Station Overview Station Location
Station Number CO-BO-30 Latitude 39.9915
Station Name Boulder 1.9 SE Longitude -105.2403
County Boulder Elevation (ft) 5368



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 12 1.39 1.33 31 1.33 31 0.00 0 0 8 2 8.0 3 5
Nov 12 1.04 0.26 30 0.26 30 0.00 0 0 1 3 0.3 1 1
Dec 12 0.79 0.43 31 0.43 31 0.00 0 0 4 3 10.4 4 11
Jan 13 0.64 0.25 31 0.25 31 0.00 0 0 3 4 4.5 3 12
Feb 13 0.63 1.14 28 1.14 28 0.00 0 0 9 2 16.5 7 10
March 13 1.86 1.72 31 1.72 31 0.00 0 0 8 4 20.3 7 14
April 13 2.34 3.83 30 3.83 30 0.00 0 0 12 1 37.3 7 12
May 13 2.66 2.63 31 2.63 31 0.00 0 0 12 4 10.6 2 3
June 13 2.16 0.99 30 0.99 30 0.00 0 0 6 6 0.0 0 0
July 13 1.67 0.93 31 0.93 31 0.00 0 0 15 2 0.0 0 0
Aug 13 1.76 1.26 31 1.26 31 0.00 0 0 13 8 0.0 0 0
Sept 13 1.61 19.18 30 19.18 30 0.00 0 0 13 0 0.0 0 0
Water Year Totals: 18.55" 33.95" 365 days 33.95" 365 0.00" 0 days 0 104 days 39 days 107.9" 34 days 68 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2012 0.01
10/2/2012 T
10/3/2012 0.00
10/4/2012 0.00
10/5/2012 0.01
10/6/2012 0.10
10/7/2012 0.04
10/8/2012 0.00
10/9/2012 0.00
10/10/2012 0.00
10/11/2012 0.00
10/12/2012 0.00
10/13/2012 0.03
10/14/2012 0.07
10/15/2012 0.00
10/16/2012 0.00
10/17/2012 T
10/18/2012 0.00
10/19/2012 0.00
10/20/2012 0.00
10/21/2012 0.00
10/22/2012 0.00
10/23/2012 0.00
10/24/2012 0.00
10/25/2012 0.82
10/26/2012 0.25
10/27/2012 0.00
10/28/2012 0.00
10/29/2012 0.00
10/30/2012 0.00
10/31/2012 0.00
11/1/2012 0.00
11/2/2012 0.00
11/3/2012 0.00
11/4/2012 0.00
11/5/2012 0.00
11/6/2012 0.00
11/7/2012 0.00
11/8/2012 0.00
11/9/2012 0.00
11/10/2012 T
11/11/2012 0.26
11/12/2012 0.00
11/13/2012 0.00
11/14/2012 0.00
11/15/2012 0.00
11/16/2012 T
11/17/2012 0.00
11/18/2012 0.00
11/19/2012 0.00
11/20/2012 0.00
11/21/2012 0.00
11/22/2012 0.00
11/23/2012 0.00
11/24/2012 0.00
11/25/2012 0.00
11/26/2012 0.00
11/27/2012 T
11/28/2012 0.00
11/29/2012 0.00
11/30/2012 0.00
12/1/2012 0.00
12/2/2012 0.00
12/3/2012 0.00
12/4/2012 0.00
12/5/2012 0.00
12/6/2012 0.00
12/7/2012 T
12/8/2012 0.00
12/9/2012 0.00
12/10/2012 0.00
12/11/2012 0.04
12/12/2012 0.00
12/13/2012 0.00
12/14/2012 0.00
12/15/2012 0.00
12/16/2012 0.00
12/17/2012 0.00
12/18/2012 0.00
12/19/2012 0.07
12/20/2012 0.04
12/21/2012 0.00
12/22/2012 0.00
12/23/2012 0.00
12/24/2012 0.00
12/25/2012 0.28
12/26/2012 T
12/27/2012 0.00
12/28/2012 T
12/29/2012 0.00
12/30/2012 0.00
12/31/2012 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2013 T
1/2/2013 0.00
1/3/2013 0.00
1/4/2013 0.00
1/5/2013 0.00
1/6/2013 0.00
1/7/2013 0.00
1/8/2013 0.00
1/9/2013 0.00
1/10/2013 0.00
1/11/2013 0.00
1/12/2013 T
1/13/2013 T
1/14/2013 0.02
1/15/2013 T
1/16/2013 0.00
1/17/2013 0.00
1/18/2013 0.00
1/19/2013 0.00
1/20/2013 0.00
1/21/2013 0.00
1/22/2013 0.00
1/23/2013 0.00
1/24/2013 0.00
1/25/2013 0.00
1/26/2013 0.00
1/27/2013 0.01
1/28/2013 0.00
1/29/2013 0.22
1/30/2013 0.00
1/31/2013 0.00
2/1/2013 0.00
2/2/2013 0.00
2/3/2013 0.00
2/4/2013 0.00
2/5/2013 0.00
2/6/2013 0.00
2/7/2013 0.01
2/8/2013 0.00
2/9/2013 0.00
2/10/2013 0.01
2/11/2013 T
2/12/2013 0.01
2/13/2013 0.00
2/14/2013 0.00
2/15/2013 0.14
2/16/2013 0.00
2/17/2013 0.00
2/18/2013 0.00
2/19/2013 0.00
2/20/2013 0.00
2/21/2013 0.43
2/22/2013 0.05
2/23/2013 0.00
2/24/2013 0.10
2/25/2013 0.32
2/26/2013 T
2/27/2013 0.07
2/28/2013 0.00
3/1/2013 0.00
3/2/2013 0.00
3/3/2013 0.00
3/4/2013 0.00
3/5/2013 0.13
3/6/2013 0.00
3/7/2013 0.00
3/8/2013 0.00
3/9/2013 0.09
3/10/2013 0.28
3/11/2013 0.00
3/12/2013 0.34
3/13/2013 0.02
3/14/2013 0.00
3/15/2013 0.00
3/16/2013 0.00
3/17/2013 T
3/18/2013 T
3/19/2013 0.00
3/20/2013 0.00
3/21/2013 0.00
3/22/2013 0.01
3/23/2013 0.59
3/24/2013 0.26
3/25/2013 T
3/26/2013 0.00
3/27/2013 0.00
3/28/2013 0.00
3/29/2013 T
3/30/2013 0.00
3/31/2013 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2013 0.00
4/2/2013 0.04
4/3/2013 0.52
4/4/2013 0.00
4/5/2013 0.00
4/6/2013 0.00
4/7/2013 0.00
4/8/2013 0.00
4/9/2013 0.33
4/10/2013 0.25
4/11/2013 T
4/12/2013 0.01
4/13/2013 0.00
4/14/2013 0.22
4/15/2013 0.14
4/16/2013 0.91
4/17/2013 0.05
4/18/2013 0.33
4/19/2013 0.00
4/20/2013 0.00
4/21/2013 0.00
4/22/2013 0.00
4/23/2013 0.97
4/24/2013 0.06
4/25/2013 0.00
4/26/2013 0.00
4/27/2013 0.00
4/28/2013 0.00
4/29/2013 0.00
4/30/2013 0.00
5/1/2013 0.70
5/2/2013 0.60
5/3/2013 0.00
5/4/2013 0.00
5/5/2013 0.00
5/6/2013 T
5/7/2013 0.00
5/8/2013 0.04
5/9/2013 0.61
5/10/2013 0.14
5/11/2013 0.03
5/12/2013 0.01
5/13/2013 0.00
5/14/2013 0.00
5/15/2013 T
5/16/2013 T
5/17/2013 T
5/18/2013 0.00
5/19/2013 0.00
5/20/2013 0.08
5/21/2013 0.10
5/22/2013 0.00
5/23/2013 0.05
5/24/2013 0.00
5/25/2013 0.00
5/26/2013 0.00
5/27/2013 0.00
5/28/2013 0.00
5/29/2013 0.01
5/30/2013 0.26
5/31/2013 0.00
6/1/2013 0.00
6/2/2013 0.00
6/3/2013 T
6/4/2013 0.00
6/5/2013 0.15
6/6/2013 0.02
6/7/2013 0.00
6/8/2013 T
6/9/2013 T
6/10/2013 0.00
6/11/2013 0.00
6/12/2013 0.00
6/13/2013 0.00
6/14/2013 0.03
6/15/2013 0.00
6/16/2013 0.00
6/17/2013 0.00
6/18/2013 T
6/19/2013 0.02
6/20/2013 0.00
6/21/2013 0.00
6/22/2013 0.00
6/23/2013 0.02
6/24/2013 T
6/25/2013 0.00
6/26/2013 0.00
6/27/2013 0.00
6/28/2013 0.00
6/29/2013 0.75
6/30/2013 T
Day of YearDaily PrcpMultiday Prcp
7/1/2013 0.02
7/2/2013 0.00
7/3/2013 0.00
7/4/2013 0.00
7/5/2013 0.02
7/6/2013 0.01
7/7/2013 0.01
7/8/2013 0.00
7/9/2013 0.00
7/10/2013 0.00
7/11/2013 0.00
7/12/2013 0.02
7/13/2013 0.11
7/14/2013 0.06
7/15/2013 0.12
7/16/2013 0.01
7/17/2013 0.00
7/18/2013 0.00
7/19/2013 T
7/20/2013 0.00
7/21/2013 0.00
7/22/2013 0.00
7/23/2013 0.00
7/24/2013 0.00
7/25/2013 T
7/26/2013 0.30
7/27/2013 0.01
7/28/2013 0.15
7/29/2013 0.02
7/30/2013 0.03
7/31/2013 0.04
8/1/2013 0.00
8/2/2013 0.08
8/3/2013 0.00
8/4/2013 0.12
8/5/2013 T
8/6/2013 0.03
8/7/2013 0.07
8/8/2013 0.00
8/9/2013 T
8/10/2013 T
8/11/2013 0.20
8/12/2013 0.00
8/13/2013 0.14
8/14/2013 0.01
8/15/2013 T
8/16/2013 0.02
8/17/2013 0.00
8/18/2013 0.00
8/19/2013 T
8/20/2013 0.00
8/21/2013 0.00
8/22/2013 0.25
8/23/2013 0.02
8/24/2013 0.08
8/25/2013 0.14
8/26/2013 T
8/27/2013 0.10
8/28/2013 0.00
8/29/2013 0.00
8/30/2013 T
8/31/2013 T
9/1/2013 0.19
9/2/2013 0.00
9/3/2013 0.00
9/4/2013 0.00
9/5/2013 0.00
9/6/2013 0.00
9/7/2013 0.00
9/8/2013 0.00
9/9/2013 0.00
9/10/2013 1.27
9/11/2013 1.28
9/12/2013 7.73
9/13/2013 5.30
9/14/2013 0.12
9/15/2013 0.20
9/16/2013 2.04
9/17/2013 0.02
9/18/2013 0.00
9/19/2013 0.07
9/20/2013 0.00
9/21/2013 0.00
9/22/2013 0.00
9/23/2013 0.46
9/24/2013 0.00
9/25/2013 0.00
9/26/2013 0.00
9/27/2013 0.04
9/28/2013 0.46
9/29/2013 0.00
9/30/2013 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2012 7:00 AM 0.01 0.0 M 0.0 M RW-- around 1830 MDT 30 Sep 2012. Trace precip. RW-, most likely between 0400 and 0500 MDT 01 Oct 2012. Precip .01".
