| Observation Date |
Observation Time |
Precipitation |
Snowfall |
Snowfall SWE |
Snow Depth |
Snow SWE |
Notes |
| 10/1/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/2/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/3/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/4/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/5/2009 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
RW-- ~1700 MDT 04 Oct 2009. Trace precip. |
| 10/6/2009 |
7:00 AM |
0.34 |
0.0 |
M |
0.0 |
M |
RW- 1130-1210 MDT 05 Oct 2009. Precip .34" |
| 10/7/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/8/2009 |
7:00 AM |
0.02 |
0.0 |
M |
0.0 |
M |
Drizzle began 0445 MDT 08 Oct 2009, continues thru obs time. Precip .02". |
| 10/9/2009 |
7:00 AM |
0.14 |
T |
M |
0.0 |
M |
Drizzle changed to SG- by mid morning 08 Oct 2009, then to S-/S-- by afternoon, ending by 2000 MDT. Precip .14. Wet snow did not stick to warm ground. Max accumulation barely a trace. |
| 10/10/2009 |
7:00 AM |
0.20 |
2.5 |
M |
2.5 |
M |
S-, occasionally S, began 1945 MDT 09 Oct 2009, first accumulating snow of the season. 0.5" accumulation by 2100 MDT, and 2.5" by obs time (0700 MDT 10 Oct). S-/S-- most of the night. Precip 0.20". |
| 10/11/2009 |
7:00 AM |
0.03 |
1.0 |
M |
2.5 |
M |
S- brought 1.0" fluffy new snow from 0700 thru noon 10 Oct 2009, bringing total depth to 3.0" at noon (max observed). |
| 10/12/2009 |
7:00 AM |
T |
T |
M |
1.0 |
M |
ZL--,SG-- 0600 to 1300 MDT 11 Oct 2009. Trace precip
and trace accumulation. |
| 10/13/2009 |
7:00 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Snow melted by noon 12 Oct 2009. Drizzle very early 13 Oct 2009, time unknown. Precip .01". |
| 10/14/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/15/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/16/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/17/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/18/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/19/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/20/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/21/2009 |
7:20 AM |
0.21 |
T |
M |
T |
M |
Very light drizzle began 1800 MDT 20 Oct 2009. Occasional RW-/R- through the evening and night, changing to S-, probably ~0600 MDT 21 Oct 2009. At 0720 MDT 21 Oct, S- falling, trace of slush on the ground. Precip so far 0.21". |
| 10/22/2009 |
7:00 AM |
0.16 |
T |
M |
0.0 |
M |
S- until mid-morning 21 Oct 2009, changing back to mostly R- with a few melting snow grains mixed in by 1030 MDT. Then R- or L- slowly decreasing and ending by 1500 MDT. Precip since 0700 MDT 21 Oct .16". At most, a trace of slush on the ground at any time. |
| 10/23/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/24/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/25/2009 |
7:00 AM |
0.02 |
0.0 |
M |
0.0 |
M |
RW- 2300-2330 MDT 24 Oct 2009. Precip .02". |
| 10/26/2009 |
7:00 AM |
0.23 |
0.8 |
M |
0.8 |
M |
Slight drizzle 0700-0930 MDT 25 Oct 2009 (trace precip). S- 0930-1100 MDT. Snow did not stick on warm ground. Precip .02". S-, occasionally S 1315-1430 MDT with 0.5" accumulation, then occasional SW-/
SW with quarter-sized flakes 1430-1600 MDT. Little additional accumulation. At 1800 MDT, precip +.13".
SW-/SPW- 1800-1930 MDT. Precip +.08, new accumulation 0.3" for max on ground of 0.8". 24-h precip .23". |
| 10/27/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 10/28/2009 |
7:10 AM |
0.93 |
4.3 |
0.68 |
4.3 |
0.68 |
Brief light sprinkle ~1700 MDT 27 Oct 2009 (trace precip). R-/RW- began 1800 MDT, changed over to S- at 1920 MDT, by which time precip was .13". S- or S all night, with brief lulls between 0300 and 0600 MDT 28 Oct. At 0710 MDT (obs time), 4.3" accumulation with a water content of .80". I didn't believe this snow density so took a core sample: 0.68", consistent with some bottom melting. This is some of the densest Colorado snow I have measured. 24-h precip 0.93". |
| 10/29/2009 |
7:00 AM |
0.67 |
13.2 |
M |
17.5 |
M |
Continuous precipitation for the past 24 hours. S-3/4 0700-0800 MDT 28 Oct 2009, then S3/8-1/2 until 1500 MDT, then S- through obs time at 0700 MDT 29 Oct. During daylight hours on 28 Oct, large flakes often, consisting of numerous small dendritic crystals, contributing to very fluffy snowfall. Precip 0710-1500 MDT 28 Oct .38"; 1500-2215 MDT +.18"; 2215 MDT 28 Oct to 0700 MDT 29 Oct +.11". Total snow depths 12.5" at 1500 MDT 28 Oct, 17.2" at 2215 MDT 28 Oct and 17.5" at 0700 MDT 29 Oct. I only measured total depth at these times and did not sweep and measure incremental accumulation because snowfall was continuous. 24-h precip .67". |
| 10/30/2009 |
7:00 AM |
0.12 |
1.0 |
M |
13.5 |
M |
S- most of the day 29 Oct 2009 with sun usually dimly visible. About 1.0" additional accumulation, but total depth decreased from 17.5" at 0700 MDT to 16.0" by early afternoon. Snow ended sometime late afternoon or early evening. Precip .07" from 0700 MDT 29 Oct to 1330 MDT, +.05" thereafter. Snow depth down to 13.5" by 0700 MDT 30 Oct 2009.
