Station Overview Station Location
Station Number CO-BO-8 Latitude 39.9925
Station Name Lafayette 0.4 WSW Longitude -105.1057
County Boulder Elevation (ft) 5285



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 09 1.12 2.36 31 2.36 31 0.00 0 0 10 2 25.8 4 7
Nov 09 0.95 0.90 30 0.90 30 0.00 0 0 3 0 8.4 3 8
Dec 09 0.70 0.81 31 0.81 31 0.00 0 0 10 0 20.0 10 25
Jan 10 0.49 0.12 31 0.12 31 0.00 0 0 2 2 2.6 2 19
Feb 10 0.47 0.76 28 0.76 28 0.00 0 0 9 1 15.5 9 16
March 10 1.56 0.71 24 0.71 24 0.00 0 0 5 2 8.1 4 3
April 10 2.01 3.32 30 3.32 30 0.00 0 0 10 2 5.1 6 2
May 10 2.25 2.13 31 2.13 31 0.00 0 0 10 2 3.0 2 1
June 10 1.88 2.27 30 2.27 30 0.00 0 0 8 2 0.0 0 0
July 10 1.54 1.97 31 1.97 31 0.00 0 0 13 4 0.0 0 0
Aug 10 1.65 1.61 31 1.61 31 0.00 0 0 10 3 0.0 0 0
Sept 10 1.40 0.28 30 0.28 30 0.00 0 0 4 1 0.0 0 0
Water Year Totals: 16.02" 17.24" 358 days 17.24" 358 0.00" 0 days 0 94 days 21 days 88.5" 40 days 81 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
10/1/2009 0.00
10/2/2009 0.00
10/3/2009 0.00
10/4/2009 0.00
10/5/2009 0.00
10/6/2009 0.20
10/7/2009 0.00
10/8/2009 0.01
10/9/2009 0.06
10/10/2009 0.10
10/11/2009 T
10/12/2009 0.00
10/13/2009 0.00
10/14/2009 0.00
10/15/2009 0.00
10/16/2009 0.00
10/17/2009 0.00
10/18/2009 0.00
10/19/2009 0.00
10/20/2009 0.00
10/21/2009 0.13
10/22/2009 0.21
10/23/2009 0.00
10/24/2009 0.00
10/25/2009 T
10/26/2009 0.02
10/27/2009 0.00
10/28/2009 0.83
10/29/2009 0.75
10/30/2009 0.05
10/31/2009 0.00
11/1/2009 0.00
11/2/2009 0.00
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.00
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.00
11/12/2009 0.00
11/13/2009 0.00
11/14/2009 0.09
11/15/2009 0.75
11/16/2009 0.06
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 0.00
11/20/2009 0.00
11/21/2009 0.00
11/22/2009 0.00
11/23/2009 0.00
11/24/2009 0.00
11/25/2009 0.00
11/26/2009 0.00
11/27/2009 0.00
11/28/2009 0.00
11/29/2009 0.00
11/30/2009 0.00
12/1/2009 0.00
12/2/2009 0.10
12/3/2009 0.03
12/4/2009 0.00
12/5/2009 0.00
12/6/2009 0.09
12/7/2009 0.09
12/8/2009 0.01
12/9/2009 0.04
12/10/2009 0.00
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 0.00
12/14/2009 0.00
12/15/2009 0.00
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 0.00
12/19/2009 0.00
12/20/2009 0.00
12/21/2009 0.00
12/22/2009 0.00
12/23/2009 0.17
12/24/2009 0.25
12/25/2009 0.00
12/26/2009 0.01
12/27/2009 0.02
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.00
1/2/2010 0.00
1/3/2010 T
1/4/2010 T
1/5/2010 0.00
1/6/2010 0.00
1/7/2010 0.09
1/8/2010 0.00
1/9/2010 0.00
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 0.00
1/13/2010 0.00
1/14/2010 0.00
1/15/2010 0.00
1/16/2010 0.00
1/17/2010 0.00
1/18/2010 0.00
1/19/2010 0.00
1/20/2010 0.00
1/21/2010 0.00
1/22/2010 0.00
1/23/2010 0.00
1/24/2010 0.00
1/25/2010 0.00
1/26/2010 0.00
1/27/2010 0.00
1/28/2010 0.03
1/29/2010 0.00
1/30/2010 0.00
1/31/2010 0.00
2/1/2010 0.00
2/2/2010 0.00
2/3/2010 0.00
2/4/2010 T
2/5/2010 0.00
2/6/2010 0.00
2/7/2010 0.00
2/8/2010 0.13
2/9/2010 0.07
2/10/2010 0.00
2/11/2010 0.00
2/12/2010 0.00
2/13/2010 0.00
2/14/2010 0.12
2/15/2010 0.01
2/16/2010 0.00
2/17/2010 0.00
2/18/2010 0.00
2/19/2010 0.14
2/20/2010 0.03
2/21/2010 0.13
2/22/2010 0.06
2/23/2010 0.00
2/24/2010 0.00
2/25/2010 0.00
2/26/2010 0.07
2/27/2010 0.00
2/28/2010 0.00
3/1/2010 0.05
3/2/2010 0.00
3/3/2010 0.00
3/4/2010 0.00
3/5/2010 0.00
3/6/2010 0.00
