions for 3/24 consist of overcast skies with intermittent rain showers and generally light air movement. It is from the East at 4 mph, then from the NNE at 2 mph, wind gust: out of the East to 15 mph, humidity 54%, dew point 30° [yesterday, the readings were 74% and 25° respectively], current snow level 3500', temperature 48.4°, and the barometric pressure 29.58" and falling. |
| 3/26/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Interesting action is taking place in the Gulf and elsewhere including our area where a small (but yet at the present time stationary) low pressure system is in the early stages of development near WA with some counterclockwise rotation. In addition, the small pool of cold air just beginning to come onshore in OR and NW CA does not come under its (the system's) influence until the last moment when a small portion of it turns NW. Followed by a break is a wave moving East by SE and within it is a relatively large low pressure system, also moving
East by SE, with its center located South of Kodiak Island, AK. Its counterclockwise rotation is having a significant affect in not only pulling in clouds associated with it and the dry air, but also on a small wave moving around its Southern boundary. Here's where things get interesting, as the NPJ is South of our region in central OR, then in a NW flow from NW to Southern CA. This would explain why the low pressure system adjacent to WA (mentioned above) is "stationary" because there is no upper winds to push it and why the pool of cold air is moving East into OR and NW CA (This is nicely illustrated on the Conus IR and AK IR Loop images as well as the NPJ wind charts). Current conditions for 3/26 consists of a Nimbostratus overcast in the form of a steady light rain and very little air movement. It is from the NNE at 0-1 mph, wind puff: out of the East to 8 mph, humidity 84%, dew point 34° [yesterday, the readings were 94% and 40° respectively], current snow level 2500', temperature 40.8°, and the barometric pressure 29.72" and falling. |
| 3/27/2011 |
5:34 AM |
0.28 |
0.0 |
M |
0.0 |
M |
What appears to be a low pressure system adjacent to the WA/OR border, looks to be nothing more than a moderate pool of cold air because the clouds and cold air associated with it are not being affected toward the center. However, the cold air along with the lower half of a system is coming onshore in OR in an
East by NE direction, while the upper half moves NE into WA. So, what is causing the pool of dry air to turn East into OR? It could be a combination of wind and a low pressure system. How? Just West of the trough is a surface high pressure adjacent to the Queen Charlotte Islands and located South of the Yukon/Southern AK mainland. Sliding down the entire East side of this ridge into the trough from a NW to SE direction are "winds" pushing or forcing the pool of cold air in an Easterly direction. The other part of the combination is a low pressure system located
South of the inner Aleutians riding up the West side of the surface high pressure with its counterclockwise rotation clearly visible as it too moves in an Easterly direction and at the same time appears to have an additional affect on the Eastward movement of the moderate pool of cold air (mentioned above). (Illustrated on the West Conus IR and AK IR Loop images as well as the NPJ wind charts). Mid afternoon weather for 3/26-we have a grey, gloomy Nimbostratus overcast in the form of a light mist/drizzle, temperatures in the mid to upper 40's along with a light breeze from the NE and East. Conditions for 3/27 consists of mostly overcast skies with some partial clearing in the NW, NE and East. There is also light to moderate haze and very little air movement. It is however, from the WNW at 2 mph, then from the WSW at 2 mph, wind puff: out of the NW to 5 mph, humidity 91%, dew point 37°, current snow level 2500', temperature 40.5°, and the barometric pressure 29.66" and falling. |
| 3/28/2011 |
5:57 AM |
T |
0.0 |
M |
0.0 |
M |
The combination of dry air along the entire BC and PNW coasts along with high pressure aloft and at the surface over our area, has resulted in a very nice day and relief from the "spring storm parade" though this respite will be brief as "valley rain and mountain snow will return late tonight". In the meantime, there is a wave adjacent to the BC, WA and OR coasts moving North by NE. At the present time, it looks as though the head of this wave will come onshore in Southern AK (near the Kenai Peninsula area), while the central portion moves NE toward BC and the tail swings NE across Vancouver Island. Immediately to the SE, is a small wave approaching the WA/OR coasts followed by another one right behind it. Will these waves affect our nice weather today? No. Why not? Because the NPJ flow is congruous to the first wave's (mentioned above) direction-North by NE. As for the waves approaching the WA/OR coasts, SW WA will be brushed as they slide down the East side of the surface high pressure in somewhat of a diagonal across central OR into NE NV. In short, the Southern portion of the first wave will move over the top of WA, while the other two systems will be well South of our area. Mid afternoon weather for 3/27-it would appear that we have an Altostratus overcast with scattered lower level Cumulus as it has begun to sprinkle. Temperatures are in the low to mid 50's along with a nice breeze mainly from the East though occasionally from the SE. Current conditions for 3/28 consists of mostly clear skies with some scattered clouds in the NW and South, some actual wind velocity and light haze. The winds are from the WNW to 9 mph, wind gust: out of the NNW to 15 mph, humidity 79%, dew point 33°, current snow level 3000', temperature 38.7°, and the barometric pressure 29.96" and rising. |
| 3/29/2011 |
5:37 AM |
T |
0.0 |
M |
0.0 |
M |
Moving North by NE, yesterday's wave basically lying in a NW to SE "plane" and adjacent to the BC, WA, OR coasts, has been pushed ENE of our region into Western MT and Alberta as well as SE BC by an approaching and lengthy wave from the SW. Just as it comes onshore in SW BC between the Queen Charlotte's and Vancouver Island, it simultaneously appears to turn SE into WA, OR and beyond. As an interesting sidelight, the upper level winds over WA are in the 110-150+ knot range this morning. Immediately North is an elongated pool of cold air this wave is flowing around. So, what is driving the wave and pool of cold air? It would appear that the direction the wave is moving, the elongated pool of cold air it is flowing around and the turning to the SE, are congruous to the NPJ flow {SW to NE before turning SE}. This is nicely illustrated by the West Conus IR and AK IR Loop images as well as the NPJ wind charts. Mid afternoon weather for 3/28-scattered Cirrus, Cirrostratus and lower level Cumulus grace our skies on just a beautiful spring afternoon. Temperatures are in the upper 50's to low 60's along with a nice breeze from the SW to the North. Current conditions for 3/29 consist of overcast skies except for some partial clearing to the NW, light haze, and some air movement. It is from the NNW at 4-5 mph, wind gust: out of the NNE to 12 mph, humidity 79%, dew point 35°, current snow level 3000', temperature 45.9°, and the barometric pressure 29.98" and rising.
|
| 3/31/2011 |
5:53 AM |
T |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 3/31-by way of contrast to earlier today when the skies were mostly overcast, we have another beautiful spring afternoon with a variety of cloud types including scattered Cirrus, Cirrostratus, what appeared to be some Altostratus near the Western horizon, a small area of Altocumulus, an Altocumulus Lenticularis cloud to the South, and scattered lower level Cumulus. Temperatures are in the upper 50's to low 60's along with a nice breeze from the North and NW. Current conditions for 3/31 consist of partly cloudy skies (scattered low and high level clouds) from a North/South line Eastward; however, from that same line West, mostly cloudy with high level clouds in addition to moderate wind velocity. It is from the WNW at 8-13 mph, wind gust: out of the NW to 27 mph, humidity 72%, dew point 42°, the present snow level 6500', current snow depth on the WA passes as of 2/28 compared to 3/31-Stevens: then 113", now 116", Blewett: then 35", now 37", Snoqualmie: then 93", now 84". Temperature 54.1°, and the barometric pressure 29.89" and rising. Some interesting EOM stats for March include 1) total rain: 2.14" or 334.4% of average, 2) number of days with no precipitation: 14, 3) high BP: 30.31" on 3/04, 4) low BP: 29.54" on 3/25, 5) date with low BP and no precipitation: 29.58" on 3/24, 6) date with high BP and precipitation: 30.13" on 3/09 (0.04), 7) average BP: 29.91", 8) average morning temperature 38.6°, 8a)actual average morning temperature: 44.4°, 9) high morning temperature: 54.1° on 3/31, and 10) low morning temperature: 29.8° on 3/06. |
| 4/1/2011 |
5:29 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, the ridge of high pressure, currently over our area, has shifted East somewhat and appears to be strengthening or building, because yesterday's wave was coming onshore in Western WA whereas today, Vancouver Island and SW BC are the recipients of the long, narrow wave (now but a remnant of its former counterpart). In addition, this wave is flowing around the SE side of a large pool of dry air-immediately to the NW-and simultaneously up the West side of the high pressure ridge (mentioned above) thus accounting for the "long and narrow" body. Behind the "dry air" is a large wave South of the middle Aleutians that extends SW for an incredible distance before terminating in what appears to be a weather disturbance near Talihud island of the Phillipines (This is illustrated on Google earth, West Conus IR Loop image and the NPJ wind charts). Current conditions for 4/01- consists of an Altostratus overcast with scattered lower level Cumulus, light haze, no precipitation in the past 24, and minimal air movement. It is from the West at 4 mph, then from the SSW at 3 mph, wind gust: out of the North to 11 mph {this is quite a contrast to yesterday when the readings were 8-13 mph from the WNW and 27 mph from the NW respectively}, humidity 75%, dew point 35°, current snow level 4000' [yesterday, it was 6500'], temperature 44.4°, and the barometric pressure 30.14" and rising. |
| 4/2/2011 |
5:39 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Some significant changes have occurred to yesterday's wave, the large pool of cold, dry air and other weather events that will not be mentioned in today's report. First of all however, the ridge of high pressure, currently over the PNW, has shifted slightly East and the pleasant weather this area is enjoying appears to be temporary as there is a developing trough off the West coast that includes WA, OR, and Northern CA. At the same time yesterday's wave (located South of the Aleutians) was moving East by NE, a low pressure system was in the process of developing {on the NW side of the wave} when at the last moment the "head" of the now lengthy wave begins to turn SE as it advances to the Western side of the large pool of dry air. This is because the SE direction is congruous to the NPJ flow at this point. This in turn forces the "dry air" (just mentioned) in an East by SE direction into WA, most of OR and NW CA thereby revealing bands of precipitation in SW BC [the higher elevations of the Whistler/Hope area], the Cascades of WA {probably in the form of snow because of the lower snow levels}, and the OR Cascades. (This is nicely illustrated by the West Conus IR and AK IR Loop images, West Conus NH IR Loop image and the NPJ wind charts). Mid afternoon weather for 4/01-mostly cloudy skies except for some partial clearing in the East and SE. Temperatures are in the low to mid 50's (which is about 8 to 10 degrees cooler than yesterday at this time) along with a nice breeze from the NW. Current conditions for 4/02 consists of partly cloudy skies (all Cumulus), and some actual air movement. It is from the WNW at 9-11 mph, wind gust: out of the NW to 22 mph, humidity 50%, dew point 27° (this is in sharp contrast to yesterday's readings as they were 75% and 35° respectively), current snow level 2500', temperature 48.2°, and the barometric pressure 29.64" and falling {as of earlier this morning}. |
| 4/3/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 4/02-though the skies are partly cloudy (all Cumulus except for some Cirrus/Cirrostratus in the East), the air over our area was unstable enough to foster scattered showers of short duration over the more mountainous areas around the valley. Temperatures are in the mid to upper 50's along with a nice breeze mainly from the NW and NE though occasionally from the SE. Conditions for 4/03 consists of partly cloudy skies (all in the East and NE), no precipitation during the overnight, and minimal air movement. It is from the West at 2 mph, then from the South at 4 mph, wind gust: out of the NW to 11 mph (this is in stark contrast to yesterday's readings as they were 9-11 mph from the WNW and 22 mph from the NW respectively), humidity 56%, dew point 26°, current snow level 2500', temperature 40.5°, and the barometric pressure 30.14" and rising {yesterday, the reading was 29.64", an increase of 0.50" since then}. |
| 4/4/2011 |
5:42 AM |
0.00 |
0.0 |
M |
M |
M |
Some significant changes have occurred to yesterday's wave and the low pressure system. Although the surface high pressure is still over our area, there are indications that it will flatten thereby weakening its "blocking" effect and opening the door for future storms to come into the area. Now the combination of high pressure and the NPJ (currently in a SW to NE flow) will prevent this immense and what appears to be a nasty low pressure system, (currently moving slowly in an East by NE direction across the Gulf with its center located South of the Yukon/AK border) from coming onshore in WA. Its counterclockwise rotation is having a profound effect on the clouds associated with it and even on a narrow river of upper level winds flowing across the inner Aleutians into a trough and up the West side of the surface high pressure into the center of the low pressure and on directing a moderate rectangular shaped pool of cold air into central BC {from the Ketchikan, AK area to the NW tip of Vancouver Island} WOW! As far as the wave is concerned, it is similar to a "pineapple express" as its point of origin is SW of HI (and simultaneously shifting SE), then gradually turns NE across the ocean to come onshore in Southern BC [which includes most of Vancouver Island], SW Alberta, WA, and OR before turning SE into ID and NW MT; therefore, at this point, conforming to the NPJ flow over these areas-NW to SE (This is nicely illustrated by the NPJ charts, AK IR Loop image and the GOES West IR imagery Loop). Current conditions for 4/04 consists of a "thicker" Altostratus overcast, no precipitation in the past 24, light haze, and very light air movement. It is from the WNW at 0 mph, then from the NNE at 0 mph, wind gust: out of the NW to 13 mph, humidity 61%, dew point 29°, current snow level 2500', and the barometric pressure 30.09" and rising. |
| 4/5/2011 |
5:47 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A few interesting events have taken place in and near the Gulf as well as in our area including a fast moving front and its effect on other waves. Since yesterday's surface high pressure has shifted East of our region and there is no protective ridge over our region, what is giving us this nice weather? More on that later. The front (mentioned above) is moving quickly in an East by SE direction (from Southern AK and the Aleutians) and in the process forced yesterday's wave (adjacent to the Yukon and NW BC) along with a small pool of cold air into South central BC and across the Southern half of the Queen Charlottes into central BC respectively. Because of its Eastward movement, the leading edge of this front is now over Vancouver Island, while the SE movement is simultaneously forcing a large rectangular shaped pool of cold air to the SE, which in turn forces a mere remnant of yesterday's similarity to a "pineapple express" to the SE of WA. So, it would appear that this "SE" action is giving us nice weather while inclement weather is occurring in the Cascades of WA, OR, and the Siskiyou's of Northern CA {This is nicely illustrated on the West Conus IR and AK IR Loop images, GOES West IR Loop imagery, West Conus NH IR Loop image and the NPJ charts}. Current conditions for 4/05 consists of scattered Cirrus and Cumulus clouds, light haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 11 mph, then from the SSW at 4 mph, wind gust: out of the North to 25 mph, (yesterday, the readings were 0 mph from both the WNW and NNE and 13 mph from the NW respectively), humidity 48% (yesterday, it was 61%), dew point 25°, current snow level 1500', temperature 45.3°, and the barometric pressure 29.84" and falling. |
| 4/6/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Very interesting events are happening near the Gulf and in our area this morning. Although there is minor flat ridging just East of our area, and a slight "depression" adjacent to WA, there are indications that this depression will develop into a trough. However, the main events are a large pool of cold air, and a ridge of high pressure now over the Aleutians. A moderate pool of cold air, moving East by SE down the central BC coast, is coming onshore between the Charlottes and Vancouver Island, Vancouver Island itself, and the coasts of WA and OR. In addition, "clouds" (moving quickly East) are flowing in a steep NW to SE direction around this pool of cold air into OR. What is the driving force behind these actions? First of all, the upper level winds are flowing down the East side of the high pressure ridge(mentioned above) into WA and OR thus explaining why the cold air is "directed" onto the West coast of WA and the "clouds" into OR as this is congruous to the NPJ flow. Therefore, it would appear that a combination of the upper level winds and NPJ are the driving force behind these actions. Mid afternoon weather for 4/05-in an East/West line, the skies were partly cloudy (Cumulus) South of it from the SW to the SE while to the North they were overcast. Temperatures are in the mid 50's to low 60's along with a nice breeze from the SW. Current conditions for 4/06 consist of partly cloudy skies, light haze, no precipitation during the overnight and some air movement. It is from the NNE at 11 mph, then from the NW at 0 mph, humidity 77%, dew point 31°, current snow level 1000', temperature 37.4°, and the barometric pressure 29.82" and falling.
|
| 4/8/2011 |
5:03 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Some very dynamic activity is occurring near the Gulf as well as in our area. It would appear that one of the keys affecting the weather in the Gulf, is a large low pressure system moving East and approaching the SW coast of AK with its center located just South of Nunivak Island, AK. Its counterclockwise rotation is having a profound affect not only on the clouds associated with it, but also on an immense pool of cold air flowing SE over the outer Aleutians before turning NE to move parallel with them toward the Gulf. With this immense pool of cold air attempting to conform to the counterclockwise rotation, it is forcing a moderate pool of dry air (extending from the Gulf across NW BC into the Yukon) along with an elongated wave [immediately to the SE] in an East by SE direction. However, as large as this low pressure is, it looks as though, for the time being, that the high pressure ridge currently over the Yukon and Eastern AK, will impede its Eastward movement before fizzling some time tomorrow. Now between the large low pressure system (mentioned above) and a trough {that has really sagged South from Western WA and NW OR two days ago to Southern CA) is a small ridge of high pressure, and even though it is not directly over the PNW, it is close enough to be influential. Current conditions for 4/08 consist of mostly clear skies, light to moderate haze, a light frost was on the ground earlier this morning, and some air movement. It is from the WNW at 2 mph, wind puff: out of the NNW to 9 mph, humidity 90%, dew point 31°, (yesterday, the readings were 60% and 22° respectively), current snow level 5000' {yesterday, it was 1500'!}, temperature 37.8°, and the barometric pressure 30.02" and rising. |
| 4/9/2011 |
5:53 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The immense low pressure that yesterday was approaching the SW coast of AK with it center just South of Nunivak Island, AK, has indeed fizzled though there are clouds associated with yet another low pressure system moving in an Easterly direction and approaching SW AK and as it does so, appears to force the Southern portion of this immense pool of cold air slightly to the SE with the rest of it moving parallel to the Aleutians in a NE direction. Since this "immense pool of cold air" is no longer influenced by counterclockwise rotation, what is affecting its direction into NW BC? First of all, upper level winds are flowing down the East side of a surface high pressure over the outer Aleutians into a minor depression before turning abruptly NE into NW BC. Second, the NPJ is also congruous to the flow (SW to NE). Therefore, it would appear that a combination of upper level winds and the NPJ flow, are influential in its direction into NW BC. Flowing along the SE boundary of the "cold air" (mentioned above) and over a surface high pressure adjacent to the OR/CA coasts is a wave in a familiar SW to NE direction, with most of it going into BC, and the rest approaching the WA/OR coasts before attempting to turn SE into a deep trough that has sagged further South and with tighter isobars now over Northern to central Baja, CA. Current conditions for 4/09-scattered Cirrus/Cirrostratus, no precipitation during the overnight, light haze, and minimal air movement although it has picked up in the last few minutes. It is from the West at 2 mph, then from the WNW at 1 mph, wind gust: out of the NW to 13 mph, humidity 44 %, dew point 25° (yesterday, these readings were 90% and 31° respectively), current snow level 3000' [yesterday, it was 5000'], temperature 43.9°, and the barometric pressure 29.82" and rising. |
| 4/10/2011 |
5:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The front half of yesterday's wave and a minor depression on the posterior end of it (both of which were located South of the Aleutians) culminated in some interesting results. The minor depression shifted slightly NE before moving East by SE and simultaneously developed into a trough. In the process, it not only forced yesterday's moderate pool of cold air from basically a West to NE "plane" into a North/South direction (from well offshore of the Bay area to NW BC), but also the Northern half of the wave in a NE direction into South central BC between the Queen Charlottes and Vancouver Island and the Southern portion in an East by SE direction. There is a weak surface high pressure just off the PNW coasts with its apex over SW WA followed by a trowel-like trough near the Gulf and as a result, the wave (mentioned above) is moving up the West side of it into South central BC. This is also congruous to the NPJ flow {SW to NE}. Mid afternoon weather for 4/09-in addition to the Cirrus/Cirrostratus that were observed earlier today, some Altostratus, lower level Altocumulus and scattered Cumulus were permeating the Western skies. Temperatures were in the low to mid 50's along with a nice breeze mainly from the West, North to NE, but occasionally from the SE. Current conditions for 4/09-an Altostratus overcast with scattered lower level Cumulus, light haze, no moisture during the overnight, and minimal air movement. It is from the WNW at 0 mph, wind puff: out of the NW to 9 mph, humidity 52%, dew point 31° (yesterday, the readings were 44% and 25° respectively), current snow level 3500', temperature 49.8°, and the barometric pressure 29.94" and falling. |
| 4/11/2011 |
5:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although with nothing major taking place in the Gulf this morning, there is a ridge of high pressure East of our region over Alberta, Saskatchewan and MT followed by a minor trough along the central BC and PNW coasts. However, the big event was yesterday's wave (that extended South from South central BC before turning SW over the ocean) in addition to the "immense pool of cold air" and its continuing East by SE advancement which forced the wave {now but a faint remnant} into a steep SW to NE direction from being adjacent to Southern Baja, CA to across NW CA, Eastern OR and SE WA while the "pool of cold air" is now along the central BC and PNW coasts and commencing to come onshore in the areas just mentioned. NW of the "cold air" is a "system" moving in a NE direction toward the Queen Charlottes and the AK portion of NW BC. Within it is a small low pressure system with the center South of Southern AK and having only some affect on the clouds immediately associated with it. So, why is this system moving NE and the cold air coming onshore in the areas mentioned above? Because the NPJ is congruous to their directions. Mid afternoon weather for 4/10-not much change from earlier today when we had an Altostratus overcast and scattered lower level Cumulus with light snowfall on or near the upper slopes of Mission Ridge to the SW. Temperatures are in the upper 50's to low 60's in addition to minimal air movement. Current conditions for 4/11-partly cloudy skies (all Cumulus), no precipitation in the last 24, light haze, and minimal air movement although the velocities have picked up. It is from the West at 4 mph, wind gust: out of the SW to 14 mph, humidity 59%, dew point 34°, current snow level 3000' lowering to 1500' later today, temperature 49.6°, and the barometric pressure 29.96" and rising. |
| 4/13/2011 |
5:29 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The high pressure that was over BC shifted slightly East to the BC/Alberta border and extends NW into the Yukon and NW Territories. However, it is being "squeezed" or "compressed" on the NE side by a large ult in the vicinity (the SW side is pushing into NE and Northern Saskatchewan and Manitoba respectively) and by a trough on the West side. It is this through that will be the object of attention as there is some interesting action taking place within it. A moderate pool of dry air, in the Gulf, is circulating but not advancing in any direction. Immediately to the South are two distinct pools of cold air and small low pressure depressions within them, both of which are moving in an Easterly direction. Ahead of these "pools" is an immense pool of cold air {also moving East!} adjacent to the PNW [WA, OR, and CA] while simultaneously extending NW into South central BC (between the Queen Charlottes and Vancouver Island) and NW CA. As a result, the clouds in OR/WA are shifting somewhat NE, but mainly streaming North before turning NW in BC. All of this action is brought about by two major "engines"-the upper level winds and the NPJ flow or their lack. Mid afternoon weather for 4/12-a Cirrostratus overcast (that includes an immense halo and several Contrails) and scattered lower level Cumulus. Temperatures are in the mid to upper 50's along with a light breeze from the SW. Current conditions for 4/13 consists of a thick Altostratus overcast and scattered lower level Cumulus, no precipitation in the last 24, light haze, and minimal air movement. It is from the WNW to 6 mph, wind puff: out of the WNW to 8 mph, humidity 59% (yesterday, the reading was 71%), dew point 28°, temperature 45°, and the barometric pressure 29.93" and falling. |
| 4/14/2011 |
5:29 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 4/13-almost a carbon copy of yesterday with a Cirrostratus overcast (including the immense halo and Contrail) and scattered lower level Cumulus. Temperatures are in the low to mid 50's {or about 3-5 degrees cooler than yesterday at this time} along with very little air movement. Current conditions for 4/14 consists of scattered high, mid and lower level clouds except in the West where it is partly cloudy (all Cumulus), light to moderate haze, and very little air movement. It is however, from the WNW at 5 mph, wind gust: out of the ESE to 10 mph, humidity 67%, dew point 28°, current snow level 2000', temperature 36.5°, and the barometric pressure 30.11" and rising. |
| 4/15/2011 |
5:19 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A flurry of activity is currently taking place in the Gulf and elsewhere including a very large pool of dry air that appears to be in a state of complete disarray as it is just there and not moving in any specific direction. How come? One possibility is the upper level winds are flowing down the SE side of a high pressure ridge {over the outer Aleutians} before turning East to flow along its ("the large pool of dry air" mentioned above) Southern boundary. The other is that the NPJ is also congruous to the ulw (upper level winds) pattern. It would appear therefore, that there is no appreciable "winds" to move it. Within it however, are three low pressure systems, the largest of which is adjacent to the AK portion of NW BC and its center {interestingly moving West} is South of the Yukon/AK border, and having some affect on the clouds associated with it via the counterclockwise rotation. Another one (though much smaller and also moving West) is located SW of Kodiak Island and the last one is moving SW along the middle Aleutians. Immediately South of the "pool" is a weak "pineapple express" like wave with it point of origin NE of HI moving East by NE at a good celerity before turning NE across the ocean and coming onshore in WA, OR, and Northern CA. Current conditions for 4/15 consists of a thicker Altostratus overcast, no precipitation in the last 24, light to moderate haze, and very little air movement. It is however from the ESE at 0 mph, wind gust" out of the NNW to 17 mph, humidity 73%, dew point 29°, current snow level 1500' rising to 3000' this afternoon, temperature 37.6°, and the barometric pressure 30.11" and rising. |
| 4/16/2011 |
5:29 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The flurry of activity in the Gulf and elsewhere continues, especially with the immense pool of dry air that now occupies the entire Gulf region. Within it, is a relatively moderate sized low pressure system still adjacent to the AK portion of NW BC and appearing to "rotate" in the same general location as yesterday. How come? Because, one again, there is absolutely no upper level wind or NPJ in that region to move anything. It's just there! However during the overnight, the SE portion of this "pool" advanced East by SE, thereby forcing yesterday's clouds (associated with the "pineapple express" like clouds) over WA to the SE giving the state clear skies except for the WA/OR Cascades. The clear skies will be temporary as the leading edge of yet another wave (similar to a "pineapple express") flows around the Southern boundary of a small pool of cold air that is coming ashore on Vancouver Island and the NW corner of WA with most of the clouds and precipitation directed at OR. Mid afternoon weather for 4/15-an Altostratus overcast with a fair amount of scattered Cumulus. Temperatures are in the upper 40's to low 50's along with an occasional breeze from the North and NE. Current conditions for 4/16- scattered Cirrus, Cirrostratus and Cumulus, no precipitation during the overnight, moderate haze, and very little via air movement though that is forecast to change this afternoon. It is from the NNW at 7 mph, wind puff: out of the NE at 0-8 mph, humidity 75%, dew point 36° {yesterday, the reading was 29°}, current snow level 3500', temperature 43.3°, and the barometric pressure 29.94" and falling. |
| 4/17/2011 |
5:32 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Today, activity abounds everywhere but the Gulf. Although the immense pool of dry air in the Gulf remains in the doldrums, the SE portion of it is, for the time being, off the SW BC and WA coasts. Our area, no longer under the influence of a trough,is now in a zonal flow. Further West, is a surface high pressure extending NW toward the inner Aleutians and West of that is a weak but very large low pressure system moving North (this is congruous to the NPJ flow) toward the outer Aleutians with the counterclockwise rotation having a profound affect on the clouds associated with it including a moderate sized pool of cold air West of its center attempting to conform to the rotation. SE of this "system" is a wave not only moving NE and simultaneously shifting SE but it is also similar to a "pineapple express" as it extends NE (from NW of Kaua'i HI)across the ocean to come ashore in OR and Northern CA before extending East into most of Southern ID and Northern NV. Mid afternoon weather for 4/16-except from the West to the SE, the most noticeable observation was the conspicuous absence of high level clouds (Cirrus/Cirrostratus) that were evident earlier today. In addition to widely scattered Cumulus, temperatures were in the mid to upper 50's along with brisk wind and gusts mainly from the SW and West but occasionally from the North. Current conditions for 4/17- partly cloudy skies (all Cumulus), no precipitation in the last 24, light haze and some actual wind velocities. They are from the NNW at 5-8 mph, wind gust: out of the WSW to 11 mph, humidity 45%, dew point 20° {yesterday, the readings were 75% and 36° respectively}, current snow level 500' rising to 1500' this afternoon, temperature 43.2°, and the barometric pressure 29.94" and falling. |
| 4/18/2011 |
5:37 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 4/17-aside from a long and elongated cloud deck from the NW to the SE, the skies are partly cloudy with Cumulus. This is somewhat contrastive to earlier in the day when we had clear skies. Temperatures are in the mid to upper 50's along with a nice breeze from the NW to the NE. Current conditions for 4/18- partly cloudy skies (most of which are from the South to the SE and North to NE), no precipitation in the last 24, light haze and some minor "wind" velocities as they have increased over the last few minutes. They are however from the NNE at 1 mph, then from the East at 0 mph, wind gust: out of the NNW to 10 mph, humidity 51%, dew point 21°, current snow level 1000' rising to 2000' this afternoon, temperature 36.9°, and the barometric pressure 29.92" and falling. |
| 4/19/2011 |
5:19 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although most of the immense pool of dry air in the Gulf remains in the doldrums, there is finally some evidence of upper level wind action over the Gulf via clouds moving South from the AK mainland toward the Gulf, and a "band of clouds" moving SE along the BC coast over the Queen Charlotte Islands toward Vancouver Island. The persistent large pool of cold, dry air however ( looks like a valentine!) remains off the coasts of South central BC, WA and OR. Immediately SW of this "pool" is a wave attempting to move NE toward WA; however,it will not succeed as it simultaneously moves East by SE up the West side of a weak surface high pressure adjacent to OR and in the process, encounters the NPJ in a NW flow into CA. South of the last islands of the outer Aleutians, is an immense low pressure system whose counterclockwise rotation is exerting a profound affect not only on the clouds associated with it, but also on the next wave as it is in the process of attempting to conform to the rotation. Mid afternoon weather for 4/18-partly cloudy skies (scattered Cirrus, Cirrostratus and Cumulus) with temperatures in the mid to upper 50's along with a light breeze from the NE (which contributes to why the air temperature feels much cooler that it actually is). Current conditions for 4/19-partly cloudy skies {the dominant type being Cumulus with a small area of Cirrostratus to the South}, light haze, no precipitation in the last 24, and some air movement. It is from the West at 2 mph, wind gust: out of the NW to 14 mph, humidity 60%, dew point 25°, current snow level 2000', temperature 40.6°, and the barometric pressure 30.10" and rising. |
| 4/20/2011 |
5:45 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although most of the immense pool of dry air continues to be in the doldrums, its present location is now along the entire coast of BC except for the AK portion (whereas yesterday, the location was South central BC) as well as WA and OR. In addition, there is a nice, albeit small, parabolic shaped surface trough extending SW into the ocean from central BC and indications are that it will shift SE into our area by sometime tomorrow. Followed by a break, there is a minor surface high pressure SW of the trough and located South of the middle Aleutians. However, there are signs that it will build quickly into the Gulf, and simultaneously strengthen thereby forcing the surface trough (mentioned above) into our area. Mid afternoon weather for 4/19-on a beautiful spring afternoon, we have partly cloudy skies (all Cumulus), temperatures in the mid 50's to low 60's along with a light breeze from the SW to NE. However, because of unstable air over our area, and afternoon heating by the sun, many intermittent showers have, from time to time, taken place on the higher summits and ridges around the valley. Current conditions for 4/20-from high thin clouds earlier today to an Altostratus overcast, a continuation of no precipitation, light haze, and very little air movement. It is from the WNW at 3-6 mph, wind gust: out of the NW to 14 mph, humidity 65%, dew point 23°, current snow level 2000', temperature 37.2°, and barometric pressure 30.01" and rising. |
| 4/21/2011 |
5:35 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Areas in and near the Gulf are bustling with activity, including the immense pool of cold air (which is finally on the move!) now moving SE from South central BC (between the Charlottes and Vancouver Island) to come ashore in Western WA and OR {except for the SW corner} while the Southern portion of this "pool" continued to sag South and is now adjacent to the Monterey Bay area. The small parabolic shaped surface trough that yesterday extended SW over the ocean from central BC, has shifted SE to the Victoria, BC/San Juan, WA area and indications appear to suggest that it will continue to shift SE and be over WA later today. Having said that, there is a small low pressure system in SW BC near the BC/WA border with its center located in the vicinity of Surrey/Chilliwack and Hope, BC and appearing to move SE toward WA. From the middle to the outer Aleutians is a weak low pressure system along with some waves moving NE up the steep West side of a high pressure ridge (that now occupies most of the Gulf area). The remaining waves, to the
SE, are basically moving East across the ocean before turning SE into Northern and North central CA. Mid afternoon weather for 4/20-a Cirrostratus overcast (with an impressive halo!) as "moisture associated with the wave approaching OR will spread mid and high level clouds into WA and OR". Temperatures are in the mid to upper 50's along with light air movement from the South. Current conditions for 4/21- partly cloudy skies {scattered Cirrus, Cirrostratus, and Cumulus}, light haze, no precipitation in the last 24 and light wind velocities. They are from the West at 11 mph, wind gust: out of the NW to 17 mph, humidity 37%, dew point 16° (yesterday, the readings were 65% and 23° respectively), current snow level 1000' [yesterday it was 2000'], temperature 44.4°, and the barometric pressure 29.85" and falling.
