Observation Date |
Observation Time |
Precipitation |
Snowfall |
Snowfall SWE |
Snow Depth |
Snow SWE |
Notes |
10/1/2012 |
9:00 AM |
0.04 |
M |
M |
M |
M |
Evening showers behind gust front. Pretty though short cumulus towers with nice bases, appearing like a good storm day except tops were cut off at a rather low height |
10/2/2012 |
7:20 AM |
0.03 |
M |
M |
M |
M |
Overnight light rain, nothing falling at obs time including no mist or drizzle |
10/3/2012 |
9:00 AM |
0.65 |
M |
M |
M |
M |
Rain yesterday morning after obs time |
10/4/2012 |
9:00 AM |
0.02 |
M |
M |
M |
M |
Light rain this morning |
10/5/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/6/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/7/2012 |
10:15 AM |
0.07 |
M |
M |
M |
M |
Light rain at obs time |
10/8/2012 |
10:30 AM |
0.16 |
M |
M |
M |
M |
No rain at obs time. .23" for 2-day total to compare against sites with earlier obs time for yesterday's all-day light rain |
10/9/2012 |
8:00 AM |
0.15 |
M |
M |
M |
M |
Sun, clear sky at obs time but all surfaces still wet |
10/10/2012 |
9:00 AM |
0.02 |
M |
M |
M |
M |
Considerable spritzing of light soaking rain at 7pm, apparently brief |
10/11/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/12/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/13/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/14/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/15/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/16/2012 |
8:45 AM |
0.11 |
M |
M |
M |
M |
First rain yesterday was on the way to work in the morning, ended by evening. |
10/17/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/18/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/19/2012 |
9:00 AM |
0.23 |
M |
M |
M |
M |
Stayed up late to watch thunderstorm to the west, saw a few distant flashes and heard one rumble of thunder before it dissipated. Didn't even notice rain though may have had a little. Another batch of showers came through in the morning, ending before obs time. |
10/20/2012 |
12:00 PM |
0.54 |
M |
M |
M |
M |
Heavy showers in the evening, no thunder observed by someone at home |
10/21/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/22/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/27/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
10/28/2012 |
9:00 AM |
T |
M |
M |
M |
M |
|
10/29/2012 |
11:00 AM |
1.50 |
M |
M |
M |
M |
Sandy total so far exactly 1.5 inches a few minutes ago at 11am. Will not be able to update during extremely windy conditions due to danger from falling tree limbs. A little light rain began mid-afternoon and continued light-moderate overnight but much heavier for brief periods this morning. |
10/30/2012 |
11:20 AM |
3.81 |
M |
M |
M |
M |
Sandy total 5.31" so far, still a little light rain falling. Likely undercatch due to strong wind. Today's total includes 2.36" which fell after yesterday afternoon's 2 significant weather reports. Some branches down but nothing really big here. At peak of storm there were puddles and water everywhere but all has run off and receded now. |
10/31/2012 |
8:30 AM |
0.15 |
M |
M |
M |
M |
more light rain, ended before obs time |
11/1/2012 |
9:00 AM |
0.02 |
M |
M |
M |
M |
Still more light rain, bringing extended storm total to 5.48". No rain falling at obs time here but drove through more light rain on the way to work. |
11/2/2012 |
9:00 AM |
0.01 |
M |
M |
M |
M |
Light rain yesterday morning after obs time |
11/3/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/4/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/5/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/6/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/7/2012 |
9:00 AM |
T |
M |
M |
M |
M |
|
11/8/2012 |
9:00 AM |
0.09 |
M |
M |
M |
M |
Did not see any snowflakes but can't be sure there were none. |
11/9/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/10/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/11/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/12/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/13/2012 |
8:45 AM |
0.43 |
M |
M |
M |
M |
Raining at obs time. Brief heavy shower at bed time followed by continuing light rain.Yesterday might have been last 70-deg day before March |
11/14/2012 |
8:00 AM |
0.05 |
M |
M |
M |
M |
Rain from yesterday morning after obs time before ending |
11/15/2012 |
8:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/16/2012 |
9:00 AM |
0.01 |
M |
M |
M |
M |
|
11/17/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/18/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/19/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/20/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/21/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/22/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/23/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/24/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/25/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/26/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/27/2012 |
9:25 AM |
0.04 |
M |
M |
M |
M |
Light rain at obs time |
11/28/2012 |
9:00 AM |
0.08 |
M |
M |
M |
M |
|
11/29/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
11/30/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/1/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/2/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/3/2012 |
8:50 AM |
0.02 |
M |
M |
M |
M |
Ground and everything soaked with heavy dew this morning... but radar showed widespread showers passed through yesterday evening. I'm not sure how much of the .02" is from each source, so just reporting the total in gauge. |