3/7/2010 0.00
3/8/2010 T
3/9/2010 0.00
3/10/2010 T
3/11/2010 0.01
3/12/2010 0.00
3/13/2010 0.00
3/14/2010 0.00
3/15/2010 0.17
3/16/2010 0.00
3/17/2010 0.00
3/18/2010 0.00
3/19/2010 0.08
3/20/2010 0.40
3/21/2010
3/22/2010
3/23/2010
3/24/2010
3/25/2010
3/26/2010
3/27/2010
3/28/2010 0.00
3/29/2010 0.00
3/30/2010 0.00
3/31/2010 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 0.03
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 0.08
4/7/2010 0.22
4/8/2010 T
4/9/2010 0.00
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 0.04
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 T
4/22/2010 0.94
4/23/2010 0.39
4/24/2010 1.07
4/25/2010 0.00
4/26/2010 0.16
4/27/2010 0.00
4/28/2010 0.00
4/29/2010 0.11
4/30/2010 0.28
5/1/2010 T
5/2/2010 0.00
5/3/2010 0.00
5/4/2010 0.00
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.08
5/8/2010 0.00
5/9/2010 0.00
5/10/2010 0.00
5/11/2010 0.00
5/12/2010 1.12
5/13/2010 0.06
5/14/2010 0.18
5/15/2010 0.27
5/16/2010 0.02
5/17/2010 0.00
5/18/2010 0.00
5/19/2010 0.03
5/20/2010 T
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 0.00
5/26/2010 0.03
5/27/2010 0.20
5/28/2010 0.00
5/29/2010 0.00
5/30/2010 0.14
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.00
6/3/2010 0.00
6/4/2010 0.00
6/5/2010 0.00
6/6/2010 0.00
6/7/2010 T
6/8/2010 0.00
6/9/2010 0.02
6/10/2010 0.00
6/11/2010 0.24
6/12/2010 0.79
6/13/2010 0.48
6/14/2010 0.40
6/15/2010 0.01
6/16/2010 0.00
6/17/2010 0.00
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 T
6/22/2010 0.21
6/23/2010 0.00
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.12
6/28/2010 0.00
6/29/2010 0.00
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.05
7/4/2010 0.05
7/5/2010 0.81
7/6/2010 0.00
7/7/2010 0.09
7/8/2010 0.14
7/9/2010 0.02
7/10/2010 0.00
7/11/2010 0.00
7/12/2010 T
7/13/2010 0.00
7/14/2010 T
7/15/2010 0.03
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 T
7/20/2010 0.01
7/21/2010 T
7/22/2010 0.38
7/23/2010 0.00
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.00
7/27/2010 0.00
7/28/2010 0.05
7/29/2010 0.31
7/30/2010 0.02
7/31/2010 0.01
8/1/2010 0.00
8/2/2010 0.01
8/3/2010 0.03
8/4/2010 T
8/5/2010 T
8/6/2010 0.00
8/7/2010 0.07
8/8/2010 0.03
8/9/2010 0.00
8/10/2010 0.09
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 T
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 0.00
8/17/2010 0.92
8/18/2010 0.00
8/19/2010 0.00
8/20/2010 0.18
8/21/2010 0.00
8/22/2010 0.00
8/23/2010 0.00
8/24/2010 0.19
8/25/2010 0.08
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 0.00
8/30/2010 0.00
8/31/2010 0.01
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.12
9/10/2010 0.00
9/11/2010 0.00
9/12/2010 0.00
9/13/2010 0.00
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 0.00
9/17/2010 0.00
9/18/2010 T
9/19/2010 0.01
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.09
9/23/2010 0.06
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 0.00
9/28/2010 0.00
9/29/2010 0.00
9/30/2010 0.00



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 can you say windy? - but no more than twigs/leaves down
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 0.00 0.0 M 0.0 M
10/6/2009 7:00 AM 0.20 0.0 M 0.0 M bulk of precip afternoon/eve
10/7/2009 7:00 AM 0.00 0.0 M 0.0 M
10/8/2009 5:30 AM 0.01 0.0 M 0.0 M drizzle began probably around 0400
10/9/2009 7:00 AM 0.06 T M 0.0 M L most of day w/ocnl SW-- mixed in.