10/2/2012 7:00 AM T 0.0 M 0.0 M A few drops of rain between 0700 and 0800 MDT 01 Oct 2012. Trace precip.
10/3/2012 7:00 AM 0.00 0.0 M 0.0 M
10/4/2012 7:00 AM 0.00 0.0 M 0.0 M
10/5/2012 7:00 AM 0.01 0.1 M 0.1 M First measurable snow of the season fell between 0400 and 0645 MDT 05 Oct 2012. This coincided with the first freezing temperature of the season (32 deg F). Precip 0.01". Snow accumulation 0.1".
10/6/2012 7:00 AM 0.10 0.0 M 0.0 M Drizzle began ~1900 MDT 05 Oct 2012, continued intermittently all night. Freezing drizzle prior to daybreak on 06 Oct. Precip 0.10". Precip continues at observation time.
10/7/2012 7:00 AM 0.04 0.0 M 0.0 M Precip continued intermittently from 0700 MDT to mid-afternoon on 06 Oct 2012, mostly in the form of tiny snow grains, sometimes mixed with drizzle. No accumulation. Precip 0.04". First hard freeze of the season at observation time. Min temperature 26 deg F.
10/8/2012 7:00 AM 0.00 0.0 M 0.0 M
10/9/2012 7:00 AM 0.00 0.0 M 0.0 M
10/10/2012 7:00 AM 0.00 0.0 M 0.0 M
10/11/2012 7:00 AM 0.00 0.0 M 0.0 M
10/12/2012 7:00 AM 0.00 0.0 M 0.0 M
10/13/2012 7:00 AM 0.03 0.0 M 0.0 M RW- 1325-1335 MDT 12 Oct 2012. TRW- 1655-1710 MDT. Two peals of thunder. Precip from these two events 0.01". R- 2200-2220 MDT 12 Oct. Precip +.02, for a 24-h total of 0.03".
10/14/2012 7:00 AM 0.07 0.0 M 0.0 M Occasional light sprinkles 1000-1300 MDT 13 Oct 2012. Trace precip. R- 1300-1420 MDT. Precip .07".
10/15/2012 7:00 AM 0.00 0.0 M 0.0 M
10/16/2012 7:00 AM 0.00 0.0 M 0.0 M
10/17/2012 7:00 AM T 0.0 M 0.0 M RW-- 2100-2215 MDT 16 Oct 2012, the result of "blow-over" from the Continental Divide and stiff west winds. Trace precip.
10/18/2012 7:00 AM 0.00 0.0 M 0.0 M
10/19/2012 7:00 AM 0.00 0.0 M 0.0 M
10/20/2012 7:00 AM 0.00 0.0 M 0.0 M
10/21/2012 7:00 AM 0.00 0.0 M 0.0 M
10/22/2012 7:00 AM 0.00 0.0 M 0.0 M
10/23/2012 7:00 AM 0.00 0.0 M 0.0 M
10/24/2012 7:00 AM 0.00 0.0 M 0.0 M
10/25/2012 7:00 AM 0.82 5.1 M 5.0 M R- began 1552 MDT 24 Oct 2012. Changeover to snow began 1900 MDT and was complete by 2000 MDT. About 0.5" accumulation by 2030 MDT, and 2.0" by 2200 MDT, with S- continuing. Accumulation probably stopped by 2400 MDT. My best estimate is that snow fell very lightly off and on from 0000 to 0600 MDT on 25 Oct. At 0700 MDT, 5.1" on the ground (max measured). Precip up to 1900 MDT on 24 Oct (when changeover to snow began) was 0.24". After that, the melted equivalent was .58", for a 24-h total of 0.82".
10/26/2012 7:00 AM 0.25 2.8 M 6.0 M SW- 1645-1815 MDT 25 Oct 2012. S- resumed at 1920 MDT, continued probably past 2400 MDT. At 0700 MDT 26 Oct, 6.0" on the ground, 2.8" new accumulation, precip 0.25".
10/27/2012 7:00 AM 0.00 0.0 M 4.0 M
10/28/2012 7:00 AM 0.00 0.0 M 2.0 M Two inches of crusty snow remains in open areas.
10/29/2012 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas. Snow cover in open areas disappeared on the afternoon of 28 Oct 2012.
10/30/2012 7:00 AM 0.00 0.0 M 0.0 M
10/31/2012 7:00 AM 0.00 0.0 M 0.0 M
11/1/2012 7:00 AM 0.00 0.0 M 0.0 M
11/2/2012 7:00 AM 0.00 0.0 M 0.0 M
11/3/2012 7:00 AM 0.00 0.0 M 0.0 M
11/4/2012 7:00 AM 0.00 0.0 M 0.0 M
11/5/2012 7:00 AM 0.00 0.0 M 0.0 M
11/6/2012 7:00 AM 0.00 0.0 M 0.0 M
11/7/2012 7:00 AM 0.00 0.0 M 0.0 M
11/8/2012 7:00 AM 0.00 0.0 M 0.0 M
11/9/2012 7:00 AM 0.00 0.0 M 0.0 M
11/10/2012 7:00 AM T 0.0 M 0.0 M A few sprinkles between 0630 and 0700 MST, 10 Nov 2012. Trace precip.
11/11/2012 7:00 AM 0.26 0.3 M 0.3 M Occasional RW-- 0700 to 0945 MST 10 Nov 2012, then RW-. A few flakes of snow briefly mixed in ~1010 MST. Wet pavement by 1015 MST. By 1200 MST, precip mostly solid, but crystal type obliterated by melting and refreezing. Precip 0.01" up until changeover from liquid to solid precip at noon. S- 1200-1300 MST with 0.1" accumulation of slush by 1300 MST. S- punctuated by SPW- during the afternoon. Snow partially melted on grass as it fell. Occasional freezing drizzle late afternoon and evening along with S- or S--. Precip ended ~2200 MST, with 0.25" melted equivalent since noon. Max accumulation 0.3". 24-hour precip 0.26".
11/12/2012 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas.
11/13/2012 7:00 AM 0.00 0.0 M T M Less than 0.5" snow remains in shaded areas.
11/14/2012 7:00 AM 0.00 0.0 M T M Just a little snow remains in well shaded areas.
11/15/2012 7:00 AM 0.00 0.0 M 0.0 M
11/16/2012 7:00 AM T 0.0 M 0.0 M A few snow flakes in the air 0815-0845 MST 15 Nov 2012. Trace precip.
11/17/2012 7:00 AM 0.00 0.0 M 0.0 M
11/18/2012 7:00 AM 0.00 0.0 M 0.0 M
11/19/2012 7:00 AM 0.00 0.0 M 0.0 M
11/20/2012 7:00 AM 0.00 0.0 M 0.0 M
11/21/2012 7:00 AM 0.00 0.0 M 0.0 M
11/22/2012 7:00 AM 0.00 0.0 M 0.0 M
11/23/2012 7:00 AM 0.00 0.0 M 0.0 M
11/24/2012 7:00 AM 0.00 0.0 M 0.0 M
11/25/2012 7:00 AM 0.00 0.0 M 0.0 M
11/26/2012 7:00 AM 0.00 0.0 M 0.0 M
11/27/2012 7:00 AM T 0.0 M 0.0 M Freezing drizzle, mostly very light, from 0800 to 1200 MST 26 Nov 2012. A few tiny snow grains were mixed in during the first hour. Pavement stayed damp most of the morning.