12/4/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/5/2012 |
8:00 AM |
0.01 |
M |
M |
M |
M |
Very light rain just before obs time |
12/6/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/7/2012 |
9:15 AM |
0.04 |
M |
M |
M |
M |
Appears morning rain has ended |
12/8/2012 |
12:00 PM |
0.01 |
M |
M |
M |
M |
Some light rain yesterday eve |
12/9/2012 |
3:40 PM |
M |
M |
M |
M |
M |
I found the gauge tipped over sideways and tilted slightly top down, so collected rain drained out. Animal activity must have done this. Based on surrounding stations, the amount lost must have been between 0.05" and 0.20". There were late evening and overnight showers, followed by long periods of very fine misty light drizzle through the day. |
12/10/2012 |
9:00 AM |
0.04 |
M |
M |
M |
M |
|
12/11/2012 |
8:00 AM |
0.10 |
M |
M |
M |
M |
Overnight/morning rain ended, sun coming out |
12/12/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/13/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/14/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
Heavy frost on everything, was cold calm clear night. |
12/15/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/16/2012 |
6:00 PM |
0.03 |
M |
M |
M |
M |
Light rain overnight, none during the day, light rain began again this evening shortly before I read the gauge. |
12/17/2012 |
8:40 AM |
0.11 |
M |
M |
M |
M |
Rain ended before obs time, everything socked in with fog. |
12/20/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/21/2012 |
8:30 AM |
0.74 |
M |
M |
M |
M |
Walks, street already dried up from wind following evening/overnight rain |
12/22/2012 |
4:00 PM |
0.01 |
T |
M |
0.0 |
0.00 |
There were snow showers around yesterday while I was at work. I guess it measured in the gauge, since I had in excess of 0.01" (still less than 0.02"). New snowfall is a guess based on water in the gauge and that any precip would have fallen as snow. |
12/23/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/24/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/25/2012 |
9:00 AM |
0.12 |
M |
M |
M |
M |
At work, snow, which eventually stuck to cars and mulch, though only slightly whitened grassy areas. At home, I don't know what fell or how much snow, if any - no sign of snow when I arrived home. |
12/26/2012 |
7:20 AM |
0.00 |
0.0 |
M |
M |
M |
Precip (snow) began almost immediately after this time. |
12/27/2012 |
7:45 AM |
1.07 |
M |
M |
0.0 |
0.00 |
Snow whitened ground in morning (with bare patches) before I left for work, did not measure, all melted during day after change over to rain. In morning yesterday, started as snow without whitening ground, changed over to rain (no icing), then changed back to moderate snow with rather large flakes, all within around an hour and a half. Now, ground is bare and muddy. |
12/28/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
12/29/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
Precip started later, amount in tomorrow's reading. Began sometime after 9am today, snowing by around 10am, now at 3:20pm sun is out and all has melted.
Never accumulated beyond a dusting, as most was melting on the ground, although ground briefly was whitened in grassy areas. |
12/30/2012 |
11:00 AM |
0.14 |
M |
M |
0.0 |
M |
As noted in yesterday's comments entered in the afternoon, snow began by 10am and ended by mid-afternoon, followed by sun. Most snow melted on contact with the ground, with some white patches at the peak which melted completely a short while later. With no frozen snow board, I have no way to know the actual snow fall. Ground is bare today. |
12/31/2012 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/1/2013 |
1:00 PM |
0.00 |
0.0 |
M |
M |
M |
All dry, no sign of any drops or flakes |
1/2/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
Dry, no trace apparent, don't know if anything from yesterday's virga made it through and evaporated. |
1/3/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/4/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/6/2013 |
12:00 PM |
0.03 |
M |
M |
M |
M |
Light precipitation overnight |
1/7/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/8/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/9/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/10/2013 |
9:00 AM |
0.01 |
M |
M |
M |
M |
Rain Wednesdsay afternoon |
1/11/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/12/2013 |
12:00 PM |
0.06 |
M |
M |
M |
M |
light rain, mist, and fog during the afternoon into overnight, clouds this morning now breaking up |
1/15/2013 |
9:00 AM |
0.39 |
M |
M |
M |
M |
Light rain overnight through the morning and expected to continue until mid-day tomorrow, so several-day totals will be needed tomorrow or the next day to compare against sites with earlier observation times. |
1/16/2013 |
7:45 AM |
0.69 |
M |
M |
M |
M |
Rain continuing at obs time |
1/17/2013 |
9:00 AM |
0.12 |
M |
M |
M |
M |
Rain ended, storm total is 1.20 |
1/18/2013 |
8:00 AM |
0.01 |
M |
M |
0.0 |
M |
water in the gauge this morning was not frozen. I did not see any snowflakes yesterday although there was virga and radar echoes aloft |
1/19/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/20/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/21/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/22/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/23/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/24/2013 |
8:30 AM |
0.03 |
0.5 |
0.03 |
0.5 |
0.03 |
snow ended shortly before obs time, sun out.