|
| 4/22/2011 |
5:37 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 4/21-partly cloudy skies (scattered Cumulus), temperatures in the low to mid 50's along with a brisk breeze and gusts from the West and NW respectively. Current conditions for 4/22-clear skies, light haze, no precipitation in the last 24, and some light air movement. It is from the NNW at 6 mph, wind gust: out of the NW to 14 mph, humidity 49%, dew point 22° {yesterday, the readings were 37% and 16° respectively}, current snow level 3000' (yesterday, it was 1000'), temperature 41.4°, and the barometric pressure 30.19" and rising. |
| 4/23/2011 |
5:32 AM |
0.00 |
0.0 |
M |
0.0 |
M |
It would appear that one of the larger changes outside the Gulf area and at 147E/37E occurred yesterday with a large area of dry air moving East by SE with the following results: the bottom third of two waves (adjacent to the PNW including BC, WA and OR) were forced in an East by SE direction into Northern NV, UT, CO, CA, (Needles/Blythe), and AZ (Yuma) areas respectively. At the same time, the upper two thirds were forced NE and what remains of the first wave is now but a mere remnant in NW BC while the second has become more organized and is adjacent to the PNW. At the NW end of it, is an impressive low pressure system moving SW with its center just South of the inner and moving toward the middle Aleutians. Its counterclockwise rotation is exerting significant influence not only on the clouds associated with it, but also on the lower level clouds as well. WOW! SW of this low pressure, is a small weak wave that appears to be a "divider" between an immense pool of dry air to the NE, and a very large pool of cold air to the SW. Although there is high pressure over most of BC (except for the NE quadrant) that extends NW into the Yukon and SE AK, there are signs that it will begin to break down sometime tomorrow. Mid afternoon weather for 4/22-very pleasant, widely scattered Cumulus, temperatures in the low to mid 60's along with light winds mainly from the NE and SE, but occasionally from the South. It is indeed a very pleasant afternoon. Current conditions for 4/23-clear skies, light to moderate haze, no precipitation during the overnight, and minimal to no air movement. It is, however from the West at 3 mph, wind puff: out of the NW to 9 mph, humidity 59% (yesterday, it was 49%), dew point 24°, current snow level 6000' {yesterday, it was 3000'}, observation time temperature 36.9°, and the barometric pressure 30.07" and falling.
|
| 4/24/2011 |
5:25 AM |
0.00 |
0.0 |
M |
0.0 |
M |
For the last several days, an immense ult over Northern Canada (the Nunavut area) continues to affect Alberta, Saskatchewan Manitoba (as well as other provinces); however, because of weakening high pressure extending NW through BC, into the Yukon and AK interior, it is strong enough to prevent this ult from advancing SW into the PNW while at the same time indications appear to suggest that it (the ult) will commence to shift East later today. In addition, another trough extends SE from Southern AK to the PNW toward OR. This combination (of the two "troughs") results in the high pressure being squeezed or compressed. Yesterday's low pressure system that was moving SW from the inner to middle Aleutians, has lost some strength and is not quite as impressive although its counterclockwise rotation is still influential on the clouds associated with it as well as the leading edge of dry air attempting to conform to the rotation. Mid afternoon weather for 4/23-almost a carbon copy of yesterday with widely scattered Cumulus, temperatures in the low to mid 60's along with light air movement from the East and SW. Current conditions for 4/24-from clear skies earlier this morning to scattered Cirrus and Cirrostratus {possibly heralding the return to an "active pattern"}, no precipitation in the last 24, light to moderate haze, and very little air movement. It is however from the WNW at 2-6 mph, wind gust: out of the NW to 12 mph, humidity 62%, dew point 29°, current snow level 5000' (yesterday, it was 6000'), observation time temperature 40.8°, and the barometric pressure 29.82" and falling. |
| 4/25/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although weak high pressure is over NW MT and extends NW into most of BC (except for the NW quadrant and NE corner) and all but the Northern portion of Alberta, it remains strong enough to prevent the immense ult over Northern Canada from advancing into the Northern tier states including MT ND, MN and MI; however, there are indications that the high pressure and immense ult will continue to weaken and shift East (from Saskatchewan/Manitoba to Ontario/Quebec) respectively. Regarding the NPJ, there is a single pear shaped isobar extending gradually SE from the Chukchi Peninsula (Russia) to just off the AK portion of BC and the Queen Charlottes. Why is this mentioned? Because there are lower level clouds {in the Gulf} moving NW over SW AK and the Bering Sea, turning SW across the "peninsula" {mentioned above} before bearing SE around the outer Aleutians with a large pool of cold air the leading edge of which turns NE to repeat the process. Closer to home, there is a large pool of cold air approaching the OR coast (the NPJ is in a zonal flow over OR) and the NE side of it is forcing a weak wave across Vancouver Island into SW BC while simultaneously spreading clouds across WA. This is congruous to the NPJ flow. Current conditions for 4/25-light mist/drizzle from an Altostratus overcast, and minimal air movement. It is from the West at 0 mph, wind gust: out of the NNW to 13 mph, humidity 65%, dew point 34°, current snow level 3500' (yesterday, it was 5000'), ot (observation time) temperature 47.1°, and the barometric pressure 29.70" and falling. |
| 4/26/2011 |
5:29 AM |
0.03 |
0.0 |
M |
0.0 |
M |
Although there is high pressure over BC and Alberta that extends into the South Eastern and SW portions of the Yukon and NW Territories respectively, WA is on the NW edge of a deep trough (extending SE into states such as NE, KS and OK) even though there is a minor depression draped across the Northern tier of the state. Behind the "depression" and adjacent to the WA/OR coasts, minor ridging is taking place followed by a relatively small trough well to the SE of the middle Aleutians. West of the "trough" is a stronger ridge over the outer Aleutians and it is here where most of the action appears to commence. A large wave {that is attached to another one moving in the same direction though South of and parallel to the Aleutians} moving NE and approaching the outer Aleutians attempts to crest the "stronger ridge" and as it does, will encounter upper level cross winds flowing in a NW to SE direction across the middle Aleutians into the bowels of the trough mentioned above. Now, near and in the Gulf, a large pool of cold air and lower level clouds are moving East by NE toward Southern and SW AK and the Yukon respectively as well as BC. Why? Because the NPJ flow is congruous to this pattern (SW to NE). Mid afternoon weather for 4/25-although Cirrostratus were visible (a relatively small halo was observed) we basically have an Altostratus overcast with scattered lower level Cumulus. Temperatures are in the low to mid 50's {or, about ten degrees cooler than yesterday at this time} along with calm winds. Conditions for 4/26-partly cloudy skies {Cumulus in the West to SW and Cirrus to the NE}, light haze and some actual wind velocities. It is from the WNW at 6-11 mph, wind gust: out of the NNW to 14 mph, humidity 50%, dew point 28° {yesterday, the readings were 65% and 34° respectively}, current snow level 3000', ot temperature 45.3°, and the barometric pressure 29.90" and rising. |
| 4/27/2011 |
5:28 AM |
0.00 |
0.0 |
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0.0 |
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Although yesterday's deep trough (that had spread SE into NE, KS, and OK) has not experienced much in the way of movement, WA still remains on the NW edge of it while simultaneously being influenced by minor ridging with the apex extending across the Southern half of the state. This is followed by a trough and behind it, is a stronger ridge of high pressure that has shifted East from the outer to the middle Aleutians. On the West side of this high pressure is a very large low pressure system moving East by NE toward SW AK with its center just North of the outer Aleutians. The counterclockwise rotation is, once again, having a significant affect not only on the clouds associated with it, but also on the lower level clouds attempting to conform to its rotation. However, as it {the low pressure system} gets closer to SW AK, it will have crested the ridge of high pressure and encountered upper level cross winds flowing in a NW to SE direction over the inner Aleutians into a trough adjacent to the WA/OR coasts. With the NPJ being in a SW and slight SW flow over SW BC (including Vancouver Island) and WA/OR respectively, a moderate pool of cold air approaches the WA coast before turning NE thereby forcing a small wave and another one ahead of it across Vancouver Island into SW BC. Mid afternoon weather for 4/26-another beautiful spring afternoon with partly cloudy skies (scattered Cumulus with the densest concentration to the South), temperatures in the low to mid 60's along with a light breeze and gust from the NW. Current conditions for 4/27-partly cloudy skies (scattered Cirrus, Cirrostratus and Cumulus), light haze, no moisture during the overnight and minimal air movement. It is from the SSW at 0 mph, wind gust: out of the NW to 13 mph, humidity 61% [yesterday, it was 50%], dew point 32°, current snow level 3000', ot temperature 42.8°, and the barometric pressure 30.06" and rising. |
| 4/28/2011 |
5:24 AM |
0.00 |
0.0 |
M |
0.0 |
M |
At this time, central to NE WA and NE ID are experiencing partly cloudy to clear skies, while Southern BC, SE WA, OR and most of ID are in clouds. How come? Since the area is not under the influence of high pressure, then either a large pool of dry air, upper level winds, or a combination of both could be contributing factors to our pleasant weather for the time being. Just off the WA/OR coasts is a trough with tight isobars extending NE across the SE quadrant of WA as well as OR. In addition, upper level winds are flowing in a NW to SE direction from the Kenai Peninsula, AK down the East side of a high pressure ridge (with its apex covering the Southern half of Kodiak Island) into the bowels of the trough before turning NE across WA (except for the SE quadrant). Just South of the NW end of Vancouver Island is what appears to be a strong low pressure system {at an altitude of 5340 meters or about 17,620') with its counterclockwise rotation having a significant affect not only on the clouds associated with it, but also on clouds in the Gulf, clouds adjacent to BC and the leading edge of a very large pool of cold air. Current conditions for 4/28-partly cloudy skies (scattered Altostratus and Cumulus-the dominant variety), no precipitation in the last 24, light haze, and minimal air movement. It is from the NNW at 8 mph, wind gust: out of the NNE to 20 mph, humidity 51%, dew point 26° [yesterday, the readings were 61% and 32° respectively], current snow level 1500' (yesterday, it was 3000') ot temperature 42.3°, and the barometric pressure 29.95" and falling. |
| 4/29/2011 |
5:33 AM |
0.00 |
0.0 |
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0.0 |
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Yesterday's trough that was just off the WA/OR coasts and the upper level winds that flowed across NE WA (except for the SE quadrant) shifted East (closer to the PNW coasts) and now with tighter isobars has sagged South into North central CA (North of the Bay area). Regarding the upper level winds, they have shifted East by SE, and are now flowing in a SW to NE
direction from SW ID (Boise vicinity) across the Western sector of MT into SW Saskatchewan to the central Saskatchewan/Manitoba border. Immediately to the West is a ridge of high pressure that has shifted closer to the PNW coasts since yesterday, occupies the Eastern and central Gulf area, and extends North into SE AK. There are indications however, that this high pressure will continue to build and shift East simultaneously until about Monday when it will be directly over our region (the PNW) then will commence to break down rather quickly only to be replaced by another developing high pressure adjacent to the BC coast that eventually will be over our region (the PNW) sometime next Thursday. This is followed by a deep trough whose width covers the entire length of the Aleutians and sags a moderate distance from the Aleutians in a South to SE direction. Mid afternoon weather for 4/28-a mostly cloudy sky with scattered Cirrus, Cirrostratus, and Cumulus, temperatures in the low to mid 50's along with a light breeze from the NE. Current conditions for 4/29-mostly overcast except in the West to SW where it is just partly cloudy, no precipitation in the past 24, and some light wind velocities. They are from the SSW at 9 mph, wind gust: out of the WNW to 20 mph, humidity 42%, dew point 22°, current snow level 2000', current ot temperature 43.2°, and the barometric pressure 30.10" and rising. |
| 4/30/2011 |
5:33 AM |
0.00 |
0.0 |
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0.0 |
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Mid afternoon weather for 4/29-a partly cloudy sky (scattered Cirrus, Cirrostratus and lower level Cumulus) that looked somewhat threatening from the East to the SE. Temperatures are in the upper 50's to low 60's along with brisk winds mainly from the NW. Weather conditions for 4/30-mostly clear skies with widely scattered Cumulus in the West, SW and along the Eastern horizon, light haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 3-13 mph, then from the West at 7 mph, wind gust: out of the WNW to 16 mph, humidity 46%, dew point 27°, the present snow level 2500', current snow depth for WA passes as of 3/31 compared to 4/30 for Stevens: then 116", now 114", Blewett: then 37", now 18", Snoqualmie: then 84", now 91". This will be the last "snow report" until next winter. The ot temperature 46.2°, and the barometric pressure 30.32" and rising. Some interesting EOM stats for April- 1) total rain: 0.06" OR 11.8% of average, 2) number of days with no precipitation: 26, 3) high BP: 30.32" on 4/30, 4) low BP: 29.64" on 4/02, 5) date with low BP and no precipitation: this event did not take place, 6) date with high BP and precipitation: 30.11" on 4/14 (0.01), 7) average BP: 29.98", 8) average observation time temperature: 42.1°, 8a) actual average morning temperature: 52.7° (this discrepancy was due to the several cold fronts that "invaded" WA), 9) high morning temperature: 49.8° on 4/10, and 10) low morning temperature: 35.6° on 4/07. |
| 5/1/2011 |
5:30 AM |
0.00 |
0.0 |
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0.0 |
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Although the ridge of high pressure is now exerting a stronger influence over the PNW than yesterday, it will not be directly over the PNW until tomorrow (Monday) after which it will begin to break down and simultaneously shift East as a trough approaches BC and WA later the same day. At the present time, it extends North of BC into the Yukon (except for the Northern tier) before turning sharply NW covering the Northern, North central and SE areas of AK. Because this high pressure ridge shifted East, it forced yesterday's trough East of WA and now not only sags into Southern CA, AZ and NM, but also into South central Baja, CA. WOW! Within this trough however, is a little dip along the NE OR/Western ID borders, a small trough sagging SW into UT and Northern AZ, and an ult (at 5340 Meters; or, about 17,620') on the NE end of this trough; or, in other words a trough within a trough! Now, behind the high pressure influencing the PNW, is a trough, followed by another smaller ridge of high pressure extending NW to just South of the outer Aleutians and on the SE side of it is yet another trough. Mid afternoon weather for 4/30-partly cloudy skies {all Cumulus} on a gorgeous spring afternoon. Temperatures are in the low to mid 60's along with light winds mainly from the NW {quite a contrast to yesterday when the winds were much stronger}. Current conditions for 5/01-clear skies, light haze, no precipitation in the last 24, and minimal air movement. It is from the NNW at 3-7 mph, wind gust: out of the NNW to 11 mph, humidity 53%, dew point 28°, current snow level 5500' [yesterday, it was 2500'], ot temperature 41.5°, and the barometric pressure 30.34" and rising. |
| 5/2/2011 |
5:33 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Even though this area is currently experiencing an Altostratus overcast, high pressure is directly over WA and extends North through BC into the Southern half of the Yukon before turning East just beyond the Southern Yukon/AK borders. On the steep West side of this ridge of high pressure is a trough extending SE and adjacent to South central BC, WA and OR with an upper level low (at 5340 meters or about 17,620') just off the AK portion of BC and the Queen Charlottes. Although there is some counterclockwise rotation, it is believed that the "rotation" is coming via upper level winds from two different directions [thereby giving the appearance of rotation] the first of which flows from the NE (the SW Yukon/SE AK borders respectively) in a nice arc before turning SE into the upper level low. The other direction features a NW to SE flow across the inner Aleutians (including Southern Kodiak Island) and down the East side of the high pressure ridge {with its apex just South of the inner Aleutians} into the bowels of the trough before turning North into the upper level low. Mid afternoon weather for 5/01-the only blemishes on another gorgeous spring afternoon are widely scattered Cirrus. Temperatures are in the low to mid 70's along with some air movement from the SE. Current conditions for 5/02-we are experiencing an Altostratus overcast with an occasional sprinkle, light to moderate haze and very little air movement. It is from the West at 3 mph, wind gust: out of the NNE to 12 mph, humidity 58%, dew point 32°, current snow level 4500' {yesterday, it was 5500'}, ot temperature 47.7°, and the barometric pressure 30.13" and falling. |
| 5/3/2011 |
5:20 AM |
0.01 |
0.0 |
M |
0.0 |
M |
The high pressure that gave the PNW such gorgeous spring days on Saturday and Sunday (4/30 & 5/01) has shifted East of the region and is now over MT extending NW into Alberta, Saskatchewan and the Yukon. In addition, yesterday's high pressure with its apex just South of the inner Aleutians (including Kodiak Island) has also shifted East, occupies most of the Gulf region, and is adjacent to the PNW. There are indications that this high pressure will continue to build and strengthen through tomorrow; however, by Thursday, it begins to shift East as a trough approaches the PNW. Yesterday's trough that extended SE and adjacent to South central BC, WA and OR has shifted NE into BC (between the two ridges of high pressure!) and sags SE through the interior of BC into WA {except for the SW quadrant}, Northern OR and all but the Southern portion of ID. With a low in the ID panhandle, and high pressure adjacent to the PNW is a scenario for light winds until later today when the ridge of high pressure moves further East [closer to the PNW] causing the winds to subside. Mid afternoon weather for 5/02-it would appear that we have an Altostratus overcast accompanied by thicker, lower level Cumulus with occasional brief showers. Temperatures are in the mid to upper 50's {quite a contrast to yesterday, when we had mostly clear skies and warmer temperatures} along with minimal air movement. Current conditions for 5/03-partly cloudy skies (all Cumulus), light haze, and light wind velocities. They are from the SSW at 3 mph, wind gust: out of the NNE to 11 mph, humidity 57%, dew point 31°, current snow level 3000' (yesterday, it was 4500'), ot temperature 42.8°, and the barometric pressure 30.26" and falling. |
| 5/4/2011 |
5:57 AM |
0.00 |
0.0 |
M |
M |
M |
Although high pressure remains over the PNW for today, it has shifted East of yesterday's location (adjacent to the PNW) due to a trough extending SW off the BC coast and an upper level low (at 5400 meters or 17,800') located SW and West of the AK portion of NW BC and Queen Charlottes respectively. Its classic "comma" appearance is very impressive as clouds associated with it move onshore from NW to North central BC (including NW Vancouver Island) while its main body is moving East by NE as it rides up the West side of the high pressure ridge into SW BC. However, there are indications that by tomorrow, this upper level low will shift NE {weakening in the process} to NW of the Queen Charlottes and West of Ketchikan, AK respectively. This is due to ridging with its apex South of Kodiak Island shifting NE into the Southern boundary of the Gulf. Behind this upper level low is a weak ridge of high pressure followed by yet another upper level low (at 5340 meters or 17,620') circulating in an oblong circle just beyond [in a slight NW to SE direction) the middle to outer Aleutians. Mid afternoon weather for 5/03-partly cloudy skies (all Cumulus) with the densest concentration from the SW to the South on a very pleasant spring afternoon. Temperatures are in the mid to upper 60's along with a light breeze from the NW and NE. Current conditions for 5/04-mostly clear skies except for widely scattered Cirrus, light haze, no precipitation in the last 24, and very little air movement. It is however, from the WNW at 4-6 mph, wind gust: out of the WNW to 14 mph, humidity 56%, dew point 29°, current snow level 6500' {yesterday, it was 3000'}, ot temperature 42.1°, and the barometric pressure 30.41" and rising. |
| 5/5/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although yesterday's high pressure ridge has shifted East over ID, Western MT, Alberta, Eastern BC, and strengthened to some extent in the process, it is still close enough to the PNW to be influential. Behind this high pressure however, are two areas of low pressure, one of which is just West of the Southern most AK portion of NW BC while the other is SE of the Queen Charlottes thus creating a depression sagging SE and adjacent to the PNW. This is followed by some minor ridging with its apex extending North to the Southern boundary of the Gulf. Behind this "ridge" is yet another trough extending SE from the Aleutians the width of which covers almost the entire length of these islands. Within this trough is an "egg shaped" upper level low (at 5340 meters or 17,620') circulating NW (nosing just past the middle Aleutians) to SE. There are indications however, that this same upper level low will be over WA (now at 5460 meters or 18,000'!) during the late afternoon /early evening hours on Sunday which sets up the potential for windy conditions. A very large wave {including a large pool of dry air associated with it) is moving NE toward BC {which is congruous to the 500 mb wind charts {SW to NE}. In the process, it forced on immense pool of dry air into the PNW {including BC, WA, and OR} thereby giving our area partly cloudy skies for the time being. Current conditions for 5/05-partly cloudy skies, no precipitation in the last 24, light haze, and light air movement. It is from the NNW at 5 mph, then from the WNW at 3 mph, wind gust: out of the North to 13 mph, humidity 59%, dew point 35°, current snow level 5000' {yesterday, it was 6500'}, ot temperature 49.5°, and the barometric pressure 30.04" and falling. |
| 5/6/2011 |
5:33 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 5/05-partly cloudy skies (all Cumulus except for some Cirrostratus along the Western and Southwestern horizons), temperatures are in the mid 60's to low 70's along with a light breeze from the West. Current conditions for 5/06-except for slight partial clearing toward the NE, an Altostratus overcast and scattered lower level Cumulus. There has been no precipitation in the last 24 (as a matter of fact, the last good rainfall was on 3/27 and 3/19 when 0.28" and 0.74" respectively was received). Light haze is visible along with some light wind velocities. They are from the WNW at 4-6 mph, wind gust: out of the NW to 16 mph, humidity 50%, dew point 34°, current snow level 4500', ot temperature 54°, and the barometric pressure 29.94" and falling. |
| 5/7/2011 |
5:56 AM |
0.03 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 5/06-partly cloudy (scattered Altostratus, Altocumulus, and lower level Cumulus), temperatures are in the upper 50's to low 60's along with light air movement from the NW. As the afternoon progressed however, the weather gradually deteriorated as cloud cover changed from partly cloudy to overcast, the winds picked up mainly from the West making the air temperature "feel" cooler culminating in sprinkles to a light rain. Current conditions for 5/07-increasing clouds since earlier this morning except for the NW and South, where it is partly cloudy. In addition, we have moderate haze and minimal air movement. It is from the South at 1-2 mph, then from the SSW at 1 mph, wind gust: out of the NNE to 11 mph, humidity 75% {yesterday, the reading was 50%}, dew point 38°, current snow level 4000' [since 5/05, it has fallen 1000'], ot temperature 44.9°, and the barometric pressure 29.79" and rising. |
| 5/8/2011 |
6:23 AM |
0.20 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 5/07-partly cloudy skies (all Cumulus-except for a band of Altostratus in the East-with a large cloud deck from the NW to the SW and simultaneously extending East while another stretches from the South to the SE. Temperatures are in the upper 50's to low 60's along with light air movement from the East. However, around 1PM, it started to sprinkle and within a few minutes it became a downpour mixed with periodic pea sized hail! As if that wasn't enough, a loud and rumbling peel of thunder was heard. Current conditions for 5/08-a mostly cloudy sky (Altostratus-the dominant cloud type-some Altocumulus, and scattered lower level Cumulus) with partial clearing in the West, NW and NE. We have some light haze and minimal air movement. It is from the West at 1-4 mph, wind gust: out of the NW to 17 mph, humidity 55%, dew point 31° {yesterday, the readings were 75% and 38° respectively}, current snow level 3500', ot temperature 48.2°, and the barometric pressure 29.79" and falling. |
| 5/9/2011 |
5:19 AM |
0.03 |
0.0 |
M |
0.0 |
M |
Ahead of the ridge of high pressure along the PNW is a deep trough (with tighter isobars since yesterday)sagging South of WA into NV and close to the Southern CA/Baja border. Within this trough however, is an upper level low (at 5520 meters or 18,200') circulating in a slight SE to NW oblong with its apex just South of the BC/WA border {quite possibly near the Oroville, WA area}. There are upper level winds within this upper level low (except for the NE and SE quadrants of WA and OR respectively) as well as in the bowels of the trough. The big, high pressure ridge that yesterday occupied almost the entire Gulf region shifted East, has simultaneously weakened and is now along the PNW coast though still extending NE just into North central and SW BC. There are indications however that by later today this current high pressure will deteriorate into a minor ridge though still extending NE but now into SW BC and by tomorrow, it appears that there will be a SW flow into central BC with minor ridging extending NE into SW WA and Western OR. Current conditions for 5/09-mostly clear skies with scattered clouds to the East and South, light haze, and light wind velocities. They are from the West at 5 mph, then from the WNW at 5 mph, wind gust: out of the NW to 16 mph, humidity 54%, dew point 34°, current snow level 5000' [yesterday, it was 3500'], ot temperature 48.4°, and the barometric pressure 29.97" and rising. |
| 5/10/2011 |
5:28 AM |
0.00 |
0.0 |
M |
0.0 |
M |
As the Gulf region was occupied two days ago (5/08) by a strong ridge of high pressure, it is now controlled by an oblong shaped upper level low at 5280 meters or, 17,420' that shifted SE from the inner Aleutians/Kodiak Island area to near the Queen Charlottes and the AK portion of BC along with a trough sagging to the SW. In addition, the upper level winds appear to be more concentrated in the upper level low than in the trough. Behind this "low" is a ridge of high pressure over the Aleutians before turning NW into the Chukchi Peninsula (Russia) followed by yet another upper level low. There are signs however, that during the next few days, these two upper level lows will develop to such an extent that the ridge of high pressure (mentioned above) will become moderately squeezed/compressed. As far as the PNW is concerned, WA is on the NW precipice of a deep trough sagging further SW not only into Southern CA, but now into Northern Baja! Within this trough is an upper level low at 5520 meters or 18,200' circulating from the SW (the area just mentioned) to the NE {covering most of WY, Southern ID and SW MT [adjacent to Yellowstone National Park]}. Mid afternoon weather for 5/09-a gorgeous spring afternoon indeed with a small area of Cirrus to the NW and scattered Cumulus in the SW to the South, a light but pleasant breeze mainly from the NW though occasionally from the North and temperatures in the low to mid 70's. Current conditions for 5/10-clear skies, light haze, no precipitation during the overnight, and some light wind velocities. They are from the West at 11 mph, then from the NNW at 9 mph, wind gust: out of the West to 21 mph, humidity 32% {yesterday, it was 54%}, dew point 34°, current snow level 8000' [yesterday, it was 5000'], ot temperature 54.8°, and the barometric pressure 29.98" and rising. |
| 5/11/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
It is believed that yesterday's agent responsible for giving WA and OR gorgeous weather was not high pressure, but rather an immense area of dry air (which, by the way, has shifted shifted East). Explanation/Reasoning? Indeed, there was high pressure over the mid West; however, it was not close enough to be influential to this area as the Western side of this ridge was "over" the Eastern Dakotas. As for this area, a weak ridge of high pressure extended NE into SW WA and Western OR therefore not able to cause a beautiful day in this area at least. A notable event is an upper level low at 5280 meters or 17,420' with its center adjacent to the Queen Charlottes. The counterclockwise rotation is having a profound affect not only on the clouds associated with it, but also on a large area of dry air flowing SE from SW AK {the Kenai Peninsula/Kodiak Island area} as well as the leading edge of an immense pool of cold air as both attempt to conform to the "rotation". In addition, a very large trough, adjacent to the West coast, is moving East by SE and forcing clouds inland into WA, OR (although the Eastern third of these states appear to be clear) and Northern CA. Current conditions for 5/11-an Altostratus overcast with scattered lower level Cumulus, light to moderate haze, no precipitation in the last 24, and minimal air movement. It is however from the West at 1-2 mph, wind gust: out of the NNW to 12 mph, humidity 60%, dew point 41° [yesterday, the readings were 32% and 34° respectively], current snow level 7000' {yesterday, it ws 8000'}, ot temperature 55.4°, and the barometric pressure 29.80" and falling. |
| 5/12/2011 |
5:18 AM |
0.02 |
0.0 |
M |
M |
M |
Activity abounds near the Gulf and elsewhere today as the persistent trough that yesterday was adjacent to SW BC, WA, OR and Northern CA, has sagged a little further South, shifted East by SE with the SE side of the trough coming ashore over WA, OR and NW CA in a SW flow. In addition, it appears that there are now four upper level lows [varying in elevation from 5280 meters (17,420') to 5480 meters (18,000')] within this trough in various shapes due to the Coriolis Effect. It is believed that there are two events contributing to the current nice weather. Even though there is a flat ridge of high pressure {extending North near the Arctic Circle} over Alberta, Saskatchewan and Manitoba, it is close enough to be influential in the NW area. The other event is a large swath of dry air moving from the SW to the NE over NW CA, Western OR, and most of WA. This is congruous to the NPJ flow (SW to NE) and the wind charts. Behind this trough is a ridge of high pressure extending North over the Aleutians before turning NE over AK to beyond the Pt. Barrow/Prudhoe Bay area. Mid afternoon weather for 5/11-an overcast sky (scattered Cirrostratus, Altostratus, and lower level Cumulus), a light breeze from the South and SW with temperatures in the low to mid 70's. Current conditions for 5/12-clear skies (except for some Cirrus to the South and SE), light haze and wind velocities. They are from the NNW at 6-9 mph, wind gust: out of the NW to 14 mph, humidity 50%, dew point 27° {yesterday, the readings were 60% and 41° respectively}, current snow level 3000' [yesterday, it was 7000'], ot temperature 47.1°, and the barometric pressure 30.10" and rising. |
| 5/13/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
WOW! there is dynamic activity in and near the
Gulf today! The slow-moving and persistent upper level low now at 5400 meters (17,820') shifted South of yesterday's location (near the Southern half of the Charlottes) and is now adjacent to SE Vancouver Island and NW WA. Whereas yesterday, the trough sagged in a SE direction over WA, OR, and NW CA, it now sags in a slight SW direction and simultaneously sags further South than yesterday, has shifted slightly East with a SW flow over WA, OR, and Northern CA. It appears that this trough was prevented from shifting further East by a surface high pressure with its apex extending into Southern MT {near the Bozeman/Yellowstone area}. On the extreme NW BC and SW Yukon border, is another upper level low at 5460 meters (18,000') followed by a relatively small trough [sagging West!] near the Kenai Peninsula area. Behind the the deep trough is a ridge of high pressure with its apex just reaching the inner Aleutians and right behind it, is yet another large trough. In other words, the high pressure is keeping the two titans from clashing for the time being! Mid afternoon weather for 5/12-partly cloudy skies (all Cumulus though scattered in the NE and from the NW to the South), temperatures in the mid to upper 60's along with a light breeze from the NE and East. Current conditions for 5/13-partly cloudy skies(scattered Cirrus, Cirrostratus, and lower level Cumulus), light haze, no precipitation in the last 24, and very light wind velocities. They are from the NNW at 6 mph, then from the WNW at 4 mph, wind gust: out of the NW to 13 mph, humidity 60%, dew point 31° (yesterday, the readings were 50% and 27° respectively), current snow level 6000' [yesterday, it was 3000'], ot temperature 47.1°, and the barometric pressure 30.29" and rising. |
| 5/14/2011 |
5:18 AM |
0.14 |
0.0 |
M |
0.0 |
M |
A few changes have occurred to the upper level low now at 5400 meters (16,820') as it has shifted well South of yesterday's location (near SE Vancouver Island and NW WA)to Northern CA (adjacent to the Crescent City) with the Southern portion of it turning to the SE thereby forcing a band of clouds ashore in an East by NE direction from NW CA to the SLO area followed by the middle portion of a narrow swath of dry air attempting to come ashore near Eureka, CA. The disturbance responsible for the overnight precipitation has since moved NW into central BC. As far as the trough is concerned, it shifted East to just off the WA, OR, and Northern CA coasts and whereas yesterday the flow was from the SW, it has shifted to a North/South flow over the states just mentioned along with tighter isobars. Behind this trough, is a ridge of high pressure which moved slightly East from the inner Aleutians and strengthened somewhat in the process with its apex now extending North over Kodiak Island into the Aleutian Range/Dillingham area of SW AK. Mid afternoon weather for 5/13-increasing cloudiness with scattered Cirrus, Cirrostratus, and Cumulus with a large deck of "pillow-like" Cumulus extending from the SW toward the NE. Temperatures are in the low to mid 70's along with a light breeze from the North and NE. Current conditions for 5/14-overcast with intermittent showers, moderate haze, and very little air movement. It is from the West at 3 mph, then from the WSW at 3 mph, wind gust: out of the NNW to 17 mph, humidity 92%, dew point 49° [yesterday, the readings were 60% and 31° respectively], current snow level 9500' {yesterday, it was 6000'}, ot temperature 54°, and the barometric pressure 29.90" and falling. |
| 5/15/2011 |
5:30 AM |
0.49 |
0.0 |
M |
0.0 |
M |
The total rainfall shown in the box above is represented by the 0.04" that fell yesterday (5/14) after the total precipitation amount was recorded and the 0.45" that fell last evening 5/14). Mid afternoon weather for 5/14-mostly cloudy skies (Cirrus, Altocumulus, and scattered lower level Cumulus)except for some partial clearing in and toward the NW and somewhat threatening looking clouds from the NE to the East and in the South. Temperatures are in the upper 60's to low 70's along with minimal air movement. Current conditions for 5/15: a Nimbostratus overcast in the form of such steady rain that the higher ridges and summits are obscured from view! In addition, there is minimal air movement. It is, however, from the WNW at 2-4 mph, wind gust: out of the WNW to 10 mph, humidity 95%, dew point 49°, current snow level 6000' [yesterday, it was 9500'], ot temperature 55.6°, and the barometric pressure 29.54" and falling {since 5/13 and 5/14, it has dropped 0.75" and 0.36" respectively}.