11/28/2012 7:00 AM 0.00 0.0 M 0.0 M
11/29/2012 7:00 AM 0.00 0.0 M 0.0 M
11/30/2012 7:00 AM 0.00 0.0 M 0.0 M
12/1/2012 7:00 AM 0.00 0.0 M 0.0 M
12/2/2012 7:00 AM 0.00 0.0 M 0.0 M
12/3/2012 7:00 AM 0.00 0.0 M 0.0 M
12/4/2012 7:00 AM 0.00 0.0 M 0.0 M
12/5/2012 7:00 AM 0.00 0.0 M 0.0 M
12/6/2012 7:00 AM 0.00 0.0 M 0.0 M
12/7/2012 7:00 AM T 0.0 M 0.0 M Occasional light sprinkles of small drops, only enough to dampen the pavement slightly, between 0830 and 1000 MST, 06 Dec 2012. Trace precip.
12/8/2012 7:00 AM 0.00 0.0 M 0.0 M
12/9/2012 7:00 AM 0.00 0.0 M 0.0 M
12/10/2012 7:00 AM 0.00 0.0 M 0.0 M
12/11/2012 7:00 AM 0.04 0.5 M 0.5 M SW- between 0000 and 0200 MST 11 Nov 2012. 0.5" accumulated. Precip 0.04".
12/12/2012 7:00 AM 0.00 0.0 M T M Dusting of snow remains in shaded areas.
12/13/2012 7:00 AM 0.00 0.0 M 0.0 M
12/14/2012 7:00 AM 0.00 0.0 M 0.0 M
12/15/2012 7:00 AM 0.00 0.0 M 0.0 M
12/16/2012 7:00 AM 0.00 0.0 M 0.0 M
12/17/2012 7:00 AM 0.00 0.0 M 0.0 M
12/18/2012 7:00 AM 0.00 0.0 M 0.0 M
12/19/2012 7:00 AM 0.07 1.6 M 1.6 M SW-- 1645-1715 MST 18 Dec 2012, enough to dampen the pavement and put a trace of snow on the ground, but no accumulation. S-1 began 0500 MST 19 Dec, continuing at obs time (0700 MST). 1.6" of snow on ground with water content of 0.07".
12/20/2012 7:00 AM 0.04 1.7 M 2.5 M Light snow was falling at the beginning of the observation period. S-3/4 0730-0845 MST 19 Dec 2012, aggregates of dendrite crystals, then smaller crystals and diminishing snowfall after 0845 MST. Measurable snowfall ended 0930 MST 19 Dec. Max accumulation 3.3" measured at 1030 MST. Precip since 0700 MST .04". At 0700 MST 20 Dec 2012, 2.5" remains on ground.
12/21/2012 7:00 AM 0.00 0.0 M 0.5 M At observation time, about 0.5" snow remains with 60% coverage in open areas.
12/22/2012 7:00 AM 0.00 0.0 M T M Snow remains in shady areas.
12/23/2012 7:00 AM 0.00 0.0 M T M Patchy snow remains in well shaded areas.
12/24/2012 7:00 AM 0.00 0.0 M 0.0 M
12/25/2012 7:00 AM 0.28 6.6 M 6.6 M S-- began 1730 MST 24 Dec 2012. Dusting by 1900 MST, at which time accumulating snow began. S- most of the night, still falling at 0430 MST 25 Dec, but soon became very light. At obs time, 0700 MST 25 Dec, ice needles, 6.6" of new snow on the ground with a water content of 0.28".
12/26/2012 7:00 AM T T M 5.0 M Very light snow ended ~0800 MST 25 Dec 2012. Trace since 0700 MST.
12/27/2012 7:00 AM 0.00 0.0 M 4.0 M
12/28/2012 7:00 AM T T M 3.5 M SW-- during the evening of 27 Dec 2012, then clearing. Trace precip, trace new snow.
12/29/2012 7:00 AM 0.00 0.0 M 3.0 M
12/30/2012 7:00 AM 0.00 0.0 M 2.5 M
12/31/2012 7:00 AM 0.00 0.0 M 2.5 M
1/1/2013 7:00 AM T T M 2.5 M S-- 1120 to 1230 MST. Trace precip. Trace accumulation.
1/2/2013 7:00 AM 0.00 0.0 M 2.5 M
1/3/2013 7:00 AM 0.00 0.0 M 2.5 M
1/4/2013 7:00 AM 0.00 0.0 M 2.5 M
1/5/2013 7:00 AM 0.00 0.0 M 1.5 M Bare ground is appearing around trees. In open areas, ground still 80% covered with 1.5" of snow.
1/6/2013 7:00 AM 0.00 0.0 M 1.0 M About 70% of ground still covered with 1.0" of snow in open areas.
1/7/2013 7:00 AM 0.00 0.0 M 1.0 M Snow coverage is down to 50% in open areas. Only 1.0" patchy snow remains.
1/8/2013 7:00 AM 0.00 0.0 M T M About 70% of the ground was bare of snow in open areas by mid afternoon on 07 Jan 2013, so this morning's snow depth is officially recorded as a trace, following just short of two weeks of continuous snow cover.
1/9/2013 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas. Open areas almost completely melted out.
1/10/2013 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas.
1/11/2013 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas.
1/12/2013 7:00 AM T 0.1 M 0.1 M A few flakes of snow in the air during the afternoon, 11 Jan 2013 as much colder air moved in from N at low levels. Trace precip. No accumulation. Very light intermittent snow began 0430 MST 12 Jan. 0.1" accumulation on deck rails by 0700 MST but only about .005" melted, so officially recorded as a trace precip. About an inch of snow remains in shaded areas.
1/13/2013 7:00 AM T 0.0 M T M Occasional very light snow showers during the afternoon, 12 Jan 2013. No new accumulation. Trace precip. A trace of snow covers the ground at obs time, with about an inch remaining in shaded areas.
1/14/2013 7:00 AM 0.02 0.3 M 0.3 M Ice crystals sparkled in sunlight (diamond dust) 0800-1000 MST 13 Jan 2012. S- with tiny crystals began falling 1430 MST and continued until 2100 MST. New accumulation 0.3". Precip .02". Ice crystals in the air through the rest of the night but no additional accumulation.
1/15/2013 7:00 AM T 0.0 M T M Ice crystals in the air 0700-0800 MST 14 Jan 2013. Trace precip, no accumulation. At least a trace of snow remains on ground everywhere; about 1" of snow in shaded areas.
1/16/2013 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas.
1/17/2013 7:00 AM 0.00 0.0 M T M Snow remains only in shaded areas.
1/18/2013 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas.
1/19/2013 7:00 AM 0.00 0.0 M T M Snow remains in well shaded areas
1/20/2013 7:00 AM 0.00 0.0 M T M Patchy snow remains in well shaded areas.
1/21/2013 7:00 AM 0.00 0.0 M T M Patchy snow remains in well shaded areas.
1/22/2013 7:00 AM 0.00 0.0 M T M Patchy snow remains in well-shaded areas.
1/23/2013 7:00 AM 0.00 0.0 M M T Patchy snow remains in well shaded areas.
1/24/2013 7:00 AM 0.00 0.0 M 0.0 M Last of the snow melted yesterday
1/25/2013 7:00 AM 0.00 0.0 M 0.0 M
1/26/2013 7:00 AM 0.00 0.0 M 0.0 M
1/27/2013 7:00 AM 0.01 0.0 M 0.0 M R- or R-- 1830-2030 MST 26 Jan 2013. Precip 01".
1/28/2013 7:00 AM 0.00 0.0 M 0.0 M
1/29/2013 7:00 AM 0.22 4.1 M 4.1 M Precip began with a few minutes of rain and temperature around 40 deg F at 1455 MST 28 Jan 2013. Rain very quickly changed to snow and became heavy (SW+1/4) 1515-1530 MST. Snow slowly tapered off and ended by 1615L. Accumulation 0.6". Precip .08". SW- 1900-2000 MST. More substantial snow after 0000 MST 29 Jan 2013, most likely between 0200 and 0500 MST. At 0700 MST 29 Jan, 4.1" total accumulation, with 3.5" new snow since 1615 MST 28 Jan and precip +.14 since 1615 MST 28 Jan.
1/30/2013 7:00 AM 0.00 0.0 M 2.0 M
1/31/2013 7:00 AM 0.00 0.0 M 1.0 M About 1.0" of crusty snow remains.
2/1/2013 7:00 AM 0.00 0.0 M T M Snow remains in shaded areas.
2/2/2013 7:00 AM 0.00 0.0 M T M Snow remains in shady areas.
2/3/2013 7:00 AM 0.00 0.0 M 0.0 M
2/4/2013 7:00 AM 0.00 0.0 M 0.0 M
2/5/2013 7:00 AM 0.00 0.0 M 0.0 M
2/6/2013 7:00 AM 0.00 0.0 M 0.0 M
2/7/2013 7:00 AM 0.01 M M M M RW-/RW-- 1745-1915 MST 06 Feb 2013. Precip .01".