Snow is very light and powdery. Gauge and core (3 samples) melted amounts agree at slightly under 0.03" (closer to 0.03 than to 0.02). |
1/25/2013 |
9:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snowcover is down to around 75% and sublimation has reduced the depth to less than half inch in all areas, just a dusting in many areas, and none over some areas. |
1/26/2013 |
2:00 PM |
0.09 |
1.0 |
0.09 |
0.5 |
M |
Snow now largely melted in many places. Had only 0.05" in gauge but believe this is an undercatch and instead substituted the melted core average from 3 samples in areas that had little melting. Snow began yesterday around 2:30pm and continued until after dark, ending in the evening. |
1/27/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
1/28/2013 |
2:00 PM |
0.15 |
T |
M |
T |
M |
Freezing rain overnight/morning coated cars and sidewalks with ice and created ice patches instead of puddles in the yard, but not all surfaces were coated. Now ice has melted almost completely with a few small patches of snow remaining from a few days ago. |
1/29/2013 |
8:00 AM |
0.00 |
0.0 |
M |
M |
M |
Yesterday's late obs included all of the precip, none fell later. Ground is soaked from heavy dew, roads and cars are covered with water but it's not from rain, as high dewpoints surged across the area over cold ground |
1/30/2013 |
8:00 AM |
0.00 |
0.0 |
M |
M |
M |
Again, no precipitation but ground is soaked and cars are coated with condensate |
1/31/2013 |
8:00 AM |
1.38 |
M |
M |
M |
M |
Several cells with brief moderate-heavy rain from 8pm to 8:30pm, followed by longer period of light to moderate rain. No impressive winds or gust front despite such strong winds aloft and extraordinarily warm surface temperatures right up to the onset of the event. Saw a couple diffuse flashes to the southeast as the heaviest cell was coming overhead, may have been a little lightning - did not hear thunder. |
2/1/2013 |
8:00 AM |
0.03 |
0.5 |
0.03 |
0.5 |
0.03 |
Light snow completely ended before obs time. Precip is average of 3 core samples. Gauge had very slightly less. Top of snow was an inch above solid ground in places but snow was sitting on top of leaves and grass, not reaching the lower half of that inch. Snow on hail pad was slightly under a half inch and snow on cars was less. Snow already melted on road and even sun-exposed unsalted sidewalk, now just wet. |
2/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
might have missed a flurry in the eve/overnight as radar was showing precip aloft, but did not see any when looked. This morning encountered a few raindrops on commute to work but that was not observed at my home CoCoRaHS site as of when I left. |
2/6/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/7/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/8/2013 |
9:30 AM |
0.19 |
M |
M |
M |
M |
Light rain still falling at obs time. Look at 2-day totals tomorrow to compare against sites with earlier obs times since some of this morning's rain in my total today will be in their amount for tomorrow. |
2/9/2013 |
1:00 PM |
0.02 |
M |
M |
M |
M |
Light rain continued after obs time yesterday, ending during day. Storm total 0.21" |
2/10/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/11/2013 |
8:30 AM |
0.36 |
M |
M |
M |
M |
Rain ended before obs time |
2/12/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/13/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/14/2013 |
8:00 AM |
0.24 |
M |
M |
0.0 |
0.00 |
6pm snow was flying in Gaithersburg, later got home to all rain. 9pm snow was mixed with rain at my site but nothing stuck - no snow on cars, grass, or anything. Ground is bare. Car windows are glazed and body has ice crystallized into elaborate patterns. Inner cylinder of gauge contained only liquid, no ice, but outside of funnel was glazed and adhered to outer cylinder, difficult to pull apart. Snow on ground this morning on the way to work, began a bit north/west of Beltsville and continued all the way to Gaithersburg. |
2/15/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/16/2013 |
12:00 PM |
0.16 |
M |
M |
M |
M |
Evening rain |
2/17/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/18/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
2/19/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
precip has not yet arrived, almost here |
2/20/2013 |
9:30 AM |
0.12 |
M |
M |
M |
M |
Was mostly or all rain - didn't notice if any snowflakes at the start |
3/2/2013 |
9:00 AM |
0.01 |
M |
M |
M |
M |
Was surprised to find measurable precip, was liquid in the gauge |
3/3/2013 |
7:00 AM |
T |
M |
M |
M |
M |
few stray snowflakes in the air |
3/11/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/15/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/16/2013 |
10:30 AM |
0.01 |
M |
M |
M |
M |
Everything is dry but the smell of rain is in the air |
3/17/2013 |
12:00 PM |
T |
M |
M |
M |
M |
|
3/18/2013 |
9:00 AM |
0.01 |
T |
M |
0.0 |
M |
Small amount of snow falling in last hour or so, melting on ground but stuck on funnel. Appears it was dry overnight, seems the air was so dry the snow falling aloft overnight/early morning all evaporated on the way down until the last hour or so. |
3/19/2013 |
9:00 AM |
0.32 |
M |
M |
M |
M |
rain ended before obs time |
3/20/2013 |
9:00 AM |
T |
M |
M |
M |
M |
something in the gauge |
3/21/2013 |
9:00 AM |
T |
M |
M |
M |
M |
again something in the gauge |
3/22/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/23/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/24/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/25/2013 |
9:00 AM |
0.36 |
3.0 |
M |
3.0 |
M |
Evening light sleet, could hear it but no snowflakes, everything just wet. Overnight snow began and moderate snow still falling at obs time. New snow may be underestimate due to likelihood of early melting and even later melting too as temps were just above freezing and ground was not frozen. Lots of slush piles, especially on paved surfaces, and snow was heavy/wet. 3.0" only in deepest parts but only very light wind at most, so not due to drifting, only due to differences in melting rate, so deepest is probably truest measure in this case. |
3/26/2013 |
1:00 AM |
0.19 |
M |
M |
T |
M |
Snow has melted with much of the yard now bare. Precip is from continuation of moderate snow in morning to whatever it turned into through the day, was still spitting a little rain even into early evening before clearing out and drying out later in the evening. |
3/27/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/28/2013 |
9:00 AM |
0.02 |
M |
M |
M |
M |
At office, saw afternoon snow showers and precip shafts falling out of shallow convective cells (temperatures in the 40s but cold aloft, fell as snow). Wasn't home to see the precip but guess it was the same but can't be certain of the precip type at home. |
3/29/2013 |
9:00 AM |
T |
M |
M |
M |
M |
|
3/30/2013 |
11:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
3/31/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/1/2013 |
8:45 AM |
0.03 |
M |
M |
M |
M |
Light rain during the day, heavy dew overnight, sunny now |
4/2/2013 |
9:00 AM |
0.01 |
M |
M |
M |
M |
Scattered light showers with cold front during mid-day, guess a little fell over the house, didn't notice any at the office |
4/3/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/4/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/5/2013 |
9:00 AM |
0.29 |
M |
M |
M |
M |
Rain overnight ended before obs time |
4/6/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/7/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/8/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/9/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/10/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/11/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/12/2013 |
9:30 AM |
0.52 |
M |
M |
M |
M |
Light rain continuing at obs time. Heavy rain briefly around 7am and again, with gusty winds, shortly before 8am. Other sites reporting earlier in the morning before these events arrived will show them in tomorrow's readings, so proper comparison requires viewing 2-day totals tomorrow. I did not observe thunder or lightning although several of the surface stations in the region did. |
4/13/2013 |
12:00 PM |
0.01 |
M |
M |
M |
M |
Yesterday's obs taken after the heavy showers, so they are included in yestersday's total. Afternoon/evening showers apparently missed my site or just gave a few drops. |
4/14/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/15/2013 |
8:25 AM |
0.03 |
M |
M |
M |
M |
Very fine light rain still at obs time |
4/16/2013 |
9:00 AM |
T |
M |
M |
M |
M |
continuation from previous morning, but only a trace more |
4/17/2013 |
9:00 AM |
0.02 |
M |
M |
M |
M |
overnight rain, morning dew |
4/18/2013 |
9:00 AM |
0.16 |
M |
M |
M |
M |
Rain came during morning, so people with earlier obs times may have less. Drove through heavy rain on way to work, so expect may have more rain in gauge for tomorrow's reading |
4/19/2013 |
9:00 AM |
0.05 |
M |
M |
M |
M |
not sure how much from overnight/early morning rain (newspaper bag wet, not from dew) and from rain yesterday morning after obs time |
4/20/2013 |
12:00 PM |
0.86 |
M |
M |
M |
M |
heavy thunderstorm came around 7pm with strong gusty winds during the storm, not ahead like a gust front, and continuing moderate rain for a few hours afterwards. Storm was preceded by a strong low-level jet with low clouds zooming from the south. |
4/21/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/22/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/23/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/24/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/25/2013 |
9:30 AM |
0.01 |
M |
M |
M |
M |
A little more than 0.01 in gauge. I didn't notice as the frontal rainband passed through but I sure noticed the roaring winds behind the front a bit before midnight. |
4/26/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/27/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/28/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
4/29/2013 |
9:15 AM |
0.21 |
M |
M |
M |
M |
Light rain at obs time. Some of the rain in my report today will appear in tomorrow's report at other sites which have an earlier reporting time. |
4/30/2013 |
9:00 AM |
0.08 |
M |
M |
M |
M |
|
5/1/2013 |
9:00 AM |
0.02 |
M |
M |
M |
M |
|
5/2/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/3/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/4/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/6/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/7/2013 |
9:00 AM |
0.05 |
M |
M |
M |
M |
Light rain at obs time |
5/8/2013 |
8:00 AM |
0.69 |
M |
M |
M |
M |
One clap of thunder late evening, 10 or 11pm
Drove through bursts of heavy rain, small heavy showers both in morning and in evening. |
5/9/2013 |
9:00 AM |
0.68 |
M |
M |
M |
M |
Hail around the area but my hailpad shows nothing here.
Thunderstorms west and east but was not home when may have had thunder here and wasn't in the right place to see any lightning where I was. |
5/10/2013 |
9:00 AM |
0.05 |
M |
M |
M |
M |
afternoon/eve showers while not home and late evening very light rain |
5/11/2013 |
9:00 AM |
0.35 |
M |
M |
M |
M |
Thundershowers after dark late evening, continuing with rain until after midnight. Although there were no torrential downpours, the large drops and somewhat heavy rain followed by a period of moderate rain seemed like more than what shows in the gauge, but it was not windy (no big concern about undercatch), so I guess this is one of those times when perception is not as good |
5/12/2013 |
9:00 AM |
0.40 |
M |
M |
M |
M |
Afternoon and evening showers and thundershowers although not a lot of lightning |
5/13/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/14/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/15/2013 |
7:45 AM |
0.01 |
M |
M |
M |
M |
High-based showers from laminar-looking updraft bases, dry low levels so not much reached ground
Showers heavier on evening drive home than apparently at home. Also encountered light showers this morning on commute, so if also fell at home will be in tomorrow's report. |
5/16/2013 |
9:00 AM |
T |
M |
M |
M |
M |
don't think I got any overnight showers as all seemed to stay north, so probably got a little yesterday morning after obs time |
5/17/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/18/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/19/2013 |
12:00 PM |
0.03 |
M |
M |
M |
M |
It seems I had 0 or T since early morning, so the 0.03 should be comparable to others with earlier reporting times. |
5/20/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/21/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/22/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/23/2013 |
9:10 AM |
0.02 |
M |
M |
M |
M |
Light rain began at obs time. Rain in gauge is from shower late evening maybe ~ 11pm.
Watched thunderstorms 7-8pm just west of Gaithersburg, a few flashes with extensive branching structure, lots of fingers. A line of updraft bases sat over the gust front well ahead of those thundershowers, gust front was pushed by previous storms which passed well to the west. At home, had a few rumbles of thunder after midnight from a storm to the south too far to see through all the trees in the yards. |
5/24/2013 |
9:15 AM |
1.34 |
M |
M |
M |
M |
Light rain at obs time. Colossal downpour for about 1 minute around 10:30pm, then heavy rain around 10:40pm until after 11, followed by continuing rain for a while. Some lightning flashing around during this time but not a lot of thunder and no distinct bolts, so either distant or in clouds. Earlier, around 6pm, moderate to heavy showers formed along a gust front overhead of my office in Gaithersburg, culminating in one nearby lightning strike. |
5/25/2013 |
9:00 AM |
0.02 |
M |
M |
M |
M |
|
5/26/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/27/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/28/2013 |
9:00 AM |
0.03 |
M |
M |
M |
M |
Sprinkles around 7pm, must have been some light rain overnight. Later, after obs time, also had more sprinkles around 10am, for tomorrow's report. |
5/29/2013 |
8:00 AM |
0.03 |
M |
M |
M |
M |
Thunderstorms passed around but not much rain here |
5/30/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
5/31/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/1/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/2/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/3/2013 |
9:00 AM |
0.72 |
M |
M |
M |
M |
No rain at obs time but encountered rain just afterwards in the first part of my commute. Thunderstorms began ~ 6pm with a major cell with a lot of lightning and dark updraft bases passing to my north, giving my location several very brief heavy showers, and new cells formed along the southwest flank, just skirting my location, also some dropping heavy rain for a few seconds. Another storm came from the west later but it was already weakening on approach and was not impressive. Then there was more rain overnight and in the morning but not heavy. |
6/4/2013 |
9:00 AM |
0.29 |
M |
M |
M |
M |
Based on radar and the briefly low visibility at the College Park airport around 3 km to the south, appears a heavy shower passed over during the afternoon. |
6/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/6/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/7/2013 |
7:55 AM |
1.60 |
M |
M |
M |
M |
Didn't notice heavy rain (perhaps overnight), but rain has been persistent. |
6/8/2013 |
9:00 AM |
0.74 |
M |
M |
M |
M |
storm total 2.34 |
6/9/2013 |
2:00 PM |
0.01 |
M |
M |
M |
M |
Apparently there were some more light showers Saturday (yesterday) after obs time |
6/10/2013 |
8:30 AM |
0.81 |
M |
M |
M |
M |
Heavy rain late overnight or early morning, did not notice any lightning or thunder |
6/11/2013 |
7:30 AM |
1.81 |
M |
M |
M |
M |
Had 0.84 as of the 7:45pm interlude between episodes and an additional 0.97 after that. Lots of puddles in the yard now and water is still running through all the drainage systems although the heavy rain ended before around 9pm. Had a little bit of lightning and thunder with the main line 8-9pm but not a lot. |
6/12/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/13/2013 |
8:30 AM |
0.00 |
0.0 |
M |
M |
M |
Lightning late night to distant southeast frequently lighting up CB tower (~30-45 miles distant), nothing here. Morning squall line came after obs time and strengthened rapidly just after passing through, with rain beginning around 9am. |
6/14/2013 |
7:30 AM |
0.56 |
M |
M |
M |
M |
3 episodes here: Morning rain began just after 9am but was between storms as those from west were dissipating and gust front ahead of them had new storms which matured just to my east. One flash of lightning and peel of thunder. Afternoon storms zipped through while I was at work, but looks like my CoCoRaHS site missed the strong winds as there were no leaves and branches down in the yard. Those combined for .54" and an additional light shower came through around 8pm, had .02 more in gauge in the morning for .56" total. From my office, I had a terrific view of the apex of the bow echo which passed just to my south through Rockville, where there was extensive tree damage. Winds at my location were from between SW and W, outflow, there was no inflow to it. Rain sheets whipping in the wind were all from the SW and W. The NWS issued tornado warnings based on rotation in the storm-relative winds, but that appeared actually to be the result of the sharp nose-shaped profile of the surge and I don't think there were any spin-ups in the vicinity of I-270, at least none on the north side of the apex which is the usual location for bookend vorticies. |
6/15/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/16/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/17/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/18/2013 |
9:20 AM |
T |
M |
M |
M |
M |
few drops of rain at obs time. Subsequently encountered rain on commute to work, so if that also fell at my site then it will be in tomorrow's catch |
6/19/2013 |
9:00 AM |
0.44 |
M |
M |
M |
M |
|
6/20/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/21/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/22/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/23/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
6/24/2013 |
8:00 AM |
0.35 |
M |
M |
M |
M |
rain yesterday mid-morning |
6/25/2013 |
9:00 AM |
0.04 |
M |
M |
M |
M |
Thunderstorms were mostly to the west - guess anvil debris rained out a little while I was at work |
6/26/2013 |
8:00 PM |
0.20 |
M |
M |
M |
M |
Gust front went through before 11pm followed by lightning to the north and a briefly moderate shower, probably only a few hundredths. Forgot to read gauge in the morning and when I got home from work this evening, afternoon storms had already passed through the area. I am guessing the majority of the 0.20" is from this afternoon's storm. |
6/27/2013 |
8:00 AM |
0.08 |
M |
M |
M |
M |
Yesterday's obs was in the evening just after a brief storm. Within an hour after that, another storm passed by to the south and my site caught the northern edge of it, leaving the .08 I found this morning. |
6/28/2013 |
9:00 AM |
0.10 |
M |
M |
M |
M |
Apparently caught some dissipating anvil showers during afternoon. This year has been remarkable for how little lightning there has been with even vigorous storms compared to other years |
6/29/2013 |
10:00 AM |
0.61 |
M |
M |
M |
M |
Afternoon/evening showers and thundershowers, missed the powerful cells which passed across the southern half of the metro area |
6/30/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/1/2013 |
9:00 AM |
0.17 |
M |
M |
M |
M |
mid-day, afternoon thundershowers passed around, got the edge of some at home while was away |
7/2/2013 |
8:30 AM |
0.32 |
M |
M |
M |
M |
0.31 in gauge when arrived home from work and someone from Greenbelt said they had a deluge at around 11am, so likely it was from that cell. Additional 0.01 in gauge this morning and grass and newspaper bag are wet, looks like recent drizzle or light rain. |
7/3/2013 |
9:05 AM |
0.59 |
M |
M |
M |
M |
Had 0.06" yesterday evening and an additional 0.53" at obs time this morning, mostly from a heavy shower peaking after 8:30am which had tapered to light rain but was still ongoing at obs time. Other sites with earlier obs times will have this event in tomorrow's report. |
7/4/2013 |
11:00 AM |
0.04 |
M |
M |
M |
M |
Probably all is from the morning rain which continued after obs time. Others with earlier obs times yesterday will have yesterday morning's rain in today's amount. |
7/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
No rain! 10 of previous 11 days had rain |
7/11/2013 |
8:15 AM |
0.03 |
M |
M |
M |
M |
Sprinkles at obs time. Gust front from south arrived shortly before 8pm followed by a small thunderstorm with a good amount of lightning shortly before 8:30pm. The storm core passed slightly to the west based on radar and the rain at my location was never heavy. The gust front was from a larger complex to the south and the storm formed on that larger gust front. |
7/12/2013 |
7:00 AM |
0.56 |
M |
M |
M |
M |
Rain at obs time. Thunderstorm with a lot of lightning to northwest 11pm, southwest to west at 12am to 1am, and got rather close without rain. 3:45am another thunderstorm with a lot of lightning to the south and rain here. |
7/13/2013 |
10:00 AM |
0.20 |
M |
M |
M |
M |
|
7/14/2013 |
4:00 PM |
0.43 |
M |
M |
M |
M |
Brief torrential downpour approx 8pm |
7/15/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/16/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/17/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/18/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/19/2013 |
7:30 AM |
T |
M |
M |
M |
M |
Beautiful tall towers with very short-lived thundershowers were in the area. One with a rain shaft to the north dissipated with a few large drops and few rumbles of thunder as it passed through here 7-8pm along with a weak gust front that hardly provided any relief from the heat, and a new small cell complex rose just to the south and was briefly looking impressively bubbly and robust, producing a heavy shaft and a few impressive lightning bolts with booming thunder around 5 miles to the south. |
7/20/2013 |
10:00 AM |
0.00 |
0.0 |
M |
M |
M |
Nothing here, afternoon storms at office in Gaithersburg |
7/21/2013 |
10:00 AM |
0.00 |
0.0 |
M |
M |
M |
Nothing here, evening after-dark spectacular lightning display across the northern sky but especially to northwest |
7/22/2013 |
7:15 AM |
T |
M |
M |
M |
M |
Had a few drops of anvil rain from something that dissipated far to the west while fresh storms formed just a few miles to the south and east, offering a nice view around 4-4:30pm of the updraft towers, updraft base, dense heavy rainshaft, and sparks of lightning flying out of the cloud to the rear (west) of the rainshaft, with booming thunder. |
7/23/2013 |
7:00 AM |
0.28 |
M |
M |
M |
M |
Lightning distant northwest after dark. Heavy shower approx midnight with no lightning/thunder. |
7/24/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/25/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/26/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/27/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/28/2013 |
11:00 AM |
0.20 |
M |
M |
M |
M |
Afternoon and perhaps a little overnight shower activity. Tall grass blades wet, shorter not wet. |
7/29/2013 |
9:00 AM |
0.01 |
M |
M |
M |
M |
There were showers and build-ups which may have dropped some rain in the vicinity during the afternoon, evening, and again around midnight but did not notice which of these dropped the tiny bit of rain in my gauge. |
7/30/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
7/31/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/1/2013 |
8:00 AM |
0.41 |
M |
M |
M |
M |
Overnight rain. No rain at obs time. Encountered rain later during commute. |
8/2/2013 |
9:00 AM |
0.11 |
M |
M |
M |
M |
|
8/3/2013 |
9:00 AM |
0.03 |
M |
M |
M |
M |
|
8/4/2013 |
10:00 AM |
0.10 |
M |
M |
M |
M |
Afternoon/eve showers |
8/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/6/2013 |
9:15 AM |
0.01 |
M |
M |
M |
M |
rain drops on cars but not raining at obs time, so must have been very recent |
8/7/2013 |
9:00 AM |
0.02 |
M |
M |
M |
M |
|
8/8/2013 |
8:00 AM |
0.01 |
M |
M |
M |
M |
Didn't notice rain at home. Saw some nice finely-forked lightning in Gaithersburg area around 9pm. |
8/9/2013 |
9:00 AM |
0.05 |
M |
M |
M |
M |
Afternoon or evening rain while I was out.
Water in gauge is unusually clear and cleaned the dirt/mud smear out of the cylinder.I wonder if this means it was more acidic than usual. Maybe we should supplement CoCoRaHS with water pH measurements! Imagine a map from 10,000 CoCoRaHS observers, revealing the downstream influence (which can extend for hundreds of miles) of large coal-fired power stations. |
8/10/2013 |
11:00 AM |
0.41 |
M |
M |
M |
M |
Afternoon storm, spectacular lightning show to distant south after dark |
8/11/2013 |
6:00 PM |
0.01 |
M |
M |
M |
M |
Guessing rain came Sat afternoon while out, as others reported it then and found water in gauge |
8/12/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/13/2013 |
9:00 AM |
0.23 |
M |
M |
M |
M |
Brief heavy shower 8am |
8/14/2013 |
8:00 AM |
0.52 |
M |
M |
M |
M |
Strong storm a little after 8pm. Was out around 2 miles north of my location and caught in torrential downpour with some winds and immediate minor street flooding. Most of the lightning was in cloud and was towards the rear of the storm. Before the storm arrived, I could see low-hanging updraft part of the storm to the southwest at the south end of that cell. |
8/15/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/16/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/17/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/20/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/21/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/22/2013 |
8:30 AM |
0.03 |
M |
M |
M |
M |
Lightning distant after dark, no storms here. Guess rain fell late night. |
8/23/2013 |
9:00 AM |
T |
M |
M |
M |
M |
|
8/24/2013 |
9:00 AM |
0.08 |
M |
M |
M |
M |
rain late morning or mid-day |
8/25/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/26/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
8/27/2013 |
9:00 AM |
T |
M |
M |
M |
M |
|
8/28/2013 |
7:45 AM |
T |
M |
M |
M |
M |
sprinkles at obs time, gauge empty |
8/29/2013 |
9:00 AM |
0.77 |
M |
M |
M |
M |
No rain falling at obs time. No lightning or thunder observed here. |
8/30/2013 |
9:00 AM |
0.02 |
M |
M |
M |
M |
|
8/31/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/1/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/2/2013 |
9:00 AM |
0.13 |
M |
M |
M |
M |
Light rain overnight ~ midnight or very late |
9/3/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/4/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/5/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/6/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/7/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/8/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/9/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/10/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/18/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/19/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/20/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/21/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/22/2013 |
9:00 AM |
1.13 |
M |
M |
M |
M |
Afternoon/evening heavy showers, no lightning or thunder |
9/23/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/24/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/25/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/26/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/27/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/28/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/29/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
9/30/2013 |
9:00 AM |
0.00 |
0.0 |
M |
M |
M |
|