|
| 5/16/2011 |
5:17 AM |
0.56 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 5/15-although we continue to experience a Nimbostratus overcast, the intensity of the precipitation has lessened considerably since earlier today when it was coming down at a good clip, though not heavy. Temperatures are in the mid 50's along with minimal air movement. Current conditions for 5/16-A Stratus overcast (no low clouds/fog obscuring the higher summits and ridges as was the case yesterday), light haze, and some light wind velocities. They are from the NNW at 11-12 mph, wind gust: out of the WNW to 17 mph, humidity 59%, dew point 34° {yesterday, the readings were 95% and 49° respectively}, current snow level 3500' [yesterday, it was 6000'], ot temperature 50.6°, and the barometric pressure 29.69" and falling. |
| 5/17/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 5/16-a rather coolish spring afternoon with a Stratus overcast and scattered lower level Cumulus from the NW to the East. Temperatures are in the mid to upper 50's along with a light breeze from the SW. Current conditions for 5/17- partly cloudy skies with scattered high level clouds (Cirrus and Cirrostratus) no precipitation in the last 24!, light haze and very little air movement. It is from the WNW at 3-4 mph, wind gust: out of the WNW to 11 mph, humidity 61%, dew point 33°, current snow level 4000', ot temperature 41.7°, and the barometric pressure 29.97" and rising. |
| 5/18/2011 |
5:37 AM |
0.00 |
0.0 |
M |
0.0 |
M |
WOW! what a difference a day makes! With the NPJ now well South of the PNW, a trough sags South of WA and OR to the Southern CA/Baja border along with tighter isobars than yesterday. The entire PNW (Southern BC, WA and OR) are being influenced by a very large upper level low at 5520 meters (18,200') circulating in a general North/South direction from coastal CA (Monterey Bay area) to BC (in the vicinity of Fort St. John). Within the upper level low are two lows one of which is located NE of Cranbrook, BC {near the Continental Divide} and the other is adjacent to the NW CA coast {Eureka area}. Behind this upper level low, is a weak ridge of high pressure; although later today, there are signs that it is going to strengthen and simultaneously move East [closer to the PNW] thereby forcing the trough to shift SE. NW of this high pressure and well South of the inner
Aleutians, is another trough sagging to the SW with yet another upper level low at 5280 meters (17,400'] within it. As with the high pressure (mentioned above), there are signs that the trough will shift NE and that the upper level low will now be at 5340 meters (17,620'). Mid afternoon weather for 5/17-Scattered Cirrus, Cirrostratus and lower level Cumulus (to the SW and NW). Temperatures are in the upper 60's to low 70's along with light air movement from the South. Conditions for 5/18-scattered Cirrus and Cumulus under mostly clear skies, light haze, no precipitation in the last 24, and minimal air movement. It is from the WSW at 4-5 mph, wind gust: out of the WNW to 13 mph, humidity 64%, dew point 35°, current snow level 5500' (yesterday, it was 4000'), ot temperature 45°, and the barometric pressure 29.84" and rising. |
| 5/19/2011 |
5:19 AM |
0.00 |
0.0 |
M |
0.0 |
M |
One of the contributing factors to nice weather in the PNW (Southern BC, WA and OR) today, began with a wave that yesterday was located South of and parallel to the outer Aleutians. Moving in an Easterly direction, it forced a large area of dry air (immediately ahead of it) and what appears to be a low pressure system in the same direction just mentioned into the steep West side of a high pressure ridge just off the PNW coasts with its apex extending North into the AK portion of NW BC. Even though the center of this low pressure is SE of Kodiak Island, and its counterclockwise rotation is having an impact on the clouds immediately associated with it as well as the leading edge of the "wrap around" clouds, the main body (Northern half) is moving North into Southern AK and attempting to come ashore on the AK portion of BC, while simultaneously moving SE over the Queen Charlottes and to the SW of Vancouver Island. This is because these clouds have crested the ridge of high pressure and have begun the steep decent down the East side along the coastline of WA and SW OR before turning SE into the trough the sag of which has not changed much since yesterday {Southern CA/Baja border}. Current conditions for 5/19-clear skies (except for a relatively large area of high level clouds to the South), light haze, no precipitation in the last 24, and light wind velocities. They are from the NNW at 5-11 mph, wind gust: out of the WNW to 17 mph, humidity 44% [yesterday, it was 64%], dew point 33°, current snow level 8000' {yesterday, it was 5500'}, ot temperature 52.9°, and the barometric pressure 30.00" and rising.
|
| 5/20/2011 |
5:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Some very interesting events are taking place in the PNW as well as the Gulf area this morning. The upper level low that yesterday had "influenced" most of CA (as well as other states) has shifted NE and is now circulating in a general North/South pattern from NE AZ and NW NM to Southern MT. The trough, in which the ull {upper level low} is contained, has sagged further South into central Baja, CA and NW Mexico along with relaxed isobars in contrast to yesterday. Circulating in a relatively small orbit from NE OR to NW WA is another upper level low at 5640 meters (18,600') which appears to be weakly attached to the ull (mentioned above) and is responsible for the clouds in our area as the Western sky is mostly clear. South of and parallel to the outer Aleutians is a small upper level low within a larger one, along with a trough, moving in an East by NE direction. This action forces a large pool if dry air immediately ahead of it in an Easterly direction which in turn forces the bottom third of a weak wave near the coasts of WA, OR, and Northern CA. Current conditions for 5/20-partly cloudy skies, light to moderate haze, no precipitation during the overnight and minimal air movement. It is from the North at 4 mph, then from the NNW at 1 mph, wind gust: out of the NW to 15 mph, humidity 62%, dew point 38° [yesterday, the readings were 44% and 33° respectively], current snow level 9000' (yesterday, it was 8000'), ot temperature 52.3°, and the barometric pressure 30.05" and rising. |
| 5/21/2011 |
5:10 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday, located South of the middle to outer Aleutians was a smaller upper level low within a larger one. Since then, the smaller one has dissipated and the larger one (now at 5340 meters [17,620']) has moved NE circulating in a general SE to NW direction past the inner to middle Aleutians. In the process of moving NE, it forced 1) a moderate pool of dry air, 2) a weak band of clouds, 3) a long and narrow "river" of dry air all in an Easterly direction which, in turn, forced 4) another weak band of clouds ashore into central CA, most of Western NV, OR, WA (responsible for the present cloud cover in this area) before turning NW along the entire BC coastline and into SE AK. This is congruous to the NPJ [SE to NW] and the wind charts. In addition, the trough (associated with the upper level low mentioned above) has sagged further East into the Queen Charlottes and the AK portion of NW BC with the Southern most boundary dropping SW along the WA coast. There are indications however, that it will sag further SW to "engulf" WA and most of OR {except for the Southern portion near the OR/CA border}, the SE quadrant, and extreme NE OR by sometime tomorrow morning. Current conditions for 5/21-an Altostratus overcast with lower level and scattered Cumulus, moderate haze, no precipitation in the last 24 and light wind velocities. They are from the WNW at 4-8 mph, wind gust: out of the NNW to 14 mph, humidity 47% (yesterday, the reading was 62%), dew point 38°, current snow level 7000' [yesterday, it was at 9000'], ot temperature 61.3°, and the barometric pressure 29.95" and rising. |
| 5/22/2011 |
5:18 AM |
0.02 |
0.0 |
M |
0.0 |
M |
Once again, a smaller upper level low (5340 meters [17,620']) within a much larger one (5400 meters [17,820']) both of which are circulating in a general SW to NE pattern with the large one completely engulfing the Aleutians as it extends just into SW AK. Since yesterday (when the Southernmost boundary of the trough had dropped SE along the WA coast), it has sagged further SE into WA, the Northern portion of the ID panhandle, SW to NE OR and Northern CA. Approaching the Gulf area is a weak wave being pushed in an Easterly direction toward BC by another and larger one right behind it. In addition, the clouds in BC and along its coast are flowing from the SE to the NW into the Yukon as well as Southern and central AK respectively. This appears to be more congruous to the wind charts (SE to NW) than with the NPJ. Mid afternoon weather for 5/22-an Altostratus overcast with scattered lower level Cumulus and occasional sprinkles that eventually evolved into light rain showers on a cool spring afternoon. Temperatures are in the low to mid 60's along with a light breeze from the NW. Current conditions for 5/22-partly cloudy skies (scattered Cirrus and Cumulus), light haze, no precipitation during the overnight, and light wind velocities. They are from the North at 4 mph, then from the NNW at 5 mph, wind gust: out of the WNW to 14 mph, humidity 61% {yesterday, the reading was 47%}, dew point 40°, current snow level 5000' [yesterday, it was at 7000'], ot temperature 52.7°, and the barometric pressure 29.92" and rising. |
| 5/23/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
By way of an interesting note, the NPJ, is well South of the PNW and in a zonal flow across Southern and central CA and Baja respectively. However, there are indications that it will begin to trek North sometime late tomorrow, and be in a slight SW flow across OR by sometime Friday morning leaving WA and Northern ID high and dry. An immense pool of dry air extends in a general NW to SE direction from Southern AK and SW Yukon down the PNW coastlines to the Oxnard/Ventura area (NW of LA). This is followed by a moderate sized wave moving East by NE with the Northern portion of it moving NW across Kodiak Island, and the inner Aleutians into SW AK while the Southern portion is attempting to ride up the West side of a high pressure ridge adjacent to Vancouver Island, WA, and OR. This description is congruous to both the wind charts and NPJ flow (South to North). Behind the wave is a moderate pool of cold air also moving East by NE. So,what is driving these two entities in their respective directions? It would appear that the upper level winds flowing NW to SE across the middle Aleutians into the bowels of the trough then turning NE, would provide a possible solution. Mid afternoon weather for 5/22-mostly cloudy skies (scattered Cirrus, Altocumulus, and Cumulus) on a pleasant spring afternoon. Temperatures are in the low to mid 70's along with some air movement from the NW. Current conditions for 5/23-overcast skies (except for a small area of partial clearing to the West),light haze, no moisture during the overnight and light air movement. It is from the WNW at 5-6 mph, wind gust: out of the NW to 14 mph, humidity 57%, dew point 37°, current snow level 4500', ot temperature 55.4°, and the barometric pressure 29.96" and rising. |
| 5/24/2011 |
5:18 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, some changes have occurred to the trough over Western WA and NW OR. Its dimensions have narrowed considerably as it now sags in a general SE direction over SW WA, all but extreme Eastern and SW OR into NE CA. This is followed by further SE sagging into most of NV and UT before sagging South into Northern Baja, CA and AZ. Behind the trough, a weak ridge of high pressure moved East or closer to Vancouver Island, WA and OR while simultaneously, its apex has flattened to some extent. On the West side of the high pressure ridge, are three upper level lows adjacent to the West coast and circulating in a general SW to NE pattern at 5340-5480 meters (17,620'- 18,000') in addition to upper level winds and a moderate sized pool of cold air. With three more upper level lows along the outer Aleutians moving NE up the West side of yet another weak ridge of high pressure, and the clouds associated with the upper level low (mentioned above)trying to conform to the counterclockwise rotation, gives the impression that an imminent collision is about to occur! Mid afternoon weasther for 5/23- Not as cloudy as earlier in the day, though we do have scattered Cirrus, Cirrostratus, a small area of Altocumulus and lower level Cumulus. Temperatures are in the upper 60's to low 70's along with light air movement generally from the NW to the NE. Current conditions for 5/24-mostly clear skies, light haze, no precipitation in the last 24, and light wind velocities. They are from the NNW at 8-10 mph, then from the West at 7 mph, and fianally from the WNW at 10 mph, wind gust: out of the NNW to 19 mph, humidity 52%, dew point 38°, current snow level 5000', ot temperature 56.3°, and the barometric pressure 29.94" and rising. |
| 5/25/2011 |
5:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The "egg shaped" upper level low that yesterday was circulating in a general SE to NW pattern along the Southern perimeter of the Gulf, has shifted East and is now circulating in a slight SE to NW pattern just off the coasts of WA, OR, and Northern CA along with very tight isobars. There are indications that later today, it will shift abruptly NE into NW CA in a general SE to NW pattern and by tomorrow will be forced further NE into OR as the NPJ will be in a NW flow over central to Northern CA. In the process, the ridge of high pressure adjacent to the West coast (WA, OR, and Northern CA, was, quite possibly, responsible for yesterday's pleasant spring afternoon) was forced to the SE and simultaneously weakened considerably to minor ridging over NV with its apex extending North into the SE and SW corners of OR and ID respectively. Followed by some minor ridging is a very large upper level low circulating in a general SE to NW direction (into SE Chukchi Peninsula, Russia) with the Aleutians almost bisecting the middle portion of this "low" as it bears down on its much smaller predecessor. Mid afternoon weather for 5/24-partly cloudy skies (all Cumulus) with the more dense formations in the West to SW as well as the NW and NE horizons on a very pleasant afternoon. Temperatures are in the mid to upper 70's along with some light air movement generally from the East and SE. Current conditions for 5/25-overcast skies {precipitation has not yet commenced), light to moderate haze, and light air movement. It is from the West at 1-4 mph, then from the WSW at 4 mph, wind gust: out of the ESE to 17 mph, humidity 69%, dew point 42° [yesterday, the readings were 52% and 38° respectively], current snow level 6500' (yesterday, it was 5000'), ot temperature 53.6°, and the barometric pressure 29.95" and rising. |
| 5/26/2011 |
5:10 AM |
0.25 |
0.0 |
M |
0.0 |
M |
As yesterday's moderate pool of dry air (located SE of the middle to outer Aleutians) advanced in an East by SE direction, it forced a relatively short band of clouds (associated with a much longer and wider one and lying in a general SE to NW pattern with the Northern portion just reaching the middle Aleutians) to the NE which eventually broke away from its parent band and almost dissipated in the process which now extends from the SE (off the OR coast) to the NW (adjacent to the Queen Charlottes). Meanwhile, this immense pool of dry air is being directed into OR as the NPJ is immediately underneath it in a slight NW flow over central CA to Southern OR and pushing clouds across Northern CA, NV, and UT into CO. This in turn forced clouds NE across WY, which in turn forced clouds in MT in an East by NE direction into Western North and South Dakota as well as Western NE. From this location, these clouds extend in a long and lengthy NW direction across most of MT, SW Alberta, Northern ID, Southern BC, SE to NW WA, Vancouver and the Queen Charlotte Islands, the Gulf, and finally across the Kenai Peninsula and Kodiak Island into SW AK. Just getting started as there was much more to describe! Mid afternoon weather for 5/25-a Nimbostratus overcast in the form of light rain, almost no air movement, and temperatures in the upper 50's to low 60's which is about 10-15 degrees cooler than yesterday at this time. Current conditions for 5/26-scattered Cirrostratus, Altostratus, and lower level Cumulus with partial clearing to the SW. In addition, we have some haze and light wind velocities. They are from the WNW at 4-5 mph, wind gust: out of the SW to 23 mph, humidity 47%, dew point 30° {yesterday, the readings were 69% and 42° respectively}, current snow level 4000', ot temperature 51.8°, and the barometric pressure 29.78" and rising. |
| 5/27/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, three specific changes have occurred in the West as well as in and near the Gulf. The flat ridge of high pressure over Eastern MT, the Dakotas and WY with its apex extending into Southern Saskatchewan has moved East over Eastern NE and MN with its apex extending NW into Manitoba (1st change). The small trough just off the coasts of SW Vancouver Island, WA, and NW OR is now sagging in an Easterly direction across WA, the panhandle of ID into Eastern MT just West of the MT/ND border (2nd change). And the trough that was sagging SE into NV and NW UT has completely dissipated (3rd change). What caused these changes, or, why did they occur? It is believed that the constituent responsible for these changes appears to be the NPJ as it was in a zonal flow over central to Northern CA before extending North to include OR. Meanwhile, an immense upper level low (within which is a large pool of cool, dry air coming ashore in Western WA and OR) is circulating in a general SE to NW pattern {with its Southern boundary "resting" along the NPJ's Northern perimeter} as it extends from just off Vancouver Island and the NW corner of WA to the start of the AK peninsula before turning SW just beyond the inner to middle Aleutians. Current conditions for 5/27-unstable conditions with partial clearing to the East, a very large and threatening lower level cloud deck in the West, light haze, no precipitation in the last 24 (that may change!), and light wind velocities; although, they have picked up in the last few minutes. They are from the West at 3-4 mph, wind puff: out of the NW to 9 mph, humidity 71% [yesterday, the readings were 47% and 30° respectively], dew point 38°, current snow level 3500', ot temperature 45.3°, and the barometric pressure 29.86" and rising. |
| 5/29/2011 |
5:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 5/28-mostly overcast skies (in what appeared to be a small area of Mammatus from overhead toward the NE which dissipated within a short period of time, scattered Cirrus, Cirrostratus and lower level Cumulus). Temperatures are in the low to mid 60's along with minimal air movement. Current conditions for 5/29-it looks as though we have a high level overcast (Cirrostratus) but upon closer observation, it appears that the "overcast" is in the form of smoke as there is no halo which is a classic characteristic of a Cirrostratus overcast. There has been no precipitation in the last 24, we do have light to moderate "haze" (imagine that!) and light wind velocities. They are from the NNW at 7 mph, then from the WNW at 5 mph, wind gust: out of the West to 18 mph, humidity 62%, dew point 40°, current snow level 6000' {yesterday, it was 4000'}, ot temperature 52.5°, and the barometric pressure 29.83" and rising. |
| 5/30/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday's upper level low has shifted further to the SE, and in the process appears to have weakened as it is now a trough sagging SE into central Baja, AZ, NM and most of CO. Within the trough however, is a relatively small upper level low circulating in a general SE to NW pattern from SE WY (near the SD/NE border) to North central MT (quite possibly near the Havre area). Immediately East of this upper level low, is a ridge of high pressure over the Dakotas and Mid West with its apex extending NW into SE Saskatchewan and Manitoba (except for the Northern portion. Meanwhile, another upper level low (with a small pool of dry air on its Southern boundary) and circulating in a general SW to NE pattern , is sagging to the SW and moving in an East by SE direction with its SE side attempting to come ashore in SW OR, and NW CA. Behind this upper level low, is a ridge of high pressure with its apex South of Kodiak Island. Mid afternoon weather for 5/29-the visible cloud type through the haze/smoke (though not quite as bad as earlier in the day) appears to be scattered Cumulus. Temperatures are in the mid to upper 70's, along with a nice breeze from the West though occasionally from the NW. Current conditions for 5/30-mostly cloudy skies {the dominant type being Altostratus, and small areas of scattered Altocumulus to the South and West, and widely scattered Cumulus} with light to moderate haze [which is a considerable improvement from yesterday],no precipitation in the last 24, and very light wind velocities. They are from the NNW at 7 mph, then from the WNW at 5 mph, wind gust: out of the NW to 13 mph, humidity 57%, dew point 39°, current snow level 5500', ot temperature 54°, and the barometric pressure 29.91" and rising. |
| 5/31/2011 |
5:13 AM |
0.20 |
0.0 |
M |
0.0 |
M |
As an interesting note, the the amount of precipiation shown in the box above fell within a half hour! Mid afternoon weather for 5/30-a stark difference toward the North compared to that of the South as far as cloud types are concerned. From the NW to the NE, on a mostly cloudy afternoon, Cirrus, Cirrostratus and scattered Cumulus are the main cloud types while to the East scattered Cumulus and a few Cumulus Congestus clouds were observed. A mostly clear sky from the West to the NW (except for scattered Cirrus) while from the West to the South and extending East a very large cloud deck looked moderately threatening. Temperatures are in the upper 60's to low 70's along with a light breeze from the NW. Current conditions for 5/31-overcast with scattered low clouds, light haze, and minimal air movement. It is from the WNW at 3 mph, then from the West at 2-4 mph, wind gust: out of the NW to 10 mph, humidity 88%, dew point 48° {yesterday, the readings were 57% and 39° respectively}, current snow level 6500' [yesterday, it was 5500'], ot temperature 53.8°, and the barometric pressure 30.06" and rising. Here are some interesting EOM stats for May: 1) total rain: 1.95" or 382% of average, 2) number of days with no precipitation: 20, 3) high BP: 30.41" on 5/04, 4) low BP: 29.54" on 5/15, 5) date with low BP and no precipitation: 29.80" on 5/11, 6) date with high BP and precipitation: 30.26" on 5/03 {0.01}, 7) average BP: 29.96", 8) average morning temperature: 50.3°, 9) high morning temperature: 61.3° on 5/21, and 10) low morning temperature: 41.5° on 5/01. |
| 6/1/2011 |
5:03 AM |
0.14 |
0.0 |
M |
0.0 |
M |
As a note, the first storm produced 0.02" while the remainder came from the second one. The GOES West water vapor loop image beautifully illustrates weather activity in the PNW (WA, OR, and central CA). One of the "players" is a high pressure ridge , tilting in a NW direction, over MT, WY, and CO with its apex extending NW into SE Alberta and SW Saskatchewan as it is between a low pressure system (sagging from Quebec into the mid West) to the East and a trough containing an upper level low circulating in a general SW to NE pattern from just off the NW CA coast to most of Vancouver Island and Western WA on the West coast. Meanwhile, the Southern portion of the upper level low, is moving/swinging inland near the Bay area (CA), and as it does so, forces a thin band of clouds up the steep East side of the trough or West side of the high pressure ridge (mentioned above) across central CA into NW NV, extreme Eastern OR, central ID (South of the panhandle) NW MT, and Southern Alberta before turning NE {quite possibly cresting the ridge of high pressure} into SW Saskatchewan. Mid afternoon weather for 5/31-another similar situation to that of yesterday as far as cloud types are concerned with Altostratus and scattered Cumulus from the NW to the NE while in the East scattered Cirrus and Cumulus were observed. From the NW to the South and moving East however, was a very large ominous cloud deck that consisted of a thicker Altostratus cloud type accompanied by very dark lower level Cumulus. In addition,lightning was seen and peals of thunder were heard! Temperatures are in the mid to upper 60's along with a nice breeze from the North and occasionally from the NW. Conditions for 6/01-a Nimbostratus overcast in the form of light rain, and minimal air movement. It is from the WSW at 3-4 mph, wind gust: out of the NW to 12 mph, humidity 79%, dew point 45°, current snow level 4500' [yesterday, it was 6500'], ot temperature 53.1°, and the barometric pressure 30.05" and rising. |
| 6/2/2011 |
5:19 AM |
0.06 |
0.0 |
M |
0.0 |
M |
As an interesting note, a trough diving South down the borders of the Yukon and NW Territories toward BC (and most likely bringing much cooler air with it) is pushing a band of clouds ahead of it into Northern BC and NW Alberta. This is a result of a large upper level low NE of the NW Territories in the arctic region near the Arctic Circle. Meanwhile, yesterday's trough that contained an upper level low and circulated in general SW to NE pattern from just off the NW CA coast to most of Vancouver Island and Western WA, has dispersed, and what remains, is a trough sagging South of WA/OR into Northern CA before turning SE into Southern CA, NV, and NW AZ as it moved East or inland from yesterday's location (mentioned above) and with water vapor (from GOES West water vapor loop image)attempting to ride up the near vertical East side of the trough or West side of a strong ridge of high pressure that is in a slight NW tilt over MT, the Dakotas, MN, NE and Iowa with its apex extending North into Saskatchewan and Manitoba (just South of the NW Territories border. Current conditions for 6/02-partly cloudy skies, light haze and light wind velocities; although, they have picked up in the last few minutes. They are from the WNW at 4-5 mph, wind gust: out of the WNW to 18 mph, humidity 55%, dew point 38° {yesterday, the readings were 79% and 45° respectively}, current snow level 4000', ot temperature 56.7°, and the barometric pressure 29.95" and falling. |
| 6/3/2011 |
5:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The trough that yesterday was diving South down the NW Territories/Yukon borders toward BC, has moved East and is now moving into Northern Alberta and Saskatchewan with clouds streaming ahead of it from NW BC into central Alberta. As mentioned yesterday, this is a result of a large upper level low in the arctic region well above the Arctic Circle. Meanwhile, in the PNW, a very interesting situation exists. A small trough containing a relatively small upper level low circulating in a NW to SE pattern with a slight SW sag and adjacent mainly to WA is situated in the NW "corner" of a much larger trough which sags South into Northern CA; although, the remainder of the trough sags further South into both Southern CA and Baja. Currently, the upper level low (mentioned above) is moving South by SE down the East side of a surface high pressure (with its apex well to the SE and South of the inner Aleutians and the Southern Gulf boundary respectively) and looks to be ejecting a weak wave into Northern and central CA {GOES West Water Vapor loop image). Behind this surface high pressure, is an immense upper level low circulating in a general SE to NW pattern from SE of the inner to middle Aleutians well into the interior of the Chukchi Peninsula, Russia. Mid afternoon weather for 6/02-scattered Cirrus, Altostratus and an abundance of scattered Cumulus on a partly cloudy, though pleasant spring afternoon. Temperatures are in the upper 60's to low 70's along with a brisk breeze and gusts from the NW. Current conditions for 6/03-scattered Cirrus, Cirrostratus and Cumulus on a very pleasant spring morning. We have light haze, no precipitation in the last 24, and minimal air movement. It is from the West at 4 mph, then from the WSW at 3 mph, wind gust: out of the NW to 14 mph, humidity 53%, dew point 38°, current snow level 4500', rising to 6000' later this afternoon. Ot temperature is 53.1°, and the barometric pressure 30.15" and rising. |
| 6/4/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since there is no high pressure directly over WA, what is responsible for the beautiful weather? The trough, that two days ago was diving South down the Yukon/NW Territories border toward BC, has since moved well East as it now approaches the NW border of Ontario; although, the West side of this trough continues to affect the NW quadrant of Alberta, Northern Saskatchewan and Manitoba. In addition, the clouds ahead of it are moving East by SE along the Southern borders of BC, Alberta, Saskatchewan and Manitoba as immediately South is a large swath of dry air from WA to MT (1st possibility). In the PNW (specifically BC), some minor ridging is over SE AK and the Queen Charlottes in NW BC, with its apex extending just beyond the Yukon's Southern border. Although this minor ridging is not directly over WA, it is close enough to be influential (2nd possibility). The "forecast area is between the polar storm track to the North over Canada, and a cut-off low to the South near CA resulting in a dry and sunny day today" (3rd possibility). So, it would appear that by combining these three possibilities accounts for the beautiful weather. Current conditions for 6/04-clear skies (except for some Cirrus from the South to the SE), light haze, no precipitation in the past 24, and minimal air movement. It is however, from the WNW at 5 mph, then from the NNW at 3 mph, wind gust: out of the NW to 14 mph, humidity 61%, dew point 40°, current snow level 11,000' (the first venture into a five digit "freezing level" for 2011!), ot temperature 53.5°, and the barometric pressure 29.99" and rising. |
| 6/5/2011 |
5:07 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The wide swath of dry air that yesterday extended from WA to MT, and was a contributor to beautiful weather in the "forecast area" has since migrated North (now but a narrow river) and is now flowing over NW WA into SE BC, Southern Alberta and Saskatchewan before turning SE across the SW corner of Manitoba, NE ND and into MN. In its place, moisture has moved up from the South. Meanwhile, the upper level low (with its center adjacent to Monterey Bay and circulating in a general circular pattern) that yesterday was just nudging NW CA with its outer bands, they moved inland and in the process ejected clouds Northward into Northern CA, Western NV, OR and the Southern half of WA. So, it is quite possible that this moisture (mentioned above) has contributed to the cloud cover over this area. Nonetheless, WA continues to be "sandwiched in between the main polar storm track over Southern Canada (an upper level low circulating in a general SE to NW pattern from Western Hudson Bay into the Nunavut "Province" with a SE sag into NE Ontario and SW Hudson Bay. In addition, there is a NW flow across BC, Alberta, and Saskatchewan) and a stationary deep upper level low off the CA coast". Mid afternoon weather for 6/04-except for a small area of Cirrus in the West, we have clear skies on a summer-like spring afternoon with temperatures in the mid to upper 80's and light winds mainly from the South and SW but occasionally from the East. Weather conditions for 6/05-a mid level overcast (except for some partial clearing to the South), light haze, no precipitation during the overnight, and minimal air movement. It is from the West at 2 mph, then from the WNW at 6 mph, wind gust: out of the NNW to 17 mph, humidity 56%, dew point 40°, current snow level 10,000' [yesterday, it was 11,000], ot temperature 54.5°, and the barometric pressure 29.82" and falling. |
| 6/7/2011 |