2/8/2013 7:00 AM 0.00 0.0 M 0.0 M
2/9/2013 7:00 AM 0.00 0.0 M 0.0 M
2/10/2013 7:00 AM 0.01 0.1 M 0.1 M SW-- 1400-1500 MST 09 Feb 2013. Trace precip. Trace accumulation. S-/S-- 1900-2100 MST and perhaps later during the night. At obs time (0700 MST 10 Feb), 0.1" accumulation. Precip 0.01".
2/11/2013 7:00 AM T T M T M Very light snow began ~0400 MST 11 Feb 2013. A few flakes still in the air at 0700 MST. Trace precip, trace accumulation.
2/12/2013 7:00 AM 0.01 T M 0.0 M SW- 1245-1400 MST. Trace accumulation. .01" precip.
2/13/2013 7:00 AM 0.00 0.0 M 0.0 M
2/14/2013 7:00 AM 0.00 0.0 M 0.0 M
2/15/2013 7:00 AM 0.14 3.4 M 2.5 M Frontal passage ~1030 MST 14 Feb 2013 was followed quickly by snow, beginning at 1100 MST. Light, occasionally moderate snow for the rest of the day, ending at 2000 MST. Max accumulation 3.4" on grass, settling to 2.5" by observation time (0700 MST 15 Feb). Precip 0.14".
2/16/2013 7:00 AM 0.00 0.0 M T M Continuous snow cover (< 50%) disappeared late afternoon on 15 Feb 2013. At obs time, snow remains in shaded areas.
2/17/2013 7:00 AM 0.00 0.0 M T M Patchy snow remains in well-shaded areas.
2/18/2013 7:00 AM 0.00 0.0 M 0.0 M
2/19/2013 7:00 AM 0.00 0.0 M 0.0 M
2/20/2013 7:00 AM 0.00 0.0 M 0.0 M
2/21/2013 7:30 AM 0.43 4.9 M 4.9 M S- began 1600 MST 20 Feb 2013. S1/2 1800-1930 MST, tapering off to S-- by 2100 MST. S-- or S- the remainder of the night. S-3/4 at obs time, 0730 MST 21 Feb. 4.9" on the ground, all new, with a water content of 0.43".
2/22/2013 7:00 AM 0.05 0.5 M 4.0 M S- at start of observing period (0730 MST 21 Feb 2013) tapered off and ended by 1020 MST. New accumulation 0.3", water content 0.03". Partly sunny midday but stratocumulus overcast formed by 1400 MST. S- or S--, tiny crystals, fell from this overcast after 1600L, ending at 1900 MST. Additional accumulation 0.2", with a water content of 0.02".
2/23/2013 7:00 AM 0.00 0.0 M 2.5 M
2/24/2013 6:50 AM 0.10 1.9 M 4.3 M Light or very light snow began ~0100 MST 24 Feb 2013. Just a dusting on the ground at 0330 MST. At 0450 MST S- with 0.8" new accumulation. At 0650 MST, S-3/4, 1.9" since 0100 MST, total on ground 4.3", precip 0.10".
2/25/2013 7:00 AM 0.32 5.0 M 8.5 M S- at start of observing period, becoming S1/2 at 0830 MST 24 Feb 2013. Brief SW+1/4 1010-1020 MST, then S1/2 until 1200 MST. S- after noon, becoming very light by mid-afternoon. At 1630 MST, S--, maximum total depth of 9.0", of which 4.7" fell after 0650 MST 24 Feb. Precip since 0650 MST .30". S- 1730-2000 MST brought +.02 precip and 0.3" more accumulation. 8.5" total depth remained at obs time.
2/26/2013 7:00 AM T T M 6.0 M Very light snow began between 0630 and 0700 MST 26 Feb 2013, brought a light dusting. Precip trace, snow accumulation trace.
2/27/2013 7:00 AM 0.07 0.7 M 6.0 M Very light snow in progress at start of observing period. S- 0830-1030 MST 26 Feb 2013, then S-- again. Sun dimly visible, brightening with time. No snow midday. S- resumed at 1430 MST, ending by 1515 MST. Precip 0.07". New snow accumulation difficult to measure in that it melted on deck rails, snow boards, sidewalks, and just about every other surface except existing snow cover. Estimated new accumulation 0.7".
2/28/2013 7:00 AM 0.00 0.0 M 5.0 M
3/1/2013 7:00 AM 0.00 0.0 M 4.5 M
3/2/2013 7:00 AM 0.00 0.0 M 4.0 M
3/3/2013 7:00 AM 0.00 0.0 M 2.0 M
3/4/2013 7:00 AM 0.00 0.0 M T M Snow remains only in well shaded areas. Chinook wind on the afternoon and evening of 03 Mar 2013 quickly melted all snow in open areas.
3/5/2013 7:00 AM 0.13 2.6 M 2.0 M A few heavily rimed pellets began falling at 1145 MST 04 Mar 2013. Measurable snow began at 1200, continued until ~ 1530 MST. Snow briefly heavy at times, especially at 1500 MST, but mostly light or moderate. At 1615 MST, 2.6" accumulation on grass with a water content of 0.13".
3/6/2013 7:00 AM 0.00 0.0 M T M Snow cover gone by late afternoon on 05 Mar 2013 except in shady areas.
3/7/2013 7:00 AM 0.00 0.0 M T M Snow remains in well shaded areas.
3/8/2013 7:00 AM 0.00 0.0 M 0.0 M All traces of snow gone by late afternoon 07 Mar 2013 as maximum temperature reached 64 deg F.
3/9/2013 7:00 AM 0.09 0.5 M 0.5 M S- began at 0515 MST 09 Mar 2013, continues at obs time. 0.5" accumulation so far with a water content of 0.09". At obs time, S-3/4, falling straight down. Temperature 32 deg F.
3/10/2013 7:00 AM 0.28 3.6 M 3.5 M S- from 0700-0845 MST 09 Mar 2013, then S1/2 0845-0930 MST, then S-3/4 to 1 1/2 from 0930-1530 MST, except briefly SW1/2 for a few minutes at a time in showers. Temperature was between freezing and a few degrees above all day, limiting accumulation. At 1545 MST, S--2, 34 deg, total on ground 4.1", accumulation 3.6" and precip .27" since 0700 MST. +.01 precip fell from 1545 MST until ending at 1630 MST. No additional accumulation during this period.
3/11/2013 7:00 AM 0.00 0.0 M 1.0 M
3/12/2013 7:00 AM 0.34 4.3 M 4.3 M Gusty west wind and a maximum temperature of 57 deg got rid of continuous snow cover by early afternoon 11 Mar 2013. Then came a surprise snowfall, not predicted even an hour or two before it started. Strong frontal passage from ENE at 1700 MDT 11 Mar 2013. First flakes of snow fell 1830 MDT, estimated 0.5" by 2100 MDT, 1.0 by 2200 MDT, and 2.0 by 2300 MDT, when snow temporarily ended. Snow resumed very early 12 Mar and continued with embedded showers thru obs time. At 0700 MDT 12 Mar 2013, S-, 1.5 miles visibility, 27 deg, 4.3" on the ground with a water content of .34.
3/13/2013 7:00 AM 0.02 0.2 M 3.0 M Light snow was falling at start of observation period, 0700 MDT 12 Mar 2013. Snow ended at 0830 MDT, with 0.2" new accumulation and a water content of .02". Stratus overcast broke ~ 1400 MDT and sun came out, but temperature did not exceed 39 deg.
3/14/2013 7:00 AM 0.00 0.0 M T M Heavy frost early on 13 Mar 2013, but much warmer in the afternoon with max temperature of 64 deg, which melted all the snow except in well shaded areas.
3/15/2013 7:00 AM 0.00 0.0 M 0.0 M
3/16/2013 7:00 AM 0.00 0.0 M 0.0 M
3/17/2013 7:00 AM T 0.0 M 0.0 M A few drops of rain (RW--) around 1645 MDT 16 Mar 2013. Trace precip.
3/18/2013 7:00 AM T 0.0 M 0.0 M RW--, blown off foothills from west to east, around 0920 MDT 17 Mar 2013. Trace precip.
3/19/2013 7:00 AM 0.00 0.0 M 0.0 M
3/20/2013 7:00 AM 0.00 0.0 M 0.0 M
3/21/2013 7:00 AM 0.00 0.0 M 0.0 M
3/22/2013 7:00 AM 0.01 0.0 M 0.0 M Brief RW- 1415-1430 MDT 21 Mar 2013. Precip 0.01"
3/23/2013 7:00 AM 0.59 7.4 M 7.4 M Light snow began 1630 MDT 22 Mar 2013. Grass whitened by 1730 MDT. Accumulation 0.5" by 1900 MDT, 0.7" by 2030 MDT. At 2145 MDT 1.5" on ground with moderate snow, S 5/8. At 0045 MDT 23 Mar, S-3/4, small crystals, 5.1" accumulation with a water content of 0.30". Mostly light snow from 0045 to 0700 MDT 23 Mar. At 0700 MDT, S-3/4, 22 deg F (minimum so far), 7.4" accumulation. Water content since 0045 MDT +0.29.
3/24/2013 7:00 AM 0.26 1.7 M 8.0 M S- at start of observing period (0700 MDT 23 Mar 2013) with 7.4" on the ground. Mostly light, occasionally moderate snow during the morning of 23 Mar. SW+1/4 1200-1230 MDT, then snow slowly tapering off. Accumulating snow ended by 1400 MDT, all snowfall ended by 1700 MDT. Max accumulation on the ground 9.1" at 1400 MDT, of which 1.7" fell since 0700 MDT. Precip from 0700-2150 MDT was 0.24" An additional 0.02" fell as light snow after that. A few flakes in the air the evening of 23 March (trace precip, no accumulation). Minimum temperature at dawn 24 Mar was 3 deg F, one higher than the daily record.