|
| 10/31/2009 |
7:00 AM |
0.00 |
0.0 |
M |
8.0 |
M |
|
| 11/1/2009 |
7:00 AM |
0.00 |
0.0 |
M |
1.5 |
M |
|
| 11/2/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patches of snow remain in shady areas. |
| 11/3/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow in well shaded areas. |
| 11/4/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/5/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/6/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/7/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/8/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/9/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/10/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/11/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/12/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/13/2009 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 11/14/2009 |
7:00 AM |
0.07 |
0.4 |
M |
T |
M |
RW-- began 1430 MST 13 Nov 2009, small drops (trace precip), changed to SW- by 1450 MST and continued until 1630 MST. 0.4" snow accumulated on grass. Precip .07". Snow mostly melted overnight. Only a trace left at obs time (0700 MST 14 Nov) |
| 11/15/2009 |
7:00 AM |
0.88 |
7.8 |
M |
7.8 |
M |
SW- began 1330 MST 14 Nov 2009, became S- by 1400 MST. No accumulation until 1600 MST. Estimated 1.0" accumulation by 2000 MST. By 2205 MST 14 Nov, accumulation 4.1" with precip of .37" so far. S or S- (small flakes) all night. At 0700 MST 15 Nov 2009, S-5/8, accumulation 7.8", precip since 2205 MST +.51" for 24-h total of .88". |
| 11/16/2009 |
7:00 AM |
0.04 |
0.4 |
M |
6.5 |
M |
S- tapered off after 0700 MST 15 Nov 2009, and ended by 1000 MST. Max accumulation 8.2" at 1000 MST. Precip 0700-1000 MST 15 Nov .04" resulting from 0.4" new accumulation. 6.5" remained on ground at 0700 MST 16 Nov. |
| 11/17/2009 |
7:00 AM |
0.00 |
0.0 |
M |
3.5 |
M |
|
| 11/18/2009 |
7:00 AM |
0.00 |
0.0 |
M |
2.5 |
M |
|
| 11/19/2009 |
7:00 AM |
0.00 |
0.0 |
M |
1.5 |
M |
1.5" of crusty snow remains at 0700 MST 19 Nov 09. |
| 11/20/2009 |
7:00 AM |
0.00 |
0.0 |
M |
1.0 |
M |
Snow cover no longer continuous. 60% coverage at 0700 MST 20 Nov with an average of 1.0" left. |
| 11/21/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 11/22/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 11/23/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 11/24/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 11/25/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shady areas. |
| 11/26/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shady areas. |
| 11/27/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shady areas |
| 11/28/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well shaded areas. |
| 11/29/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well shaded areas. |
| 11/30/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well shaded areas. |
| 12/1/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well shaded areas. |
| 12/2/2009 |
7:00 AM |
0.23 |
4.9 |
M |
4.9 |
M |
S- began at 2200 MST 01 Dec 2009, continued the rest of the night. At obs time, 4.9" accumulation with a water content of 0.23". |
| 12/3/2009 |
7:00 AM |
0.06 |
0.8 |
M |
4.0 |
M |
S- with embedded SW1/2 0700-0830 MST 02 Dec 2009, then snow tapered off and ended by 1000 MST. New accumulation 0.7" with a water content of .05". Max depth estimated at 5.6" at 1000 MST. S- around 0130 MST 03 Dec left 0.1" more accumulation with .01" precip. 24-h total precip .06". 4.0" snow on ground at 0700 MST 03 Dec. |
| 12/4/2009 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
Min temperature -1 deg F early hours of 04 Dec. |
| 12/5/2009 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
3.0" snow remains on the ground |
| 12/6/2009 |
7:10 AM |
0.13 |
3.1 |
M |
6.0 |
M |
S- began ~2215 MST 05 Dec 2009, continued lightly through most of the night. Est 1" accumulation by 0400 MST 06 Dec. After that, occasional S1/2, with variable snowfall rate. At obs time, 0710 MST 06 Dec, S-7/8, 13 deg F, new snow 3.1", precip .13", total depth 6.0". |
| 12/7/2009 |
7:00 AM |
0.10 |
1.0 |
M |
6.5 |
M |
S1/2 0700-0730 MST 06 Dec 2009, then S-, tapering off to S-- by 0900 MST. 0.3" accumulation 0700 to 0900 MST with water content of .03". S-- or SW-- nearly continuous thru late afternoon (trace), then S-, tiny crystals 1700-2200 MST. This period of S- brought 0.7" new accumulation and .07" precip. S-- or ice crystals the rest of the night (trace). 24-h precip .10", new snow 1.0", 6.5" on ground at 0700 MST 07 Dec. |
| 12/8/2009 |
7:00 AM |
0.06 |
0.6 |
M |
6.0 |
M |
S- 0430 to 0630 MST 08 Dec 2009. 0.6" of new accumulation, precip .06". 6.0" of snow on the ground at 0700 MST 08 Dec. |
| 12/9/2009 |
7:00 AM |
0.03 |
0.3 |
M |
5.5 |
M |
S- 0800-1000 MST 08 Dec 2009. Then S-- or SW-- midday.