10/10/2009 8:00 AM 0.10 1.6 M 1.5 M started as snow grains ca 2030, then S- ca 2100 0.5" as of 23L, +1.1" over night morning min 19F
10/11/2009 7:00 AM T 0.0 M 0.5 M some ZL- over night
10/12/2009 7:00 AM 0.00 0.0 M 0.5 M
10/13/2009 7:00 AM 0.00 0.0 M 0.0 M remaining snow melted by mid-day
10/14/2009 7:00 AM 0.00 0.0 M 0.0 M foggy this morning
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 5:15 AM 0.13 T M 0.0 M L- in evening; some snow mixed with rain a.m.
10/22/2009 7:00 AM 0.21 T M 0.0 M snow showers approx 0715-0830
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 T 0.0 M 0.0 M RW-- 1730; RW-- ca 0200
10/26/2009 7:00 AM 0.02 T M 0.0 M SW- late morning to early aftn - no accum
10/27/2009 7:00 AM 0.00 0.0 M 0.0 M
10/28/2009 5:30 AM 0.83 5.4 M 5.5 M first drops 1615, R- 1735, S- 1940. 1.7"/.38" 2200, +3.7"/.45" 0530. Very wet and heavy accum. Largely snow pellets near obs time.
10/29/2009 5:30 AM 0.75 17.8 M 18.0 M little if any accum after about 02L; +7.0 13L, +7.7/.68" 22L, +3.1/.17" 0530
10/30/2009 7:00 AM 0.05 1.0 M 10.0 M S- off and on during day, sun dimly vsbl occasionally, moon vsbl eve
10/31/2009 7:00 AM 0.00 0.0 M 6.0 M
11/1/2009 7:00 AM 0.00 0.0 M T M
11/2/2009 7:00 AM 0.00 0.0 M 0.0 M
11/3/2009 7:00 AM 0.00 0.0 M 0.0 M
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 max 74F
11/7/2009 7:00 AM 0.00 0.0 M 0.0 M Fri max 72F
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 0.09 0.7 M 0.5 M S--B 1520 E ca 18L
11/15/2009 7:00 AM 0.75 7.2 M 7.5 M daily amount estimated from storm total .81" in gauge p.m. 16th & nearby CoCoRaHS reports
11/16/2009 7:00 AM 0.06 0.5 M 7.0 M daily amount estimated from storm total .81" in gauge p.m. 16th & nearby CoCoRaHS reports
11/17/2009 7:00 AM 0.00 0.0 M 5.0 M
11/18/2009 7:00 AM 0.00 0.0 M 3.0 M
11/19/2009 7:00 AM 0.00 0.0 M 2.0 M
11/20/2009 7:00 AM 0.00 0.0 M 1.0 M
11/21/2009 7:00 AM 0.00 0.0 M 0.5 M
11/22/2009 7:00 AM 0.00 0.0 M T M
11/23/2009 7:00 AM 0.00 0.0 M T M
11/24/2009 7:00 AM 0.00 0.0 M T M
11/25/2009 7:00 AM 0.00 0.0 M T M
11/26/2009 7:00 AM 0.00 0.0 M T M
11/27/2009 7:00 AM 0.00 0.0 M T M
11/28/2009 7:00 AM 0.00 0.0 M T M
11/29/2009 7:00 AM 0.00 0.0 M T M
11/30/2009 7:00 AM 0.00 0.0 M T M
12/1/2009 7:00 AM 0.00 0.0 M T M
12/2/2009 5:25 AM 0.10 2.4 M 2.5 M became ovc by ca 20L, S-- B ca 22L; ~1" at 01L. Moon dmly vsbl 0515.
12/3/2009 7:00 AM 0.03 1.0 M 3.0 M S-Eca10L (+0.9"/.03"), skies cleared around 14L; SWU ca 0130L (0.1"/T)
12/4/2009 7:00 AM 0.00 0.0 M 3.0 M
12/5/2009 7:00 AM 0.00 0.0 M 2.0 M
12/6/2009 7:15 AM 0.09 2.5 M 4.5 M between ca 00L and 02L, S-- w/no accumulation; ~0.5" 0330; 2.5"/.09" 0715
12/7/2009 5:15 AM 0.09 2.6 M 7.5 M snow rate tapered off mid-day, but S- to S-- continued all night; only 0.3"/.01" 2115-0515
12/8/2009 5:30 AM 0.01 0.3 M 5.0 M SW-- during day, but only T new by 2130. S-- over night, 0.3" as of 0530. Snow on ground compressed a couple of inches.