3/25/2013 7:00 AM T 0.0 M 7.0 M A few flakes in the air ~0900 MDT 24 Mar 2013. Trace pcpn.
3/26/2013 7:00 AM 0.00 0.0 M 4.5 M The 4.5-inch snow cover has a stiff upper crust about an inch thick.
3/27/2013 7:00 AM 0.00 0.0 M 2.5 M Snow cover is stiff and crusty.
3/28/2013 7:00 AM 0.00 0.0 M T M March sun made quick work of the remaining snow cover on 17 Mar 2013. Continuous snow cover gone by mid afternoon. This morning, snow remains only in shaded areas.
3/29/2013 7:00 AM T 0.0 M 0.0 M A few drops of rain ~1910 MDT 28 Mar 2013. Fairly large drops from towering cumulus. Trace precip.
3/30/2013 7:00 AM 0.00 0.0 M 0.0 M
3/31/2013 7:00 AM 0.00 0.0 M 0.0 M
4/1/2013 7:00 AM 0.00 0.0 M 0.0 M
4/2/2013 7:00 AM 0.04 0.0 M 0.0 M RW-- began ~1715 MDT 01 Apr 2013. Occasional RW-- thru 2205 MDT (trace precip). RW- 2205-2215 MDT. Precip .04".
4/3/2013 7:00 AM 0.52 T M 0.0 M R- began 1100 MDT 02 Apr 2013, became mixed with snow by 1300 MDT, changed to all snow by 1530 MDT, then back to all rain by 1645 MDT. Only a trace of accumulation on the grass. Most rain ended by 2230 MDT, but a light shower probably fell ~0100 MDT 03 April. Cumulative precip: .20" by 1615 MDT, .38" by 2130 MDT, and .52" storm total.
4/4/2013 7:00 AM 0.00 0.0 M 0.0 M
4/5/2013 7:00 AM 0.00 0.0 M 0.0 M
4/6/2013 7:00 AM 0.00 0.0 M 0.0 M
4/7/2013 7:00 AM 0.00 0.0 M 0.0 M
4/8/2013 7:00 AM 0.00 0.0 M 0.0 M
4/9/2013 7:00 AM 0.33 4.0 M 4.0 M R- began 1900 MDT 08 Apr 2013, changed to snow within less than one hour and continued, light or moderate, through observation time. Precip so far 0.33". Accumulation 4.0"
4/10/2013 7:00 AM 0.25 5.0 M 8.0 M Snow continued, light or moderate (visibility was as low as 3/8 mile at times), all day 09 Apr 2013. Max accumulation measured ~1845 MDT: 9.0". S- continued until late at night, then a gentle fall of individual crystals through the early morning hours of 10 April. Precip 0.25", continuous for the full 24 hours, new accumulation 5.0", total on ground at obs time 8.0".
4/11/2013 7:00 AM T 0.0 M 2.5 M Min temperature of 5 deg F observed ~ 0630 MDT 10 Apr 2013. Diamond dust 0700-0800 MDT 10 Apr 2013 (trace precip), then SW--, just a few flakes, mid-afternoon (trace precip). Snow melted quickly under high April sun, though air temperature failed to reach freezing. Only 2.5" of crusty snow left at obs time.
4/12/2013 7:00 AM 0.01 0.0 M 0.0 M All snow melted during the day, even in well shaded areas. Brief RW- 1645 MDT 11 Apr 2013. Precip 0.01".
4/13/2013 7:00 AM 0.00 0.0 M 0.0 M
4/14/2013 7:00 AM 0.22 0.0 M 0.0 M RW- 2330 MDT 13 Apr to 0030 MDT 14 Apr 2013. Precip 0.22"
4/15/2013 7:10 AM 0.14 1.6 M 1.6 M S- began 0430 MDT 15 Apr 2013, slowly became heavier. At 0710 MDT (obs time), moderate snow, visibility 1/2 mile, 1.6" on the ground with a water content of 0.14".
4/16/2013 7:00 AM 0.91 11.5 M 13.0 M S1/2 at start of observing period, 0710 MDT 15 Apr 2013. Brief SW+1/4 at 0745 MDT, then S1/2 til 0830L, then S-. At 0930 S-, visibility 1.5 miles, accumulation 4.0, incremental precip +.12". About 0945 MDT, long, narrow band of intense snowfall oriented WSW-ENE drifted S over Boulder. S+1/4, briefly S+1/8 ~ 1100 MDT. S+ lasted until 1215 MDT. Snowfall rate > 2"/hour during this time. Lighter snowfall after 1215 MDT. At 1400 MDT, accumulation 10.1, incremental precip 0.39". Light or moderate snow during the afternoon and evening. At 1900 MDT, S-5/8, accumulation 11.0", incremental precip 0.17". Snow ended after midnight, best guess 0100 MDT 16 April. At obs time, an average of 13.1" total accumulation (max measured), incremental precip 0.23". 24-h total precip 0.91, snowfall 11.5".
4/17/2013 7:00 AM 0.05 T M 8.0 M A few snow grains in the air (SG--) 0730-0930 MDT 16 Apr 2013. Trace precip. More SG-- by 1900 MDT, becoming mixed with freezing drizzle (ZL-) by 2000 MDT. Measurable precip, mostly ZL-, enough to keep pavement wet, continued all night. Slight ZL-- continues now. Precip 0.05".
4/18/2013 7:00 AM 0.33 5.0 M 12.0 M S- began 0720 MDT, 17 Apr 2013. S- continued until 1000 MDT, when Boulder came under a snow band. Snow increased to S1/2, then back to S-3/4 by 1030 MDT. S- still falling at 1730 MDT, with 11.7" on the ground, 4.3" new today with water content of .28". Snow became very light by late evening. At 2155 MDT, 12.2" on the ground (max measured), +.03 pcpn since 1730 MDT. Snow ended very early on 18 Apr 2013, with +.02 precip and +0.2 more accumulation for a total of 5.0" inches new today. 24-h precip 0.33". 12.0" on the ground at obs time. Min temperature of 10 deg F between 0600 and 0630 MDT 18 April set a record for the data and so late in the season.
4/19/2013 7:00 AM 0.00 0.0 M 6.0 M
4/20/2013 7:00 AM 0.00 0.0 M 1.5 M 1.5" of snow left with 60% coverage.
4/21/2013 7:00 AM 0.00 0.0 M T M Snow remains only in well shaded areas.
4/22/2013 7:00 AM 0.00 0.0 M 0.0 M
4/23/2013 7:00 AM 0.97 9.6 M 9.6 M RW- began at 0955 MDT 22 April 2013, became mixed with small graupel at 1000 MDT and changed to mostly solid precip (SW-SPW-) by 1005 MDT 22 April 2013. By 1030 MDT S1/2, with occasional S+ 1/4 until 1130 MDT. S- 1130-1425 MDT, then S 1/2 1425-1450 MDT. S-1 1450-1700 MDT. Snow increased to S- 3/4 at 1700 MDT. At 1800 MDT, 4.8" on the ground with a water equivalent of .34". S 1/2 1900-2130 MDT, then S- all night. At 2155 MDT, S-1, 7.6" accumulation, precip +.26. S- continued all night. At 0700 MDT, 23 April, 9.6" accumulation, precip since 2155 MDT last evening +.37, for a 24-h total of 0.97". Light snow still falling at obs time.
4/24/2013 7:00 AM 0.06 0.6 M 5.5 M Light snow in progress at start of observing period tapered off and ended by 1030 MDT 23 April 2013. New accumulation 0.6", precip .06". Max total accumulation 10.2" around 1000 MDT. Chilly during the day but considerable snow melt anyway. Only 5.5" left at obs time.
4/25/2013 7:00 AM 0.00 0.0 M 1.0 M 1.0" of patchy snow remains with barely 50% coverage.
4/26/2013 7:00 AM 0.00 0.0 M T M Only a trace of snow remains in well shaded areas.
4/27/2013 7:00 AM 0.00 0.0 M 0.0 M
4/28/2013 7:00 AM 0.00 0.0 M 0.0 M
4/29/2013 7:00 AM 0.00 0.0 M 0.0 M
4/30/2013 7:00 AM 0.00 0.0 M 0.0 M
5/1/2013 7:00 AM 0.70 4.3 M 4.3 M First drops of rain fell at 1920 MDT 30 Apr 2013. Only a trace of precip until 2030 MDT, when steady R- began. At 2250 MDT, light rain and snow mixture, precip 0.20", no accumulation. This continued thru midnight, by which time a trace of slush was on the grass, precip +.05. R-S- mixture had changed to all snow by 0400 MDT 01 May, but still only a trace of snow on grass and rooftops. Moderate, occasionally light snow 0400 to obs time at 0700 MDT 01 May. At obs time, 32 deg F, S-5/8, accumulation 4.3" on the grass, precip since midnight +.45 for a 24-h total of 0.70".