5:05 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Some dynamic weather is occurring in or near the PNW today. The clouds associated with yesterday's upper level low (circulating in a SE to NW pattern from Southern to NW CA) first moved North, then East by NE into MT, SE BC, Southern Alberta and Manitoba and SW Ontario, and at this juncture are well laden with moisture. A relatively small trough is sagging South of MT into Northern WY and NW SD with a small, circular upper level low situated in SE MT which is very close to the borders of SW ND and Northeast SD. Immediately to the NW of this trough, is a transient minor ridge with its apex extending NE to the Southern border of BC and Alberta. This is followed by another shallow trough sagging SW of Vancouver Island into Western WA. Within this trough is an upper level low that yesterday, was a low pressure in SE AK (the NW portion of BC) but is now circulating in a SW to NE pattern from NW WA/Victoria, BC area to the Williams Lake, BC region. There are indications however, that this upper level low will move SE over WA later today or sometime tomorrow morning. Behind this trough is a ridge of high pressure extending North along the West coasts of SE AK (mentioned above)and the Queen Charlottes with its flat apex extending further North into the state of SE AK and the Southern portion of the Yukon. Current conditions for 6/07-mostly clear skies (except from the North to the NE and in the West), light haze, no precipitation in the last 24, and some actual wind velocities. They are from the West at 6-9 mph, wind gust: out of the NW to 20 mph, humidity 47%, dew point 43°, current snow level 7500', ot temperature 65.5°, and the barometric pressure 29.63" and falling. |
| 6/8/2011 |
5:10 AM |
0.22 |
0.0 |
M |
0.0 |
M |
Yesterday's trough (with a SW sag into NW WA and Vancouver Island) and the upper level low within it, circulated in a SW to NE pattern from the areas just mentioned above to the Williams Lake region in BC, has moved SE with the trough continuing to sport a SW sag, though now into NE CA, Northern NV, and NW UT. The "outer band" of the upper level low, is circulating in a general North/South pattern from the Eastern OR/Western ID border to Southern BC and the SW corner of Alberta. It is believed however, that the center of this upper level low is located near the center of the state (WA) and not the SE quadrant. How? Both the UW NW IR and NW Radar Loop images place the center near the Ephrata/Moses Lake area. The main body is moving East by NW (while the "tail section" is moving East along the Southern ID border) through Western MT (along its Western border) into the SE quadrant of BC, and the Northern panhandle of ID. From here, it extends NW across Sandpoint,ID and Newport, WA to just East of the Tonasket/Omak area before turning SW toward Brewster and Bridgeport. The return flow is bearing South from Mt Vernon to Tacoma before turning SE across Yakima and Goldendale into the Wasco/Arlington area of OR. It is quite possible that this upper level low was responsible for the late night, early morning precipitation at this site anyway. Current conditions for 6/08-mostly overcast (with partial clearing in the East and West), light haze, and light wind velocities. They are from the WNW at 6-10 mph, wind gust: out of the WNW to 19 mph, humidity 81% {yesterday, the reading was 47%}, dew point 44°, current snow level 6000' [yesterday, it was at 7500'], ot temperature 52.7°, and the barometric pressure 29.81" and rising. |
| 6/9/2011 |
5:02 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The 0.22" recorded yesterday was in the early morning as indicated below. Since then, another 0.24" was recorded during the day for a grand total of 0.46". The upper level low that yesterday was over central WA (Ephrata/Moses Lake area) has since move SE near the vicinity of Idaho Falls with its center moving East toward the ID/WY border. However, looking at both the Conus Water Vapor and GOES West Water Vapor Loop images, show a narrow river of dry air moving down the middle of WA in a North/South flow before turning SE (just East of The Dalles) into the desolate and arid SE quadrant of OR and NE NV. In addition, there appears to be a fair amount of water vapor on either side of the "river" (mentioned above) in both WA and OR. Behind this (the water vapor), is a bank of clouds moving East by NE {with the appearance of a low pressure system, though apparently with no counterclockwise rotation} across the Queen Charlottes and Vancouver Island (except for the SE portion) into North central BC with the middle portion approaching the WA and OR coasts. Upon looking at the satellite images of the Gulf region, it becomes readily apparent that "everything" is moving East by NE toward BC. This is because the direction just indicated, is congruous to both the NPJ and wind charts [East by NE]. Mid afternoon weather for 6/08-a Nimbostratus overcast in the form of a light rain. Temperatures are in the low to mid 60's along with minimal air movement. Conditions for 6/09-Quite a contrast to yesterday, with partly cloudy skies (all Cumulus), light to moderate haze, and minimal air movement. It is from the WSW at 4 mph, then from the West at 3 mph, wind puff: out of the WNW to 6 mph, humidity 86%, dew point 48°, current snow level 8500' [yesterday, it was 6000'], ot temperature 52°, and the barometric pressure 29.97" and rising. |
| 6/10/2011 |
5:37 AM |
T |
0.0 |
M |
0.0 |
M |
There is a ridge of high pressure in a NW tilt over Alberta and Saskatchewan with its apex just nudging across the border of the former province into the Southern NW Territories. "Underneath" this high pressure, is a weak surface high over Southern and SE ID as well as WY (except for the NE quadrant) with its apex extending into MT near the Great Falls region. Why were these two dynamics briefly discussed? Because, it appears that both the NPJ and upper level winds are in a split flow with some of the energy going into BC {with a trough sagging SE near the Fort St. James region NW of Prince George and a low pressure system adjacent to the high pressure mentioned above in NE BC just South of the NW Territories border {This can be viewed on both the GOES West Longwave IR and AK IR Loop images} and the rest into SW OR and central CA. Meanwhile, yesterday's band of clouds with no apparent counterclockwise rotation and with the middle portion approaching WA and OR, has moved inland into Eastern OR, WA , all of ID (except for the SE) before extending North into SE BC and SW Alberta (near the Jasper region). Current conditions for 6/10-mostly cloudy skies though there are two large areas of clearing one being in the West and the other toward the South to the SE. in addition, we have moderate haze and some air movement. It is from the WNW at 5 mph, then from the West at 2 mph, wind gust: out of the NW to 12 mph, humidity 64% (yesterday, the reading was 86%), dew point 46°, current snow level 7500' [yesterday, it was 8500'], ot temperature 59°, and the barometric pressure 29.86" and rising. |
| 6/11/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
This morning, there is a shallow trough with a SE sag across WA (from Western WA into the NE corner near the Metaline Falls area) with another one sagging South of OR into North central CA, NV (except for the SE portion) and NW UT. This is derived by the GOES West Longwave IR Loop image as clouds of the mid and high level type are moving East by NE across WA (and the areas mentioned above) into SE BC and SW Alberta. As far as OR is concerned, a small portion of clouds are moving East by SE across SW OR, while a larger constituent is moving East. Why? First, it would appear that both the upper level winds and NPJ are South of OR except for the SW, and consequently, there is no "flow" or push to move anything. Second, because there is no "flow" across OR, and these clouds appear to be weakly attached to the clouds moving in an East by SE direction into North central CA (SE of the Bay and Lake Tahoe areas), would at least suggest that there was no alternative but to move East. In addition, there appears to be sufficient water vapor over the PNW (except for Southern CA). Mid afternoon weather for 6/10-partly cloudy skies with some Altocumulus from the North to the SE, scattered Cumulus from the NW to the South and two non-threatening moderate sized cloud decks (Cumulus) with one in the West and the other in the South. Temperatures are in the mid 70's along with little to no air movement. Current conditions for 6/11-partly cloudy skies (mainly of the mid and high level type in addition to widely scattered Cumulus), light to moderate haze, no precipitation in the last 24, and very little air movement. It is from the NNW at 7 mph, wind gust: out of the WNW to 14 mph, humidity 53% {yesterday, the reading was 64%}, dew point 40°, current snow level 7000', ot temperature 57.4°, and the barometric pressure 29.72" and falling. |
| 6/12/2011 |
5:30 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Once again, a situation exists where there is no high pressure over WA, yet this region is enjoying a beautiful late spring morning with clear skies (except for a few wispy clouds to the South and West)and minimal air movement. How then, did this beautiful weather come about? Yesterday, there was a large pear-shaped area of dry air extending from the SE and SW corners of AK and the Yukon respectively to just off the NW CA coast. Behind this was a medium sized "wave" and as it moved East, it pushed the large area of dry air (mentioned above) ahead of it into WA, OR and CA. So, it would appear that this large area of dry air is responsible for the lovely, late spring weather (this can be observed on the West Conus NH IR Loop image) for the time being, as a band of clouds are just commencing to come ashore in WA and OR as well as Vancouver Island, central BC and just North of the Queen Charlottes into Southern SE AK. These "directions" into BC are congruous to both the NPJ and the upper level wind patterns {West to East}. In addition, there is sufficient water vapor over the PNW (including BC, WA, OR and most of CA). Mid afternoon weather for 6/11-partly cloudy skies (all Cumulus) except for a small area of Cirrus to the North on a summer-like spring afternoon. Temperatures are in the upper 70's to low 80's along with light winds from the NE though occasionally from the SW. Conditions for 6/12-mostly clear skies with widely scattered high level clouds, light to moderate haze, no moisture during the overnight and minimal air movement. It is from the WNW at 5-6 mph, then from the NNW at 2 mph, wind gust: out of the NW to 15 mph, humidity 50%, dew point 38°, current snow level 8500' [yesterday, it was 7000'], ot temperature 59.4°, and the barometric pressure 29.68" and falling. |
| 6/13/2011 |
5:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday's "wave" (that was parked just off the central BC, WA, and OR coasts and responsible for the lovely late spring weather in this area, has moved East of the region due in part to a relatively short river of drier air moving East by NE across central BC, WA and the Northern tier of OR. This is immediately followed by a "trough" of dry air barrelling across NW WA in a East by SE direction which, like a plow, is forcing the drier air (mentioned above) and the clouds ahead of it in a NE direction. The other contributors would be the NPJ and the upper level winds as they are in a SW to NE flow over SW and North central BC. In addition, it appears that the NPJ is in a split flow with some of the energy going into BC {over the areas just mentioned above} and the rest into OR and CA. Mid afternoon weather for 6/12-on a pleasant spring afternoon, we had quite a variety of cloud types including scattered Cirrus, Cirrostratus, a small area of what appeared to be Cirrocumulus, a large deck of Altocumulus moving in from the West and scattered lower level Cumulus. Temperatures are in the upper 70's to low 80's along with little or no air movement. Current conditions for 6/13-partly cloudy skies (all Cumulus), light haze, no precipitation in the last 24, along with some air movement. It is from the NNW at 4-5 mph, wind gust: out of the NW to 14 mph, humidity 54%, dew point 44°, current snow level 7500' [yesterday, it was 8500'], ot temperature 63.1°, and the barometric pressure 29.68" and falling. |
| 6/14/2011 |
5:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The West Coast and WA Visible satellite images show overcast skies over and West of the Cascades in WA and OR (except for the SW corner), while East of the Cascades, clear skies prevail in OR and WA (except for scattered clouds in the SE and especially
Stevens and Pend Oreille counties of NE WA). In addition, it appears that clouds are commencing to nudge the Western boundary of Chelan county. Just off the coast of WA, a minor ridge of high pressure is currently over Vancouver Island with indications of moving East over Southern BC, WA and OR later today. NW of its apex (the minor ridge mentioned above) is a low pressure system just North of the Queen Charlottes with another one located East of Prince Rupert in the Terrace-Kitimat locales of BC. This is followed by a "trough" adjacent to BC and WA moving East by SE, with the leading edge moving across SE Vancouver Island into NW WA. Behind this is a band of clouds associated with the low pressure (mentioned above) followed by the leading edge of drier air moving into NW Vancouver Island while the main body is taking aim at WA (This can be viewed on the GOES West Longwave IR and Water Vapor Loop images). Mid afternoon weather for 6/13-another very pleasant spring afternoon with partly cloudy skies (all Cumulus), temperatures in the upper 70's to low 80's and light wind velocities from the SW. Current conditions for 6/14-clear skies {except for some scattered Cirrus to the NE}, light haze, no precipitation in the last 24, and some light wind velocities. They are from the WNW at 4 mph, from the West at 6 mph, then from the NNW at 3 mph, wind gust: out of the NW to 15 mph, humidity 46%, dew point 37°, current snow level 7000', ot temperature 56.3°, and the barometric pressure 29.98" and rising. |
| 6/15/2011 |
5:10 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Here is something to ponder: why are the clouds moving NW across Northern Alberta into the NE quadrant of BC? A large storm is moving East by NE across IL, IN, OH, KY, MI, and WI. Believe it or not, the clouds associated with this storm are moving NW across most of MN (except for the SW quadrant), Eastern ND, Southern Manitoba, SE to North central Saskatchewan and finally into the two Western provinces as indicated above (This can be viewed on the GOES West/East Longwave IR Loop images). Meanwhile, closer to home, the WSDOT satellite image shows a varying degree of cloudiness from mostly cloud covered over and West of the Cascades to scattered clouds in Eastern WA with the central to Southern counties experiencing mostly clear skies including Chelan, Kittitas, Yakima, Klickitat, Douglas, Grant and Benton. The NPJ is in a NW flow over WA with a shallow trough sagging just across the BC border into Northern WA while the upper level wind chart is showing a similar pattern though with an upper level low circulating in a SW to NE pattern from NW Vancouver Island, to the Prince George locale in BC. Mid afternoon weather for 6/14-on a pleasant late spring afternoon, scattered Cirrus, a lengthy band of Altocumulus from the SW to the NE before turning North by NW, scattered Altocumulus Undulatus in the East, and widely scattered lower level Cumulus. Temperatures are in the mid to upper 70's along with light air movement from the North and NW. Current conditions for 6/15-partly cloudy skies (all Cumulus), light haze, no precipitation in the last 24, and some actual wind velocities. They are from the West at 7 mph, then from the WNW at 9 mph, wind gust: out of the West to 26 mph, humidity 45%, dew point 35°, current snow level 4500' [yesterday, it was 7000'], ot temperature 56.7°, and the barometric pressure 29.88" and rising. |
| 6/16/2011 |
5:58 AM |
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Mid afternoon weather for 6/15-with just six days before the start of summer, the skies are mostly clear except for two large cloud bands (all Cumulus) one of which is from the West to the South, and the other from the North to the SE (it was this band where some Cumulus Congestus were observed in the East). Both of of these bands were near the ridge tops and higher summits around the valley. Temperatures are in the low to mid 70's along with breezy winds from the NW along with gusts from the North and NE. Current conditions for 6/16-earlier this morning, scattered clouds prevailed in the South and NE; however, from the South to the West then extending to the NE, were barely visible and unfamiliar Cirrus clouds in the form of lengthy and narrow "streets". Conditions for 6/16-partly cloudy skies (scattered Cirrus, Contrails and Cirrostratus in the South, a small area of scattered Altocumulus in the West and a large band of the same from the NW to the East), light haze, no moisture during the past 24, and light wind velocities. They are from the West at 7-8 mph, wind gust: out of the NW to 18 mph, humidity 47%, dew point 37°, current snow level 7500' [yesterday, it was 4500'], although by early next week, the freezing level is forecast to be near 11,000' as a ridge of high pressure moves in over the area for a relatively brief period of warmer and drier weather. Ot temperature 58.3°, and the barometric pressure 29.83" and falling. |
| 6/17/2011 |
5:14 AM |
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Believe it or not, another large storm (similar to the one on 6/15) is moving East by NE across MN, IN, and MO; however, the clouds associated with it are now moving up the Western Dakotas in a Northerly direction (instead of a NW direction as was the case two days ago) into Southern Saskatchewan and from Eastern MT into SW Saskatchewan before turning WSW into Alberta. The Northerly direction is congruous both to the NPJ (S to N) and the upper level wind charts. Now why was this storm mentioned? Because it affects the weather in WA though indirectly. How? There is an upper level low circulating in a general SE to NW pattern from SW WY to Northern Alberta, with the center located in the SE quadrant of Alberta and also circulating in a similar though much smaller pattern (SE to NW). As a result, the clouds associated with the upper level low are moving SE adjacent to the BC/Alberta border into the NE quadrant of WA, Northern ID and NW MT (near the MT/ID border). Mid afternoon weather for 6/16-scattered clouds of various sizes and shapes including Cirrus, several Altocumulus Lenticularis both in the South and West, what appeared to be "wind-blown" scattered Cumulus cloud decks in addition to lower level Cumulus. Temperatures are in the low to mid 70's along with winds out of the West and North. Current conditions for 6/17-clear skies (except for some scattered high level clouds from the NE to the East), light to moderate haze, no precipitation in the last 24, and light wind velocities. They are from the West at 6 mph, then from the WNW at 2 mph, wind gust: out of the WNW to 14 mph, humidity 53%, dew point 40°, current snow level 9000'[ yesterday, it was 7500'], ot temperature 56.8°, and the barometric pressure 29.73" and falling. |
| 6/18/2011 |
5:37 AM |
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Although yesterday's very large storm that was moving East by NE across MN, IN, and MO, is no longer affecting the weather in this area (WA), it still bears watching as it is an intriguing weather phenomenon (it is visible on the GOES West/East Longwave and Water Vapor images). Without going into detail of all the area this storm covers, the focus will be on the ull. This upper level low is circulating in a slight SW to NE pattern close to the Saskatchewan/Manitoba border and adjacent to the SW Alberta/BC border with its center located near the Saskatoon area of Saskatchewan. The center and its pinpoint "eye", are clearly visible on the sites mentioned above. In addition, the outer bands associated to the "center", are moving simultaneously South by SW toward the Alberta/MT and Alberta/BC borders respectively. Meanwhile, the combination of upper level winds and the NPJ are pushing a portion of dry air in an East by SE direction over Vancouver Island into NW WA (Olympic National Park area). This action is forcing a wave ahead of it into WA, OR and most of ID in an Easterly direction. The UW NW Radar site is showing a lot of moisture moving from West to East including a small piece of energy that moved quickly across this area (Wenatchee) and resulted in a trace of precipitation. Conditions for 6/18-overcast skies (and what appears to be an Altostratus overcast with scattered lower level Cumulus and cloud decks), light haze, and light wind velocities. They are from the NNW at 3 mph, then from the West at 2 mph, and then from the WNW at 9 mph, wind gust: out of the WNW to 20 mph, humidity 65%, dew point 46° [yesterday, the readings were 53% and 40° respectively], current snow level 8500', ot temperature 63.7°, and the barometric pressure 29.64" and falling. |
| 6/19/2011 |
5:08 AM |
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Upon first glance at the satellite image of WA and OR, it would appear that these states are enjoying clear skies and pleasant weather. Such is not the case as closer observation of WA anyway, reveals mostly overcast skies over and West of the Cascades except from the SE to NW in Eastern Jefferson, Clallam, and NW Mason counties of NW WA where scattered clouds prevail. However, East of the Cascades, either clear skies or partly cloudy conditions dominate the middle third of WA. Meanwhile, the saga continues about "the storm" in Canada as the upper level low continues circulating in a slight SW to NE pattern from just South of the Alberta/Saskatchewan border into Northern MT (near Havre) to just West of the Alberta/BC border (NE of Prince George) with its center located near the Kindersley area (SW of Saskatoon). SW of this upper level low, is a ridge of high pressure, tilting NE over Vancouver Island and WA with its apex extending into SW BC. Mid afternoon weather for 6/18-somewhat improved weather (with mostly cloudy skies although partial clearing was observed in the West to the NW and in the NE to the East) since earlier today when the skies were overcast. Temperatures are in the low to mid 70's along with some air movement from the NW. Current conditions for 6/19- clear skies, light haze, no precipitation in the last 24, and light wind velocities. They are from the West at 7 mph, then from the WNW at 5 mph, wind gust: out of the NW to 16 mph, humidity 50%, (yesterday, it was 65%), dew point 42°, current snow level 9500'{and the forecast is calling for these levels to continue rising. By Tuesday/Wednesday of next week, it should peak near 12,000' before a downturn and cooler weather commence late next week}, ot temperature 60.4°, and the barometric pressure 29.76" and rising. |
| 6/20/2011 |
5:27 AM |
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Although clear skies prevail in this area, a satellite image of WA shows extensive cloud cover over and West of the Cascades except for Western Clallam and Jefferson counties of NW WA, where scattered clouds are the prevailing variety. East of the Cascades however, clear skies dominate except for scattered clouds along the Northern, Eastern, and SE boundary counties of WA. Meanwhile, a broad and somewhat lengthy "river" of drier air is flowing in a NW to SE pattern from NW BC (down the entire province) into Eastern WA, Northern ID, and North Western MT. Immediately to the SW, is another band of similar length, though not as wide, moving East by SE and coming ashore in central BC between the Queen Charlottes and North Western half of Vancouver Island. Also moving East by SE is a long band of water vapor coming ashore over SE Vancouver Island into SW BC and WA. As it does, the Southern portion of the drier air was forced from its former location (mentioned above) into Western MT, NW WY, and along the North Eastern ID and Western MT border respectively. Mid afternoon weather for 6/19-widely scattered clouds (Cumulus) except for a lengthy and somewhat broad cloud deck (also Cumulus!) from the SW to the SE. Temperatures are in the upper 70's to low 80's along with a nice breeze from the North and occasionally from the NW on a simply lovely late spring afternoon. Current conditions for 6/20-clear skies (not a cloud in the sky!), light haze, no precipitation in the last 24, and minimal wind velocities. They are from the WNW at 3 mph, then from the West at 2 mph, wind gust: out of the WNW to 14 mph, humidity 52%, dew point 42°, current freezing level 11,500' [yesterday, it was 9500'], ot temperature 57.9°, and the barometric pressure 29.78" and rising.
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| 6/21/2011 |
5:28 AM |
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By way of a preface to the main discussion, there is an intriguing weather phenomenon taking place in the mid West in the form of an intense storm with its center covering a considerable area including NW IA, SW MN, Eastern and SE SD. To the SE, is what looks to be yet another intense storm (due to clouds "blowing up" in East TX, AR, LA, and MO) moving East by NE. Meanwhile, yesterday's broad and somewhat lengthy "river" of drier air that flowed in a NW to SE pattern down the entire province (BC) into Eastern WA, Northern ID and North Western MT, continues to flow in the same pattern (mentioned above) but now across BC into NW to SE Alberta, then SE into Eastern MT. This action is due to a lengthy band of water vapor riding up and over the high pressure ridge {currently over the PNW including WA, OR, ID and even CA!} into Southern Vancouver Island, Southern BC, WA, Northern ID, and Western MT. Acting as a plow, it shoves the Southern portion of the drier from yesterday's location (mentioned above) into Eastern MT and simultaneously compressing it as it encounters the outer fringes of the intense storm (also mentioned above). Mid afternoon weather for 6/20-on the last day of spring, a lengthy band of Cirrus from toward the South to the North along with a much smaller area of the same in the NE and West. Otherwise, widely scattered Cumulus on a gorgeous afternoon with temperatures in the low to mid 80's and little to no air movement. Current conditions for 6/21-clear skies except for some high level clouds to the NE, light haze, no precipitation in the last 24, and minimal air movement. It is from the WNW at 7-8 mph, then from the NNW at 3 mph, wind gust: out of the NW to 16 mph, humidity 51%, dew point 43°. current freezing level 11,500', ot temperature 61.2°, and the barometric pressure 29.83" and rising. |
| 6/22/2011 |
5:09 AM |
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A very large trough consisting of water vapor (visible on the GOES West Water Vapor Loop image) is moving East by SE with the apex of the NW side moving East across SW AK and from Kodiak Island to the Kenai Peninsula before turning SE (this would be down the East side of a moderate ridge of high pressure with its apex just South of the inner Aleutians) then gradually NE into central BC and Vancouver Island. (This pattern is congruous to both the NPJ and the wind charts-SW to NE). In this same locale, an upper level low is circulating in a general North/South pattern from being adjacent to WA to nudging the SW and SE border of the Yukon and AK respectively with the center located just West of SE AK and NW of the Queen Charlottes. Could this be the "kicker" that moves the high pressure ridge {still over the PNW including WA, ID, OR, and CA; although East of yesterday's location} East of this area or region? There are indications that the trough containing the upper level low is going to shift NE into North Western WA sometime tomorrow at which time the high pressure will be over MT with its apex extending North into SE Alberta and Southern Saskatchewan. So, the short answer to the question (asked above) would be yes. Mid afternoon weather for 6/21-mostly clear skies, except for scattered high level clouds (Cirrus, some Cirrocumulus and Cirrostratus). Interestingly, no Cumulus were observed. Temperatures are in the mid to upper 80's along with a nice breeze from the South, though occasionally from the East and finally coming out of the SE. Current conditions for 6/22-it would appear that a Cirrostratus overcast is in progress, light haze, no precipitation in the last 24, and little to no air movement. What we do have, is from the WSW at 3 mph, then from the WNW at 4 mph, wind gust: out of the WNW to 14 mph, humidity 53%, dew point 45°, current freezing level 11,000, ot temperature 61.2°, and the barometric pressure 29.75" and falling. |
| 6/23/2011 |
5:10 AM |
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Yesterday's lengthy and almost pencil thin band that was in a SW flow over the NW corner of OR into SW WA before turning North (very likely near the Cascade crest) into BC, has shifted well to the SE; however, it still remains in a SW flow, but now over NW CA, Southern to NE OR, the panhandle of ID and NW MT before turning North by NE into BC along the BC/Alberta border. It would appear that scattered rain showers accompany this band in the areas just mentioned except for NW CA and Southern to NE OR (this was viewed courtesy of the UW Atmospheric Sciences on the IR Satellite and NW Radar Loop images). Meanwhile, the trough consisting of water vapor, has moved East by NE of yesterday's location into NW WA with the driest air over the middle third of WA (one of the contributors to our nice weather, the other being a ridge of high pressure though not directly over WA, is close enough to be influential) before turning SW across the Hermiston, OR area into Brookings. Acting as a plow, this dry air {moving East by SE} is forcing the band {mentioned above} in the same direction. Mid afternoon weather for 6/22-a thicker Cirrostratus or Altostratus overcast except for some partial clearing in the NW and NE. Temperatures are in the mid to upper 80's along with calm winds. Current conditions for 6/23-clear skies, light haze, no precipitation in the last 24, and some nice wind velocities. They are from the WNW at 9-25 mph, then from the West at 10mph, and finally coming out of the WSW at 12 mph, wind gust: out of the WNW to 30 mph, humidity 37%, dew point 33° [yesterday, the readings were 53% and 45° respectively], current snow level 5500' [yesterday, it was at 11,000'], ot temperature 62.4°, and the barometric pressure 29.67" and falling. |
| 6/24/2011 |
5:37 AM |
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The high pressure that gave us a warm day last
Tuesday (6/21), and was influential in a nice day yesterday (6/23), is now over Eastern MT and the Dakotas with its apex extending North into Southern Saskatchewan and SW Manitoba. NW of the high pressure is a trough literally lying on its side with the sag extending East beyond BC/Alberta and the Southernmost part near the Saskatchewan border. The Northern side of this trough is adjacent to the Yukon/BC border while the SW side is sagging across the SW corner of Alberta, NW MT, the Northern panhandle of ID and from Eastern WA (likely the Spokane area) to SW WA. Contained within this trough is an egg-shaped upper level low with its center located in the SW Vancouver Island/NW WA area. However, some weather appears to be occurring in Northern BC and Alberta before extending SE across Saskatchewan into SW Manitoba and finally taurning in a Southerly direction into both Eastern NE and the Dakotas. Immediately SW is a narrow river of drier air moving East by NE across the same provinces mentioned above (except for BC) before turning South into Western ND, SD, and NE. Mid afternoon weather for 6/23-clear skies on a cool summer afternoon except for scattered clouds (all Cumulus!) in the NW and from the West to the SW. Temperatures are in the low to mid 70's (about 10-15 degrees cooler than yesterday at this time) along with light to moderate winds from the NW though occasionally from the West. Conditions for 6/24-mostly clear skies (scattered Cirrus and Cumulus),light haze, no precipitation during the overnight, and light winds. They are from the NNW at 7 mph, then from the WNW at 13 mph, wind gust: out of the NW to 17 mph, humidity 48% [yesterday, it was 37%], dew point 37°, current snow level 5500', ot temperature 55.9°, and the barometric pressure 29.85" and rising.