12/9/2009 7:00 AM 0.04 0.7 M 5.0 M S- E mid-afternoon; mo clr by 17L
12/10/2009 7:00 AM 0.00 0.0 M 4.5 M Wind came up just before midnight, temp rose to daily max of 14F. Snow drifted during night w/occasional winds.
12/11/2009 7:00 AM 0.00 0.0 M 4.0 M
12/12/2009 7:00 AM 0.00 0.0 M 4.0 M
12/13/2009 7:00 AM 0.00 0.0 M 1.5 M ocnl windy - especially gusty at 2255
12/14/2009 7:00 AM 0.00 0.0 M 1.0 M
12/15/2009 7:00 AM 0.00 0.0 M 1.0 M
12/16/2009 7:00 AM 0.00 0.0 M 0.5 M
12/17/2009 7:00 AM 0.00 0.0 M 0.5 M
12/18/2009 7:00 AM 0.00 0.0 M T M
12/19/2009 7:00 AM 0.00 0.0 M T M
12/20/2009 7:00 AM 0.00 0.0 M T M
12/21/2009 7:00 AM 0.00 0.0 M T M
12/22/2009 7:00 AM 0.00 0.0 M T M
12/23/2009 5:25 AM 0.17 2.3 M 2.0 M
12/24/2009 7:00 AM 0.25 7.6 M 9.5 M about 4" of very fluffy snow fell during the evening with a north wind; +6.3/.22" 2230. SE between 0330 & 0430, w/partial clearing by 0500; +1.3/.03"
12/25/2009 7:00 AM 0.00 0.0 M 7.0 M
12/26/2009 7:00 AM 0.01 0.2 M 7.0 M S-- during night, w/no more than a dusting as of 0300
12/27/2009 7:00 AM 0.02 0.4 M 5.5 M sky cleared quickly around 1100; SE 1110 w/sunshine
12/28/2009 7:00 AM 0.00 0.0 M 5.0 M
12/29/2009 7:00 AM 0.00 0.0 M 5.0 M
12/30/2009 7:00 AM 0.00 0.0 M 5.0 M
12/31/2009 7:00 AM 0.00 0.0 M 4.5 M
1/1/2010 7:00 AM 0.00 0.0 M 4.5 M
1/2/2010 7:00 AM 0.00 0.0 M 4.0 M
1/3/2010 7:00 AM T T M 4.0 M SPW-- just after noon
1/4/2010 7:00 AM T T M 4.0 M S-- 1545-1615, not even a dusting
1/5/2010 7:00 AM 0.00 0.0 M 3.5 M
1/6/2010 7:00 AM 0.00 0.0 M 3.0 M
1/7/2010 7:00 AM 0.09 2.2 M 5.5 M SP-- 0745, then S-/S-- most of day; only 0.1" accum after 2000, clear by 0300
1/8/2010 7:00 AM 0.00 0.0 M 5.0 M
1/9/2010 7:00 AM 0.00 0.0 M 5.0 M
1/10/2010 7:00 AM 0.00 0.0 M 4.5 M
1/11/2010 7:00 AM 0.00 0.0 M 3.5 M
1/12/2010 7:00 AM 0.00 0.0 M 2.5 M Another sunny mid-40s day took care of more snow - but still some streets are covered. Back yard mostly 4" deep still, but SW-facing front is nearly half bare. I guess we'll wait for the wind to really clean things up.
1/13/2010 7:00 AM 0.00 0.0 M 2.0 M 55F max -> more meltage!
1/14/2010 7:00 AM 0.00 0.0 M 1.5 M Another mild day with more melting. Yet still those who failed to clear their sidewalks are plagued with ice (and so are we who want to walk there :^).
1/15/2010 7:00 AM 0.00 0.0 M 1.0 M
1/16/2010 7:00 AM 0.00 0.0 M 1.0 M
1/17/2010 7:00 AM 0.00 0.0 M 0.5 M
1/18/2010 7:00 AM 0.00 0.0 M 0.5 M
1/19/2010 7:00 AM 0.00 0.0 M T M yard now about 2/3 snow-free
1/20/2010 7:00 AM 0.00 0.0 M T M
1/21/2010 7:00 AM 0.00 0.0 M T M
1/22/2010 7:00 AM 0.00 0.0 M T M
1/23/2010 7:00 AM 0.00 0.0 M T M
1/24/2010 7:00 AM 0.00 0.0 M T M
1/25/2010 7:00 AM 0.00 0.0 M T M
1/26/2010 7:00 AM 0.00 0.0 M T M
1/27/2010 7:00 AM 0.00 0.0 M T M
1/28/2010 7:00 AM 0.03 0.4 M 0.5 M S-- B 1800, 0.3" at 2230, +0.1" thereafter, little if any accum after 0200
1/29/2010 7:00 AM 0.00 0.0 M T M dense fog & rime this morning
1/30/2010 7:00 AM 0.00 0.0 M T M
1/31/2010 7:00 AM 0.00 0.0 M T M
2/1/2010 7:00 AM 0.00 0.0 M T M
2/2/2010 7:00 AM 0.00 0.0 M T M
2/3/2010 7:00 AM 0.00 0.0 M T M
2/4/2010 7:00 AM T T M T M S-- B ca 0430, S- 0515-0600
2/5/2010 7:00 AM 0.00 0.0 M T M
2/6/2010 7:00 AM 0.00 0.0 M T M
2/7/2010 7:00 AM 0.00 0.0 M T M
2/8/2010 5:30 AM 0.13 1.9 M 2.0 M S--B0700; 1.0" as of 1530 w/little falling; +0.5"/.11" total 2200; +0.4"/.02" 0530
2/9/2010 7:00 AM 0.07 2.7 M 4.0 M less than 0.5" after 17L; cleared by 0300
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 1.0 M
2/12/2010 7:00 AM 0.00 0.0 M 0.5 M
2/13/2010 7:00 AM 0.00 0.0 M T M
2/14/2010 7:00 AM 0.12 3.7 M 4.0 M T by 0300; ~1/2" at 0330
2/15/2010 7:00 AM 0.01 0.3 M 2.0 M SE by ca 0900 with quick clearing and a sunny mid-day and afternoon
2/16/2010 7:00 AM 0.00 0.0 M 0.5 M
2/17/2010 7:00 AM 0.00 0.0 M T M
2/18/2010 7:00 AM 0.00 0.0 M T M
2/19/2010 7:00 AM 0.14 2.1 M 2.5 M 0.6" as of 1730, +1.0"/.12" 2200, +0.5"/.02" a.m. w/no accum after ca 0000
2/20/2010 7:00 AM 0.03 0.5 M 2.5 M S-- most of day, but no accum; S- mid-evening to pre-dawn
2/21/2010 7:00 AM 0.13 2.3 M 4.5 M very light snow most of day w/no accum; S- 1700ff 1.0" as of 23L, +1.3" 0630 with again just a couple of flakes in the air
2/22/2010 7:00 AM 0.06 1.1 M 5.0 M no accum during day in S-- & ocnl SW-; 0.5" 22L + 0.6" 0530, w/no accum thereafter
2/23/2010 7:00 AM 0.00 0.0 M 3.5 M
2/24/2010 7:00 AM 0.00 0.0 M 2.5 M
2/25/2010 7:00 AM 0.00 0.0 M 1.0 M
2/26/2010 7:00 AM 0.07 0.9 M 1.5 M S- late aftn to eve, most accum 1800-2100; sky cleared by 0030
2/27/2010 7:00 AM 0.00 0.0 M T M
2/28/2010 7:00 AM 0.00 0.0 M T M
3/1/2010 7:00 AM 0.05 0.8 M 1.0 M S- 1530-approx 2000 (0.8"/.05" 2100), then S-- all night w/only T accum
3/2/2010 7:00 AM 0.00 0.0 M T M
3/3/2010 7:00 AM 0.00 0.0 M T M
3/4/2010 7:00 AM 0.00 0.0 M T M
3/5/2010 7:00 AM 0.00 0.0 M T M
3/6/2010 7:00 AM 0.00 0.0 M T M
3/7/2010 7:00 AM 0.00 0.0 M T M
3/8/2010 7:00 AM T 0.0 M T M RWU 02-03L based on radar; asphalt wet at 0430, but cement surfaces dry
3/9/2010 7:00 AM 0.00 0.0 M T M
3/10/2010 7:00 AM T 0.0 M T M RW-- ca 2030, barely noticeable
3/11/2010 7:00 AM 0.01 T M T M RW-/SW- 1430-1600
3/12/2010 7:00 AM 0.00 0.0 M T M
3/13/2010 7:00 AM 0.00 0.0 M T M down to the last tiny patch of snow in the back yard
3/14/2010 7:00 AM 0.00 0.0 M T M
3/15/2010 7:00 AM 0.17 0.7 M 0.5 M SWU ca 1130, then R- through aftn/early eve, changed to S- ca 2030, ended ca 02L. .12" in rain
3/16/2010 7:00 AM 0.00 0.0 M T M
3/17/2010 7:00 AM 0.00 0.0 M T M
3/18/2010 7:00 AM 0.00 0.0 M T M
3/19/2010 5:30 AM 0.08 0.3 M T M R-B ca 00L, still rain at 0330, ZR-/S- B ca 0400
3/20/2010 7:00 AM 0.40 6.3 M 7.0 M less than 1/2" accum after 1800
3/28/2010 7:00 AM 0.00 0.0 M T M about 1/3 of yard still covered
3/29/2010 7:00 AM 0.00 0.0 M T M
3/30/2010 7:00 AM 0.00 0.0 M T M
3/31/2010 7:00 AM 0.00 0.0 M 0.0 M 81F max yesterday took care of the last of our snow - first completely snow-free day since 13 Nov. Still some small patches of snow in some neighbors' yards.
4/1/2010 7:00 AM 0.00 0.0 M 0.0 M
4/2/2010 7:00 AM 0.03 T M 0.0 M R-SP- 1705-1800, no accum
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 0.08 0.1 M 0.0 M RWA1/16 0432-0438, R- E0508. Thunder roughly 0615-0645 w/ltg NE-E
4/7/2010 7:00 AM 0.22 2.1 M 2.0 M at 0156, very light precip w/only a smattering of drops on the deck
4/8/2010 7:00 AM T T M 0.0 M SE ca 0800, with little or no accum after 0700
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 0.04 0.0 M 0.0 M ocnl R- 1200-1500 .04"; RW- 2030-2040 T
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 T 0.0 M 0.0 M clr at sunrise, then ovc by 0630. RW- ca 1530, then cleared again
4/22/2010 5:30 AM 0.94 0.0 M 0.0 M some very light showers ca 1700, R- w/some lightning (didn't hear thunder) around 2030. .12" as of 2215, +.48" by 0055, +.34" when ended ca 0245 based on radar
4/23/2010 5:30 AM 0.39 0.0 M 0.0 M RW- ca 0930 .08"; R- 1845-2200 .21"; R- 0400ff .10" as of 0530
4/24/2010 7:00 AM 1.07 0.5 M 0.0 M Fri 0530-1000 +.28"; R-ES-B 1210, SE ca1330 +.72"/0.5"; RWU ca 1800-1900 .02"; RWU pre-dawn .05"
4/25/2010 7:00 AM 0.00 0.0 M 0.0 M
4/26/2010 7:00 AM 0.16 0.9 M 0.5 M R-- 1615-1730, then R- until S- Bca2130 .10" in rain. SE ca 0400 & mo clr by 0500
4/27/2010 7:00 AM 0.00 0.0 M 0.0 M
4/28/2010 7:00 AM 0.00 0.0 M 0.0 M
4/29/2010 5:30 AM 0.11 0.1 M T M R- Bca2300; S- ca0445
4/30/2010 7:00 AM 0.28 1.4 M 0.0 M S- Eca0830, snow melted by late morning, and skies cleared partially in the afternoon
5/1/2010 7:00 AM T T M 0.0 M SPW- ca 1315
5/2/2010 7:00 AM 0.00 0.0 M 0.0 M
5/3/2010 7:00 AM 0.00 0.0 M 0.0 M
5/4/2010 7:00 AM 0.00 0.0 M 0.0 M
5/5/2010 7:00 AM 0.00 0.0 M 0.0 M
5/6/2010 7:00 AM 0.00 0.0 M 0.0 M
5/7/2010 7:00 AM 0.08 0.3 M T M RW- ca 1400 & 1630 .04"; S- ca 2330-0230 0.3"/.04"
5/8/2010 7:00 AM 0.00 0.0 M 0.0 M
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 1.12 2.7 M 2.5 M RW- Bca1230, R- 1645-1930, R-S- (.70"/0.1" 2200), S- 2215-0500; little accum after ca 0230
5/13/2010 7:00 AM 0.06 T M T M RW-- during day, RW-/SW- evening .05"; RW--/SW-- over night .01"
5/14/2010 7:00 AM 0.18 0.0 M 0.0 M RW- eve .12" as of 2230, RE ca 0130
5/15/2010 7:00 AM 0.27 0.0 M 0.0 M some RW-- aftn, then R- 1630-2030 .21" more showers probably before around midnight +.06"
5/16/2010 7:00 AM 0.02 0.0 M 0.0 M RW- ca 1830
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 0.03 0.0 M 0.0 M thunder W ca 1830; TRW- roughly 1930-2000
5/20/2010 7:00 AM T 0.0 M 0.0 M RW-- early aftn
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 very windy early aftn - many leaves and twigs down; some larger branches in the neighborhood
5/26/2010 7:00 AM 0.03 0.0 M 0.0 M a few showers 2108 to approx 2215 MDT
5/27/2010 7:00 AM 0.20 0.0 M 0.0 M TRW-- 1955-2010; TRW/A 2041-2115 - see last night's hail report
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 0.14 0.0 M 0.0 M TRW- 1825-2015
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 T 0.0 M 0.0 M a few drops ca 1900
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 TRW- ca 1600
6/10/2010 7:00 AM 0.00 0.0 M 0.0 M
6/11/2010 7:00 AM 0.24 0.0 M 0.0 M guest observer - precip time/nature not recorded except prior to ca 20L
6/12/2010 7:00 AM 0.79 0.0 M 0.0 M TRWU aftn .08" TRW- 1825-1840 .05"; R-/TR- (lightning 0100-0115) 2130ff .30" by 01L, +.36" 0700
6/13/2010 7:00 AM 0.48 0.0 M 0.0 M RE ca 1700 .14" R- 2130ff .08" 0030 +.26" 0700
6/14/2010 7:00 AM 0.40 0.0 M 0.0 M RE ca 0830 (a few hundredths at best), ovc, RB ca 1630, E ca 2130
6/15/2010 7:00 AM 0.01 0.0 M 0.0 M TRW- ca 1600
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 0.00 0.0 M 0.0 M
6/21/2010 7:00 AM T 0.0 M 0.0 M RWU late aftn
6/22/2010 7:00 AM 0.21 0.0 M 0.0 M TRW/+ approx 1455-1520 w/A 1505-1510 or so. Stones probably 1/2-5/8". Lots of leaf litter but no significant damage.
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 0.12 0.0 M 0.0 M thunder 1555, R-- 1605ff R- roughly 1700-1800
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 0.0 M
7/2/2010 7:00 AM 0.00 0.0 M 0.0 M
7/3/2010 7:00 AM 0.05 0.0 M 0.0 M brief TRW- ca 1400 .05" R-- 2130-2150 T
7/4/2010 7:00 AM 0.05 0.0 M 0.0 M TRW- 1525-1610 .05"; RW-- w/gusty winds ca 1800
7/5/2010 7:00 AM 0.81 0.0 M 0.0 M TRW-/TRWU 1850-2340 (wasn't home during most of the event)
7/6/2010 7:00 AM 0.00 0.0 M 0.0 M
7/7/2010 7:00 AM 0.09 0.0 M 0.0 M FROPA 1845 R- approx 2330-0100
7/8/2010 7:00 AM 0.14 0.0 M 0.0 M R-L- 0730-1930; RWU ca 0100
7/9/2010 7:00 AM 0.02 0.0 M 0.0 M mid-aftn TRW-
7/10/2010 7:00 AM 0.00 0.0 M 0.0 M
7/11/2010 7:00 AM 0.00 0.0 M 0.0 M
7/12/2010 7:00 AM T 0.0 M 0.0 M RW- 1945-1950 w/gorgeous full double rainbow
7/13/2010 7:00 AM 0.00 0.0 M 0.0 M
7/14/2010 7:00 AM T 0.0 M 0.0 M RW-- 1715 and 1745
7/15/2010 7:00 AM 0.03 0.0 M 0.0 M TRW- 1815-1845 (.03"); RW-- 1945
7/16/2010 7:00 AM 0.00 0.0 M 0.0 M
7/17/2010 7:00 AM 0.00 0.0 M 0.0 M
7/18/2010 7:00 AM 0.00 0.0 M 0.0 M
7/19/2010 7:00 AM T 0.0 M 0.0 M TRWU ca 1500
7/20/2010 7:00 AM 0.01 0.0 M 0.0 M TRW- late aftn
7/21/2010 7:00 AM T 0.0 M 0.0 M a few TRW-- 1615-1915
7/22/2010 7:00 AM 0.38 0.0 M 0.0 M TRW 1515-1550
7/23/2010 7:00 AM 0.00 0.0 M 0.0 M
7/24/2010 7:00 AM 0.00 0.0 M 0.0 M
7/25/2010 7:00 AM 0.00 0.0 M 0.0 M
7/26/2010 7:00 AM 0.00 0.0 M 0.0 M
7/27/2010 7:00 AM 0.00 0.0 M 0.0 M
7/28/2010 7:00 AM 0.05 0.0 M 0.0 M "evening showers" according to sub
7/29/2010 7:00 AM 0.31 0.0 M 0.0 M "p.m. rain" according to sub
7/30/2010 7:00 AM 0.02 0.0 M 0.0 M "evening shower" according to sub
7/31/2010 7:00 AM 0.01 0.0 M 0.0 M
8/1/2010 7:00 AM 0.00 0.0 M 0.0 M
8/2/2010 7:00 AM 0.01 0.0 M 0.0 M a couple of RW- late aftn/eve
8/3/2010 7:00 AM 0.03 0.0 M 0.0 M a few RW- late aftn/early eve; most accum roughly 1700-1730
8/4/2010 7:00 AM T 0.0 M 0.0 M a few drops mid-evening, a light shower ca 2320; a few drops also at 0540
8/5/2010 7:00 AM T 0.0 M 0.0 M a couple of TRW- late aftn, early eve
8/6/2010 7:00 AM 0.00 0.0 M 0.0 M
8/7/2010 7:00 AM 0.07 0.0 M 0.0 M rain late aftn
8/8/2010 7:00 AM 0.03 0.0 M 0.0 M RW- early eve .01", RWU overnight .02"
8/9/2010 7:00 AM 0.00 0.0 M 0.0 M
8/10/2010 7:00 AM 0.09 0.0 M 0.0 M TRW- late aftn/early eve
8/11/2010 7:00 AM 0.00 0.0 M 0.0 M
8/12/2010 7:00 AM 0.00 0.0 M 0.0 M
8/13/2010 7:00 AM T 0.0 M 0.0 M RW-- mid-aftn
8/14/2010 7:00 AM 0.00 0.0 M 0.0 M
8/15/2010 7:00 AM 0.00 0.0 M 0.0 M
8/16/2010 7:00 AM 0.00 0.0 M 0.0 M thunder NE early eve, then ltg E, but rain passed to our east
8/17/2010 7:00 AM 0.92 0.0 M 0.0 M TRW+ 1750-1810, then RW- ca 1830. Probably .90" fell in less than 20 min.
8/18/2010 7:00 AM 0.00 0.0 M 0.0 M
8/19/2010 7:00 AM 0.00 0.0 M 0.0 M
8/20/2010 7:00 AM 0.18 0.0 M 0.0 M TRW ca 1630, with additional trace showers until about 2030. Thunder west, then ltg south 1950-2030.
8/21/2010 7:00 AM 0.00 0.0 M 0.0 M
8/22/2010 7:00 AM 0.00 0.0 M 0.0 M
8/23/2010 7:00 AM 0.00 0.0 M 0.0 M
8/24/2010 5:30 AM 0.19 0.0 M 0.0 M two or three showers 1340-1700 .14"; RW- approx 0430ff - still raining when measured at 0530
8/25/2010 7:00 AM 0.08 0.0 M 0.0 M RE ca 0800 (accum since yesterday's 0530 measurement)
8/26/2010 7:00 AM 0.00 0.0 M 0.0 M
8/27/2010 7:00 AM 0.00 0.0 M 0.0 M
8/28/2010 7:00 AM 0.00 0.0 M 0.0 M
8/29/2010 7:00 AM 0.00 0.0 M 0.0 M
8/30/2010 7:00 AM 0.00 0.0 M 0.0 M
8/31/2010 7:00 AM 0.01 0.0 M 0.0 M TRWU ca 1245
9/1/2010 7:00 AM 0.00 0.0 M 0.0 M
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 clear but for smoke from 4Mile fire ~15WNW
9/8/2010 7:00 AM 0.00 0.0 M 0.0 M
9/9/2010 7:00 AM 0.12 0.0 M 0.0 M RW- late aftn/early eve
9/10/2010 7:00 AM 0.00 0.0 M 0.0 M quite windy 2030-0000
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 T 0.0 M 0.0 M some early morning drizzle
9/19/2010 7:00 AM 0.01 0.0 M 0.0 M .01 accum before 0830; LW- E ca 1400, then cleared quickly at about 1530
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 0.09 0.0 M 0.0 M TRW-- 1905; TRW- 2130-2145 .06"; TRW- 2217-2225 .03". A couple nearby lightning strikes with 2130 storm.
9/23/2010 7:00 AM 0.06 0.0 M 0.0 M showers, mostly afternoon
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
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
9/30/2010 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
5/26/2010 8:41 PM Initial fall 3 min of 1/4" opaque hail. After a couple minutes lull, rather heavy fall of 1/2" opaque stones, mostly covered surface with considerable leaf fall. Last couple of minutes, several stones up to 1.25" with opaque center surrounded by clear ice. Largest 1.5" stones aggregates of smaller stones embedded in clear ice. 1 1/2" Ping Pong Ball Size 3/8" 1/4" Pea Size Hard|Clear Ice|White Ice 13 1min minor leaf damage Intermittent False Same time as rain After smaller hail 10-20