5/2/2013 7:00 AM 0.60 6.3 M 10.0 M Accumulating snow was falling at the start of the observing period, 0700 MDT 01 May 2013. Light to moderate snow all morning with the exception of S+1/4, 1130-1145 MDT. Light or moderate snow thru 1500 MDT. Snowfall too light to accumulate 1530-1800 MDT, but then S-3/4 from 1800 MDT thru 2100 MDT, slowly tapering off and ending after midnight. Following are measurement times / total accumulation / incremental precip: 1015 MDT / 7.0" / +.24"; 1400 MDT / 9.6" / +.16"; 1945 MDT / 10.2" / +.13"; 0200 MDT 02 May / 10.6" / +.07. 10.0" on the ground at 0700 MDT, 02 May. 17 deg F at 0600 MDT 02 May 2013 sets new record min for the month of May in Boulder (recorded at home and also officially for Boulder, where records have been kept since 1894).
5/3/2013 7:00 AM 0.00 0.0 M 3.0 M Min temperature 25 deg F at dawn, cold, but not a daily record for 03 May 2013. 3.0" snow on the ground at 0700 MDT.
5/4/2013 7:00 AM 0.00 0.0 M T M Warm sun melted snow in open areas by 1300 MDT on 03 May 2013. At obs time this morning, only patchy snow remains in well shaded areas.
5/5/2013 7:00 AM 0.00 0.0 M 0.0 M
5/6/2013 7:00 AM T 0.0 M 0.0 M A few drops of rain from brief, light shower ~1845 MDT 05 May 2013.
5/7/2013 7:00 AM 0.00 0.0 M 0.0 M
5/8/2013 7:00 AM 0.04 0.0 M 0.0 M RW-- 1410-1420 MDT 07 May 2013 (trace). Thunder 1545-1630 MDT (no rain). RW-- 1710-1720 MDT (trace). Two RW- 1800-1900 MDT, precip .02". Occasional RW- 1900-2215 MDT (precip +.02).
5/9/2013 7:00 AM 0.61 0.0 M 0.0 M RW- began 0820 MDT 08 May 2013, mixed with 1/8" hail for the first two minutes. Precip 0.10" by 0855 MDT. Occasional sprinkles through 1635 MDT (+.01"). R- began 1700 MDT, R by 1730 MDT, then R- 1815-1900L, then a lull (precip +.32"). R- began again ~2020 MDT, ending before 0030 MST 09 May. Precip +.18 for a 24-h total of 0.61".
5/10/2013 7:00 AM 0.14 0.0 M 0.0 M RW 0815-0830 MDT 09 May 2013, precip 0.06". RW- ~1000 MDT, precip +.02". RW- 1515-1545 MDT, precip +.06 for a 24-h total of 0.14".
5/11/2013 7:00 AM 0.03 0.0 M 0.0 M TRW- 1230 MDT and again ~1315 MDT. Precip from both .03".
5/12/2013 7:00 AM 0.01 0.0 M 0.0 M TRW-- 1420-1430 MDT 11 May 2013 (trace precip). TRW- ~1730 MDT (precip 0.01").
5/13/2013 7:00 AM 0.00 0.0 M 0.0 M
5/14/2013 7:00 AM 0.00 0.0 M 0.0 M
5/15/2013 7:00 AM T 0.0 M 0.0 M Sprinkles of small droplets and gusty outflow breezes 1150 to 1205 MDT 14 May 2013. No thunder.
5/16/2013 7:00 AM T 0.0 M 0.0 M Light sprinkles associated with thunderstorm outflows from the SE, 1700-1730 MDT, 15 May 2013. Trace precip. More sprinkles ~2100 MDT. Trace precip.
5/17/2013 7:00 AM T 0.0 M 0.0 M RW-- out of the back side of a weak Cb, 1810-1815 MDT, 16 May 2013. Fairly large drops. Trace precip. No thunder.
5/18/2013 7:00 AM 0.00 0.0 M 0.0 M
5/19/2013 7:00 AM 0.00 0.0 M 0.0 M
5/20/2013 7:00 AM 0.08 0.0 M 0.0 M RW-- 1030-1040 MDT 19 May 2013, trace precip. RW- 1255-1310 MDT, precip 0.02". TRW- 1705-1715 MDT, precip +.03". R- began 0630 MDT 20 May 2013, continuing at obs time. Precip so far +.03".
5/21/2013 7:00 AM 0.10 0.0 M 0.0 M R- in progress at 0700 MDT 20 May 2013, ended by 0745 MDT. Precip 0.05". Several RW-- during the morning, producing a total of maybe +.01 precip. RW-A (BB-size hail) 1445-1453 MDT (+.04), then occasional sprinkles (trace) til early evening.
5/22/2013 7:00 AM 0.00 0.0 M 0.0 M
5/23/2013 7:00 AM 0.05 0.0 M 0.0 M One low rumble of thunder at 2010 MDT 22 May 2013, followed by RW- 2015-2035 MDT (precip .03"), then a second RW- 2100-2130 MDT (precip +.02").
5/24/2013 7:00 AM 0.00 0.0 M 0.0 M
5/25/2013 7:00 AM 0.00 0.0 M 0.0 M
5/26/2013 7:00 AM 0.00 0.0 M 0.0 M
5/27/2013 7:00 AM 0.00 0.0 M 0.0 M
5/28/2013 7:00 AM 0.00 0.0 M 0.0 M
5/29/2013 7:00 AM 0.01 0.0 M 0.0 M R- began ~0600 MDT 29 May 2013, continuing at obs time. Precip so far 0.01".
5/30/2013 7:00 AM 0.26 0.0 M 0.0 M R- at start of observing period, ending by 0900 MDT 29 May 2013. Precip 0.26".
5/31/2013 7:00 AM 0.00 0.0 M 0.0 M
6/1/2013 7:00 AM 0.00 0.0 M 0.0 M
6/2/2013 7:00 AM 0.00 0.0 M 0.0 M
6/3/2013 7:00 AM T 0.0 M 0.0 M Downburst with wind gusts to 35 mph 1945-2000 MDT 02 Jun 2013 and very light sprinkles of small drops. Trace precip.
6/4/2013 7:00 AM 0.00 0.0 M 0.0 M Max temperature 91 deg F, warmest day of the year so far.
6/5/2013 7:00 AM 0.15 0.0 M 0.0 M RW- 1645-1700 MDT 04 June 2013, precip 0.01". RW-- 1845-1855 MDT, trace precip. TRW- 2045-2115 MDT, one peal of thunder, precip +.06". More RW- 2200-2230 MDT, precip +.08". 24-h precip 0.15".
6/6/2013 7:00 AM 0.02 0.0 M 0.0 M Drizzle was falling at the beginning of the observing period. It ended at 0830 MDT 05 June 2013. Precip 0.02".
6/7/2013 7:00 AM 0.00 0.0 M 0.0 M
6/8/2013 7:00 AM T 0.0 M 0.0 M RW-- around 1245 MDT and again at 1600 MDT 07 June 2013. Trace precip both times
6/9/2013 7:00 AM T 0.0 M 0.0 M Brief RW-- around 1315, 1425 and 1515 MDT 08 June 2013. Trace precip each time.
6/10/2013 7:00 AM 0.00 0.0 M 0.0 M
6/11/2013 7:00 AM 0.00 0.0 M 0.0 M
6/12/2013 7:00 AM 0.00 0.0 M 0.0 M
6/13/2013 7:00 AM 0.00 0.0 M 0.0 M
6/14/2013 7:00 AM 0.03 0.0 M 0.0 M TRW- late aftn, most probably between 1700 and 1800 MDT 13 Jun 2013. Precip .03".
6/15/2013 7:00 AM 0.00 0.0 M 0.0 M
6/16/2013 7:00 AM 0.00 0.0 M 0.0 M
6/17/2013 7:00 AM 0.00 0.0 M 0.0 M
6/18/2013 7:00 AM T 0.0 M 0.0 M Thunder heard repeatedly 1130-1200 MDT 17 June 2013 but only light sprinkles fell (trace precip). Thunder again ~1500 MDT, but again, only light sprinkes (trace).
6/19/2013 7:00 AM 0.02 0.0 M 0.0 M RW--, just a few drops ~1825 MDT 18 June 2013 (trace). RW-- again at 1920 MDT (trace). TRW-- with large drops preceding BB-size hail, only a few pellets ~1955 MDT (surprisingly, only a trace precip). Thunder 2200-2210 MDT followed by RW- 2212-2220 MDT, precip 0.02".
6/20/2013 7:00 AM 0.00 0.0 M 0.0 M
6/21/2013 7:00 AM 0.00 0.0 M 0.0 M
6/22/2013 7:00 AM 0.00 0.0 M 0.0 M
6/23/2013 7:00 AM 0.02 0.0 M 0.0 M TRW- ~1540 MDT 22 June 2013. Precip .02".
6/24/2013 7:00 AM T M M M M TRW-- during the afternoon, time unknown. Trace precip.
6/25/2013 7:00 AM 0.00 0.0 M 0.0 M
6/26/2013 7:00 AM 0.00 0.0 M 0.0 M
6/27/2013 7:00 AM 0.00 0.0 M 0.0 M
6/28/2013 7:00 AM 0.00 0.0 M 0.0 M
6/29/2013 7:00 AM 0.75 0.0 M 0.0 M A few drops of rain with lightning in clouds at 1800 MDT 28 June 2013. Trace precip. TRW-, large drops, 1913-1918 MDT, precip .03". Thunder with hail 1/4 to 3/4" in diameter 2030-2035 MDT but very few raindrops. Hail bounced out of gauge. Only a trace precip measured. TRW+ began 2144 MDT. Hail 2146-2202 MDT 1/4-5/8" diameter, enough to almost cover patio deck. Heavy rain ended 2202 MDT, hail at 2205L. Frequent lightning, almost all in-cloud, about a flash per second. TRW- continued until 2240L. Precip +.72, of which at least .60" fell in 18 min. Vegetable garden suffered moderate damage. Enough leaves stripped from trees to require raking the next day. Worst hailstorm in our neighborhood since 24 June 2006.