S- again 1500-1600 MST. Total precip .03". New accumulation 0.3" Snow depth at obs time 5.5" (0700 MST 09 Dec). Min temp reached at obs time, -11.5 deg F, coldest since -12 deg F on 15 Dec 2008. |
| 12/10/2009 |
7:00 AM |
0.00 |
0.0 |
M |
4.5 |
M |
Cold downslope winds last night causing blowing and drifting snow. Min temp -1 F on the evening of 09 Dec 2009 before onset of winds. Temperature rose slowly toward 20 F during the night. At obs time (0700 MST 10 Dec), 4.5" packed snow remained on ground. |
| 12/11/2009 |
7:00 AM |
0.00 |
0.0 |
M |
4.5 |
M |
4.5" snow remains on ground. Very sharp inversion at 0700 MST 12 Dec 2009. 1 deg F at my home (the morning min) while simulataneously 31 deg F at NCAR Mesa site, just 600 ft higher in elevation and only 2 miles SW. |
| 12/12/2009 |
7:00 AM |
0.00 |
0.0 |
M |
4.0 |
M |
4.0" snow remains on ground. Temperature rose from
min of 1 deg F at 0700 MST 11 Dec 2009 to 43 deg F early in the afternoon, aided by light downslope winds. |
| 12/13/2009 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
3.0 inches of snow remains on ground. |
| 12/14/2009 |
7:00 AM |
T |
0.0 |
M |
2.0 |
M |
Brief RW--, blowoff from the Divide, ~1100 MST 13 Dec 2009. Trace precip. Two inches of snow on ground at obs time. |
| 12/15/2009 |
7:00 AM |
0.00 |
0.0 |
M |
1.0 |
M |
1.0 crusty snow remains on ground. |
| 12/16/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Persistent mild days and frequent downslope winds brought the end of continuous snow cover by late afternoon 15 Dec 2009. Most ground exposed to sun is now bare. Snow remains in shaded areas. |
| 12/17/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shady areas. |
| 12/18/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains on ground in shaded areas. |
| 12/19/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 12/20/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 12/21/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 12/22/2009 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in well shaded areas. |
| 12/23/2009 |
6:00 AM |
0.23 |
3.1 |
M |
3.1 |
M |
S-- began 1930 MST 22 Dec 2009 but slowly picked up in intensity. Ground was white by 2030L. Light, occasionally moderate snow, 2300 MST 22 Dec thru 0300 MST Wed, then slackening to S-- by 0400 MST. At 0600 MST, S-2, 3.1" on ground, precip .23". |
| 12/24/2009 |
7:00 AM |
0.33 |
6.0 |
M |
9.1 |
M |
S- continued all day 23 Dec 2009, increasing in late afternoon, than tapering off late evening and ending near midnight. Precip from 0600 MST 23 Dec thru 0700 MST 24 Dec .33". New snow accumulation 6.0". |
| 12/25/2009 |
7:00 AM |
0.00 |
0.0 |
M |
7.5 |
M |
|
| 12/26/2009 |
7:00 AM |
0.01 |
0.1 |
M |
6.5 |
M |
S- began approximately 0500 MST 26 Dec 2009 and continues at obs time. Precip .01"; new accumulation 0.1"; total accumulation on ground 6.5". |
| 12/27/2009 |
7:00 AM |
0.03 |
0.3 |
M |
5.0 |
M |
S- continued until ~1100 MST 26 Dec 2009. 0.3" new accumulation; precip .03". Depth on ground at 0700 MST 27 Dec 5.0". |
| 12/28/2009 |
7:00 AM |
0.00 |
0.0 |
M |
4.5 |
M |
|
| 12/29/2009 |
7:00 AM |
0.00 |
0.0 |
M |
4.5 |
M |
|
| 12/30/2009 |
7:00 AM |
0.00 |
0.0 |
M |
4.0 |
M |
|
| 12/31/2009 |
7:00 AM |
0.00 |
0.0 |
M |
3.5 |
M |
|
| 1/1/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.5 |
M |
|
| 1/2/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
|
| 1/3/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.5 |
M |
|
| 1/4/2010 |
7:00 AM |
0.01 |
0.1 |
M |
2.5 |
M |
SW- 1325-1445 MST 03 Jan 2010 and again 1530-1545 MST. Precip .01. New snow accumulation 0.1" only on top of old snow. Only a trace new accumulation on bare turf, and none elsewhere. Total on ground at obs time still 2.5". |
| 1/5/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.5 |
M |
|
| 1/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.0 |
M |
|
| 1/7/2010 |
7:00 AM |
0.15 |
2.8 |
M |
4.5 |
M |
S-- began 0800 MST 06 Jan 2010 following passage of strong Arctic front about an hour earlier. S- by 0900 MST, continued all day, except episodes of S1/2 middle and late afternoon. S- after 1730 MST, becoming S-- by 2000 MST, ending before midnight. 2.8" new snowfall with a water content of .15". Total depth at obs time 4.5". Min temp -8 deg F at 0730 MST 07 Jan 2010. |
| 1/8/2010 |
7:00 AM |
0.00 |
0.0 |
M |
4.0 |
M |
|
| 1/9/2010 |
7:00 AM |
0.00 |
0.0 |
M |
4.0 |
M |
|
| 1/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.5 |
M |
|
| 1/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
|
| 1/12/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
|
| 1/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.5 |
M |
Large bare spots are appearing around trees. Otherwise average snow depth still 2.5". |
| 1/14/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.0 |
M |
|
| 1/15/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.0 |
M |
Average of 2.0" snow remains on ground, but only 75% coverage on open, grassy fields. |
| 1/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
About 2" of crusty snow remains but only 40% coverage in open grassy areas of the neighborhood, so "official" snow cover recorded as trace. Several inches of snow remain in shady areas. |
| 1/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Several inches of snow remain in shady areas. Most open areas nearly bare. |
| 1/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Shady areas still snow-covered. |
| 1/19/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow cover remains in shaded areas. |
| 1/20/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow cover remains in shaded areas. |
| 1/21/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 1/22/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 1/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow cover remains in shaded areas. |
| 1/24/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow cover remains in shaded areas. |
| 1/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 1/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 1/27/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow cover remains in shaded areas. |
| 1/28/2010 |
7:00 AM |
0.10 |
0.8 |
M |
0.8 |
M |
S- began 1730 MST 27 Jan 2010, continued until after 2400 MST. Estimated end time 0200 MST 28 Jan. Freezing drizzle 0400-0600 MST 28 Jan. At 0700 MST 28 Jan, snow accumulation 0.8", precip .10"
|
| 1/29/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.5 |
M |
Rather spectacular hoarfrost this morning, a rare event, following widespread fog in Boulder last night. 0.5" snow remains on ground. |
| 1/30/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains on shaded ground. |
| 1/31/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 2/1/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 2/2/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 2/3/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in shady areas. |
| 2/4/2010 |
7:00 AM |
0.01 |
0.1 |
M |
0.1 |
M |
S- early 04 Feb 2010, mostly likely time between 0400 and 0600 MST but not observed while falling. Precip .01". Accumulation 0.1". |
| 2/5/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in shaded areas. |
| 2/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in shaded areas. |
| 2/7/2010 |
7:00 AM |
T |
T |
M |
T |
M |
Light snow began ~0630 MST 07 Feb 2010. Only a trace precip so far. Measureable snow remains in shaded areas. |
| 2/8/2010 |
7:00 AM |
0.23 |
2.5 |
M |
2.5 |
M |
S- all morning on 07 Feb 2010. About 1" accumulation by 1100 MST. S-- for most of the afternoon but occasional periods with no snowfall. S- resumed toward dark, continued all night, with a trace of freezing drizzle after midnight. At 0700 MST 08 Feb 2010, S- with heavily rimed crystals, almost pellets. Accumulation 2.5" on grass (max so far), precip 0.23". |
| 2/9/2010 |
7:00 AM |
0.09 |
3.6 |
M |
5.5 |
M |
S-3/4 most of the morning on 08 Feb 2010, becoming S- with visibility of 1 mile or greater after 1130 MST. Snow mostly very light after 1800 MST. At 1900 MST, 6.0" on the ground, 3.6" new since 0700 MST, the latter with a liquid equivalent of .08", representing a 45:1 depth ratio and very fluffy snow. .01" precip after 1900 MST 08 Feb. Max depth estimated at 6.1" and new snow for the day estimated at 3.6". By 0700 MST 09 Feb, snow had settled to 5.5" depth. Min temp 2 deg F. |
| 2/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.0 |
M |
|
| 2/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.0 |
M |
|
| 2/12/2010 |
7:00 AM |
0.00 |
0.0 |
M |
1.0 |
M |
|
| 2/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.5 |
M |
Snow cover is becoming spotty. About 2/3 of open, grassy areas still covered. |
| 2/14/2010 |
7:00 AM |
0.08 |
1.9 |
M |
1.9 |
M |
S- began ~0200 MST 14 Feb 2010. Estimated 1" accumulation by 0400 MST. At 0700 MST, S-, visibility
3 miles, accumulation 1.9", precip .08". |
| 2/15/2010 |
7:00 AM |
T |
T |
M |
0.5 |
M |
S-3 at start of observing period, 0700 MST 14 Feb 2010. Brief SW-3/4 at 0815 MST, then diminishing snow, ending at 0840 MST. Only a trace additional snow recorded. 0.5" still on ground this morning at 0700 MST 15 Feb 2010. |
| 2/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. Open grassy areas only 10% covered. |
| 2/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 2/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains on the ground in shady areas. |
| 2/19/2010 |
7:00 AM |
0.22 |
2.8 |
M |
2.8 |
M |
SW- began 1330 MST 18 Feb 2010, briefly S1/2 in mid-afternoon, then slowly tapering off toward evening and ending by midnight. Precip .22", accumulation 2.8". |
| 2/20/2010 |
7:00 AM |
0.06 |
0.3 |
M |
3.0 |
M |
SW- 0745-0830 MST 19 Feb 2010. Then several very light snow showers during the day. S- or S-- in the evening and night of 19 Feb, ending after midnight.
At 0700 MST 20 Feb, total on ground 3.0", 0.3" new accumulation, and 24-h precip .06". |
| 2/21/2010 |
7:00 AM |
0.23 |
3.9 |
M |
6.2 |
M |
Occasional S-- began ~0800 MST 20 Feb 2010. SW- ~1030-1100 MST. Brighter skies but still overcast midday. One or two SW- during the afternoon. By late afternoon a tenth of an inch or two of new accumulation. SW3/8 early evening and again once or twice more the night of 20 Feb, ending by 0400 MST 21 Feb. At 0700 MST 21 Feb, 6.2" total on ground, 3.9" new. 24-h precip .23". |
| 2/22/2010 |
7:00 AM |
0.14 |
2.5 |
M |
8.2 |
M |
Occasional S-- began during the morning on 21 Feb 2010. Occasional SW-3/4 early and mid afternoon with S-- in between. At 1715 MST, 7.1" on the ground, most so far, 0.9" new (since 0700 MST), precip .05". Steady S- began during the evening. At 2200 MST 21 Feb, S- continuing, with an estimated 1" new. Little accumulation after midnight. S-- ended 0600 MST 22 Feb. At 0700 MST, 1.6" new since 1715 MST 21 Feb, precip +.09, total on ground 8.2" (max). |
| 2/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
5.0 |
M |
|
| 2/24/2010 |
7:00 AM |
0.00 |
0.0 |
M |
4.0 |
M |
|
| 2/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.5 |
M |
|
| 2/26/2010 |
7:00 AM |
0.05 |
0.3 |
M |
3.0 |
M |
SW- began 1500 MST 25 Feb 2010, became S- by 1600 MST and slowly diminished until ending by 2000 MST. New accumulation 0.3". Precip .05". Total on ground at 0700 MST 26 Feb 3.0" of crusty snow. |
| 2/27/2010 |
7:00 AM |
0.00 |
0.0 |
M |
2.0 |
M |
Remaining snow (2.0") is crusty. |
| 2/28/2010 |
7:00 AM |
0.00 |
0.0 |
M |
1.0 |
M |
Snow cover is getting spotty. My standard spot for checking snow cover is Thunderbird Lake, a few blocks away, in an large. flat open area of cut grass. Snow cover at obs time had shrunk to 2/3 of the total area. |
| 3/1/2010 |
7:00 AM |
0.06 |
0.6 |
M |
1.0 |
M |
Light snow began 1445 MST 28 Feb 2010, began sticking to grass at 1530 MST. Snow ended 2000 MST, with 0.6" new accumulation, containing .06" of liquid water. At obs time 1.0" total accumulation |
| 3/2/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. Bare ground in sunny areas. |
| 3/3/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains on ground in shaded areas. |
| 3/4/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 3/5/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 3/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas |
| 3/7/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in shaded areas. |
| 3/8/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow remains in well shaded areas. |
| 3/9/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well shaded areas. |
| 3/10/2010 |
7:00 AM |
T |
0.0 |
M |
T |
M |
Patchy snow in well shaded areas is almost gone.
RW-- between 2000 and 2200 MST 09 Mar 2010. Trace precip. |
| 3/11/2010 |
7:00 AM |
0.13 |
0.6 |
M |
0.5 |
M |
RW-- began ~1300 MST 10 Mar 2010, became mixed with SW- an hour later, then all snow showers by 1500 MST, occasionally moderate. Ground whitened by 1600. SW- continued thru 1700 MST. At 1810 MST, SW-, 0.6" accumulation, 0.11" pcpn. Snow ended ~1830L. An additional .02" pcpn fell overnight but time unknown.
24-h pcpn .13". At 0700 MST 11 Mar 2010, 0.5" on ground, but nothing under trees. |
| 3/12/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well-shaded areas. |
| 3/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
This is the first morning (13 Mar 10) that there was NOT at least a trace of snow on the ground since last November. |
| 3/14/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 3/15/2010 |
7:00 AM |
0.32 |
0.5 |
M |
0.5 |
M |
S-- began 1145 MST 14 Mar 2010. Mixed drizzle and S- persisted throughout the afternoon becoming all S- by 18L. Snow did not stick at all until ~1900 MST. I estimate that precip ended ~2400 MST. At 0700 MST 15 Mar 2010, 0.5" snow on the ground (ground was bare when snow began), precip .32". |
| 3/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 3/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 3/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 3/19/2010 |
7:00 AM |
0.28 |
2.3 |
M |
2.3 |
M |
Occasional RW- began ~0100 MDT, Friday, 19 Mar 2010. Temperature fell below freezing ~ 0230 MDT. Freezing drizzle with a trace of slush on the ground at 0300 MDT. An estimated 0.5" accumulation on the ground by 0530 MDT with S- falling. Snowfall increased 0615 MDT following secondary push of cold air. At obs time, 0700 MDT, S 1/2, 27 deg F, 2.3" accumulation, precip so far .28". |
| 3/20/2010 |
7:00 AM |
0.63 |
8.9 |
M |
11.0 |
M |
Moderate snow was falling at 0700 MDT 19 Mar 2010 at start of observation period. S+1/4 from 0745-0845 MDT, then S 3/8 to S 1/2. At 0910 MDT, S 3/8 and 5.0" of snow on the ground. At 1115 MDT, S 3/8, 7.2" on the ground, precip since 0700 MDT .34". Several heavy showers (SW+ 3/16 to SW+1/4 lasting ~10 min) embedded in moderate snow between 1045 and 1315 MDT.
Accumulating snow ended abruptly at 1500 MDT. At 1530 MDT, S--3, 10.6" accumulation, precip since 1115 MDT +.18. S- resumed at 1640 MDT, ending for good at 2130 MDT. At 2145 MDT, max total depth measured: 11.2". Precip since 1530 MDT +.11, for 24-h total of .63". Clearing early 20 March. Min at dawn, 20 March, a surprising 5 deg F. |
| 3/21/2010 |
7:00 AM |
0.00 |
0.0 |
M |
4.5 |
M |
|
| 3/22/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
1-2" of snow remains on ground in shaded areas, but 60% of ground is clear of snow in open areas of my neighborhood. |
| 3/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains in well shaded areas. |
| 3/24/2010 |
6:50 AM |
1.26 |
11.0 |
M |
11.0 |
M |
Occasional sprinkles began 1230 MDT 23 Mar 2010 (trace). R- began 1300 MDT. Mix of RW- and SW- between 1500 and 1615 MDT. S+ with visibility 1/4 mile or less 1630-1830 MST, then very slowly decreasing snowfall all night, but always accumulating. At 1915 MDT, 32 deg F, S3/8, 5.5" on ground, precip .75", of which .10" fell as rain (determined from core sample). At 2235 MDT, 29 deg F, S1/2, 8.3" on ground, precip +.23". At obs time (0700 MDT 24 Mar 2010), 28 deg F (minimum during storm), S-3/4, 11.0" on ground, all new, precip since 2235 MDT 23 Mar +.28". 24-h total is 1.26". |
| 3/25/2010 |
7:00 AM |
0.04 |
0.3 |
M |
5.5 |
M |
Light snow ended 0815 MDT 24 Mar 2010. An additional .04" precip and 0.3" accumulation occurred after the obs time of 0650 MDT. At today's obs time (0700 MDT 25 Mar), 5.5" of very crusty snow remains on the ground. |
| 3/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
3.5 |
M |
3.5" of very crusty snow remains on ground. |
| 3/27/2010 |
7:00 AM |
0.04 |
0.0 |
M |
3.0 |
M |
Occasional sprinkles of rain 1300-1500 MDT 26 Mar 2010 in the vicinity and widespread virga. Trace precip. RW- began 1545, became mixed with SW- ~1700L and ended 1815 MDT. No accumulation of snow; temperature was in the middle and upper 30s at the time. Precip .04". At 0700 MDT 27 March, 3.0" of crusty snow remains. Bare spots around trees. |
| 3/28/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Snow cover dropped to less than 50% in open areas late yesterday before sunset. Only 40% coverage this morning, less than an inch deep. |
| 3/29/2010 |
7:00 AM |
0.00 |
0.0 |
M |
T |
M |
Patchy snow remains only in well shaded areas. |
| 3/30/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 3/31/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/1/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/2/2010 |
7:00 AM |
T |
T |
M |
0.0 |
M |
TSPW- (graupel showers, light intensity, with thunder) 1515-1530 MDT 01 Apr 2010. One long rumble of thunder. Trace precip. Most graupel 1/4" in diameter, but a very few pellets up to 3/8" in size. Almost no rain mixed in. Temperature 45 deg F during shower. Trace precip. Another SPW-- ~1700 MDT (<1/8" in size) with west winds gusting to 40 mph. Trace precip. |
| 4/3/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/4/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/5/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/6/2010 |
7:00 AM |
0.02 |
0.0 |
M |
0.0 |
M |
Brief RW- for a few minutes at 0415 MDT 06 Apr 2010.
Precip .02" |
| 4/7/2010 |
7:00 AM |
0.10 |
2.3 |
M |
2.3 |
M |
Snow (S-) began shortly after 0300 MDT 07 Apr 2010, continued until 0750 MDT. Precip .10", accumulation 2.3" on grass. Snow did not stick to pavement. |
| 4/8/2010 |
7:00 AM |
T |
T |
M |
0.0 |
M |
Snow ended by 0800 MDT 07 Apr 2010. Only a trace additional precip and a trace of accumulation. Snow melted everywhere by 1300 MDT 07 Apr 2010. |
| 4/9/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/12/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/14/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/15/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/18/2010 |
7:00 AM |
0.02 |
0.0 |
M |
0.0 |
M |
RW- 1315-1415 MDT 17 Apr 2010. Precip .02". |
| 4/19/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/20/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/21/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/22/2010 |
7:00 AM |
0.77 |
0.0 |
M |
0.0 |
M |
RW- 1700-1730 MDT 21 Apr 2010. Perhaps a few hundredths pcpn. TRW 2030-2100 MDT, with est. .40" pcpn, then R- until 0200 MDT 22 Apr. 24-h pcpn ending at 0700 MDT 22 Apr 0.77". |
| 4/23/2010 |
7:00 AM |
0.54 |
0.0 |
M |
0.0 |
M |
RW- 0900-0930 MDT 22 Apr 2010. Pcpn .03". Moderate rain and showers 1830-2115 MDT. Pcpn +.41". R- began again 0430 MDT 0430 MDT 23 Apr. Pcpn +.10" up to obs time. |
| 4/24/2010 |
7:00 AM |
0.92 |
1.5 |
M |
0.0 |
M |
R- in progress at start of obs period (0700 MDT 23 Apr 2010), ended 0900 MDT. R- began 1030 MDT, quickly became R. Rain changed to S+ at 1220 MDT, becoming S by 1315 MDT, then quickly ending by 1345 MDT. A few RW-/RW-- late afternoon and early night but additional precip was inconsequential. A quick 1.5" of snow accumulated midday but melted later in the afternoon as tempererature rebounded to mid 40s. 24-h precip .92". |
| 4/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/26/2010 |
7:00 AM |
0.49 |
2.0 |
M |
2.0 |
M |
RW-/R- began 1630 MDT 25 Apr 2010. At 3020 MDT, 36 deg, R- continuing, precip .32". R- changed to S-, which continued until ~0400 MDT 26 Apr. Precip +.17". 2.0" of wet snow accumulated. Min temperature 32 deg during snowfall. 24-h total precip .49" |
| 4/27/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
All snow melted by noon 26 Apr 2010. |
| 4/28/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 4/29/2010 |
7:05 AM |
0.23 |
0.4 |
M |
0.4 |
M |
RW- began 2230 MDT 28 Apr 2010. Steady R- after 0100 MDT 29Apr, changing to snow between 0500 and 0600 MDT. At obs time, still snowing (S-5/8), 0.4" accumulation on deck rail. 0.11" precip fell as liquid, .12" as snow for a total of .23". |
| 4/30/2010 |
7:00 AM |
0.12 |
1.1 |
M |
0.0 |
M |
Accumulating snow ended at 0830 MDT 29 Apr 2010. All snow ended by 0900 MDT. Precip since 0700 MDT .12". New accumulation 1.1" Max on ground at 0830 MDT 1.5". All snow melted by noon. |
| 5/1/2010 |
7:00 AM |
0.01 |
0.0 |
M |
0.0 |
M |
Intermittent showers in the area from 1315-1445 MDT 30 Apr 2010, mostly SPW- (1-2 mm dia), with perhaps a few raindrops mixed in. 44 deg at one point during showers. Precip .01. No accumulation. |
| 5/2/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/3/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
A few rain sprinkles midday 02 May 2010. Trace precip. |
| 5/4/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/5/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
Brief light rain shower 1905-1910 MDT 04 May 2010. Trace precip, blown east from Divide in strong downslope flow. |
| 5/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/7/2010 |
7:00 AM |
0.18 |
0.5 |
M |
0.5 |
M |
RW- began 1330 MDT 06 May 2010, lasted ~15 min. Several other lighter RW- later in the afternoon and night. Precip changed to S- at midnight and continued til about 0300 MDT 07 May. Total precip .18". Snow accumulation 0.5", still on ground at obs time. Min temperature 32 deg. |
| 5/8/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Snow melted quickly the morning of 07 May 2010. |
| 5/9/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/12/2010 |
7:00 AM |
1.19 |
5.5 |
M |
5.5 |
M |
R- began ~1645 MDT 11 May 2010, continued during the evening with embedded showers. 38 deg F with R- at 1900 MDT. Precip so far .27". Snow pellets mixed in briefly ~1945 MDT. By 2030 MDT, temperature had fallen to 33 deg and R- had mostly changed to SP-S-. New precip +.12". S- and S for rest of the night, with the heaviest snowfall after 0100 MDT 12 May. At 0540 MDT 12 May, 4.3" on deck rails, 5.5" (max) on grass, snow stopped, 32 deg F, precip since 2030 MDT +.80. Drizzle falling at obs time, 0700 MDT 12 May, but only a trace precip since snow stopped. |
| 5/13/2010 |
7:00 AM |
0.12 |
T |
M |
1.0 |
M |
Drizzle began ~0700 MDT 12 May 2010, continued until ~1300 MDT. R- alternating with S-, sometimes a mixture, began ~1700 MDT, continued until late at night. Trace additional accumulation of snow. At obs time (0700 MDT 13 May), 1" of slushy snow remains on the ground. 24-h precip .12". |
| 5/14/2010 |
7:00 AM |
0.18 |
0.0 |
M |
0.0 |
M |
RW-/R- began 1850 MDT 13 May 2010, continued until 0030 MDT 14 May. Precip .18". All snow melted by midday 13 May. |
| 5/15/2010 |
7:00 AM |
0.28 |
0.0 |
M |
0.0 |
M |
Few sprinkles as early as 1345 MDT 14 May 2010 (trace). Steady R- began ~1730 MDT, ended ~2000 MDT. RW- 2300-2400 MDT. Total precip .28". |
| 5/16/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
A few sprinkles mid-afternoon, 15 May 2010. Trace precip. |
| 5/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/19/2010 |
7:00 AM |
0.24 |
0.0 |
M |
0.0 |
M |
TRWA 1852-1905 MDT 18 May 2010. Hail size mostly 1/8" but a few stones as large as 1/4" in diameter. Brief RW- at 1925 MDT. Total precip .24". |
| 5/20/2010 |
7:00 AM |
0.02 |
0.0 |
M |
0.0 |
M |
TRW- between 1200 and 1300 MDT 19 May 2010. Precip .02". |
| 5/21/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/22/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/24/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/27/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
Thunder nearby in the evening but only a trace of rain ~1750 MDT 26 May 2010 |
| 5/28/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/29/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 5/30/2010 |
7:00 AM |
0.55 |
0.0 |
M |
0.0 |
M |
Thunder began ~ 1730 MDT 29 May 2010. TRW+ with hail to 1/4" 1815 to 1830 MDT, then TRW- off an on until 2000 MDT. Rain ended ~2100 MDT. Precip .55. Hail could still be found in the grass at 2100 MDT. Enough
hail to put holes in spinach leaves and bring a few leaves off trees, otherwise no damage. |
| 5/31/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/1/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/2/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/3/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/4/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/5/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/7/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/8/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/9/2010 |
7:00 AM |
0.02 |
0.0 |
M |
0.0 |
M |
RW- passed from W to E across S Boulder 1830-1850 MDT
08 Jun 2010. Precip only .02". No thunder heard. |
| 6/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/11/2010 |
7:00 AM |
0.08 |
0.0 |
M |
0.0 |
M |
Occasional sprinkles 1400-1600 MDT 10 Jun 2010. Thunder heard around 1500 MDT. Trace precip. TRW- 1755-1825 MDT. Precip .08". |
| 6/12/2010 |
7:00 AM |
1.42 |
0.0 |
M |
0.0 |
M |
TRW- 1500-1545 MDT 11 Jun 2010. Precip .10". TRW+A 1750-1757 MDT, with brief 1/8" hail and an estimated .25" precip in 7 minutes. Then TRW-/RW- off and on the rest of the night. Precip measured at 2045 MDT: +.50" since 1545 MDT. Thunder heard occasionally from 1230 to 0200 MDT 12 Jun 2010. TRW/RW during most of this time with an estimated .60" precip, then sprinkles or very light rain the rest of the night with only a few hundredths of an inch precip. At 0700 MDT, 24-h precip was 1.42". with drizzle still falling. |
| 6/13/2010 |
6:50 AM |
0.60 |
0.0 |
M |
0.0 |
M |
Light rain or drizzle most of the morning of 12 June 2010. Precip stopped ~1300 MDT, then resumed at 1500 MDT. At 1620 MDT, 49 deg F, R-, and .20" precip since 0700 MDT. Drizzle during the evening and late night. R- began ~ 0400 MDT 13 June. At 0650 MDT, R-, 47 deg F (minimum in past 24 h), 24-h total precip 0.60". Starting and ending times of precip not reported because rain was falling at the start and end of the observing period and most times in between. |
| 6/14/2010 |
7:00 AM |
0.29 |
0.0 |
M |
0.0 |
M |
R- was falling at the beginning of this obs period (0650 MDT 13 June 2010). R- changed to drizzle at 0800 MDT, then back to R- at 0945 MDT. Precip ended at 1130 MDT, with .20" so far. RW- 1630-1730 and again 1830-1915 MDT. Additional precip of +.09" for a 24-h total of .29". |
| 6/15/2010 |
7:00 AM |
0.09 |
0.0 |
M |
0.0 |
M |
Occasional RW- mid and late morning 14 June 2010. TRW- 1525-1535 MDT. Total precip .09" |
| 6/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/19/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/20/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
A few sprinkles between 1330 and 1530 MDT 19 June 2010. Trace precip. No thunder heard. |
| 6/21/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
A few sprinkles between 1815 and 1845 MDT 20 June 2010. Trace precip. Two rumbles of thunder from dissipating cell to SE. |
| 6/22/2010 |
7:00 AM |
0.08 |
0.0 |
M |
0.0 |
M |
TRW- 1430-1500 MDT 21 June 2010. Hail, mostly 1/4" in diameter, from 1445-1455 MDT, with a few stones to 1/2", not enough to damage lettuce and spinach in garden. |
| 6/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/24/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/27/2010 |
7:00 AM |
0.10 |
0.0 |
M |
0.0 |
M |
Thunder first heard 1530 MDT 26 June 2010. TRW- 1545-1605 MDT. Precip .04". TRW- again 1710-1730 MDT. Precip +.06" for a 24-h total of .10" |
| 6/28/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/29/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 6/30/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 7/1/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/2/2010 |
7:00 AM |
0.01 |
M |
M |
M |
M |
TRW- ~1800 MDT 01 July 2010. Precip .01" Sprinkles ~2100 MDT (trace). |
| 7/3/2010 |
7:00 AM |
0.12 |
M |
M |
M |
M |
RW- 1230-1330 and again between 1900 and 2300 MDT 02 July 2010. Precip .12" |
| 7/4/2010 |
7:00 AM |
0.03 |
M |
M |
M |
M |
TRW- 1445-1505 MDT 03 July 2010. Precip .03" |
| 7/5/2010 |
7:00 AM |
0.41 |
M |
M |
M |
M |
RW- 1750-1800 MDT 04 July 2010 (precip .03"), then TRW 1840-1910 MDT (precip +.38"). |
| 7/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/7/2010 |
7:00 AM |
0.18 |
M |
M |
M |
M |
RW- or TRW- 1800-1900 MDT 06 July 2010. Precip .18". |
| 7/8/2010 |
7:00 AM |
0.70 |
M |
M |
M |
M |
Drizzle 0400-1000 MDT 07 July 2010. TRW- 1315-1345. TRW-/TRW 1700-1745 MDT. 24-h total precip .70". |
| 7/9/2010 |
7:00 AM |
0.02 |
M |
M |
M |
M |
RW- 0100-0200 MDT 08 July 2010. TRW- late afternoon. 24-h total precip .02". |
| 7/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/12/2010 |
7:00 AM |
T |
M |
M |
M |
M |
A few sprinkles of rain from strong outflow ~1730 MDT 11 July 2010. Trace precip. |
| 7/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/14/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/15/2010 |
7:00 AM |
T |
M |
M |
M |
M |
RW-- (a few drops) ~2045 MDT 14 July 2010. |
| 7/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/19/2010 |
7:00 AM |
0.01 |
M |
M |
M |
M |
TRW-1530-1600 MDT 18 July 2010. Precip .01". |
| 7/20/2010 |
7:00 AM |
T |
M |
M |
M |
M |
TRW-- ~1500 MDT 19 July 2010. Trace precip. |
| 7/21/2010 |
7:00 AM |
0.02 |
M |
M |
M |
M |
Occasional RW- mid afternoon to early evening on 20 July 2010. Precip .02". |
| 7/22/2010 |
7:00 AM |
T |
M |
M |
M |
M |
TRW-- ~1530 MDT 21 July 2010 produced just a few drops of rain. Trace precip. |
| 7/23/2010 |
7:00 AM |
0.19 |
M |
M |
M |
M |
TRW- began 1805 MDT 22 Jul 2010 from cell moving slowly NE. TRW 1817-1825 MDT, then TRW-, ending 1835 MDT. Precip .19". |
| 7/24/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/27/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 7/28/2010 |
7:00 AM |
0.06 |
M |
M |
M |
M |
TRW- 1530-1605 MDT 27 Jul 2010. Precip .06". |
| 7/29/2010 |
7:00 AM |
0.01 |
M |
M |
M |
M |
Occasional sprinkles mid-afternoon thru early evening 28 July 2010 (trace). The one exception was a brief TRW- ~1700 MDT 28 July, which yielded .01" precip. |
| 7/30/2010 |
7:00 AM |
0.04 |
M |
M |
M |
M |
TRW- 1600-1645 MDT 29 July 2010. Precip .04". |
| 7/31/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/1/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/2/2010 |
7:00 AM |
0.03 |
M |
M |
M |
M |
RW- 1600-1630 MDT 01 August 2010. Precip .02". RW-, very light, 2000-2100 MDT. Precip +.01". 24-h total .03". |
| 8/3/2010 |
7:00 AM |
0.04 |
M |
M |
M |
M |
RW- began at 1635 MDT 02 Aug 2010, continued until 1715 MDT. Precip .04". |
| 8/4/2010 |
7:00 AM |
0.01 |
M |
M |
M |
M |
TRW-- 1500-1530 MDT 03 August 2010 (trace). RW- 2015-2045 MDT (.01"). |
| 8/5/2010 |
7:00 AM |
0.04 |
M |
M |
M |
M |
TRW- 1330-1440 MDT 04 Aug 2010. Precip .04". |
| 8/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/7/2010 |
7:00 AM |
0.06 |
M |
M |
M |
M |
TRW- late afternoon. Precip .06 |
| 8/8/2010 |
7:00 AM |
0.08 |
M |
M |
M |
M |
TRW-- 1730 MDT 07 Aug 2010 (trace). TRW- with gusty
winds ~0030 MDT 08 Aug 2010. Precip .08". |
| 8/9/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/10/2010 |
7:00 AM |
0.35 |
M |
M |
M |
M |
Occasional RW- 0800-0930 MDT 10 Aug 2010. Precip .03". TRW+ ~1500 MDT, lasted maybe 15 min. Precip .32". 24-h total .35". |
| 8/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/12/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/14/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/15/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/17/2010 |
7:00 AM |
0.45 |
M |
M |
M |
M |
TRW+ 1730-1750 MDT 16 Aug 2010 brought a quick .45" precip. Brief hail (quite small, ~1/8" dia) and close cloud-to-ground lightning. |
| 8/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/19/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/20/2010 |
7:00 AM |
0.03 |
M |
M |
M |
M |
A few drops of rain at 0900 MDT and again at 1615 MDT 19 Aug 2010. Trace precip. Line of weak TRW- passed 2000-2015 MDT with strong, gusty west winds (G45). Precip .03". |
| 8/21/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/22/2010 |
7:00 AM |
T |
M |
M |
M |
M |
A few drops of rain at 1630 MDT on 21 Aug 2010 on this otherwise dry and very warm day. |
| 8/23/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/24/2010 |
7:00 AM |
0.02 |
M |
M |
M |
M |
Few large drops ~1320 MDT 23 Aug 2010, more than a few again ~1500 MDT, each time with only a trace precip, but the second time with a rumble of thunder. Brief RW, large drops, only a few minutes long, produced .02" precip ~1530 MDT. |
| 8/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/27/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
Clear and dry. Large diurnal temperature range: 49 to 93 deg F during calendar 26 Aug 2010. |
| 8/28/2010 |
7:00 AM |
T |
M |
M |
M |
M |
Two moderate downbursts the afternoon of 27 Aug 2010. The first, at 1330 MDT, brought RW-- (trace) and gusts to 30 mph. The second, at 1630 MDT brought RW-- (trace) and gusts to 40 mph. |
| 8/29/2010 |
7:00 AM |
T |
M |
M |
M |
M |
Sprinkles of rain and gusty winds at 2100 MDT 28 Aug 2010. Trace precip. |
| 8/30/2010 |
7:00 AM |
0.00 |
0.0 |
M |
M |
M |
|
| 8/31/2010 |
7:00 AM |
0.20 |
M |
M |
M |
M |
Very localized TRW 1230-1240 MDT 30 Aug 2010 delivered
.20" precip. Cell moved NE. |
| 9/1/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
A few small drops of rain from high-based cumulus clouds late morning on 31 Aug 2010. Trace precip. |
| 9/2/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/3/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/4/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/5/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/6/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/7/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
06 Sep 2010 was an extremely dry day both at the surface and aloft. Windy at home (G30), more so in foothills west (G45). Fourmile Canyon fire began about 1000 MDT, worst in Boulder County history. |
| 9/8/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/9/2010 |
7:00 AM |
0.17 |
0.0 |
M |
0.0 |
M |
RW-- began at 1615 MDT 08 Sep 2010. RW--/RW- lasted until 1830 MDT. Precip .17". |
| 9/10/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/11/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/12/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/13/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/14/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/15/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/16/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/17/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/18/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/19/2010 |
7:00 AM |
T |
0.0 |
M |
0.0 |
M |
Slight drizzle, just enough to dampen the pavement,
mid-morning 18 Sep 2010, 1000-1130 MDT. |
| 9/20/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/21/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/22/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Lightning SE in the evening of 21 Sep 2010, but no rain here. |
| 9/23/2010 |
7:00 AM |
0.08 |
0.0 |
M |
0.0 |
M |
Sprinkles began 1330 MDT 22 Sep 2010, then occasional RW- from 1400 to 1800 MDT. Precip .07". More RW- began 2015 MDT. End time unknown. Precip +.01" for a 24-h total of .08". |
| 9/24/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/25/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/26/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/27/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
43 deg F temperature range on 26 Sep 2010: Min 43 deg
at dawn. Afternoon max 86 deg. |
| 9/28/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|
| 9/29/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
Large diurnal temperature range on 28 Sep 2010: from
44 F at dawn to 88 F in mid-afternoon. |
| 9/30/2010 |
7:00 AM |
0.00 |
0.0 |
M |
0.0 |
M |
|