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| 6/25/2011 |
5:32 AM |
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Overcast skies prevail over and West of the Cascades in Whatcom, Skagit, Snohomish and King counties while West and South of the Puget Sound region ranges from mostly clear to partly cloudy skies. Except for some scattered clouds in Ferry, Stevens and Pend Oreille counties East of the Cascades, clear skies prevail (including Southern and SE Chelan county). However, from central Chelan county to NW Okanogan county is a whole different ballgame as overcast skies rule because of what appears to be a moderate piece of energy moving SW just past Vancouver Island then simultaneously turning in a South by SE direction "down" the island just mentioned into the NW quadrant of WA. Moving SE, light showers associated with this energy seem to be falling over and SW of the Vancouver Range as well as in the Strait of Georgia near Nanaimo. East of Vancouver, showers seem to be "parked" over the Coquitlam area while in WA, scattered showers are moving East through the Everett/West Lake Stevens region. Mid afternoon weather for 6/24-partly cloudy skies with increasing cloudiness (all Cumulus) since earlier this morning when we had a mostly clear sky. Temperatures are in the low to mid 70's, BP 29.77" {and rising} along with light air movement from the SW. Current conditions for 6/25-partly cloudy skies (scattered Cirrus, Cirrostratus and Cumulus), light haze, no precipitation in the last 24, and minimal air movement. It is from the SSW at 1 mph, then from the West at 4 mph, and finally from the WSW at 2 mph, wind gust: out of the WNW to 12 mph, humidity 44%, dew point 36°, current snow level 6000', ot temperature 55.2°, and the barometric pressure 29.82" and rising. |
| 6/26/2011 |
5:39 AM |
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Very interesting and at the same time puzzling weather phenomenon is currently taking place in two locations. The first of which is an upper level low circulating in a SW to NE pattern from a SW sag adjacent to North Korea to the Chukotka Russia region, with the center located just South of the outer Aleutians. SW of this upper level low, is what appears to be (but isn't) an immense/huge upper level low {it is so large that it would extend from Northern BC to the inner Aleutians were it located in the Gulf} rotating CLOCKWISE as are the clouds associated with it (1st puzzling weather phenomenon). Meanwhile, what looked to be a shortwave [moving East by NE], followed by a smaller one on its SW flank, is approaching Vancouver Island with the Southern portion of it looking to swing across NW OR into SW WA. However, the only problem is that neither the NPJ nor the upper level winds are flowing or congruous to the direction [East by NE] the shortwave is taking (2nd puzzling weather phenomenon).Mid afternoon weather for 6/25-quite an array of cloud types on a mostly cloudy afternoon including scattered Cirrus, Cirrostratus, some Cirrocumulus Undulatus, Altocumulus and lower level Cumulus. Temperatures are in the low to mid 70's, BP 29.74" (and rising), along with light air movement from the East and NE. Current conditions for 6/26-clear skies, light haze, no precipitation in the last 24, and minimal air movement. It is from the NNW at 1-5 mph, then from the West at 5 mph, wind gust: out of the NNW to 14 mph, humidity 57%, dew point 39°, freezing level 9500' [yesterday, it was 6000'], ot temperature 54°, and the barometric pressure 29.84" and rising. |
| 6/27/2011 |
5:19 AM |
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The upper level low (that isn't) has moved South by SW from yesterday's location, and has come in close proximity with what appears to be a disturbance NW of HI. Is there a possibility that these two entities will merge? Another looming possibility presents itself by way of getting caught up in the NPJ with its (the ull that isn't) East by SE movement. Interestingly, high pressure (currently parallel to the Aleutians with its apex covering the Gulf area except for the East portion near SE AK and evidenced by clouds streaking up the NE side of it) is building over the upper level low (that isn't). Although weak high pressure is over MT, ID, WY, and SE OR with its flat apex extending into Southern Alberta and SW Saskatchewan, a trough sags in a Southerly direction off the WA, OR, and CA coasts with a relatively small upper level low circulating in a slight oblong pattern adjacent to the WA/OR border. Moving East by NE, a system is spreading clouds and light rain across NW OR, WA (the source of cloud cover over this area anyway) SE Vancouver Island and into SW BC. The "heaviest" showers being in the Newport/Lincoln City areas of OR and in the Centralia/Olympia areas of WA, with lighter amounts in the Astoria/Seaside area of OR, Seattle and outlying areas to the East and SE of WA. Current conditions for 6/27-overcast skies (Altostratus with widely scattered lower level Cumulus), light to moderate haze, no precipitation in the past 24, and minimal air movement. It is from the West at 7 mph, then from the WNW at 5 mph, wind puff: out of the NW to 9 mph, humidity 55%, dew point 45°, current snow level 9500', ot temperature 60.6°, and the barometric pressure 29.78" and rising. |
| 6/28/2011 |
5:13 AM |
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The tardiness of the report was due to an urgent situation in the family. Both the NPJ and the upper level winds are in a split flow with some of the energy going into Canada, and the rest into CA in the form of a trough just off the CA coast. As a result, WA is left in a rather quiet weather pattern. Meanwhile, the upper level low has moved South by SE from yesterday's location (near the WA/OR coasts) to just off the CA coast with its outer bands coming ashore in NW CA, and SW OR and the center is now located just off the Northern CA coast. The outer bands coming ashore, forced the low pressure system (with a SW flow across the Bay area then turning North into Northern CA and Southern OR before bearing NW toward the Portland, OR area) East. The rain associated with this lps {low pressure system} is "heaviest" in the Bay area and SW of Red Bluff in the Chico/Oroville area with lighter amounts in the Lakeview, OR region. The clouds associated with the low pressure system are moving North over NW NV, Eastern OR/WA before turning NE into Northern ID and and NW MT. This is congruous to the upper level wind chart as they ride up the steep West side of the high pressure ridge (mentioned above). Mid afternoon weather for 6/27-generally, an Altostratus overcast with scattered lower level Cumulus, temperatures in the upper 70's to low 80's, BP 29.59" (and falling) with minimal air movement from the NE. Current conditions for 6/28-overcast skies {except for some partial clearing from the North to the NE and in the East}, light to moderated haze, and very little by way of air movement. It is however from the WNW at 3-7 mph, wind gust: out of the WNW to 18 mph, humidity 51%, dew point 50°, current freezing level 10,500' [yesterday, it was 9500'], ot temperature 64°, and the barometric pressure 29.49" and falling.
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| 6/29/2011 |
6:03 AM |
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Both the NPJ and upper level winds persist in a split flow with most of the energy going into Canada and the rest into CA in the form of a trough with its Southernmost boundary in Southern CA. The water vapor loop image shows the upper level low circulating just NE of the Bay area and SW of Lake Tahoe. There are indications that by sometime tomorrow afternoon, both the NPJ and upper level winds will be in a zonal flow over WA and OR. This process will help to amplify the building of strong high pressure over the mid West. Yesterday's low pressure system that was in a SW flow across the Bay area then turned North into Northern CA and Southern OR before bearing NW toward Portland, has moved East into NE CA, Western NV, and Eastern OR before turning NE into the Southern panhandle of ID and NW MT. Although some of its strength has been lost, there is still a fair amount of moisture associated with it. Moving North, the "heaviest" rain is NW of Reno near the Lovelock area with lighter amounts in the Lake Tahoe region. In addition, light amounts (also moving North) are falling in the Ontario, OR/Caldwell, ID region and East of Baker City, OR. Mid afternoon weather for 6/28-an Altostratus overcast with partial clearing in the North and NE, and scattered somewhat threatening lower level Cumulus moving in from the West. Temperatures are in the mid to upper 80's, BP 29.41" (and falling) along with little to no air movement. Current conditions for 6/29-clear skies (except for widely scattered clouds in the South, West and from the NW to the North), light haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 10 mph, then from the West at 6 mph, wind gust: out of the NW to 16 mph, humidity 51%, dew point 49° current snow level 9500'[yesterday, it was 10,500'], ot temperature 67.8°, and the barometric pressure 29.50" and falling.
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| 6/30/2011 |
5:30 AM |
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Mid afternoon weather for 6/29-partly cloudy skies (scattered Altocumulus, Altostratus and lower level Cumulus), temperatures are in the upper 70's to low 80's, BP 29.49" (and falling) along with a light breeze mainly from the NW and occasionally from the South. Current conditions for 6/30-clear skies (except for widely scattered Cumulus clouds), light haze, no precipitation in the last 24, and light to moderate wind velocities. They are from the NNW at 9 mph, then from the West at 11 mph, humidity 46%, dew point 37° {yesterday, the readings were 51% and 49° respectively}, current snow level 5500' [yesterday, it was 9500'. However, the forecast is calling for the freezing level to rebound nicely by early next week], ot temperature 58.1°, and the barometric pressure 29.77" and rising. Here are some interesting EOM stats for June- 1) total rainfall: 0.66", or 95.7%of average, 1a) average precipitation from Jan - June: 1.02", 1b) actual average from Jan-June: 0.77", 2) number of days with no precipitation: 24, 3) high BP: 30.15" on 6/03, 4) low BP: 29.49" on 6/28, 5) date with low BP and no precipitation: 29.49" on 6/28, 6) date with high BP and precipitation: 30.05" on 6/01 (0.14"), 7) average BP: 29.80", 7a) average BP from Jan - June 29.99", 8) average morning temperature: 58.4°, 8a) average temperature from Jan - June: 43.2°, 9) high morning temperature: 67.8° on 6/29, and 10) low morning temperature: 52° on 6/09. |
| 7/1/2011 |
5:19 AM |
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While most of Eastern WA is enjoying mostly sunny skies, over and West of the Cascades in Eastern Clallam county, the Northern Puget Sound region, Western and Eastern Whatcom county (a small band of clouds extend from BC into an area just East of the North Cascades National Park near Ross Lake), as well as Western Skagit county, overcast skies prevail. Why? First of all, the NPJ is in a SW flow over the Queen Charlottes, Vancouver Island and central and Southern BC whereas the upper level winds are not only in a SW flow over the areas mentioned above, but also in a zonal flow over WA (just South of the BC border) and OR. Secondly, a wave is moving East by NE across the areas mentioned above with the SE portion of it just nicking NW WA and Eastern Whatcomb county. NW of the "wave" in the Gulf is an upper level low circulating in a general East/West pattern, the Eastern end of which extends past SE AK nudging the extreme NW corner of BC while the North side brushes the SW and SE border of the Yukon and AK respectively. The center of this upper level low is located SW of SE AK and West of the Queen Charlottes. Mid afternoon weather for 6/30-mostly cloudy skies (including Cirrus, Cirrostratus, some scattered Cirrocumulus Undulatus toward the SW, and lower level Cumulus), temperatures in the low to mid 70's along with a nice breeze from the West and NW. Current conditions for 7/01-mostly clear skies (widely scattered high level clouds), light haze, no precipitation in the last 24, and minimal air movement. They are from the NNW at 3 mph, wind gust: out of the WNW to 21 mph, humidity 52%, dew point 40°, current snow level 9000' [yesterday, it was 5500'], ot temperature 57°, and the barometric pressure 29.99" and rising. |
| 7/2/2011 |
5:13 AM |
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The Gulf region is active this morning with a relatively large upper level low circulating in a near circular pattern with the Eastern and NE side affecting both the Queen Charlottes and SE AK, while the Northern side nudges the corners of SE and SW AK and the Yukon respectively. The center of this upper level low is adjacent to SE AK and the Queen Charlottes. The GOES West Satellite water vapor loop image shows a very pronounced trough with a Southern sag (well to the West of the OR/CA border) moving East by NE. Also moving East by NE around the trough to the NW and simultaneously up the West side of a ridge of high pressure to the SE (currently over the PNW including WA, OR and ID with its apex extending NW into Northern Alberta and from central to SE BC) is a lengthy band of "clouds" in a steep SW flow across Vancouver Island (except for the South Eastern portion) and the Southern Queen Charlottes into South central BC. The steep flow {mentioned above} is congruous to both the NPJ and the upper level wind chart (SW to NE). Mid afternoon weather for 7/01-clear skies (except for some widely scattered clouds), temperatures are in the upper 70's to low 80's, BP 29.88" (and rising) along with minimal air movement. Current conditions for 7/02-clear skies, light to moderate haze, no moisture during the overnight, and minimal air movement. It is from the West at 2-3 mph, wind gust: out of the NNW to 13 mph, humidity 58%, dew point 45°, freezing level 11,500' [yesterday, it was 9000'], ot temperature 57.4°, and the barometric pressure 29.87" and falling. |
| 7/3/2011 |
5:24 AM |
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0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/02-on a gorgeous summer afternoon, we have mostly clear skies (scattered Cumulus from the SW to the NW as well as to the NE), temperatures are in the low to mid 90's, BP 29.60" (and falling), along with a pleasant breeze from several directions including the SE, South, and SW. Current conditions for 7/03-clear skies (quite a contrast to earlier this morning when scattered mid level clouds were observed), light to moderate haze, no moisture during the overnight, and some nice wind velocities. They are from the West at 8-10 mph, wind gust: out of the WNW to 19 mph, humidity 40%, dew point 41°. current snow level 8500' [yesterday, it was 11,500'], ot temperature 69.8°, and the barometric pressure 29.68" and falling. Happy fourth of July everyone!!! |
| 7/5/2011 |
5:09 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The NPJ is well to the North of WA as a ridge of high pressure is firmly established over the PNW with its apex adjacent to the NW Territories/Alberta border. Although indications are that this high pressure will be providing the PNW with very pleasant weather for the next few days (and even briefly strengthening tomorrow!) before moving East over MT and the Dakotas, there is a trough in the Gulf with a SE sag almost past SE AK, but just NW of the Queen Charlottes. Within this trough is an upper level low circulating in a near circular pattern adjacent to SE AK with its center also located in the same proximity just mentioned. For the time being, it appears to be innocuous with the high pressure in place, both the NPJ and the upper level winds are in a SW flow over NW Vancouver Island, the Southern Queen Charlottes and central BC; however, by late Thursday, the trough (mentioned above) is now adjacent to the WA/OR coasts and by early Friday will be sagging across WA(from the SW to the NE) into OR. As a result, "a strong cold front passage will bring a CHANCE of thunderstorms to the region Thursday afternoon and evening. Some of these storms could be strong {or nasty} featuring gusty winds, brief heavy rain and POSSIBLE large hail". Mid afternoon weather for 7/04-clear skies (except for some scattered high level clouds in the East and NE), temperatures in the low to mid 80's, BP 29.82" (and rising), along with minimal air movement. Current conditions for 7/05-clear skies, light haze, no moisture in the past 24, and minimal air movement. The "movement" we do have is from the West at 2 mph, then from the WSW at 1 mph, wind gust: out of the NW to 19 mph, humidity 42%, dew point 43°. current freezing level 13,000' (yesterday, it was at 11,500'). ot temperature 64.4° and the barometric pressure 29.95" and rising (interestingly, the last time the reading was 30.00" or higher, was on 6/03 when it was 30.15" and rising). |
| 7/6/2011 |
5:15 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The PNW will enjoy another day of warm, dry weather as the ridge of high pressure remains firmly established with its apex now nudging across extreme NE BC and NW Alberta into the Southern portion of the NW Territories and both the NPJ and upper level winds are in a SW flow over BC. Interestingly, the high pressure over the PNW, is keeping the upper level low (currently circulating in a general SW to NE pattern in the Eastern Gulf area with the NE side extending across SE AK into extreme NE BC and the Southern portion of the Yukon) at bay for the time being. There are indications however, that later today, this high pressure will begin to break down and move East over MT and the Dakotas where it will temporarily remain through Friday morning. Why? Because a trough (with a slight SW sag) currently well West of the WA/OR coasts will quickly move to just off the WA/OR coasts later Thursday and then be in a SE sag past WA into Northern OR by early Friday. With the exit of this high pressure, troughs and upper level lows over the region (WA) will be the pattern for the foreseeable future. Mid afternoon weather for 7/05-clear skies on a very warm summer afternoon, temperatures are in the low to mid 90's, BP 29.85" (and rising), and very pleasant but gentle breezes from several directions including the East, SE, SW, and South along with a glorious view of Glacier Peak! Current conditions for 7/06-clear skies, light haze, no moisture over the last 24, and minimal air movement. The light velocities are from the SSW at 2 mph, then from the WSW at 1-5 mph, wind gust: out of the NW to 15 mph, humidity 43%, dew point 47°, current freezing level 14,000' [yesterday, it was 13,000], ot temperature 66.9°, and the barometric pressure 29.88" and rising. |
| 7/7/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/07-on a very warm summer afternoon, we have clear skies, temperatures in the low to mid 90's, BP 29.77" (and rising), along with minimal air movement. Current conditions for 7/07-clear skies, light to moderate haze, no precipitation in the last 24, and minimal air movement. The light wind velocities are from the NNW at 5-7 mph, wind gust: out of the NW to 16 mph, humidity 46%, dew point 49° (interestingly, since 7/03, the numerical differences between the humidity and dew points has varied only one to four points), current freezing level 11,500' [yesterday, it was at 14,000'], ot temperature 68.4°, and the barometric pressure 29.72" and falling. |
| 7/8/2011 |
5:15 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday's ridge of high pressure over MT and the Dakotas {with its apex extending into Northern Saskatchewan} moved slightly East over Eastern Alberta, all of Saskatchewan and most of Manitoba (as well as Eastern MT and the Dakotas) with its flatter apex now extending into the Southern NW Territories. Meanwhile, the trough that yesterday was just off the WA/OR coasts, has moved inland with the Southernmost sag (SE) just nudging past the Northern OR border. Within this trough is an upper level low circulating in a somewhat irregular SE to NW pattern from the vicinity of Williams Lake BC (also the locale of its center) to the proximity of Ketchikan, AK. There are indications however, that this upper level low will move from its present location (just mentioned) into Alberta (staying just North of the WA and ID borders) with its center now located very close to the Alberta/Saskatchewan border. This action will act as a "kicker"/mover to force the high pressure (mentioned above) further East over most of Saskatchewan and Manitoba as well as the Dakotas and MI. Interestingly, in the early hours of the morning (3A), a band of clouds "blew up" in a SW to NE direction from SW Douglas county into Ferry, Stevens and Pend Oreille counties and over a short period of time, dissipated relatively quick. Current conditions for 7/08-scattered high level clouds to the East and South with lower level Cumulus in the West and NW, light haze, no precipitation in the past 24, and light wind velocities. They are from the West at 2 mph (although the wind speed has picked up in the last few minutes), wind gust: out of the WNW to 19 mph, humidity 54%, dew point 39° [yesterday, the readings were 46% and 49° respectively], current snow level 6500' [yesterday, it was 11,500'], ot temperature 58.8°, and the barometric pressure 29.88" and rising. |
| 7/9/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The most active weather taking place relative to WA, would be in the Alberta/Saskatchewan region where a large upper level low is presently circulating in a general SE to NW pattern from the Southern Saskatchewan region to Western Alberta (near Grande Cache) with its center over Eastern Alberta (adjacent to Edmonton). SW and parallel to the Aleutians, is a minor ridge with its apex just South of Kodiak Island, AK. Flowing down its gentle East side are upper level winds which appear to be pushing a weak wave in an East by SE direction toward the Queen Charlottes, Vancouver Island, and WA. As the wave advances, it forces everything ahead of it in the same direction including a lengthy band of water vapor currently in a SW flow over WA (except for the SE boundary counties). Behind this wave, is yet another one riding up and cresting the minor ridge (mentioned above). There are indications however, that even though this ridge will continue to build and occupy the entire Gulf region by early next week (except for SE AK and the BC coasts), it will not reach the PNW. Mid afternoon weather for 7/08-basically clear skies except for some widely scattered clouds (all Cumulus), temperatures in the low to mid 70's (or about 15-20 degrees cooler than yesterday at this time), BP 29.88" (and rising), along with light breezes from both the NW and NE. Current conditions for 7/09-scattered high level clouds (Cirrus and Cirrostratus), light haze, no precipitation in the last 24, and minimal air movement. The light velocities are from the West at 0-2 mph, wind gust: out of the WNW to 14 mph, humidity 42% [yesterday, it was 54%], dew point 36°, current freezing level 10,000' [yesterday, it was 6500'], ot temperature 56.5°, and the barometric pressure 29.78" and rising. |
| 7/10/2011 |
6:02 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/09-the clouds (Cirrus, Cirrostratus) of earlier this afternoon, have since moved off and are now located from the SE to the South resulting in mostly clear skies, temperatures in the low to mid 80's, BP 29.68" (and falling), with minimal air movement from the NE. Current conditions for 7/10-a large area of Cirrostratus in the Southern to South Eastern sky; otherwise, scattered Cirrus and Cirrostratus, continued light haze, no precipitation in the last 24 (since 6/08 when 0.46" was recorded, there have been just two "rain" events [one on 6/10, and the other was on 6/18] where only trace amounts were recorded. Stated another way, it has been 32 days since the last measurable rain event took place), and minimal air movement. The light air movement however, is from the WNW at 2-4 mph, wind gust: out of the NW to 15 mph, humidity 45%, dew point 40°, current snow level 9500', ot temperature 61.2°, and the barometric pressure 29.75" and falling. |
| 7/11/2011 |
5:09 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A high pressure ridge, trough, upper level low, and minor ridging are all affecting the weather in some way from the Gulf to the PNW. Both the GOES West IR and Water Vapor satellite images show a long and narrow band of clouds riding up the steep West side and cresting a ridge of high pressure currently just SW of the Aleutians with its apex nudging past Kodiak Island, AK. Cresting the ridge of high pressure, they (the clouds) plunge down the steep East side into the bowels of a very large trough moving East by SE and with a SW sag adjacent to the OR and Northern CA coasts. On the SE side of the trough, is a relative weak system (as light precipitation is associated with it) moving East by NE across Vancouver Island into SW BC, Western WA and NW OR. Within this trough is an upper level low circulating in an irregular "circular" SW to NE pattern (from the Pacific Ocean-adjacent to SE AK and WA coasts-to Western Alberta) with its center situated just SW of the Queen Charlottes. East of our region (WA), is a minor ridge of high pressure over most of MT, the Dakotas, and WY with its apex extending North into Southern Saskatchewan. Mid afternoon weather for 7/10-scattered Cirrocumulus, Cirrostratus, Altocumulus (the dominant cloud type) and lower level Cumulus on an otherwise very pleasant summer afternoon. Temperatures are in the low to mid 80's, BP 29.66" (and falling), along with very little air movement. Current conditions for 7/11-mostly cloudy skies (Cirrus and Cirrostratus-the dominant cloud type- along with scattered lower level Cumulus), light haze, no precipitation in the last 24, and very little air movement. These light velocities are from the WNW at 4-5 mph, wind gust: out of the NW to 14 mph, humidity 53%, dew point 46°, current snow level 9000' [yesterday, it was 10,000'], ot temperature 61.5°, and the barometric pressure 29.72" and falling.
|
| 7/12/2011 |
5:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
After the observation time, a series of brief sprinkles commenced with the total amounting to a trace. Most of the weather is taking place in the PNW (including WA and OR) with a trough, in a southern sag, just off the OR, North central CA coastlines. This trough contains a large upper level low with the SE side flowing over SW to Northern WA and its center is West of Vancouver Island. Although there is no organized counterclockwise rotation in the center, it is having a profound affect on the clouds associated with it as they rotate counterclockwise (over Western OR/WA, and South central BC) thereby conforming to the general pattern of the upper level low where moisture varies from light (South and East of the Tri-Cities region as well as the Columbia Basin) to moderate (in a SW to NE direction from Yakima to North of Coulee City). There are indications that the center of this upper level low will shift sharply SE, to just off the OR coast with the Eastern side moving ashore into Western WA and the NE side extending past Vancouver Island into SW BC. Mid afternoon weather for 7/11-scattered Cirrus, Cirrostratus, and lower level Cumulus on an otherwise very pleasant summer afternoon. Temperatures are in the mid to upper 80's, BP 29.62" (and falling), along with very little air movement. Current conditions for 7/12-mostly cloudy skies, light to moderate haze, a gorgeous rainbow was observed earlier this morning in the SW sky, and light wind velocities. They are from the NNW at 4-6 mph, wind gust: out of the NW to 19 mph, humidity 60%, dew point 48°, current snow level 9000', ot temperature 68°, and the barometric pressure 29.67" and falling. |
| 7/13/2011 |
5:32 AM |
0.03 |
0.0 |
M |
0.0 |
M |
East of our area (WA), is a ridge of high pressure over the Southern half of Alberta, most of Saskatchewan and Manitoba (as well as MT, the Dakotas and MI) with its apex adjacent to the boundaries of the latter two provinces. In the Gulf region, is another ridge of high pressure, the West side of which {near the apex} is parallel to the inner Aleutians though "over" the SW portion of Kodiak Island with its apex extending NE toward SE AK. Our area (WA) however, is a completely different story, beginning with a trough in a slight SW sag just off the OR and Northern CA coasts. "Nested" in the trough is an upper level low {with its center near the SE end of Vancouver Island} circulating in a general North/South pattern with its Eastern side in Western WA, and the NE side extending past Vancouver Island into SW BC. With a ridge of high pressure in the Gulf region, and another one East of our area (mentioned above), and (WA) being affected by a trough with an upper level low, why is it that the middle third is enjoying pleasant weather while both the Eastern and Western third of WA have overcast skies? The answer appears to be in the return flow of the upper level low as warmer, drier air is flowing from NW OR across the central third of WA before NW into SW BC; hence, the nicer weather. Mid afternoon weather for 7/12-a Nimbostratus overcast in the form of light rain, temperature in the upper 60's to low 70's (or about 15-20 degrees cooler than yesterday at this time), BP 29.67" (and falling), along with minimal air movement. Current conditions for 7/13-partly cloudy skies (all Cumulus), light haze, and minimal to light air movement. These light velocities are from the West at 3 mph, then from the WNW at 5-7 mph, wind gust: out of the WNW to 12 mph, humidity 57%, dew point 47°, current snow level 7500' [yesterday, it was 9000'], ot temperature 58.3°, and the barometric pressure 29.67" and falling. |
| 7/14/2011 |
5:17 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/13-increasing cloudiness (all Cumulus) since earlier this morning when the sky was mostly clear. Temperatures are in the upper 70's to low 80's, BP 29.63" (and falling), along with very little air movement. Current conditions for 7/14-mostly overcast (except for some partial clearing in the East and South), continued light haze, no precipitation in the last 24, and minimal to light wind velocities. These light velocities are from the WNW at 5-6 mph, wind gust: out of the NW to 15 mph, humidity 59%, dew point 44°, current snow level 7500', ot temperature 58.1°, and the barometric pressure 29.70" and falling.
|
| 7/15/2011 |
5:03 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/14 two large areas of mid level clouds (Altostratus) to the North and SE, scattered lower level Cumulus (the dominant cloud type), and, observed virga East of Birch Mountain (to the North) and toward the SE. Temperatures are in the low to mid 70's, BP 29.67" (and falling), along with some air movement from the NW. Current conditions for 7/15-mostly clear skies {except for scattered high level clouds-Cirrus}, light haze, no precipitation in the last 24, and very little air movement. However, it is from the North at 4-7 mph, wind gust: out of the NNW to 12 mph, humidity 68%, dew point 46°, current snow level 9000' [yesterday, it was at 7500'], ot temperature 58.4°, and the barometric pressure 29.71" and falling (the last time the BP was 30.00" or higher, was on 6/03 when the reading was 30.15" and rising. This tends to suggest that there hasn't been any sustained warming. Why? Because during this period of time, a strong ridge of high pressure, which is necessary for sustained warming , has so far been absent). |
| 7/16/2011 |
5:28 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Shortly after observation time, a trace was recorded as there were a few drops in the funnel. Both the NPJ and upper level wind charts show a ridge of high pressure over the Aleutians with its apex extending North into SW AK. There are indications, however, that by Monday, it will have a negative NE tilt over Southern SE AK, the Queen Charlottes, and the central coastal area of BC, thus falling short of the PNW. Meanwhile, a lengthy band of clouds are riding up an over the ridge of high pressure (mentioned above) with the leading "wave" flowing SE down its East side and simultaneously approaching North central CA. Of particular interest, is a long and relatively narrow trough (courtesy of the NPJ chart) extending slightly SE from SE AK across most of Vancouver Island to just off the WA coast. In the middle of this trough is a small upper level low (as shown on the upper level wind charts) circulating in a slight SE to NW pattern from just off the NW Vancouver Island coast to the Southern half of the Queen Charlottes. At the SE end of the "narrow trough" (mentioned above) is what appears to be a small "trough" of drier air moving East by NE into SW WA, Western OR, and North central CA. As a result, a system {with a fair amount of moisture associated with it)is lying in a general SE to NW plane and moving North by NE from central OR across Western WA and into most of Vancouver Island. Current weather conditions for 7/16-overcast skies with occasional brief showers, light to moderate haze, and minimal to light wind velocities. They are from the NW at 1-4 mph, wind gust: out of the NW to 14 mph, humidity 75%, dew point 52°, current snow level 9500', ot temperature 61.5°, and the barometric pressure 29.59" and falling. |
| 7/17/2011 |
7:00 AM |
0.11 |
0.0 |
M |
0.0 |
M |
The recorded amounts (shown in the box above and the times given below) reflect the precipitation that fell yesterday. Charts of both the upper level winds and NPJ, show a relatively strong ridge of high pressure in a NW tilt over SE BC, all of Alberta (except for the NW portion near the Alberta/border), most of Manitoba, MT, the Dakotas and MI with its apex extending well into the NW Territories. In the Gulf, is another ridge of high pressure (though not nearly as strong as the one just mentioned) with its apex extending NE and just shy of SE AK and the Queen Charlottes. Riding up and over this ridge is a long and narrow band of clouds with the leading edge commencing to dive down the steep East side into a trough with the Southern most sag adjacent to Southern CA. Within this trough is a large upper level low circulating in a slight SE to NW pattern (the center of which is SW of the Queen Charlottes) with the Eastern side coming ashore in NW WA near the Neah Bay/Forks region while the NE side extends across Vancouver Island into SW BC. Mid afternoon weather for 7/16-much improved weather with partly cloudy skies (including scattered Cirrus, Cirrocumulus, some Cirrostratus and lower level Cumulus) compared to earlier in the day when the skies were overcast accompanied by brief and occasionally heavier showers during the late morning and early afternoon hours. Temperatures are in the low to mid 70's, BP 29.61" (and falling), along with minimal air movement. Current conditions for 7/17-mostly cloudy skies (Cirrostratus and lower level Cumulus being the dominant cloud types), light to moderate haze, no precipitation in the last 24, and minimal air movement. It is from the West at 3-5 mph, wind gust: out of the WNW to 14 mph, humidity 69%, dew point 50°, current snow level 9500', ot temperature 60.6°, and the barometric pressure 29.72" and falling. |
| 7/18/2011 |
5:47 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The ridge of high pressure East of our region (WA), appears to have strengthened since yesterday as it is now over the provinces of Alberta, Saskatchewan, Manitoba as well as MT, the Dakotas and MI with its apex extending well North of the NW Territories. This brings us to the first interesting weather feature which is a wide and somewhat long dry swath extending from CA (except for the NW portion) NE across NV, most of ID (except for the Eastern portion near the ID/WY border) into Western MT. This is congruous to both the NPJ and upper level wind charts (SW to NE). Another interesting feature, once again, regards the upper level winds and NPJ as both charts appear to suggest a zonal split flow, in the Gulf region, with some of the energy going into BC, and the rest turning SE past WA and OR to become adjacent to the central CA coastline in the form of a trough with a slight SW sag. Just off the NW CA coast, is a closed low and the clouds associated with it are moving SW to NE across NW CA, Western OR, the middle third of WA and SE BC. Interestingly, these clouds are riding up the steep NW side of the dry swath, or the West side of the ridge of high pressure (both of which are mentioned above). Mid afternoon weather for 7/17-scattered Cirrus, Cirrostratus (with the largest concentration in the NW to SE) and lower level Cumulus. Temperatures are in the low to mid 80's, BP 29.59" (and falling), along with light air movement from the North. Current conditions for 7/18-mostly cloudy skies (with scattered Cirrus, some Cirrocumulus, Cirrostratus [the dominant cloud type], and scattered lower level Cumulus), light haze, no precipitation in the last 24, and minimal air movement. It is from the WNW at 5-7 mph, wind gust: out of the NW to 19 mph, humidity 57%, dew point 49°, current snow level 10,500' [yesterday, it was 9500'], ot temperature 66.4°, and the barometric pressure 29.72" and falling. |
| 7/19/2011 |
5:37 AM |
0.06 |
0.0 |
M |
0.0 |
M |
Once again, both the NPJ and upper level wind charts show a slightly stronger ridge of high pressure than yesterday over the provinces of Alberta, Saskatchewan, Manitoba as well as MT, the Dakotas and MI with its apex extending will past the NW Territories in a NW tilt. In the mid section of the US, is an immense "bubble" of high pressure that extends from AZ to WI, and from the Dakotas to TX. However, there are indications that this bubble will begin modifying today, and by sometime tomorrow will be completely dissipated. Meanwhile, the NPJ is in a NW flow across the Gulf before splitting (as it nears the Queen Charlottes and Vancouver Island), with some of the energy going into BC, and the rest turning SE near North central CA in the form of a trough with a Southern sag (though not as far South as yesterday). Adjacent to the East side of the trough, is a small upper level low, circulating in a SW to NE pattern from NW CA to SW OR (near the Florence area). A GOES West satellite image shows a large "tongue-like" band of water vapor moving East by SE down the BC and WA/OR coastlines. Mid afternoon weather for 7/18-mostly cloudy skies (a small area of Cirrostratus to the NW, large areas of Altocumulus and Altostratus, along with scattered lower level Cumulus), temperatures are in the mid to upper 80's, BP 29.65" (and falling), along with minimal air movement. Current conditions for 7/19-overcast (as the precipitation stopped a few minutes ago), light haze, and minimal air movement. It is however from the WNW at 5-8 mph, wind gust: out of the NW to 18 mph, humidity 55%, dew point 47°, current snow level 9500' (yesterday, it was 10,500'), ot temperature 68.5°, and the barometric pressure 29.67" and falling.
|
| 7/20/2011 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/21/2011 |
5:04 AM |
0.00 |
0.0 |
M |
0.0 |
M |
A very large and irregular shaped upper level low extends from Manitoba (adjacent to Hudson Bay) to SW BC and from the SW portion of the NW Territories to NW Alberta (near the Alberta/BC border). Within this behemoth are two centers, one of which is circulating very near the border of central Manitoba/Saskatchewan while the other is circulating in a general SW to NE pattern SE of the Prince Rupert region to the New Hazelton area in BC. Meanwhile, both the NPJ and the upper level wind charts are still in a NW flow {as high pressure currently dominates the Gulf region} until they are adjacent to the WA/OR coasts where the upper level winds then become more zonal over WA while the NPJ is zonal over Southern BC and Western WA before gradually turning SE across WA. A bow-shaped disturbance is moving East (which is SE of the "center" in BC and mentioned above) and extends in a SW to NE direction from Northern WA (near the Oroville area) across SE BC and into central Alberta {adjacent to the Grande Cache region}. Why? Because drier air and the NPJ are moving across Southern BC thereby forcing this disturbance in an Easterly direction. Mid afternoon weather for 7/20-partly cloudy skies (widely scattered Cirrus, and scattered lower level Cumulus) on a very pleasant summer afternoon. Temperatures are in the low to mid 80's, BP 29.78" (and rising), along with minimal air movement. Current conditions for 7/21-partly to mostly cloudy skies, no precipitation in the last 24, light to moderate haze and minimal air movement. It is from the WNW at 0-1 mph, wind gust: out of the NW to 12 mph, humidity 51%, dew point 46°, current snow level 9000', ot temperature 64.6°, and the barometric pressure 29.70" and falling.
|
| 7/22/2011 |
5:07 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although clear skies prevail in this observation area, there is a very large upper level low circulating in a general SW to NE pattern from NW MT, to the SE portion of the Yukon with the apex extending just past its border (the Yukon) into the SW portion of the NW Territories. Within this upper level low, are two low pressure systems, the stronger of which is in NW MT, while the other one is NE of Prince George in BC. Regarding the energy extending South from Alberta into Western MT, how did it get there? A wide band of water vapor is moving East by SE along and down BC into WA and OR thereby forcing a moderate area of drier air from Eastern OR, SE WA, and Northern ID into SE OR, and from SW to NE ID into North Western MT. This in turn, forced the energy (mentioned above) in an Easterly direction from NW MT to its current location. So, it would appear that these actions (mentioned above) would be responsible for the energy's present location. In addition, this "energy" is associated with a much larger band of clouds to the North (Alberta) which is associated to the low pressure system NE of Prince George. Current conditions for 7/22-widely scattered Cirrus, in otherwise clear skies, light to moderate haze, no precipitation in the last 24, and very light wind velocities. They are however, from the WNW from 7-9 mph, wind gust: out of the NW to 18 mph, humidity 45%, dew point 39° [yesterday, the reading was 46°], current snow level 8000' {this will be temporary as the freezing levels are forecast to reach between 12,000' and 13,000' by Sunday thereby making it the warmest day of the week end}, ot temperature 57.2°, and the barometric pressure 29.78" and falling. |
| 7/23/2011 |
5:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Very active weather is occurring in the Gulf, the PNW and Western Canada where a large trough extends SE across Alberta into Western Saskatchewan with the Southeastern most boundary very close to the SE corner of this province. Within this trough, is an upper level low circulating in a relative circular pattern in Alberta with its East side nudging past the Alberta/Saskatchewan border into Western Saskatchewan. Interestingly, outside of this upper level low, there are two low pressure systems on the Northern and Southern perimeter. Behind this, some minor ridging is over WA and Vancouver Island with the apex extending into South central BC in a NW tilt. Well off the West coast with a SW sag, is yet another trough within which is an egg-shaped upper level low SW of the Queen Charlottes and circulating in a slight SW to NE pattern with the center located on its SW side. In addition, both the West and SE sides of this trough are very active (in directional movement) including the "tail section" of a developing low pressure system NW of HI on its (the trough's) SW side. Mid afternoon weather for 7/22-on a beautiful summer afternoon, we have partly cloudy skies (scattered Cumulus), temperatures are in the upper 70's to low 80's, BP 29.75" and falling, along with minimal air movement from the North. Current conditions for 7/23-clear skies, light haze, no precipitation in the last 24, and minimal air movement. IT is from the West at 4 mph, then from the North at 6 mph, wind gust: out of the WNW to 18 mph, then from the NNE to 15 mph, humidity 59%, dew point 42°, [yesterday, the readings were 45% and 39° respectively], current freezing level 11,000' {yesterday, it was 8000'}, ot temperature 59°, and the barometric pressure 29.85" and rising.
|
| 7/24/2011 |
5:39 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although a nice ridge of high pressure is over the PNW as well as the South Eastern half of Vancouver Island, there is a lengthy band of clouds moving SW to NE with the Southern half (adjacent to the OR coast) moving up the West side of the high pressure ridge while the NE portion (near the WA coast) is moving across the NW half of Vancouver Island into Southern BC as it finally crests the high pressure ridge. Meanwhile, both the upper level winds and the NPJ are in a split flow with some of the energy going into BC, while the rest of it turns SE in the form of a trough with the slight SW sag adjacent to Northern CA. Here's where "things" get interesting. A lengthy band of water vapor moving quickly to the East (which is congruous to the NPJ flow) is parallel to and just South of the Aleutians along with a moderate area of drier air on its Southern side and the "head" of it acting as a battering ram is effectively forcing the Southern half of the wave (associated to an upper level low in AK) into SE AK and the SW portion of the Yukon with the Southern portion of the wave approaching the Queen Charlottes. South of the band of water vapor (mentioned above) is a moderate area of clockwise rotation which would tend to suggest that a "bubble" of high pressure is in the vicinity. Current conditions for 7/24-clear skies, light to moderate haze, no precipitation in the last 24, and little to no air movement. It is however, from the WNW at 4-6 mph, wind gust: out of the NW to 12 mph, humidity 55%, dew point 46°, current freezing level 13,500' [yesterday, it was 11,000], ot temperature 59.4°, and the barometric pressure 29.90" and rising. |
| 7/25/2011 |
5:07 AM |
0.04 |
0.0 |
M |
0.0 |
M |
The amount of precipitation shown in the box above is a result of the many intermittent showers since 4:30 AM. WOW! What an abrupt change from warm, summer-like temperatures of yesterday, to cooler conditions and thunderstorms accompanied by light intermittent showers today. The ridge of high pressure responsible for the summer-like weather over the PNW, has moved East and is now over MT, the Dakotas, Southern ID and WY with the apex extending into SE Alberta and Southern Saskatchewan in a slight NW tilt. As was the case yesterday, both the upper level winds and NPJ are still in a split flow with some of the energy going into BC, and the rest is in NW flow into OR and CA in the form of a trough with a low pressure system centered near the vicinity of Hood River, OR. From here, it developed very quickly and simultaneously moved North up the WA Cascades before turning NE into SE BC. This NE direction is believed to be its (the low pressure system mentioned above) attempt to move up the steep West side of the high pressure ridge. The Southern and SE side of the trough is moving NE across NW CA, Western OR and North Central WA. However, an "upper trough", moving in an Easterly direction, is coming ashore in NW OR, and Western WA. Mid afternoon weather for 7/24-the first emergence of clouds since Friday (7/22) in the form of scattered Altocumulus in the West, NW, and East on an otherwise gorgeous third day of summer weather. Temperatures are in the low to mid 90's along with very little air movement. Current conditions for 7/25-overcast skies with intermittent showers, and light wind velocities. They are from the WNW at 4-8 mph, wind gust: out of the NW to 18 mph, humidity 57%, dew point, 53°, current freezing 11,000' [yesterday, it was 13,500'], ot temperature 70°, and the barometric pressure 29.70" and falling.
|
| 7/26/2011 |
5:01 AM |
0.18 |
0.0 |
M |
0.0 |
M |
The first 0.04" (recorded yesterday-7/25) was received in the form of light intermittent showers from early to mid morning, while the remaining 0.18" (also recorded yesterday-7/25) was acquired by a steady, hard rain that included a brief period of heavy precipitation (as indicated by the times below) for a grand total of 0.22" (for 7/25). While West of the Cascades is generally overcast, East of the Cascades is mostly clear except for NE and SE WA where the cloud cover ranges from overcast to partly cloudy. So, in other words, Eastern WA is under mostly clear skies. How? A ridge of high pressure well East of WA to be influential, is over the Dakotas, NE, and MN with it apex extending into SE Saskatchewan and Southern Manitoba. Interestingly, both the upper level winds and the NPJ are in a NW flow from the Gulf region until they reach the PNW coasts of BC, WA and OR where the flow becomes more zonal over WA (along the BC/WA border) and Northern OR but then, in the form of a trough sags into Northern CA. At this time, a disturbance is moving East along the WA/BC border from Western to NE WA. Behind this, is yet another disturbance moving East by SE across Vancouver Island, and will follow the same Easterly direction as its predecessor. Current conditions for 7/26-scattered Cirrus to the South and lower level Cumulus in the West, on an otherwise beautiful sunny morning, light to moderate haze, no precipitation in the last 24, along with light wind velocities. They are from the WNW at 5-9 mph, wind gust: out of the NW to 11 mph, humidity 55%, dew point 48°, current snow level 10,000' { yesterday, it was 11,000'], ot temperature 62.6°, and the barometric pressure 29.77" and falling. |
| 7/27/2011 |
5:07 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/26-since earlier in the day when we had clear skies, there has been an increase in high level clouds (scattered Cirrus and Cirrostratus) and scattered lower level Cumulus. Temperatures are in the low to mid 80's, BP 29.70" and falling, along with a light breeze from the North. Current conditions for 7/27-scattered Cirrus in the South and Cumulus in the East on an otherwise mostly clear sky. There was no moisture during the overnight, light to moderate haze, and light wind velocities. They are from the West at 5-8 mph, wind gust: out of the West to 20 mph, humidity 44%, dew point 43° {yesterday, the readings were 55% and 48° respectively}, current snow level 11,000', ot temperature 64.6°, and the barometric pressure 29.80" and falling. |
| 7/28/2011 |
5:04 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/27-the dominant cloud type would be high level Cirrus, a few Contrails and scattered lower level Cumulus on an otherwise very pleasant, sunny afternoon. Temperatures are in the low to mid 80's, BP 29.80" and falling, along with some air movement from the NW. Current conditions for 7/28-clear skies, no precipitation in the last 24, moderate haze, and very little air movement. It is however, from the North at 5 mph, wind gust: out of the NNW to 11 mph, humidity 62% (yesterday, it was 44%), dew point 46°, current freezing level 13,000' {yesterday, it was at 11,000'}, ot temperature 62.1°, and the barometric pressure 29.95" and rising. |
| 7/29/2011 |
5:04 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/28-except for a few scattered Cumulus in the West and SW, we have clear skies, temperatures in the upper 80's to low 90'(or about 10 degrees warmer then yesterday at this time), BP 29.81" and falling, along with very little air movement. Current conditions for 7/29-clear skies, no precipitation in the last 24, moderate haze, and very light wind velocities. They are from the West at 2-7 mph, wind gust: out of the WNW to 20 mph, humidity 43%, dew point 48°, current freezing level 12,500', ot temperature 68.7°, and the barometric pressure 29.84" and rising. |
| 7/30/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The present warm and pleasant weather is due to a nice ridge of high pressure over WA, North ID, MT, the Dakotas as well as SE BC, most of Alberta, Saskatchewan and Manitoba with its apex adjacent to the Alberta/NW Territories border. To the NW, is an upper level low circulating in a general SW to NE pattern from adjacent to the Queen Charlottes across Northern BC and into the SW "corner" of the NW Territories and the SE portion of the Yukon. Its center (just off the SE AK coast) is displaying counterclockwise rotation and is even affecting what appears to be a disturbance (which extends from the SW to NE part of the Yukon) as the Southern portion of it attempts to conform to the counterclockwise rotation. SW of the upper level low, is a moderate sized trough moving East by SE with a SW sag. Flowing around its Southern boundary is a lengthy band of clouds that turn abruptly to an East by NE direction around the Eastern side of the trough as they attempt to ride up the steep West side of the high pressure ridge. This "direction" is also congruous to the flow pattern of the NPJ {SW to NE}. Current conditions for 7/30-clear skies, moderate haze, no precipitation in the last 24, and minimal wind velocities. They are from the North at 2-4 mph, wind gust: out of the NNW to 14 mph, humidity 53%, dew point 48°, current freezing level 13,500', ot temperature 64.4°, and the barometric pressure 29.80" and falling. |
| 7/31/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 7/30-clear skies, temperatures are in the upper 80's to low 90's, BP 29.66" and falling along with a pleasant breeze from several directions including the East, SE, and South on another gorgeous summer afternoon that included a spectacular view of Glacier Peak to the NW! Current conditions for 7/31-clear skies (another gorgeous day can be expected as the ridge of high pressure over WA has strengthened somewhat since yesterday. In addition,it could become breezy as a very large [though dry] cold front is moving SE across WA and NW OR with high pressure moving in behind it), moderate haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 5-8 mph, wind gust: out of the NW to 20 mph, humidity 45%, dew point 49°, current snow level 11,000' [yesterday, it was at 13,500'], ot temperature 69.1°, and the barometric pressure 29.74" and falling. Here are some EOM stats for July- 1) total rain: 0.42" which is 140% of average, 2) number of days with no precipitation: 27, 3) high BP: 29.99" on 7/01, 4) low BP: 29.59" on 7/16, 5) date with low BP and no precipitation: 29.70" on 7/14, 6) date with high BP and precipitation: this event did not happen, 7) average BP: 29.78", 8) average morning temperature: 62.5°, 9) high morning temperature: 70° on 7/25, and 10) low morning temperature: 56.5° on 7/09. |
| 8/1/2011 |
5:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday's cold front that moved across WA and brought breezy conditions with its passage, has since become lengthy, commencing with a trough adjacent to North central CA, then extends across NW CA into Southwestern to NE OR and just clipping SE WA in the process, before turning NE across the central panhandle of ID into the NW quadrant of MT and finally into Saskatchewan from the SW to the East central part of the province. Meanwhile, yesterday's ridge of high pressure over WA {which was responsible for the gorgeous weather!}, has moved well East of the region and is now over MN, IA, NE as well as Manitoba and Western Ontario with its flat apex extending NE across the SW half of Hudson Bay. So, now what is contributing to the nice weather over WA? The upper level wind chart shows some ridging along the coast of BC (with its center located near the SW coast of BC and NE of Vancouver Island) and SE AK with its apex extending into the Yukon's SE quadrant. SW of Vancouver Island and moving East is a weak shortwave that should reach WA and Vancouver Island sometime tomorrow. Mid afternoon weather for 7/31-scattered Cumulus, temperatures are in the mid to upper 80's (which is about 5-7 degrees cooler than yesterday at this time), BP 29.70" and falling along with light winds from the NE. Current conditions for 8/01-clear skies, no precipitation in the last 24, light to moderate haze, and minimal air movement. It is from the West at 4-5 mph, wind gust: out of the WNW to 17 mph, humidity 53%, dew point 44°, current freezing level 12,500' [yesterday, it was 11,000], ot temperature 62.4°, and the barometric pressure 29.84" and rising. |
| 8/2/2011 |
5:16 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The gorgeous weather of the past few days has given way to mid and high level clouds as an upper level low moving in an Easterly direction, is coming ashore over Vancouver Island and NW WA (in a SW to NE direction from South of the Olympic National Park to the Bellingham region and bringing a fair amount of moisture with it) and as it continues its Easterly direction, this action forces the clouds ahead of it in an East by NE direction over North central WA. However, a second band of clouds associated with this upper level low in SW BC, is moving NE toward Alberta suggesting the presence of a high pressure ridge in the vicinity. Another area of high pressure (with its center near the Sitka region) is over NW BC and SE AK {that borders NW BC} with its apex extending into the state of SE AK and the Southern half of the Yukon. Mid afternoon weather for 8/01-continued gorgeous summer weather with clear skies, temperatures in the mid to upper 80's, BP 29.77" and rising, along with slight to no air movement. Current conditions for 8/02-mostly cloudy ( mid and high level clouds), no precipitation in the last 24, moderate haze, and light wind velocities. they are from the West at 3-4 mph, wind gust: out of the WNW to 16 mph, humidity 44%, dew point 46°, current freezing level 11,000', ot temperature 62.8°, and the barometric pressure 29.77" and falling. |
| 8/3/2011 |
5:25 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since there is no ridge of high pressure directly over WA, why is the region experiencing such gorgeous weather today? It is believed that there are two possibilities. The NOAA's surface analysis show two areas of high pressure one of which is located over SE BC adjacent to the Alberta border near Salmon Arm, while the other is over the San Juans in the Anacortes/Bellingham area I(1st possibility). Both the upper level wind and NPJ charts show a ridge of high pressure over the Queen Charlottes, SE AK, and most of BC with its apex extending into the Yukon's SE quadrant and a small SW portion of the NW Territories. Although it is not directly over WA, it is close enough to be influential (2nd possibility). Behind this ridge of high pressure is an occluded front which at this time, looks to come ashore over SE AK, the SW part of the Yukon, and NW BC as it attempts to ride up the steep West side of the high pressure ridge (just mentioned above). In addition, even though Eastern WA is experiencing clear skies, the NOAA's surface analysis (mentioned above) shows a low pressure {or a thermal low?} North of the Tri-cities. Mid afternoon weather for 8/02-much improved since earlier in the day as a weak upper level trough (and the clouds associated with it) moved through the area bringing increased winds and temporary cooler conditions. At this time, we have partly cloudy skies {widely scattered mid and upper level clouds}, temperatures in the upper 80's to low 90's, BP 29.69" and falling, along with light winds from the NW and NE. Current conditions for 8/03-clear skies, light to moderate haze, no precipitation in the last 24, and light wind velocities. They are from the NW at 2-6 mph, wind gust: from the NW to 16 mph, humidity 45%, dew point 45°, current freezing level 12,000' [yesterday, it was 11,000'], ot temperature 65.7°, and the barometric pressure 29.77" and falling. |
| 8/4/2011 |
6:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/03-other than a few scattered clouds to the SW and North, the skies are basically clear on a warm summer afternoon with temperatures in the upper 80's to low 90's, with calm winds, BP 29.67" and falling. Current conditions for 8/04-scattered high level clouds (Cirrus), moderate haze, no moisture in the last 24, and little to no wind velocity. The air movement is however, from the West at 9-10 mph, wind gust: out of the WNW to 15 mph, humidity 52%, dew point 48°, current freezing level 12,500', ot temperature 67.8°, and the barometric pressure 29.75" and falling. |
| 8/5/2011 |
5:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Last evening a storm quickly developed/"blew-up" in the SW corner of ID and by 9PM, had expanded West and NW enveloping all of Eastern OR (except for the Southern portion near the NV border) and Eastern WA from the vicinity of the Tri-cities to extreme NE WA (just East of the Metaline/Metaline Falls area). Moving East by NE {why? because there was a surface high pressure SE of Salmon, ID}, it wasn't until 7A this morning, that both WA and OR were free of this storm (except for some scattered clouds in Eastern WA and NE OR). By way of mention, the occluded front that two days ago [8/03] was adjacent to SE AK, SW portion of the Yukon, and NW BC, has weakened somewhat (as the warm front component is absent from the triple point, or, the intersection of the cold, warm, and occluded fronts) with the occluded front now in Western Alberta and extending NW across extreme NE BC, while the cold front (though extending SW across BC and Vancouver Island) is moving SE across SE BC and the SE half of Vancouver Island. Mid afternoon weather for 8/04-on a very warm summer afternoon, we have clear skies, temperatures in the low to mid 90's, BP 29.63" and falling along with a pleasant breeze from several directions including the East, South, NE, and NW. Current conditions for 8/05-clear skies, moderate haze, no precipitation in the last 24, and light wind velocities. They are from the West at 7-12 mph, wind gust: out of the WNW to 16 mph, humidity 42%, dew point 47°, current freezing level 13,000, ot temperature 70.2°, and the barometric pressure 29.73" and falling.
|
| 8/6/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The NOAA's surface analysis shows that the closest "weather" to WA is in the form of a surface high pressure just North of NW WY near Bozeman, MT and a surface low pressure (NW of the Castlegar region in BC) with a cold front trailing SW over WA but moving SE across WA from the vicinity of Danville to a region between Yakima and Mt. Rainier National Park. It is therefore possible that the passing cold front is responsible for the light wind velocities in this area. Meanwhile, the NPJ is in a split flow with the bulk of the energy going into BC while the remainder is in a SW flow over North central and Southern CA thereby leaving WA and OR in the doldrums. The upper level wind chart shows a slightly different pattern with some of the energy flowing across the Gulf area and going into SE AK, and Southern BC with the remainder in a zonal flow across Northern OR and a SW flow across Southern CA. The trough in Southern BC is the result of an egg-shaped upper level low circulating in a slight SE to NW pattern with the East side extending just beyond the border into Western Alberta. Its center is also very near the central BC/Alberta border. Mid afternoon weather for 8/05-other than a few scattered clouds (Cumulus) to the SW, we basically have clear skies, temperatures in the upper 80's to low 90's, BP 29.67" and falling along with very light air movement from the NW. Current conditions for 8/06-clear skies, moderate haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 0-7 mph, wind gust: out of the NW to 16 mph, humidity 46%, dew point 47°, current freezing level 13,500', ot temperature 68.9°, and the barometric pressure 29.73" and falling. |
| 8/7/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/06-continued gorgeous summer weather with clear skies, temperatures in the upper 80's to low 90's, BP 29.67" F (falling), and minimal air movement from both the NW and North. Current conditions for 8/07-clear skies, moderate haze, no precipitation in the last 24, and increased wind velocities since earlier this morning. They are from the West at 5-11 mph, wind gust: out of the WNW to 22 mph, humidity 47%, dew point 46°, current freezing level 13,500', ot temperature 68.9°, and the barometric pressure 29.73" and falling. |
| 8/8/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
With no high pressure directly over WA, why does the state, for the most part, continue to experience pleasant summer weather? The NOAA's surface analysis show two surface high pressure areas in Alberta with the first located over South central Alberta while the other one is over SW Alberta in the Canadian Rockies near the Jasper region (This would be the 1st possibility). As to why the light wind velocities in the area, a surface low pressure is located just NE of Wenatchee. Both the upper level wind and NPJ charts show a ridge of high pressure over
BC and most of Alberta with the NPJ apex extending into the SE corner of the Yukon and the SW portion of the NW Territiories while the upper level winds apex is flat though very close to the Alberta/NW Territories border (2nd possibility). The oddity about this high pressure is the absence of pressure gradients in both the upper level wind and NPJ charts. The charts (just mentioned) remain in a split flow with the bulk of the energy going into the Yukon, SE AK, NW and SW BC and the remainder in a SW flow over North central and NW CA. Mid afternoon weather for 8/07-scattered high level clouds (Cirrus) on an other wise warm, summer afternoon with temperatures in the low to mid 90's, BP 29.63"F (falling), and light air movement from the NE. Current conditions for 8/08-scattered high level clouds (Cirrus and Cirrostratus), moderate haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 7-10 mph, wind gust: out of the WNW to 19 mph, humidity 48%, dew point 47°, current freezing level 13,000', ot temperature 67.8°, and the barometric pressure 29.74" and falling. |
| 8/9/2011 |
5:25 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/08-scattered Cirrus from the NW to the East (the only area with blemish!) on an otherwise beautiful summer afternoon. Temperatures are in the low to mid 90's, BP 26.67" R (Rising) along with light air movement from the East. Current conditions for 8/09-scattered Cirrus from the North to the East, moderate haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 6-8 mph, wind gust: out of the NW to 21 mph, humidity 42%, dew point 45°, current freezing level 13,000', ot temperature 68.9°, and the barometric pressure 29.72" and falling. |
| 8/10/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although the forecast calls for a cold front to "sweep through the region today and tonight bringing gusty winds", the closest cold front to WA extends across three Canadian provinces in a gradual NE direction though moving SE over central Alberta (were it to continue its present direction, it would miss WA altogether), Northern Saskatchewan and the NW quadrant of Manitoba. It is believed therefore, that this cold front came through last evening. There is however, a surface low (thermal trough) SE of the Oroville area and a surface trough with an arc over SW BC then extends across Eastern WA from the Molson/Chesaw area to an area near Biggs, OR. Meanwhile, the upper level wind chart shows a relatively small upper level low circulating in a general SW to NE pattern over SW BC, the SE half of Vancouver Island, and the NW quadrant of WA (including the Olympic Peninsula and south of the Puget Sound region) while the NPJ chart shows a trough sagging South from BC into WA. However, there are indications that with the passage of this upper level low (by Thursday), high pressure will begin building over WA and by the week-end it should be firmly in place resulting in warm and dry conditions. Mid afternoon weather for 8/09-clear skies, temperatures in the upper 80's to low 90's, BP 29.63" F (falling) along with a pleasant breeze from diverse directions including the NE, East, SE, SW, and the West. Current conditions for 8/10-clear skies, moderate haze, no precipitation in the last 24, and light wind velocities. They are from the West at 5-7 mph, wind gust: out of the West to 24 mph, humidity 43%, dew point 43°, current freezing level 11,000' and forecast to drop to 10,000' later this afternoon [yesterday, it was 13,000'], ot temperature 66.2°, and the barometric pressure 29.70" and falling.
|
| 8/11/2011 |
5:41 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/10-a small area of Altocumulus toward the East, scattered Cirrus, a moderate sized area of Cumulus to the SW and some Cumulus build-up to the North. Temperatures are in the low to mid 80's, BP 29.63"F along with a light breeze from the North. Current conditions for 8/11-clear skies, moderate haze, no precipitation in the past 24, and light wind velocities. They are from the West at 4-12 mph, wind gust: out of the WNW to 17 mph, humidity 52%, dew point 47°, current freezing level 12,500' [yesterday, it was at 11,000' before lowering to 10,000' later on in the afternoon], ot temperature 66.2°, and the barometric pressure 29.75" and falling.
|
| 8/12/2011 |
5:49 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The upper level wind chart shows a somewhat weaker ridge of high pressure (over the Aleutians, Bering Sea, and SW AK) with its flatter apex nudging past the Southern Seward Peninsula border (near Nome, AK) while the NPJ chart shows a strong ridge of high pressure covering most of Western AK with its apex extending NE to a point SW of Barrow, AK. Meanwhile, a large band of clouds in Western AK, are plunging South down the steep East side of the high pressure ridge (which is congruous to both the upper level wind and NPJ charts) and into the bowels of a trough, which at the present time, is well off the West coast. Nested on the NE side of the trough, is a large upper level low circulating in a general SW to NE pattern from the Gulf region to most of NW BC with three centers, two of which are in SE AK and the third one near the Yukon's SE corner and the BC border. There are indications however, that early next week, the high pressure ridge that was over WA will have moved East and that the trough (mentioned above) will now be affecting the region (WA/OR). Current conditions for 8/12-clear skies, moderate haze, no precipitation in the last 24, and very light air movement. It is from the North at 4-5 mph, wind gust: out of the NNW to 16 mph, humidity 59%, dew point 47°, current freezing level 13,000', ot temperature 61.5°, and the barometric pressure 29.85" and rising. |
| 8/13/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, high pressure has become firmly established over ID, MT, the Dakotas, and WY as well as most of Alberta and Manitoba with its apex extending into the Southern NW Territories. Although it is not directly over BC, WA, or OR, it is close enough to be influential. Meanwhile, the ridge of high pressure over the Aleutians, the Bering Sea and Strait has quickly rebuilt since yesterday and now extends North of Seward Peninsula to just beyond the Arctic Circle while its apex (in a moderate NW tilt) extends into Russia. Between these two ridge's of high pressure, and moving East by SE, is an immense trough with its Southernmost boundary adjacent to the OR coast. In the center of this behemoth, is an upper level low circulating in a slight SW to NE pattern over the NW portion of the Queen Charlottes and Southern SE AK. It is believed therefore, that the center of the low pressure is located SE of the Queen Charlottes as clouds rotate NE across central and North central BC. Mid afternoon weather for 8/12-scattered Cirrus, and directly overhead were some Cirrocumulus amid Cirrus Undulatus, scattered Cirrostratus (mostly to the East), a small area of Altocumulus from the SW to the East, and widely scattered lower level Cumulus. Temperatures are in the upper 80's to low 90's, BP 29.73"R, along with light air movement. Current conditions for 8/13-other than scattered high level clouds (Cirrus and Cirrostratus) from the South to the NE, the skies are basically clear. There has been no moisture in the past 24, light to moderate haze, and light wind velocities. They are from the WNW at 5-7 mph, wind gust: out of the NW to 16 mph, humidity 44%, dew point 45°, current freezing level 12,500', ot temperature 66.6°, and the barometric pressure 29.73" and rising.
|
| 8/15/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The ridge of high pressure that gave Eastern WA summer-like weather last Saturday (8/13), has moved East of the region and is now over the Dakotas, WI, and NE as well as all of Manitoba and most of Saskatchewan with its apex extending into the NW Territories SE sector and SW Hudson Bay (the "area" closest to Manitoba). Both the upper level wind and NPJ charts show a slight NW flow across the Gulf into BC and WA before turning SE in the form of a trough from the central BC/Alberta border to Southern WA (just North of the OR/WA border). North of this trough is a "smallish" upper level low (with its center in NW Alberta) circulating in a SW to NE pattern in extreme NW Alberta with the NE side extending into the NW Territories SW sector and the SW side flowing over extreme NE BC. West of this upper level low is yet another though much larger upper level low, with its center located over the Gulf, and circulating in a general SW to NE pattern from the Northern half of Kodiak Island, across Southern AK and into the Yukon with the NE side very close to the SW border of the NW Territories. Further South, however, both the upper level winds and NPJ are in a SW flow over Southern to Northwestern CA. Mid afternoon weather for 8/14-scattered Cirrus, Cirrostratus, two small areas of Altostratus (one of which is SW of being directly overhead, while the other is toward the East) and widely scattered lower level Cumulus on a very pleasant summer afternoon. Temperatures are in the low to mid 80's, BP 29.64"F along with light air movement from the NE. Current conditions for 8/14-widely scattered Cirrus and lower level Cumulus, light to moderate haze, no precipitation in the last 24, and light wind velocities. They are from the WNW at 2-4 mph, wind gust: out of the NW to 15 mph, humidity 41%, dew point 41°, current snow level 8000' [yesterday, it was 9500'], ot temperature 67.5°, and the barometric pressure 29.75" and falling. |
| 8/16/2011 |
5:20 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday's "smallish" upper level low with its center in extreme NW Alberta, has moved East by NE to the border of extreme NE Alberta and the NW Territiories with the elongated upper level low circulating in a general SW to NE pattern into the NW territories central region. In addition, yesterday's trough (with the Southernmost sag just North of the WA/OR border and believed to be responsible for this morning's cooler temperature) has moved East into MT. Meanwhile, the configuration of the upper level low in the Gulf region has noticeably changed since yesterday (with its center moving SW from the Gulf to just off the SE AK coast) circulating in a SW to NE pattern over BC, most of the Yukon's Southern half, SE AK and the NW portion of the Gulf. So, with no definite high pressure over the region, what is responsible for the gorgeous weather today? Although there is some ridging over North to Southern BC, the NOAA's surface analysis shows an immense "bubble" of high pressure over SW to NW MT, the Northern half of ID, Southern BC, and finally, features a classic ridge of high pressure over Eastern WA, with its apex extending into Southern BC. Mid afternoon weather for 8/15-aside from widely scattered clouds (all Cumulus with the largest concentration from the SW to the South)
clear skies prevail with temperatures in the low to mid 80's, BP 29.81"R along with a pleasant breeze from the NW on a gorgeous summer afternoon. Current conditions for 8/16-clear skies (except for scattered Cirrus from the North to the East), light haze, no precipitation in the last 24, and light air movement. It is from the WNW at 4-5 mph, wind gust: out of the NW to 13 mph, humidity 55% (yesterday, the reading was 41%), dew point 41°, current freezing level 11,500'[yesterday, it was 8000'], ot temperature 57.6°, and the barometric pressure 29.93" and rising. |
| 8/17/2011 |
5:11 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The upper level wind chart shows a NW flow over SW AK and from the inner to middle Aleutians before turning to a zonal flow over BC while the NPJ is in a distinctive NW flow over SW AK and inner Aleutians before turning to a zonal flow over central BC. Why the description? A "remnant" band of clouds are crossing SW AK, the Kenai Peninsula, Kodiak Island and the inner Aleutians into the Gulf, and as this direction is congruous to the NPJ flow (mentioned above) it is forcing a trough {moving East by SE} ahead of the "band" in an Easterly direction across the Queen Charlottes into central BC. In addition, the wave on the trough's SE side is also being forced in an East by SE direction from NW Vancouver Island across central BC and into North central and Northwestern Alberta. So, with a zonal flow across BC, and a SW flow over Northern CA and SE OR, the question is posed, once again, why is the region (WA) enjoying another gorgeous summer day? The ECMWF model shows a ridge of high pressure over the ocean off the NW OR coast; however, there are indications that it will shift NE from its present location and be adjacent to the WA coastline by sometime tomorrow. Mid afternoon weather for 8/16-clear skies on a simply gorgeous summer afternoon with temperatures in the mid to upper 80's, BP 29.80"F along with a pleasant and refreshing breeze from diverse directions including the NW, East and SE. Current conditions for 8/17-clear skies, light to moderate haze, no precipitation in the last 24, and minimal air movement. It is from the North at 7-9 mph, wind gust: out of the NNW to 15 mph, humidity 45% (yesterday, the reading was 55%) dew point 37°, current freezing level 12,500', ot temperature 58.1°, and the barometric pressure 29.88" and falling. |
| 8/18/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/17-no change from earlier this morning or yesterday for that matter, as clear skies continue to prevail with temperatures in the upper 80's to low 90's, BP 29.75"F along with a pleasant breeze from the NE. Current conditions for 8/18-except for scattered Cirrus in the West and NW and a small area of Cirrostratus in the East, the skies are basically clear. However, there is moderate haze/smoke in the air as a result of fires in the vicinity. No precipitation has occurred in the past 24, and there is little to no air movement. It is from the West at 0-2 mph, wind gust: out of the WNW to 18 mph, humidity 42%, dew point 43°, current freezing level 12,000', ot temperature 64.4°, and the barometric pressure 29.90" and rising. |
| 8/19/2011 |
5:38 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/18-although it is a gorgeous summer afternoon, there are several cloud types including scattered Cirrus, a relatively large area of Cirrostratus and several scattered Altocumulus Lenticularis from the NW to the NE as well as widely scattered lower level Cumulus. Temperatures are in the upper 80's to low 90's, BP 29.79"R along with minimal air movement. Current conditions for 8/19-mostly cloudy skies (Altocumulus) with partial clearing from the SW to the South. Interestingly, the present cloud cover began developing late last evening (around midnight) over central WA and continued "growing" in a restricted East/West direction throughout the night and gradually moved over this observation from the East. There has been no precipitation in the last 24 (or for the month of August), moderate haze/smoke in the air as a result of a fire in the Tumwater Canyon area near Leavenworth, and little to no air movement. The air movement that we do have however, is from the NNW at 2-7 mph, wind gust: out of the NW to 14 mph, humidity 63% (yesterday, the reading was 42%), dew point 47°, current freezing level 12,500', ot temperature 63.1°, and the barometric pressure 29.88" and falling. |
| 8/20/2011 |
5:04 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/19-although the clouds of earlier this morning have cleared off, there is now a small band of clouds both in the NW and also in the North (all Cumulus!), a much large band of the same cloud type in the West and widely scattered Cumulus to the East on an otherwise beautiful summer afternoon. Temperatures are in the upper 80's to low 90's, BP 29.80"R along with minimal air movement. current conditions for 8/20-clear skies, no precipitation in the last 24, moderate to bad haze/smoke in the air as a result of the large fire in the Tumwater Canyon area near Leavenworth and minimal air movement. It is from the NNW at 4-7 mph, wind gust: out of the NW to 12 mph, humidity 59%, dew point 49°, current freezing level 14,000' (yesterday, it was 12,500'), ot temperature 61.7°, and the barometric pressure 29.83" and rising. |
| 8/21/2011 |
5:29 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Activity is abundant in the Gulf and elsewhere this morning beginning with an immense trough (with tight pressure gradients) moving in an East by NE direction toward Southern BC and WA. Conforming to the steep SW to NE flow of both the upper level winds and NPJ, a wave in North central BC is being forced in an East by NE direction into the NW Territories SW section and NW Alberta (as it attempts to ride up and over the ridge of high pressure currently in place over WA) while the SE portion of this wave is simultaneously "pushing" an increasing amount of water vapor over WA from West to East. Meanwhile, North of the trough (mentioned above) is an occluded front with the NW part moving North by NE into Southern AK and the Yukon while the remainder is moving over SE AK toward NW BC. The warm front {also associated with the occluded front and moving East} extends South from the Prince Rupert area to just off the WA coast while the cold front extends from the area mentioned above in a gradual SW "arc" over the Pacific ocean and is moving in a general SW to Southerly direction. The Canadian model shows a pear-shaped closed upper level low circulating in a slight SW to NE pattern from North central CA to SW OR, while the upper level wind chart shows the same closed ull circulating in a slight SW to NE pattern from North central to North western CA. Mid afternoon weather for 8/20-clear skies, temperatures in the low to mid 90's along with a gentle breeze from diverse directions including the NE, East and South. Current conditions for 8/21-widely scattered mid and high level clouds on an otherwise mostly sunny day, no precipitation in the last 24, moderate haze/smoke, and very little air movement. It is from the North at 5-7 mph, wind gust: out of the NNW to 13 mph, Humidity 49%, dew point 46°, current freezing level 14,000', ot temperature 62.6°, and the barometric pressure 29.71" and falling. |
| 8/22/2011 |
5:07 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although the ridge of high pressure is close enough to be influential to WA, it is not quite as strong as yesterday's as the West side of it has begun to break down and is now in a NE tilt over Alberta, most of Manitoba as well as ID, MT, the Dakotas and Eastern WA with its apex nudging into the SE corner of the NW Territories and the SW corner of Nunavut,Canada. Both the upper level wind and NPJ charts show a zonal flow South of the Gulf then turning to a gradual SW flow over BC. This is evidenced by the Geostationary Satellite images including the longwave, water vapor, and visible images cites as "clouds" quickly move South of the Gulf toward South central and Southwestern BC where they then move in an East by NE direction. The Eastward moving clouds appear to be a weak disturbance that is lying in a general SW to NE direction and extends NE from just off the OR coast, to across NW WA and Vancouver Island into SW BC while the clouds which now prevail in this area are associated with a larger "disturbance" in Southeastern and Eastern BC (near the Alberta border) now moving NE up the West side of the high pressure ridge (mentioned above). Mid afternoon weather for 8/21-other than a rather lengthy and concentrated band of Cirrus and Cirrostratus extending from the SW to the NE, scattered clouds of the same cloud types prevail on an otherwise mostly sunny afternoon. Temperatures are in the mid to upper 90's, BP 29.62"F along with minimal air movement from both the NE and East. Current conditions for 8/22-scattered mid and high level clouds, light to moderate haze, no precipitation in the last 24, and minimal to light wind velocities. they are from the West at 2-3 mph, wind gust: out of the WNW to 16 mph, humidity 44%, dew point 48°, current freezing level 13,000' [yesterday it was 14,000'], ot temperature 71.4°, and the barometric pressure 29.65" and falling. |
| 8/23/2011 |
5:40 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Interestingly, from approximately 4AM to 9:15AM, a very persistent disturbance extended Eastward from Okanogan county into the northern ID panhandle and North into Southern BC along with a SW extension between Yakima and Mount Rainier National Park is finally in the process of dissipating. Meanwhile, both the upper level wind and NPJ charts show a deep trough (South Of the Gulf region) moving East while its East side moves East by NE as it rides up and over a relatively weak and flat ridge of high pressure into central and Northern BC. This ridge is over most of BC (except for the NW section) and WA. Indications are that by tomorrow, it will be much stronger {in contrast to the present day} resulting in warmer and drier conditions. The NOAA surface map show a few surface lows and stationary fronts; however, the focus will be on the one (stationary front) in WA which extends in a SW to NE direction (from an area SE of Wenatchee to the Metaline Falls region) and is only a part of a much larger occluded front with its origin on the Northwestern shores of Nunavut, Canada. Mid afternoon weather for 8/22-on a somewhat humid and mostly cloudy afternoon, we have scattered Cirrus (along with a moderate halo), Cirrostratus, Altostratus {the dominant mid-level cloud type} and a small area of Altocumulus toward the East. Temperatures are in the upper 80's to low 90's, BP 29.64"F along with light air movement from the NE. Current conditions for 8/23-a few widely scattered Cumulus in the North and South, no precipitation in the last 24, light haze, and minimal to light wind velocities. They are from the SSW at 1-3 mph, wind gust: out of the SW to 13 mph, humidity 70%, dew point 55° (yesterday, the readings were 44% and 48° respectively), current freezing level 13,000', ot temperature 64.6°, and the barometric pressure 29.80" and rising. |
| 8/24/2011 |
5:27 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/23-the clouds of earlier this morning have long since cleared and this area anyway, is enjoying another gorgeous summer afternoon with clear skies, temperatures in the mid 80's to low 90's, BP 29.74"R along with light air movement from both the SE and also the NE. Current conditions for 8/24-clear skies, light to moderate haze, no precipitation in the last 24, and minimal to light wind velocities. They are from the WNW at 5-10 mph, wind gust: out of the NW to 13 mph, humidity 54% (yesterday, it was 70%), dew point 51°, current freezing level 14,500' [yesterday, it was 13,000'], ot temperature 65.8°, and the barometric pressure 29.77" and rising.
|
| 8/26/2011 |
5:14 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/25-scattered Cumulus in the West,North and South on an otherwise beautiful and very warm late August summer afternoon. Temperatures are in the mid to upper 90's, BP 29.68"F, along with occasional minimal air movement from the SW. Current conditions for 8/26-other than mid level clouds "moving in" from the South (they are associated with a weak disturbance that "blew -up" in NW OR and moving in a North by NE direction, it was extending in a SW to NE direction from the Dalles region to the Yakima area and with one rain band moving in a Northerly direction toward Ellensburg. Although weak in stature, it packs quite a punch for its size) the skies are basically clear. The haze is light to moderate, no precipitation in the last 24, and minimal air movement. This light air movement is from the North at 5-7 mph, wind gust: out of the NNW to 14 mph, humidity 58%, dew point 52°, current freezing level 13,000', ot temperature 68°, and the barometric pressure 29.79" and rising. |
| 8/27/2011 |
5:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
There are a few events worth noting this morning. The first of which is the immense amount of cooler moisture/water vapor being pumped in a North by NE direction across Southern to North central CA, NV, Eastern OR, Southern ID, and just clipping the SE corner of WA before turning to the SE. It would appear therefore, that this moisture/water vapor is associated to a "system" in Northern Mexico. The East and NW side is the area of interest as a "disturbance" moves North by NE from South central CA to the Lake Tahoe area then crosses Western and Northern NV into Eastern OR and most of Southern ID while just brushing the SE corner of WA. Another area of interest, is a depression on the SW OR/NW CA border. Indications are however, that by tomorrow, a trough will have developed with a slight SE sag over NW CA and the pesky depression will have moved slightly NE to West central OR. As the day progresses this trough becomes less pronounced as the "depression" now takes up residence over the WA/OR border near The Dalles region. By Monday, another small trough will have developed, with a Southern sag into NE OR, and the "depression now over SE WA. Current conditions for 8/27-clear skies, light to moderate haze, no precipitation in the last 24, and minimal to light air movement. These light velocities are from the West at 3-4 mph, wind gust: out of the WNW to 13 mph, humidity 46%, dew point 48°, current freezing level 14,000'[yesterday, it was 13,000'], ot temperature 69.1°, and the barometric pressure 29.78" and falling.
|
| 8/28/2011 |
5:53 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/27-HOT! with clear skies on a very warm August afternoon indeed. Temperatures are in the mid to upper 90's, BP 29.69"R along with minimal to light wind velocities from various directions including the NW, North, NE, East, SE, and occasionally the SW. Current conditions for 8/28-small areas of Cirrus and Cirrocumulus in addition to scattered Altocumulus, light to moderate haze, no precipitation in the last 24 (and there's a good chance that the month of August will conclude with no measurable precipitation (at this observation site anyway), and minimal to light wind velocities. They are from the WNW at 6 mph, then from the North at 3-7 mph, wind gust: out of the NNW at 22 mph, humidity 45%, dew point 45°, current freezing level 16,000 (this is the highest level so far this summer. Yesterday, it was 14,000'), ot temperature 65.3°, and the barometric pressure 29.80" and rising. |
| 8/29/2011 |
5:32 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The upper level low that two days ago (8/27) was on the Northwestern coast of OR, and forecast to move "East across NE OR and SE WA then move out of North ID into Western MT by this afternoon" appears to have already taken place. There seems to be a slight disagreement as to the exact location of the weak upper level low. The GFS model, has it on the SW ID/MT border, while the WRF/NAM model places it further East and adjacent to the NW "corner" of WY. Meanwhile, yesterday's ridge of high pressure that gave the area very warm weather, has moved East of the region (WA),though close enough to be influential, and is now over Saskatchewan, most of
Alberta (except for the NW quadrant) and Manitoba (except for the NW "section") as well as Eastern MT and the Dakotas with its apex extending into the NW Territories SE region. East of this high pressure ridge, is a deepening trough (according to the WRF/NAM model) sagging down the BC coast. This trough will become a major player in our weather (WA) for the next few days as it will bring much cooler temperatures and breezy conditions. Mid afternoon weather for 8/28-scattered Cirrus and lower level Cumulus with a small area of Cirrostratus to the NE on a very warm late August afternoon.
Temperatures are in the mid to upper 90's for the second consecutive day, BP 29.64"F along with minimal to no air movement. Current conditions for 8/29-scattered Cirrostratus and Cumulus on a mostly sunny day, light to moderate haze, no precipitation in the last 24 and minimal to light wind velocities. They are from the WNW at 8-9 mph, wind gust: out of the NW to 23 mph, humidity 41%, dew point 48°, current freezing level 14,000' [yesterday, it was 16,000'], ot temperature 72.9°, and the barometric pressure 29.62" and falling.
|
| 8/30/2011 |
6:12 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The weak, pesky low pressure that yesterday, was adjacent to the NW side of WY, remains alive and well and appears to have strengthened to some extent now with a shallow trough (the bulk of which is in NE MT) and NW ND. The center is located in Northeastern MT very near the ND border. Meanwhile, the ridge of high pressure is well East of our region (WA) over Manitoba and most of Saskatchewan (except for the NW quadrant) with its apex extending into the extreme SE corner of the NW Territories and Southern Nunavut, Canada. West of this high pressure ridge, is both an upper level low and also a trough. The GFS model shows a relatively small upper level low in extreme NW Alberta, while the WRP/NAM model shows the same upper level low as somewhat larger circulating in a slight SW to NE pattern with the center on its Eastern boundary on the border of Alberta and the NW Territories. As far as the trough is concerned, the ECMWF model shows it in a slight SW sag from North central BC to the NW WA coast. However, by tomorrow, it will have deepened to North central CA, although not quite "centered" under WA, OR, or CA. Mid afternoon weather for 8/29-numerous scattered and isolated pockets of Altocumulus on a mostly sunny afternoon with temperatures in the low to mid 90's, BP 29.57"F along with a nice breeze from the NW. Current conditions for 8/30-clear skies (except for some scattered Cirrus to the South), light to moderate haze, no precipitation in the last 24, and minimal to light wind velocities. They are from the West at 6-10 mph, wind gust: out of the WNW to 19 mph, humidity 40%, dew point 43°, current freezing level 11,000' [yesterday, it was at 14,000'], ot temperature 68.9°, and the barometric pressure 29.67" and falling. |
| 8/31/2011 |
5:01 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/30-basically two cloud types graced the skies on an otherwise sunny afternoon. The first being a large area of Cirrostratus extending from the SW to the SE while from the NW to the NE was a much smaller version of the same cloud type. Not to be out done, the second cloud type consisted of a small deck of Cumulus to the South, while from the North to the NE was a much larger deck of the same cloud type. Temperatures are in the low to mid 80's (or, about ten degrees cooler than yesterday at this time), BP 29.58"R along with a pleasant and refreshing breeze from various directions including the NW, NE, East, and occasionally the SW. Current conditions for 8/31-scattered Cumulus and several Cumulus cloud decks, light to moderate haze, no precipitation in the last 24, and minimal to light wind velocities. They are from the WNW at 6-9 mph, wind gust: out of the NW to 16 mph, humidity 49%, dew point 42°, current snow level 8000' [yesterday, it was at 11,000'], ot temperature 63°, and the barometric pressure 29.66" and rising. Here are some interesting stats for August- 1) total rain fall: 0.00", 2) number of days with no precipitation: 31, 3) high BP: 29.93" on 8/16, 4) low BP: 29.62" on 8/29, 5) date with low BP and no precipitation: 29.62" on 8/29, 6) date with high BP and precipitation: since it did not rain the entire month, this event did not happen, 7) average BP: 29.76", 8) average morning temperature: 65.9°, 9) high morning temperature: 72.9° on 8/29, and 10) low morning temperature: 57.6° on 8/16. |
| 9/1/2011 |
6:04 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 8/31-clouds (all Cumulus) are moving over the area from the West, a large cloud deck extends from the SW to the South and is somewhat threatening in appearance. However, from the North to the SE, is an immense cloud deck featuring Cumulus Congestus, a shower on the NE side of Badger Mountain, along with a very ominous appearance to the East though no lightening or thunder was observed or heard. Temperatures are in the upper 70's to low 80's, BP 29.68"R along with a pleasant breeze from the NW and SW. Current conditions for 9/01-scattered Cirrus in the North and East and lower level Cumulus in the NW and North on an otherwise mostly clear and sunny morning. The first day of September features light to moderate haze, no precipitation in the last 24, and minimal to no wind velocity. What velocity there is, is from the North at 1-2 mph, wind gust: out of the NNW to 16 mph, humidity 57%, dew point 42°, current freezing level 10,000' [yesterday, it was 8000'], ot temperature 58.1°, and the barometric pressure 29.93" and rising. |
| 9/2/2011 |
5:44 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The trough that yesterday had begun to move East from our region (WA), is now in MT and in the process opened the door to a NW flow across WA for today and tomorrow after which, a ridge of high pressure currently off the West coast of BC with its apex extending into the Eastern Gulf (adjacent to SE AK), will slowly move East and simultaneously strengthen as it finally moves over the PNW by sometime Saturday resulting in warmer conditions for the next few days before both the NPJ and upper level winds move well North of WA in a SW flow over BC. Meanwhile, behind this high pressure ridge (mentioned above), is a relatively deep trough with tight pressure gradients extending South of the inner to middle Aleutians. Within this trough is an upper level low circulating in a general SE to NW pattern across the inner Aleutians adjacent to Kodiak Island. Interestingly, behind this trough, is yet another ridge of high pressure. Mid afternoon weather for 9/01-scattered Cirrus, Cirrostratus (from the North to the NW) and Altocumulus on an otherwise very pleasant sunny afternoon. Temperatures are in the upper 70's to low 80's, BP 29.83"R along with a light breeze from the SE. Current conditions for 9/02-clear skies (except for widely scattered Cirrus and Cumulus clouds), light haze, no precipitation in the past 24, and minimal to light wind velocities. They are from the WNW at 4-7 mph, wind gust: out of the NW to 17 mph, humidity 44% (yesterday, the reading was 57%), dew point 39°, current freezing level 11,500' [yesterday, it was 10,000'], ot temperature 63.9°, and the barometric pressure 29.93" and rising. |
| 9/3/2011 |
5:45 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The upper level trough that moved East of the region (WA) into MT, has deepened and broadened somewhat with the southernmost boundary now sagging across central WY. This action will keep WA in a NW flow for today, after which, a strong ridge of high pressure will move over the PNW resulting in drier and warmer conditions. Currently, this ridge is over BC [though close enough to WA/OR to be influential ] with its apex extending NW into most of the Yukon (except for the Western and Northern areas) and the NW Territories SW region. Meanwhile, both the upper level wind and the NPJ charts are in agreement to the steep SW flow into NW BC as evidenced by a wave moving up this steep flow along the East side of a relatively deep trough moving East by NE (with its southernmost boundary South of the Gulf and well off the WA/OR coasts) and over the high pressure ridge (mentioned above) into SE AK, Northern BC, the Yukon's SE quadrant and the NW Territories SW region. Mid afternoon weather for 9/02-on a beautiful late summer afternoon, we have clear skies, temperatures are in the low to mid 80's, BP 29.93"R, along with a nice breeze from the NE. Current conditions for 9/03-clear skies, light to moderate haze, no precipitation in the last 24, and minimal to no air movement. What movement there is, is from the North at 4 mph, wind gust: out of the NNW to 11 mph, humidity 64% (yesterday, the reading was 44%), dew point 42°, current freezing level 14,000' [yesterday, it was 11,500'], ot temperature 53.8°, and the barometric pressure 30.09" and rising {interestingly,the last time the reading was this high occurred 91 days ago on 6/03 when it was 30.15" and rising!}. |
| 9/4/2011 |
5:32 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/03-clear skies,temperatures are in the low to mid 80's, BP 29.98"R along with a cool breeze (that varied from minimal to light in velocity) from diverse directions including the NE, SE, and SW. Current conditions for 9/04-Cirrus and Cirrostratus are in abundance except for the West, where the skies are mostly clear. Once again, there is light to moderate haze, no precipitation in the last 24, and minimal to light wind velocities. They are from the North at 3-4 mph, wind gust: out of the NNW to 11 mph, humidity 50%, dew point 35° (yesterday, the readings were 64% and 42° respectively), current freezing level 14,500', ot temperature 52°, and the barometric pressure 29.89" and falling. |
| 9/5/2011 |
6:02 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday, the forecast called for "warming to begin in earnest today (or 9/04). This usually suggests a strengthening ridge of high pressure and a corresponding rise in BP. Such has not been the case in this area, in fact, the BP has fallen .035" since 9/03. Why? One possibility is a disturbance on the OR/CA border moving gradually North before turning NE (earlier this morning) toward NE OR and looks to clip the SE corner of WA (1st possibility). This same site {UW IR satellite image} shows a small disturbance located at 121W and 50N in Southern BC, with pencil thin clouds adjacent to it moving East and trailing across Northern WA (or, from Whatcom to Okanogan counties). This would be the 2nd possibility. Both the upper level wind and NPJ charts show a SW flow into BC; however, the former [ulw] shows a relatively flat ridge over WA, ID and MT while the latter (NPJ) shows only slight ridging over the area (WA). The 3rd possibility. So, the big warm-up appears to commence on 9/07 according the the ECMWF model, with strong high pressure to continue through the week-end. Current conditions for 9/05-clear skies (except for some widely scattered Cirrus in the NW and North), moderate to bad haze/smoke, no precipitation in the last 24, and minimal to no air movement. It is from the WNW at 0-3 mph, wind gust: out of the NW to 16 mph, humidity 50%, dew point 40°, current freezing level 13,500' {another possibility why there has not been a genuine warm-up}, ot temperature 55.2°, and the barometric pressure 29.74"and rising.
|
| 9/6/2011 |
5:08 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Today's weather event consists of a very deep and behemoth trough with very tight pressure gradients and a SW sag. To give one a better picture of how immense this trough is, its West side is moving South over the outer Aleutians while the East side is moving NE into SE AK and extreme NW BC. Another perspective that makes this "trough" even more impressive is the configuration of the NPJ. There are indications that later today, and continuing through 9/08, the first of two very strong ridges of high pressure will be in place. How? The NPJ will migrate well North of WA in a SW flow over SE AK and NW BC, the Yukon's SE quadrant with its apex extending into the Northern sector of the NW Territories (except for the NW quadrant). The second ridge of strong high pressure is over NE Russia with its apex extending NE over the Chukchi Sea, NW of AK. The result of these two ridges gives this behemoth trough a very ominous as well as impressive appearance indeed. Near the NE side of this "trough" is an upper level low along with an occluded front in the same locale. Mid afternoon weather for 9/05-clear skies, temperatures in the low to mid 90's, BP 29.67"F along with a coolish though refreshing light breeze from diverse directions including the NE, East, SE and occasionally the SW. Current conditions for 9/06-clear skies, light to moderate haze, no precipitation in the last 24, and minimal to no air movement. It is however from the WNW at 2 mph, wind gust: out of the NW to 16 mph, humidity 49%, dew point 44° (both the humidity and dew point readings are difficult to fathom with the current conditions being so dry), current freezing level 13,500', ot temperature 63.1°, and the barometric pressure 29.88" and rising. |
| 9/7/2011 |
5:59 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although the ECMWF, GFS, and NAM models are all in agreement regarding the strong high pressure over the PNW, a weak upper level trough (adjacent to the Northern CA coast) is moving slowly East by NE toward SW OR. Interestingly, the largest band of clouds associated with this "trough" are also moving NE to the CA/OR border to finally extend from extreme NE CA along the CA/OR border into SW OR (the Brookings area). There is a system (adjacent to the Alberta border) in NE BC that appears to be "hanging on for dear life" and simultaneously weakening. This is because the NPJ is flowing over the area between 70-100+ knots. Then there is the mammoth trough with a few minor changes since yesterday. Although the trough has deepened, and the sag has changed from a SW to Southern sag, there is disagreement between the GFS and NAM models. The GFS model shows a relatively small trough extending just SE of the inner to middle Aleutians with a "depression" centered over Kodiak Island, while the NAM model features an upper level low circulating in a SW to NE pattern from the Western Gulf to Southern and SW AK with the center on Northern Fognak Island (just NE of Kodiak Island). Mid afternoon weather for 9/06-on a gorgeous, late summer afternoon, the skies are clear, temperatures are in the upper 80's to low 90's, BP 29.88"R along with minimal air movement from the East. Current conditions for 9/07-clear skies, light to moderate haze, no precipitation in the last 24 and minimal to no air movement. These light velocities are from the North at 2 mph, wind gust: out of the NNW to 15 mph, humidity 47%, dew point 40°, current freezing level 14,000', ot temperature 57.2°, and the barometric pressure 30.01" and rising. |
| 9/8/2011 |
5:50 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/07-clear skies (except for thin, Cirrus-like smoke "clouds" that extend in an arc from the SW to the NE), temperatures are in the mid to upper 90's, BP 29.88"F along with cool, refreshing light air movement from diverse directions including the NW, NE, East and SE. Current conditions for 9/08-mostly sunny skies with scattered Cirrus and Altocumulus (though earlier this morning, "soft"
Altocumulus Castellanus clouds were observed), light to moderate haze, no moisture in the last 24, and very little to no air movement. These minor velocities are from the WNW at 0-2 mph, wind gust: out of the NW to 13 mph, humidity 46%, dew 43°, current freezing level 12,500' [yesterday, it was 14,000'], ot temperature 60.8°, and the barometric pressure 29.99" and rising. |
| 9/9/2011 |
5:42 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although strong high pressure remains in place over the PNW, the ridge axis is in Western MT. Interestingly, the GFS, NAM 44 and Canadian models show a somewhat "arrow"-shaped surface high pressure (the center of which is located on the ND/Saskatchewan border) over Southern Saskatchewan, SW Manitoba and ND with the apex extending over the SW corner of Hudson Bay. Here is where the GFS and NAM 44 models are in slight disagreement. In brief, the NAM 44 features a small trough (with a southern sag) under Eastern WA, the Northern panhandle of ID and NW MT whereas the GFS does not show any sign of a trough. In addition, the NOAA surface analysis shows a low pressure (or a thermal low) SW of the Tri-cities area near the WA/OR border along with a surface trough extending from the SE to the NW across the South Puget Sound area, the Olympic Peninsula and into the SE half of Vancouver Island. Although the size of the mammoth trough {located well South of the Gulf} has been impressive the past few days, it is beginning to show signs of weakening. Mid afternoon weather for 9/08-mostly sunny skies though with an array of different cloud types including scattered Cirrus,Cirrostratus, Altocumulus (along with some "soft" Altocumulus Castellanus toward the East) and Altostratus on a smokey/hazy late summer afternoon. Temperatures are in the upper 80's to low 90's, BP 29.88"R along with calm winds. Current conditions for 9/09-clear skies, moderate to bad haze/smoke, no precipitation in the last 24, and little to no air movement. The meager velocity is from the North at 3 mph, wind gust: out of the NNW to 12 mph, humidity 48%, dew point 47°, current freezing level 14,000' [yesterday, it was 12,500'], ot temperature 63°, and the barometric pressure 29.98" and rising. |
| 9/10/2011 |
5:35 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Both the upper level wind and NPJ charts are in agreement regarding the very steep SW flow (well off the WA/OR coasts) before relaxing somewhat in severity over SE AK, the Queen Charlottes and BC (except for the extreme Northern area adjacent to the Yukon and NW Territories borders). In addition, both (the upper level winds and NPJ) have flattened slightly resulting in a flow just SE of yesterday's steep NE flow across SE AK, NW BC and the Yukon's SE quadrant. Although high pressure remains over the PNW, it does not appear to be quite as strong as in the past few days. Why? One possibility could be its relative flatness and not the usual strong ridge of high pressure that would feature a nice hyperbola shape over the PNW. The mammoth and impressive trough of the past few days{located well South of the Gulf} is now but a remnant, has moved from a SW to a slight SE sag, and the pressure gradients that remain are tight. Within in it, is a "cucumber"-shaped upper level low circulating in a gradual South to NE pattern with the center in the NE end (or, South of Kodiak Island). Between this trough and a much larger one lurking WNW of the outer Aleutians, some minor ridging is taking place with its apex extending NE over the middle Aleutians. Mid afternoon weather for 9/09-continued clear skies on a very warm afternoon, temperatures are in the low to mid 90's (and expected to continue warming another two to four degrees), BP 29.85"R along with just enough air movement to know the direction was from the NE. Current conditions for 9/10-clear skies, light to moderate haze, no precipitation in the last 24, and minimal to no air movement. This meager velocity is from the WNW at 4-5 mph, wind gust: out of the WNW to 14 mph, humidity 46%, dew point 44°, current freezing level 14,500', ot temperature 62.8°, and the barometric pressure 29.85" and falling. |
| 9/11/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/10-scattered Cirrus from the West to the NE on an otherwise sunny and very warm September afternoon. Temperatures are in the low to mid 90's (and like yesterday, are expected to warm an additional two to four degrees), BP 29.72"F along with minimal air movement from various directions including the NE, SE, and South. Interestingly, the usual spectacular view of Glacier Peak to the NW was obstructed by the moderate to bad smoke/haze in the atmosphere. Current conditions for 9/11-clear skies, and, as already mentioned above, moderate to bad smoke/haze in the atmosphere, no precipitation in the last 24, and minor wind velocities. They are from the WNW at 2-7 mph, wind gust: out of the NW to 12 mph, humidity 46%, dew point 43°, current freezing level 14,500', ot temperature 61.9°, and the barometric pressure 29.74" and falling. |
| 9/12/2011 |
5:43 AM |
0.00 |
0.0 |
M |
0.0 |
M |
It looks as though the very warm weather in the PNW will remain in place for one more day as both the GFS and NAM 44 models show what appears to be a surface high pressure (over WA and the West coast of BC with its apex extending just beyond SE AK into extreme NW BC) as well as an upper level ridge of high pressure with its apex extending well North of the Yukon, AK, the NW Territories NW section to the Beaufort and Chukchi Seas and quite possibly the Southern fringes of the Arctic Ocean. Meanwhile, the Canadian, ECMWF, NPJ, GFS, and the NAM 44 models continue to show high pressure over WA through Thursday, though it will likely not be as strong nor produce the very warm temperatures that were experienced by this area for the last two weeks. SW of the high pressure (the first one mentioned above) is a trough with a SE sag, and a relatively large "egg-shaped" upper level low circulating in a general SW to NE pattern with both the upper level low and its center located well to the SE of Kodiak Island. Mid afternoon weather for 9/11-scattered Cirrus toward the SE and from the West toward the East on an otherwise sunny and very warm late summer afternoon. Temperatures are in the mid to upper 90's, BP 29.62"F along with minimal air movement from the SE. Current conditions for 9/12-clear skies (except for one Cirrus cloud toward the South!), the air quality is poor (to such an extent that earlier this morning the details of Badger Mountain to the East, could not be distinguished), no precipitation in the last 24 and minimal air movement. It is from the North at 4 mph, wind gust: out of the NNW to 15 mph, Humidity 44%, dew point 44°, current freezing level 14,500', ot temperature 62.1°, and the barometric pressure 29.77" and falling.
|
| 9/13/2011 |
6:18 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Although the forecast calls for "no strong cold fronts are anticipated", NOAA's national map shows two cold fronts adjacent to WA. The first one extends in general NE to SW direction from Southern BC (the Williams Lake region) to extreme NE WA, across NW and SW MT while simultaneously moving SW toward WA. The other one is moving East by SE over SW BC and the NW half of Vancouver Island as it approaches WA from the NW. There are indications however, that additional cold fronts will either be over or approaching WA from early this week through the up-coming week-end (or from 9/13-9/18). In other words, this area will expreience a gradual cooling. Meanwhile, the clouds over this area (and across the Northern tier of WA) are associated with a "system" moving East by SE across Southern BC. Mid afternoon weather for 9/12-clear skies on another very warm late summer afternoon {only 11 more days until the first day of fall!}. Temperatures are in the mid to upper 90's, and there has been a slight increase in wind velocity from the NE since earlier in the day. Current conditions for 9/13-scattered Cirrus and Cirrostratus along with a few Contrails, light to moderate haze (an improvement over yesterday's poor air quality), the days of no precipitation continue, and minimal to light wind velocities. They are from the North at 1-4 mph, wind gust: out of the NNW to 16 mph, humidity 30%, dew point 38° {yesterday, the readings were 44% and 44° respectively. Also, the last time both readings were in the "30's" was on 6/23 when the humidity was 37% and the dew point was 33°}, current freezing level 14,000', ot temperature 64.4°, and the barometric pressure 29.81" and rising. |
| 9/14/2011 |
5:23 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Instead of "additional cold fronts being over or approaching WA from Tuesday through Sunday (or from 9/13-9/18)" as stated yesterday, it appears, according to the NOAA's National Maps, that there will be only one moving SW affecting NW WA first before continuing its SW trek across WA (except for the SE quadrant) by Friday. Meanwhile, the EMCWF model shows an immense trough plunging SW over some of the Midwest states including ND, MN, WI, and MI which would characterize an Arctic outbreak during the winter months. SW of the Gulf, is a much smaller trough with a SE sag and within it is a "depression" over the SE side of Kodiak Island. Sandwiched between these two troughs, is a ridge of high pressure that will give the PNW ( BC, WA and OR) another day of warm and dry weather before it begins to break down and the ridge axis moves from Western WA to Western ID by sometime tomorrow. Mid afternoon weather for 9/13-scattered Cirrus (some of which are "streaky" in appearance directly overhead), Cirrostratus and two small areas of
Altocumulus toward the South. Temperatures are in the low to mid 90's, BP 29.75"R along with minimal to light air movement from the South. Current conditions for 9/14-scattered Cirrus, Cirrocumulus, Cirrus Undulatus, Cirrostratus and a few Contrails on an otherwise mostly sunny morning. There has been no precipitation in the last 24, the haze is light, along with meager wind velocities. They are from the WNW at 4-5 mph, wind gust: out of the NW to 19 mph, humidity 47% {yesterday, it was 30%}, dew point 40°, current freezing level 13,000 [yesterday, it was 14,000'. The forecast calls for these levels to continue their downward trend until the start of the week-end when they will be around 8000'], ot temperature 60.6°, and the barometric pressure 29.76" and rising. |
| 9/15/2011 |
5:17 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/14-widely scattered Cirrus and Cirrostratus mainly from the North to the SE on an otherwise mostly sunny afternoon. Temperatures are in the upper 80's to low 90's (or about five degrees cooler than yesterday at this time). BP 29.61"F along with minimal air movement from the NE. Current conditions for 9/15-mostly cloudy skies (scattered Cirrus, the dominant cloud type being Altocumulus from which virga was observed
and scattered Altocumulus. However, the clouds currently over this area are associated to a much larger band of clouds in BC. Behind these "clouds" is a moderate pool of drier air approaching the coast of WA that should result in clearing skies as the day progresses), light haze, no precipitation in the last 24 (though there is precipitation over and West of the Cascades as well as in SE WA!),along with light wind velocities. They are from the West at 5-11 mph, wind gust: out of the West to 24 mph, humidity 45%, dew point 42°, current snow level 9500' [yesterday, it was at 13,000'], ot temperature 64.8°, and the barometric pressure 29.62" and falling. |
| 9/16/2011 |
5:22 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/15-scattered Cirrus, {a small area of Cirrus Undulatus toward the East}, Cirrostratus, Altostratus, and widely scattered lower level Cumulus to the NW, NE and South on a pleasant albeit cool late summer afternoon. Temperatures are in the mid to upper 70's along with light to moderate winds and gusts from the NW. Conditions for 9/16-scattered Cirrus (along with an immense halo!) and Cirrostratus, though in the West, the skies are mostly clear. There has been no precipitation in the last 24 (in fact, it has not rained in this area since 7/25 when 0.22" was received thus suggesting the possibility of a minor drought), light haze, and minimal to light wind velocities. They are from the West at 0-2 mph, wind gust: out of the WNW to 11 mph, humidity 54% (yesterday, the reading was 45%), dew point 40°, current snow level 7500' [yesterday, it was 9500'. Believe it or not, SNOW is in the forecast for the week-end on the higher peaks where a dusting to an excess of an inch is expected!], ot temperature 56.3°, and the barometric pressure 29.76" and rising. |
| 9/17/2011 |
5:21 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/16-since earlier this morning, when we had scattered Cirrus and Cirrostratus, it would appear that the clouds have thickened into a thin Altostratus overcast as an immense partial halo was observed. Temperatures are in the low to mid 70's, BP 29.69"R along with minimal air movement from the South and SW. Current conditions for 9/17-overcast skies (Altostratus), light haze, no precipitation in the last 24 (though this could change late tonight or tomorrow), and very little to no air movement. It is from the West at 2 mph, wind gust: out of the WSW to 12 mph, humidity 51%, dew point 38°, current snow level 6000' [yesterday, it was 7500'], ot temperature 57°, and the barometric pressure 29.81" and rising. |
| 9/18/2011 |
5:44 AM |
T |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/17-an improvement from the Altostratus overcast earlier this morning with partial clearing in the West and from the North to the NE. Although the Altostratus cloud type now dominates the East, and the South to the SE looks moderately threatening, Altocumulus control the West, while scattered lower level Cumulus were noticed in the SW and South. Temperatures are in the upper 60's to low 70's (or about another five degrees cooler than yesterday at this time), BP 29.84"R along with minimal air movement from the SW. Current conditions for 9/18-scattered Cirrostratus and lower level Cumulus on a mostly cloudy morning, light haze, the streak of 54 days with no rain was finally broken, and very little air movement at the present time. It is however from the WNW at 2-3 mph, wind gust: out of the WNW to 11 mph, humidity 63% {yesterday, the reading was 51%}, dew point 45°, current snow level 9000'[yesterday, it was at 6000'], ot temperature 57.7°, and the barometric pressure 29.91" and rising. |
| 9/19/2011 |
5:03 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Was there a possibility of a weak cold front moving through the area during the overnight? The NOAA national map shows an occluded front in Western Alberta; however, the segment of interest is the cold front. Here, it is shown moving SE over SE Alberta, the NW quadrant of MT, the Northern panhandle of ID and SE WA. The West Conus water vapor loop image reveals a swath of drier air commencing at similar points mentioned above, but since then, has moved further East by SE. This latter view tends to support or suggest the possibility that a weak cold front moved through the area sometime during the overnight. Meanwhile, a relatively large upper level low moving East by NE with very tight pressure gradients (which indicate the presence of strong winds)and circulating in a SW to NE pattern from SE of the middle Aleutians to the inner to middle Aleutians with its center in the same circulation pattern just mentioned. Of interest, is a "wave" moving in two different directions simultaneously. The "northern" half is moving East by NE around the trough and up the steep NW side of a developing ridge of high pressure just off the BC coast then fans out into Southern AK, most of the Yukon, SE AK and NW BC. This is congruous to both the upper level wind and NPJ charts (SW to NE). The "southern" half is moving SE as the NPJ is flowing by the SW side of the trough in a SE direction (this also is congruous to both the upper level wind and NPJ charts-NW to SE). Current conditions for 9/19-other than scattered Cirrus in the East and West and Altostratus in the South, we have mostly clear skies, light haze, and light wind velocities. They are from the North at 4-6 mph, wind gust: out of the NNW to 16 mph, humidity 56%, dew point 45°, current snow level 8000' [ yesterday, it was 9000'], ot temperature 61.9°, and the barometric pressure 29.859" and falling. |
| 9/20/2011 |
5:42 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Since yesterday, high pressure has continued to build over the PNW (BC, WA, OR) and Alberta with its relatively flat apex extending over the SE quadrant of the Yukon and all of the NW Territories even though the ridge axis is just off the WA/OR coasts. Immediately West of the ridge of high pressure is a trough with very tight pressure gradients (the indication of strong winds) and a SE sag. In addition to moving quite a distance in an East by NE direction from yesterday's location, there is an upper level low within this trough, circulating in a general SE to NW pattern from SE of Kodiak Island to SW AK with the center located SE of Kodiak Island. At this point, a lengthy occluded front commences and in a nice "arc" proceeds to flow behind Kodiak Island, across the SE half of Kanai Peninsula, the
Gulf, then gradually turning SE before turning South along the coastlines of SE AK and the Northern half of the Queen Charlottes. Mid afternoon weather for 9/19-scattered Cirrus in the East and from the SW to the SE along with lower level Cumulus on an otherwise beautiful late summer afternoon. Temperatures are in the upper 70's to low 80's, BP 29.93"R along with just enough air movement to discern the air direction was from the SE and the South. Current conditions for 9/20-scattered Cirrus in the NE, East and South on an otherwise sunny morning. The haze is light, no precipitation in the last 24, and minimal to calm winds. These paltry velocities are from the North at 2-4 mph, wind gust: out of the NNW to 13 mph, humidity 69% (yesterday, the reading was 56%), current freezing level 13,000' [yesterday, it was at 8000'], ot temperature 52.7°, and the barometric pressure 30.04" and rising. |
| 9/21/2011 |
5:35 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The ridge of high pressure that yesterday was building over the PNW and Alberta with its relatively flat apex extending over the SE quadrant of the Yukon and all of the NW Territories has moved East in a NE tilt with the ridge axis now in NW MT, the Northern panhandle of ID and SE OR (compared to being just off the WA/OR coasts yesterday); however, it still remains close enough to be influential. Why is this high pressure ridge in a NE tilt? There are two potential reasons. Both the upper level wind and NPJ charts show a relatively deep trough on the SE flank of the high pressure ridge with a SW sag into the Dakotas, NE, NE CO, and Eastern WY (1st possibility). Just SW of SE AK, is a moderate sized trough {that is virtually lying on its side with a slight SE sag pushing on the SW side of the ridge (2nd possibility) and moving North toward extreme NW BC} that has the appearance of an impressive low pressure system. The clouds are rotating counterclockwise near the center, and this rotation is having a profound influence not only with pulling in what appears to be cold air toward the center, but also on the airflow NW of the middle to outer Aleutians! The GOES West water vapor image (specifically "water vapor color") shows it to be a combination of both cool and warm air. Mid afternoon weather for 9/20-scattered Cirrus on an otherwise gorgeous summer afternoon. Temperatures are in the upper 70's to low 80's, BP 29.95"R along with light air movement from the NE. Current conditions for 9/21-scattered Cirrus in the East, some Altostratus to the NE and Altocumulus moving in from the West. There has been no precipitation in the last 24, the haze is light, and little to no air movement. These meager velocities are from the North at 2-5 mph, wind gust: out of the NW to 13 mph, humidity 61%, dew point 41°, current freezing level 13,500', ot temperature 52.2°. and the barometric pressure 29.93" and falling. |
| 9/22/2011 |
5:25 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/21-WOW! From mostly clear skies to an Altocumulus overcast (except for some partial clearing from the SW to the East) which has moved slowly from West to East earlier this morning. These clouds are associated with a band of clouds moving East by NE (presently over this area) which in turn, is associated to a much larger band of clouds that are associated to an upper level low (just West of SE AK and moving North towards extreme NW BC)
which are also moving in an East by NE direction. Temperatures are in the mid to upper 70's {about five degrees cooler that yesterday at this time because of the cloud cover}, BP 29.84"F along with just enough air movement to discern it was from the NW. Current conditions for 9/22-mostly overcast skies (from Cirrus to Altostratus), light haze, no precipitation in the last 24, and little to no air movement. The slight air movement that we do have is from the North at 2 mph, wind gust: out of the NNW to 10 mph, humidity 63%, dew point 46°, current freezing level 12,000' [yesterday, it was 13,500'], ot temperature 56.1°, and the barometric pressure 29.80" and falling. |
| 9/23/2011 |
5:37 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Mid afternoon weather for 9/22-on a mostly cloudy afternoon, the clearest area is from the West to the North where Cirrus, Cirrostratus, Altocumulus and several Altocumulus Lenticularis [ in the NW, and East of Birch Mountain where four appeared to be stacked one on top of the other]. Further East, is what appears to be a Cirrostratus overcast [because one could see through this cloud type] and scattered mid level Altocumulus. Further, and in the East, the cloud cover becomes more solid, quite possibly in the form of Altocumulus with scattered Cumulus to the South. Temperatures are in the upper 60's to low 70's along with a light breeze from the East. Current conditions for 9/23-scattered Cirrus on an otherwise mostly sunny morning, light to moderate haze, no precipitation in the last 24, and little to no air movement. What we do have, is from the East at 0-1 mph, wind gust is out of the East to 9 mph, humidity 74 [the last time the humidity was this high was on 8/23/11 when the reading was 70], dew point 53°, ot temperature 59.9°, and the barometric pressure 29.80 inches and falling. |
| 9/24/2011 |
5:13 AM |
0.00 |
0.0 |
M |
0.0 |
M |
The trough will be the main player in today's report. Since earlier in the day, this trough (with a Southern sag and tight pressure gradients) has moved steadily East and is now adjacent to WA, OR, and Northern CA as it attempts to move on shore but will be prevented from doing so in part by the steep SW flow across Vancouver Island into SW BC and the ridge of high pressure currently over Alberta, Saskatchewan and Manitoba even though the ridge axis is well East our our region (WA) in Eastern MT and the NE corners of WY and CO. Having said that, the UW IR Loop and the WSDOT IR images both show the outer bands of this wave moving NE over Western Clallam county, the NW quadrant of Jefferson county while just clipping the NW corner of Gray Harbor county. In addition, as a "cloud" independent of the wave moves East by NE during the overnight on the SE side of the trough, it succeeds in accomplishing two deeds. The air on the West side of the independent "cloud" is drawn around it in a SE direction then turns to the NE (1st deed). As a result, this action forces the tail section of the wave to the East and thereby becomes adjacent to the OR and Northern CA coasts (2nd deed). Mid afternoon weather for 9/23-just a few widely scattered Cumulus to the SW and North on an otherwise gorgeous first day of autumn. Temperatures are in the mid to upper 80's, BP 29.76"F along with just enough air movement to discern the direction was from the SE. Current condition for 9/24-scattered Cumulus of various sizes and shapes, light haze, no precipitation in the last 24, and very light to no air movement. This air movement is from the North at 0-1 mph, wind gust: out of the NNW to 13 mph, humidity 63%, dew point 48°, current freezing level 13,000', ot temperature 58.5°. and the barometric pressure 29.73" and falling.
|
| 9/25/2011 |
5:05 AM |
T |
0.0 |
M |
0.0 |
M |
Was I ever wrong in asserting that yesterday's upper level trough would be "prevented from attempting to move onshore"! The East side of this trough (with a SE sag and tight pressure gradients) has begun to move onshore in Western WA and NW OR. In addition, the "clouds" moving North from NE CA and NW NV through central OR and WA have a "straight edge" appearance. Although there is a steep SW flow over SW BC, WA, and OR, it does not account for the vertical direction of the "cloud" movement mentioned above. The NOAA national map shows a low pressure just West of Vancouver Island (or on the NE side of the trough) while the surface analysis reveals a low pressure just on the West coast of BC and adjacent to the Southern tip of the Queen Charlottes. From this point, a lengthy cold front is moving in a general East by SE direction over SW BC, the NW half of Vancouver Island and is adjacent to WA, OR, and NW CA before trailing SW over the Pacific Ocean. As far as this area (WA) is concerned, there is a surface trough with a gradual hyperbolic arc commencing in the Kamloops, BC area then extends in a SW direction West of Oroville and down the middle third of WA West of the Tri-Cities and through central OR, terminating just beyond the southern OR border into Northern CA (this would be SW of the Klamath Falls, OR region). Mid afternoon weather for 9/24-scattered Altocumulus on a warm and mostly sunny late September afternoon. Temperatures are in the upper 80's to low 90's, BP 29.46"F {or a 0.27" drop in pressure since earlier this morning} along with little to no air movement. Current conditions for 9/25-overcast skies, light haze, and the winds have picked up since earlier this morning. They are from the North at 2-4 mph, wind gust: out of the NNW to 13 mph, humidity 30%, dew point 39°, current snow level 8500' [yesterday, it was at 13,000], ot temperature 66.6°, and the barometric pressure 29.41" and falling. |
| 9/26/2011 |
5:07 AM |
0.02 |
0.0 |
M |
0.0 |
M |
*The amount of precipitation shown in the box above was recorded AFTER the observation time between the the hours shown below. Both the upper level wind and NPJ charts are in agreement as to the SW flow over SW BC and WA though differ slightly whether there is minor ridging taking place. The upper level wind chart actually shows minor ridging (with a NW tilt) over Northern BC, while the NPJ chart only hints of minor ridging. Yet another upper level trough with a SE sag and very tight pressure gradients. Within this trough is an impressive upper level low circulating in a nearly circular pattern over the Pacific just SW of the Queen Charlottes with the center located on the SW side of the upper level low. At this point, the NOAA surface analysis map reveals an occluded front with the occluded segment moving North (toward the Gulf) by NE toward the Queen Charlottes and the NW tip of Vancouver Island. From the triple point, a warm front moves NE toward Vancouver and WA while the cold front moves East by SE and is adjacent to Vancouver Island though still West of WA and OR before trailing SW over the Pacific Ocean. This cold front is clearly visible on the GOES West Longwave and UW NW IR Satellite Loop images. Mid afternoon weather for 9/25-scattered Cirrus, Cirrostratus, Altocumulus and lower level Cumulus on an otherwise partly sunny and pleasant afternoon. Temperatures are in the mid to upper 70's, BP 29.64"R (or 0.23" higher than earlier this morning) along with a refreshing light breeze from the SW. Current conditions for 9/26-a Nimbostratus overcast in the form of a light rain, along with minimal air movement. The meager air movement is from the SSE at 0-1 mph, wind puff: out of the SE to 9 mph, humidity 66%, dew point 41°, current snow level 8000', ot temperature 53.1°, and the barometric pressure 29.83" and rising. |
| 9/28/2011 |
5:01 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Yesterday, the NAM model showed an egg-shaped upper level low (located SW and SE of Kodiak Island and the inner Aleutians respectively) circulating in a general North-South pattern with two depressions on the NE side and two more on the SW side. Since then, it has moved East by NE across the Gulf into SE AK, the Yukon's SW quadrant and SE AK into NW BC weakening in the process as it now has just two depressions one each on the SW and NE sides of a relatively small trough adjacent to SE
AK. Further to the SW is a very deep trough (a trough within a trough scenario) with the southernmost sag well off the Southern CA coast. Here's where it gets interesting. While the upper level winds are flowing over the inner Aleutians from the NW to the SE, the outer band of clouds associated to the "depressions" mentioned above are moving NE. Meanwhile, the leading edge of a wave is moving NE across the Queen Charlottes and NW Vancouver Island into central BC (which is congruous to the NPJ chart-SW to NE) while simultaneously shifting North due to high pressure centered just off SW Vancouver Island and WA coasts. The ECMWF, GFS, and NAM models are in agreement that the current ridge of high pressure will remain over the PNW until sometime Friday when it will begin to break down and move East of the region (WA). Current conditions for 9/28-clear skies (except for some scattered Cirrus to the South), light haze, no precipitation in the last 24, and little to no air movement. What paltry air movement there was, was from the West at 3 mph, wind gust: out of the WNW to 13 mph, humidity 59%, dew point 37° {yesterday, the readings were 80% and 51° respectively}, current snow level 8500', ot temperature 53.2°, and the barometric pressure 30.14" and rising.
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| 9/29/2011 |
5:00 AM |
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Mid afternoon weather for 9/28-a change from clear skies earlier in the day to scattered high level clouds (Cirrus and Cirrostratus) as they commenced to move in over the area from the West and NW. They did not however, hamper a spectacular view of Glacier Peak to the NW! Temperatures are in the low to mid 70's, BP 30.11"R along with a light breeze from different directions including the NE, SE and South. Current conditions for 9/29-clear skies, light to moderate haze, dew was noticed on both the front and back yards this morning, no precipitation in the last 24, and little to no air movement. What little velocity there was was came from the WNW at 3-5 mph, wind puff: out of the NW to 9 mph, humidity 57%, dew point 32°, current freezing level 13,000' [the forecast calls for it to remain at this level for one more day before beginning a "gradual" decline until the middle of next week when it will bottom out at about 6500'], ot temperature 46° {more than likely due to radiational cooling with clear skies and little to no wind} and the barometric pressure 30.05" and falling. |
| 9/30/2011 |
5:13 AM |
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Mid afternoon weather for 9/29-clear skies (except for some scattered Cirrus near the Western horizon and Cirrostratus to the NW on an otherwise very pleasant autumn afternoon. Temperatures are in the upper 60's to low 70's, BP 29.88"F along with light air movement from the NE and SW. Current conditions for 9/30-scattered high level clouds (Cirrus), moderate to bad smoke/haze {quite possibly due to slash burning}, no precipitation in the last 24, and little to no air movement. What movement there is, is from the WNW at 2-4 mph, wind gust: out of the NW to 11 mph, humidity 67% (yesterday, the reading wa 57%), dew point 39°, current freezing level 11,500' [today should be the last day at the current level as the forecast calls for a gradual decline through mid-week when it will then be around 4500'], ot temperature 49.1°, and the barometric pressure 29.79" and falling. Here are some interesting stats for September- 1) total rain: 0.03", or 0.75% of average. Said another way, the average rainfall for BOTH August and September is 0.81" and this station received only 0.03". So, even though rain was recorded, it did not alleviate the minor drought we are presently experiencing which currently stands at 67 days (7/26/11-9/30/11). 2) number of days with no precipitation: 26, 3) high BP: 30.14" on 9/28, 4) low BP: 29.41" on 9/15 5) date with low BP and no precipitation: 29.62" on 9/15, 6)date with high BP and precipitation: 29.91" on 9/18 (T), 7) average BP: 29.86", 7a) number of days the BP was below 30.00": 90 (from 6/04/11 to 9/02/11), 8) average morning temperature: 58°, 9) high morning temperature: 66.6°, and 10) low morning temperature: 46°. |