6/30/2013 7:00 AM T 0.0 M 0.0 M Brief RW-- ~0900 MDT 29 June 2013. Trace precip. Another brief RW-- ~1330 MDT. Trace precip.
7/1/2013 7:00 AM 0.02 M M M M RW-- ~0900 MDT 30 June 2013. Trace precip. RW-- at 1130 MDT. Trace precip. TRW-1230-1240 MDT, precip .02", then RW-- 1240-1300 MDT, precip trace.
7/2/2013 7:00 AM 0.00 0.0 M M M
7/3/2013 7:00 AM 0.00 0.0 M M M
7/4/2013 7:00 AM 0.00 0.0 M M M
7/5/2013 7:00 AM 0.02 M M M M TRW- 1615-1645 MDT 04 Jul 2013. Precip .02".
7/6/2013 7:00 AM 0.01 M M M M Sprinkles several times during the afternoon of 05 Jul 2013 (trace precip). Brief RW- 1730-1735 MDT. Precip .01". Sprinkles ~0145 MDT 06 Jul 2013 (trace precip) followed by gusty west winds (G30) until nearly 0600 MDT.
7/7/2013 7:00 AM 0.01 M M M M Brief RW- around 1900 MDT 06 Jul 2013, lasted less than ten minutes. Precip .01".
7/8/2013 7:00 AM 0.00 0.0 M M M
7/9/2013 7:00 AM 0.00 0.0 M M M
7/10/2013 7:00 AM 0.00 0.0 M M M
7/11/2013 7:00 AM 0.00 0.0 M M M
7/12/2013 7:00 AM 0.02 M M M M Lightning in clouds with RW-- ~2200 MDT 11 July 2013 (trace precip). RW- (precip 0.02") 2300-2330 MDT.
7/13/2013 7:00 AM 0.11 M M M M TRW-- 1455-1530 MDT 12 Jul 2013 (trace precip). TRW- 1530-1540 MDT (precip .06"). Occasional Sprinkles thru 1630 MDT (trace). TRW- 1815-1915 MDT (precip +.05). 24-h total precip 0.11".
7/14/2013 7:00 AM 0.06 M M M M TRW- 1430-1450 MDT 13 July 2013. Precip (.02"). Sprinkles and occasional rumbles of thunder 1500-1700 MDT (trace precip). TRW- 1700-1800 MDT (precip +.04"). 24-h total precip 0.06".
7/15/2013 7:00 AM 0.12 M M M M Heavy showers nearby during the afternoon and evening of 14 July 2013, but nothing at home. RW- 0230-0530 MDT 15 July 2013 brought 0.12" precip.
7/16/2013 7:00 AM 0.01 M M M M Brf TRW- between 1400 and and 1430 MDT 15 July 2013 brought only 0.01" precip.
7/17/2013 7:00 AM 0.00 0.0 M M M
7/18/2013 7:00 AM 0.00 0.0 M M M
7/19/2013 7:00 AM T M M M M Sprinkles of rain mid-afternoon on 20 July 2013. Heavier showers nearby. Trace precip.
7/20/2013 7:00 AM 0.00 0.0 M M M
7/21/2013 7:00 AM 0.00 0.0 M M M
7/22/2013 7:00 AM 0.00 0.0 M M M
7/23/2013 7:00 AM 0.00 0.0 M M M
7/24/2013 7:00 AM 0.00 0.0 M M M
7/25/2013 7:00 AM T M M M M Thunder heard 1345-1415 MDT 24 July 2013. A few drops of rain at 1400 MDT. Trace precip.
7/26/2013 7:00 AM 0.30 M M M M TRW- 1340-1530 MDT 25 July 2013. Precip 0.30".
7/27/2013 7:00 AM 0.01 M M M M TRW- ~1600 MDT 26 Jul 2013. Precip .01".
7/28/2013 7:00 AM 0.15 M M M M TRW- mid-afternoon and again in early evening. Precip 0.15".
7/29/2013 7:00 AM 0.02 M M M M RW- ~1330 MST 28 July 2013. Precip .02
7/30/2013 7:00 AM 0.03 M M M M RW- late morning and early afternoon. Precip .03".
7/31/2013 7:00 AM 0.04 M M M M TRW- ~1900 MDT 30 July 2013. Precip 0.04".
8/1/2013 7:00 AM 0.00 0.0 M M M
8/2/2013 7:00 AM 0.08 M M M M TRW- 1525-1545 MDT 01 Aug 2013. Precip 0.08".
8/3/2013 7:00 AM 0.00 0.0 M M M
8/4/2013 7:00 AM 0.12 M M M M TRW- 1750-1845 MDT 03 Aug 2013. Precip 0.12". Much heavier storms 20 ESE.
8/5/2013 7:00 AM T M M M M Sprinkles ~1615 MDT 04 Aug 2013. Trace precip.
8/6/2013 7:00 AM 0.03 M M M M Occasional TRW- 1545-1715 MDT 05 Aug 2013. Precip .03".
8/7/2013 7:00 AM 0.07 M M M M TRW- 1545-1600 MDT 06 Aug 2013. Precip 0.07".
8/8/2013 7:00 AM 0.00 0.0 M M M
8/9/2013 7:00 AM T M M M M Sprinkles around 2300 MDT 08 Aug 2013. Trace precip.
8/10/2013 7:00 AM T M M M M Thunder heard NW during the noon hour but no rain. RW-- 1600-1630 MDT 09 Aug 2013. Trace precip.
8/11/2013 7:00 AM 0.20 M M M M TRW-1715-1745 MDT 10 Aug 2013. Precip 0.20".
8/12/2013 7:00 AM 0.00 0.0 M M M
8/13/2013 7:00 AM 0.14 M M M M RW-- 1800-1815 MDT 12 Aug 2013. Trace precip. Thunder first heard at 2020 MDT. A few big drops at 2030 MDT, then 2-min TRW starting at 2037 MDT, followed by TRW- until 2050 MDT, then occasional R-. Precip .06" as of 2130 MDT, with .08" more by the time precip ended at 0030 MDT 14 Aug.
8/14/2013 7:00 AM 0.01 0.0 M M M RW-- ~1430 MDT 13 Aug 2013. Trace precip. RW- ~1615 MDT. Precip .01.
8/15/2013 7:00 AM T M M M M Brief TRW-- around 1630 and 1730 MDT, 14 Aug 2013, each brought a trace of precip.
8/16/2013 7:00 AM 0.02 M M M M TRW- 1730-1750 MDT 15 Aug 2013. Precip .01". RW- 1800-1810 MDT. Precip +.01". Daily total .02".
8/17/2013 7:00 AM 0.00 0.0 M M M
8/18/2013 7:00 AM 0.00 0.0 M M M
8/19/2013 7:00 AM T M M M M RW-- 1730-1740L. Trace precip.
8/20/2013 7:00 AM 0.00 0.0 M M M
8/21/2013 7:00 AM 0.00 0.0 M M M
8/22/2013 7:00 AM 0.25 M M M M TRW- 1715-1755 MDT 21 Aug 2013 bracketing TRW 1720-1740 MDT. Precip 0.25".
8/23/2013 7:00 AM 0.02 M M M M TRW- 1700-1720 MDT 22 Aug 2013. Precip .02".
8/24/2013 7:00 AM 0.08 M M M M TRW- 1830-1900 MDT 23 Aug 2013. Precip 0.08".
8/25/2013 7:00 AM 0.14 M M M M Two periods of showers today, one in mid-afternoon 24 Aug 2013(estimated precip 0.11") and one at night. Lightning visible at 2055 MDT. RW- 2100-2130 MDT 24 Aug, precip +.03".
8/26/2013 7:00 AM T M M M M Brief RW-- about 1800 MDT 25 Aug 2013. Trace precip.
8/27/2013 7:00 AM 0.10 M M M M TRW-- around 1425 MDT 26 Aug 2013. Trace precip. TRW began 2157 MDT, ended 2210 MDT. Precip 0.10"
8/28/2013 7:00 AM 0.00 0.0 M M M
8/29/2013 7:00 AM 0.00 0.0 M M M
8/30/2013 7:00 AM T M M M M RW--, small drops, around 1945 MDT 29 Aug 2013. Trace precip.
8/31/2013 7:00 AM T M M M M RW-- (a few drops) ~1900 MDT 30 Aug 2013. Trace precip.
9/1/2013 7:00 AM 0.19 0.0 M 0.0 M Sprinkles in the neighborhood ~1640 MDT 31 Aug 2013. Trace precip. RW 0420-0440 MDT 01 Sep 2013. Precip 0.19".
9/2/2013 7:00 AM 0.00 0.0 M 0.0 M
9/3/2013 7:00 AM 0.00 0.0 M 0.0 M
9/4/2013 7:00 AM 0.00 0.0 M 0.0 M
9/5/2013 7:00 AM 0.00 0.0 M 0.0 M
9/6/2013 7:00 AM 0.00 0.0 M 0.0 M
9/7/2013 7:00 AM 0.00 0.0 M 0.0 M
9/8/2013 7:00 AM 0.00 0.0 M 0.0 M
9/9/2013 7:00 AM 0.00 0.0 M 0.0 M
9/10/2013 7:00 AM 1.27 0.0 M 0.0 M Thunder heard at 1400 MDT 09 Sep 2013L. RW-- ~1415 MDT, trace precip. Thunderstorm began ~1715 MDT. Occasional LTGCG/ LTGIC thru 2145 MDT. Rain intensity variable, but R+ 1850-1855 MDT and again 1925-1935 MDT. Only R- after 1945L, continuing thru midnight. RW likely 0130-0150L, when measurable pcpn probably ended. 24-h precip ending at 0700 MDT 10 Sep: 1.27".
9/11/2013 7:00 AM 1.28 0.0 M 0.0 M I was out of the country on this day. My wife made precip measurements. Very light rain or drizzle began ~0700 MDT 10 Sep 2013. Precip increased to R- (small drops) ~0900 MDT, then R thru 1130 MDT, then L- by noon and quitting by 1300 MDT. 0.25" in rain gauge at 1500 MDT. Darkening skies by 16L. R-- began ~1800 MDT, increased to R- by 2000 MDT and probably continued thru most of the evening. R/R+ 2330 MDT 10 Sep thru 0030 MDT 11 Sep. Very light rain or drizzle likely thru dawn on 11 Sep. The next precip measurement was 1.27 at 1100 MDT Wed 11 Sep. Based on nearby CoCoRAHS measurements, I estimate that 1.28 fell in the 24 h ending 0700 MDT 11 Sep (based on the estimate that 0.24" precip fell between 0700 and 1100 MDT on 11 Sep.
9/12/2013 7:00 AM 7.73 0.0 M 0.0 M Precip in progress at 0700 MDT 11 Sep 2013, alternating mostly between R- and drizzle during the morning. 1.27" in the gauge at 1100 MDT (since 1500 MDT 10 Sep), of which I estimate .24 fell since 0700 MDT 11 Sep. R and R- during the afternoon and early evening probably amounted to ~0.8” 1100-1830 MDT. Rainfall became heavy after 1830 MDT and fell at the rate of 0.75 to 1.00” per hour for the next 4-5 hours. Lightning and thunder 2145-2210 MDT. At 2100 MDT, 3.69" in gauge (10-h amount). That was enough to flood the laundry room from the outside. Water draining off the roof collected and pooled on the sidewalk by the basement steps, then overflowed and came cascading down the stairs. The drain at the bottom of the stairs couldn’t handle this much water, so it flowed under the door and into the laundry room, where (fortunately) it went into the drain there. All creeks and streams in Boulder were flooding by early on 12 Sep. The heavy rain was over by 0000 MDT 12 Sep, but light pcpn persisted probably until after 0400 MDT, when it became very light. RW-- likely at obs time (0700 MDT 12 Sep). Another 4.10" in the gauge at 0845 MDT 12 Sep, of which I estimate .30 fell between 0700 and 0845 MDT. The 24-h estimated total ending at 0700 MDT 12 Sep is thus 0.24 + 3.69 + 3.80 = 7.73". This amount of rainfall far exceeds the previous 24-h record amount for Boulder (4.50"), where records date back to 1893.
9/13/2013 6:45 AM 5.30 0.0 M 0.0 M Excessive rainfall continued for a second day. Rainfall light at 0700 MDT 12 Sep 2013, but RW+ 0800-0820L, then mostly R- until late morning. 4.10" in the gauge at 0845 MDT. Of that amount I estimate that .30 of that fell between 0700 and 0845 MDT. At 0845 MDT, the laundry room seemed okay but in the basement the TV room was flooded and the carpet was wet in Mike’s old bedroom and in the hallway leading to it. The storeroom had 1/2” standing water throughout. Gina called State Farm. She also discovered that the kitchen skylight was leaking, and put out a bucket to catch the drip. Skies darkened ~1115 MDT, and rain became at least moderate. At 1245 MDT, the tornado sirens were blaring, rainfall was R/R+, and this continued for the rest of the afternoon. A north-south band of heavy rain set up over Boulder, with max reflectivities of 35-40 dBZ. Rain was heaviest 1530-1630 MDT. There was no lightning or thunder. By late afternoon, travel N-S across Boulder was very difficult because of numerous flooded streets. Table Mesa Dr. west of Broadway was closed. R- 1730-1745 MDT, then R+ 1700-1845 MDT, R-1845-1900 MDT, a brief spurt of R+ ~1930 MDT, tapering off to very light pcpn by 2200 MDT. 4.65" in the gauge at 2130 MDT, by which time the basement was completely flooded, 2-3” deep in the boys’ old bedrooms. The laundry room had flooded twice more, and there was water in more than half the carpet in my den. The kitchen skylight sprang two more leaks. Precip was mostly very light after 2200 MDT 12 Sep, except for an RW- ~0400 MDT 13 Sep. At 0645 MDT 13 Sep, another 0.35" in the rain guage (since 2130 MDT 12 Sep). The rain had stopped. The estimated 24-h precip, ending 0700 MDT 13 Sep is thus 0.30 + 4.65 + 0.35 = 5.30"
9/14/2013 7:00 AM 0.12 M M M M R-- and R- 0800-1000 MDT 13 Sep 2013. Some blue sky and perhaps two hours of sunshine late morning thru mid afternoon. Light sprinkles and thunder between 1700-1800 MDT (estimated precip T or .01). No rain fell 1800 13 Sep thru 0700 MDT 14 Sep, at which time there was 0.12 in the gauge (24-hour amount).
9/15/2013 7:00 AM 0.20 0.0 M 0.0 M TRW-- 1315-1330 MDT 14 Sep 2013 moved NE over Boulder and dissipated (trace precip). Clouds began thickening and darkening over mountains toward evening. Rain began ~2045 MDT and was moderate by 2140 MDT. Thunder heard at 2145 MDT. Rain ended at 2230 MDT.
9/16/2013 7:00 AM 2.04 0.0 M 0.0 M I was out of the country, and my wife was out of town on 15 Sep. When she returned, she measured 2.26" in my rain gauge at 1125 MDT 16 Sep 2013, of which I estimate .20 fell before 0700 MDT on 15 Sep and .02 fell after 0700 MDT on 16 Sep, leaving 2.04" for the 24-hour total ending 0700 MDT 16 Sep. I relied on John Brown’s weather notes and CoCoRAHS for allocating the 2.26” of precip among the three days. Substantial rainfall occurred Sunday morning 15 Sep, probably starting by 0700 MDT. Heaviest rain (some R+) 1000-1230 MDT, slowly tapering off and ending by 1400 MDT. The morning rainfall was enough to increase flow rates in local drainages, but apparently not enough to cause renewed flooding. After an afternoon respite, R- and some R, very small drops, resumed ~1700 MDT and continued, becoming mostly drizzle after dark and continuing at least intermittently all night. Drizzle at obs time (0700 MDT 16 Sep).
9/17/2013 7:00 AM 0.02 0.0 M 0.0 M Low overcast with drizzle at 0700 MDT 16 Sep. Drizzle was thick, almost like R- for awhile. It became very light by 0900 MDT and quit altogether by 0950 MDT. Precip 0.02".
9/18/2013 7:00 AM 0.00 0.0 M 0.0 M
9/19/2013 7:00 AM 0.07 0.0 M 0.0 M TRW- 1455-1505 MDT 18 Sep 2013, with a few cloud-to-ground strikes from a storm strengthening as it moved overhead and to the northeast. Intermittent RW- 1505-1530 MDT. Precip .07".
9/20/2013 7:00 AM 0.00 0.0 M 0.0 M
9/21/2013 7:00 AM 0.00 0.0 M 0.0 M
9/22/2013 7:00 AM 0.00 0.0 M 0.0 M
9/23/2013 7:00 AM 0.46 0.0 M 0.0 M A few sprinkles ~1145 MDT 22 Sep 2013 (trace). More sprinkles late afternoon (trace). Steady R- began ~2200 MDT and continued until 0345 MDT 23 Sep 2013. Precip 0.46".
9/24/2013 7:00 AM 0.00 0.0 M 0.0 M
9/25/2013 7:00 AM 0.00 0.0 M 0.0 M
9/26/2013 7:00 AM 0.00 0.0 M 0.0 M
9/27/2013 7:00 AM 0.04 0.0 M 0.0 M RW- began ~0545 MDT 27 Sep 2013, changed to drizzle by 0600 MDT. Drizzle continued as of obs time, 0700 MDT. Precip so far 0.04".
9/28/2013 7:00 AM 0.46 0.0 M 0.0 M Drizzle was falling at 0700 MDT 27 Sep 2013. It continued, sometimes mixed with light rain, during the morning. Perhaps .05-.10" precip from 0700 to 1200 MDT, but not measured. No precip midday thru early afternoon. Steady R- 1600-2030 MDT. 24-hour total 0.46". Clearing very early on 28 Sep. First frost and first freeze (min 32 deg F) recorded at 0700 MDT 28 Sep 2013.
9/29/2013 7:00 AM 0.00 0.0 M 0.0 M
9/30/2013 7:00 AM 0.00 0.0 M 0.0 M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground