Station Overview Station Location
Station Number CO-BO-22 Latitude 40.1869
Station Name Allens Park 1.5 ESE Longitude -105.5002
County Boulder Elevation (ft) 8455



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 10 1.43 1.96 31 1.17 29 0.79 2 1 8 3 0.6 2 1
Nov 10 1.56 0.60 30 0.41 26 0.19 4 2 6 6 5.1 6 16
Dec 10 1.32 1.35 31 1.35 31 0.00 0 0 6 16 11.5 6 22
Jan 11 1.25 0.60 31 0.60 31 0.00 0 0 6 6 10.0 5 31
Feb 11 1.25 1.71 28 1.71 28 0.00 0 0 11 5 23.0 11 28
March 11 2.43 1.18 31 1.18 31 0.00 0 0 9 9 12.5 7 31
April 11 2.96 3.78 30 3.78 30 0.00 0 0 13 8 34.5 9 18
May 11 2.77 3.99 31 3.99 31 0.00 0 0 12 3 25.5 5 8
June 11 1.93 1.56 30 1.56 30 0.00 0 0 5 5 0.0 0 0
July 11 2.29 4.77 31 4.77 31 0.00 0 0 11 3 0.0 0 0
Aug 11 2.38 1.04 31 1.04 31 0.00 0 0 11 2 0.0 0 0
Sept 11 1.82 2.14 30 2.14 30 0.00 0 0 5 2 0.0 0 0
Water Year Totals: 23.39" 24.68" 365 days 23.70" 359 0.98" 6 days 3 103 days 68 days 122.7" 51 days 155 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
10/1/2010 0.00
10/2/2010 0.00
10/3/2010 0.00
10/4/2010 0.00
10/5/2010 0.00
10/6/2010 0.03
10/7/2010 0.00
10/8/2010 0.04
10/9/2010 0.01
10/10/2010 0.00
10/11/2010 T
10/12/2010 0.59
10/13/2010 0.00
10/14/2010 0.00
10/15/2010 0.00
10/16/2010 0.00
10/17/2010 0.00
10/18/2010 0.00
10/19/2010 0.25
10/20/2010 0.00
10/21/2010 0.00
10/22/2010 T
10/23/2010 0.18
10/24/2010 T
10/25/2010 **
10/26/2010 0.79
10/27/2010 0.03
10/28/2010 0.00
10/29/2010 0.00
10/30/2010 0.00
10/31/2010 0.04
11/1/2010 0.05
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.00
11/5/2010 0.00
11/6/2010 0.00
11/7/2010 0.00
11/8/2010 T
11/9/2010 T
11/10/2010 T
11/11/2010 **
11/12/2010 0.12
11/13/2010 0.00
11/14/2010 0.04
11/15/2010 T
11/16/2010 0.01
11/17/2010 0.15
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 T
11/22/2010 0.15
11/23/2010 0.01
11/24/2010 **
11/25/2010 0.07
11/26/2010 0.00
11/27/2010 0.00
11/28/2010 0.00
11/29/2010 T
11/30/2010 0.00
12/1/2010 T
12/2/2010 T
12/3/2010 T
12/4/2010 T
12/5/2010 T
12/6/2010 T
12/7/2010 0.00
12/8/2010 0.00
12/9/2010 T
12/10/2010 T
12/11/2010 0.20
12/12/2010 T
12/13/2010 0.00
12/14/2010 0.00
12/15/2010 T
12/16/2010 T
12/17/2010 0.07
12/18/2010 T
12/19/2010 T
12/20/2010 0.64
12/21/2010 0.12
12/22/2010 0.12
12/23/2010 T
12/24/2010 T
12/25/2010 0.00
12/26/2010 0.00
12/27/2010 0.00
12/28/2010 0.00
12/29/2010 0.00
12/30/2010 T
12/31/2010 0.20
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.00
1/2/2011 0.00
1/3/2011 0.00
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 T
1/7/2011 0.00
1/8/2011 0.00
1/9/2011 T
1/10/2011 0.24
1/11/2011 0.00
1/12/2011 0.00
1/13/2011 0.00
1/14/2011 0.00
1/15/2011 0.00
1/16/2011 0.00
1/17/2011 0.13
1/18/2011 0.03
1/19/2011 T
1/20/2011 0.16
1/21/2011 T
1/22/2011 0.02
1/23/2011 0.02
1/24/2011 0.00
1/25/2011 0.00
1/26/2011 T
1/27/2011 0.00
1/28/2011 0.00
1/29/2011 0.00
1/30/2011 0.00
1/31/2011 T
2/1/2011 0.08
2/2/2011 T
2/3/2011 0.00
2/4/2011 0.16
2/5/2011 T
2/6/2011 0.31
2/7/2011 T
2/8/2011 0.29
2/9/2011 0.10
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 0.00
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 0.05
2/18/2011 0.14
2/19/2011 T
2/20/2011 0.05
2/21/2011 T
2/22/2011 0.00
2/23/2011 0.00
2/24/2011 0.03
2/25/2011 0.24
2/26/2011 0.26
2/27/2011 0.00
2/28/2011 0.00
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 T
3/4/2011 0.06
3/5/2011 T
3/6/2011 0.00
3/7/2011 0.16
3/8/2011 T
3/9/2011 T
3/10/2011 0.00
3/11/2011 0.00
3/12/2011 0.00
3/13/2011 0.35
3/14/2011 0.00
3/15/2011 0.00
3/16/2011 0.00
3/17/2011 0.02
3/18/2011 0.26
3/19/2011 0.00
3/20/2011 0.00
3/21/2011 0.00
3/22/2011 0.09
3/23/2011 0.02
3/24/2011 0.00
3/25/2011 T
3/26/2011 T
3/27/2011 T
3/28/2011 0.17
3/29/2011 0.05
3/30/2011 T
3/31/2011 T
Day of YearDaily PrcpMultiday Prcp
4/1/2011 T
4/2/2011 0.00
4/3/2011 T
4/4/2011 0.26
4/5/2011 0.00
4/6/2011 0.00
4/7/2011 0.04
4/8/2011 0.00
4/9/2011 0.00
4/10/2011 T
4/11/2011 T
4/12/2011 0.00
4/13/2011 0.00
4/14/2011 1.49
4/15/2011 0.06
4/16/2011 0.00
4/17/2011 T
4/18/2011 0.06
4/19/2011 0.24
4/20/2011 T
4/21/2011 0.47
4/22/2011 0.04
4/23/2011 0.08
4/24/2011 0.47
4/25/2011 0.43
4/26/2011 0.08
4/27/2011 T
4/28/2011 0.00
4/29/2011 T
4/30/2011 0.06
5/1/2011 0.00
5/2/2011 0.18
5/3/2011 0.00
5/4/2011 0.00
5/5/2011 0.00
5/6/2011 0.00
5/7/2011 0.00
5/8/2011 0.00
5/9/2011 0.00
5/10/2011 0.00
5/11/2011 0.34
5/12/2011 0.80
5/13/2011 0.00
5/14/2011 0.00
5/15/2011 0.20
5/16/2011 0.00
5/17/2011 0.00
5/18/2011 0.05
5/19/2011 1.49
5/20/2011 0.31
5/21/2011 T
5/22/2011 T
5/23/2011 T
5/24/2011 0.38
5/25/2011 0.04
5/26/2011 0.00
5/27/2011 0.08
5/28/2011 0.10
5/29/2011 0.02
5/30/2011 0.00
5/31/2011 0.00
6/1/2011 0.00
6/2/2011 0.00
6/3/2011 0.00
6/4/2011 0.00
6/5/2011 0.00
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 0.16
6/10/2011 0.00
6/11/2011 0.00
6/12/2011 T
6/13/2011 0.00
6/14/2011 T
6/15/2011 T
6/16/2011 0.00
6/17/2011 0.15
6/18/2011 0.02
6/19/2011 0.00
6/20/2011 1.14
6/21/2011 T
6/22/2011 0.00
6/23/2011 0.00
6/24/2011 T
6/25/2011 0.00
6/26/2011 0.00
6/27/2011 0.00
6/28/2011 0.00
6/29/2011 0.00
6/30/2011 0.09
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.31
7/2/2011 0.00
7/3/2011 0.00
7/4/2011 T
7/5/2011 0.00
7/6/2011 0.29
7/7/2011 T
7/8/2011 0.49
7/9/2011 0.00
7/10/2011 0.00
7/11/2011 0.13
7/12/2011 0.07
7/13/2011 1.91
7/14/2011 0.00
7/15/2011 0.00
7/16/2011 0.13
7/17/2011 0.13
7/18/2011 1.06
7/19/2011 0.11
7/20/2011 T
7/21/2011 0.00
7/22/2011 0.00
7/23/2011 0.00
7/24/2011 0.00
7/25/2011 0.00
7/26/2011 0.00
7/27/2011 0.00
7/28/2011 0.14
7/29/2011 0.00
7/30/2011 0.00
7/31/2011 0.00
8/1/2011 0.15
8/2/2011 0.00
8/3/2011 0.14
8/4/2011 0.02
8/5/2011 0.06
8/6/2011 0.00
8/7/2011 0.00
8/8/2011 0.00
8/9/2011 0.00
8/10/2011 0.00
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 0.00
8/14/2011 0.00
8/15/2011 0.00
8/16/2011 0.00
8/17/2011 T
8/18/2011 0.00
8/19/2011 0.00
8/20/2011 0.17
8/21/2011 T
8/22/2011 0.10
8/23/2011 0.00
8/24/2011 0.00
8/25/2011 0.01
8/26/2011 0.07
8/27/2011 0.01
8/28/2011 0.15
8/29/2011 0.16
8/30/2011 0.00
8/31/2011 0.00
9/1/2011 0.00
9/2/2011 0.00
9/3/2011 T
9/4/2011 0.00
9/5/2011 0.00
9/6/2011 0.00
9/7/2011 0.62
9/8/2011 0.48
9/9/2011 0.00
9/10/2011 0.00
9/11/2011 0.00
9/12/2011 0.00
9/13/2011 0.00
9/14/2011 T
9/15/2011 0.85
9/16/2011 0.00
9/17/2011 0.00
9/18/2011 0.12
9/19/2011 0.00
9/20/2011 0.00
9/21/2011 0.00
9/22/2011 0.07
9/23/2011 0.00
9/24/2011 0.00
9/25/2011 0.00
9/26/2011 0.00
9/27/2011 0.00
9/28/2011 0.00
9/29/2011 0.00
9/30/2011 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 7:00 AM 0.00 0.0 M M M
10/2/2010 7:00 AM 0.00 0.0 M M M
10/3/2010 7:00 AM 0.00 0.0 M M M
10/4/2010 7:00 AM 0.00 0.0 M M M
10/5/2010 7:00 AM 0.00 0.0 M M M
10/6/2010 7:00 AM 0.03 M M M M Thunderstorms 11:00 PM last night.
10/7/2010 7:00 AM 0.00 0.0 M M M
10/8/2010 7:00 AM 0.04 M M M M Thunderstorm about 9:15 PM last night leave all precip. 2 - 3 inches of snow above timberline overnight.
10/9/2010 7:00 AM 0.01 T M 0.0 M Few flakes mixed with rain.
10/10/2010 7:00 AM 0.00 0.0 M 0.0 M
10/11/2010 7:00 AM T 0.0 M 0.0 M
10/12/2010 1:00 PM 0.59 0.5 M T M Please note that this reading was taken later in the day, but all precipitation was over by about 9:00 AM
10/13/2010 7:00 AM 0.00 0.0 M 0.0 M Please note that yesterday's reading was made at 1:00 PM, after all precipitation had ended.
10/14/2010 7:00 AM 0.00 0.0 M 0.0 M
10/15/2010 7:00 AM 0.00 0.0 M 0.0 M
10/16/2010 7:00 AM 0.00 0.0 M 0.0 M
10/17/2010 7:00 AM 0.00 0.0 M 0.0 M
10/18/2010 7:00 AM 0.00 0.0 M 0.0 M
10/19/2010 7:00 AM 0.25 0.1 M T M
10/20/2010 7:00 AM 0.00 0.0 M 0.0 M
10/21/2010 7:00 AM 0.00 0.0 M 0.0 M
10/22/2010 7:00 AM T M M 0.0 M
10/23/2010 7:00 AM 0.18 M M 0.0 M Light, steady rain afternoon of the 22nd.
10/24/2010 7:00 AM T M M 0.0 M Just a few drops of downslope rain.
10/27/2010 7:00 AM 0.03 M M 0.5 M Downslope squalls and flurries.
10/28/2010 7:00 AM 0.00 0.0 T 0.0 M
10/29/2010 7:00 AM 0.00 0.0 M T M
10/30/2010 7:00 AM 0.00 0.0 M 0.0 M
10/31/2010 7:00 AM 0.04 M M 0.0 M
11/1/2010 7:00 AM 0.05 0.5 M 0.5 M
11/2/2010 7:00 AM 0.00 0.0 M 0.0 M
11/3/2010 7:00 AM 0.00 0.0 M 0.0 M
11/4/2010 7:00 AM 0.00 0.0 M 0.0 M
11/5/2010 7:00 AM 0.00 0.0 M 0.0 M
11/6/2010 7:00 AM 0.00 0.0 M 0.0 M
11/7/2010 7:00 AM 0.00 0.0 M 0.0 M
11/8/2010 7:00 AM T 0.0 M 0.0 M Downslope squall leaves trace rain afternoon of the 7th.
11/9/2010 7:00 AM T T M T M A little AM graupel.
11/10/2010 7:00 AM T T M T M
11/13/2010 7:00 AM 0.00 0.0 M T M
11/14/2010 7:00 AM 0.04 0.5 M 2.0 M
11/15/2010 7:00 AM T T M 2.0 M
11/16/2010 7:00 AM 0.01 0.1 M 2.0 M
11/17/2010 7:00 AM 0.15 2.4 M 3.0 M Major downslope storm.
11/18/2010 7:00 AM 0.00 0.0 M 2.0 M
11/19/2010 7:00 AM 0.00 0.0 M 2.0 M
11/20/2010 7:00 AM 0.00 0.0 M 2.0 M
11/21/2010 7:00 AM T T M 1.5 M Few downslope flakes overnight.
11/22/2010 7:00 AM 0.15 1.5 M 2.5 M
11/23/2010 7:00 AM 0.01 0.1 M 2.0 M
11/26/2010 7:00 AM 0.00 0.0 M 2.0 M
11/27/2010 7:00 AM 0.00 0.0 M 2.0 M
11/28/2010 7:00 AM 0.00 0.0 M 1.5 M
11/29/2010 7:00 AM T T M 1.5 M
11/30/2010 7:00 AM 0.00 0.0 M 1.5 M
12/1/2010 7:00 AM T T M 1.5 M
12/2/2010 7:00 AM T T M 1.5 M
12/3/2010 7:00 AM T T M 1.5 M
12/4/2010 7:00 AM T T M 0.5 M
12/5/2010 7:00 AM T T M 0.5 M
12/6/2010 7:00 AM T T M T M
12/7/2010 7:00 AM 0.00 0.0 M T M
12/8/2010 7:00 AM 0.00 0.0 M T M
12/9/2010 7:00 AM T T M T M Few downslope flakes.
12/10/2010 7:00 AM T T M T M Some downslope flakes.
12/11/2010 7:00 AM 0.20 1.0 M 0.5 M Downslope storm.
12/12/2010 7:00 AM T T M 0.5 M
12/13/2010 7:00 AM 0.00 0.0 M T M
12/14/2010 7:00 AM 0.00 0.0 M T M
12/15/2010 7:00 AM T T M T M Downslope flakes toward morning.
12/16/2010 7:00 AM T T M T M A skiff of snow on the ground, less than a tenth of an inch.
12/17/2010 7:00 AM 0.07 3.5 M 3.0 M Places only a few miles away had little or no new snow. Snow very dry.
12/18/2010 7:00 AM T T M 3.0 M Few downslope flakes.
12/19/2010 7:00 AM T T M 1.0 M Few downslope flakes.
12/20/2010 2:00 PM 0.64 1.0 M 2.0 M Most precipitation had fallen by 7:00 AM. Mostly rain and wet, melting snow. Very unusual in December. More snow at higher elevations, rain below 8,000 feet.
12/21/2010 7:00 AM 0.12 1.5 M 2.0 M
12/22/2010 7:00 AM 0.12 1.5 M 3.0 M
12/23/2010 7:00 AM T T M 3.0 M Downslope flakes and maybe a little rain!
12/24/2010 7:00 AM T T M 3.0 M Few wet flakes.
12/25/2010 7:00 AM 0.00 0.0 M 2.5 M
12/26/2010 7:00 AM 0.00 0.0 M 2.0 M
12/27/2010 7:00 AM 0.00 0.0 M 2.0 M
12/28/2010 7:00 AM 0.00 0.0 M 2.0 M
12/29/2010 7:00 AM 0.00 0.0 M 1.0 M
12/30/2010 7:00 AM T T M 1.0 M Few flakes around reading time.
12/31/2010 7:00 AM 0.20 3.0 M 4.0 M
1/1/2011 7:00 AM 0.00 0.0 M 4.0 M
1/2/2011 7:00 AM 0.00 0.0 M 4.0 M
1/3/2011 7:00 AM 0.00 0.0 M 3.5 M
1/4/2011 7:00 AM 0.00 0.0 M 3.0 M
1/5/2011 7:00 AM 0.00 0.0 M 3.0 M
1/6/2011 7:00 AM T T M 2.0 M Few downslope flakes.
1/7/2011 7:00 AM 0.00 0.0 M 2.0 M
1/8/2011 7:00 AM 0.00 0.0 M 2.0 M
1/9/2011 7:00 AM T T M 2.0 M Light snow began toward dawn.
1/10/2011 7:00 AM 0.24 7.0 M 7.0 M
1/11/2011 7:00 AM 0.00 0.0 M 6.5 M
1/12/2011 7:00 AM 0.00 0.0 M 6.0 M
1/13/2011 7:00 AM 0.00 0.0 M 6.0 M
1/14/2011 7:00 AM 0.00 0.0 M 5.5 M
1/15/2011 7:00 AM 0.00 0.0 M 5.5 M
1/16/2011 7:00 AM 0.00 0.0 M 5.0 M
1/17/2011 7:00 AM 0.13 0.5 M 5.0 M Some rain, wet snow and graupel. Very windy.
1/18/2011 7:00 AM 0.03 T M 5.0 M
1/19/2011 7:00 AM T T M 5.0 M There was some measurable snow to the west and north of station.
1/20/2011 7:00 AM 0.16 2.0 M 6.5 M
1/21/2011 7:00 AM T T M 5.5 M Downslope flakes overnight. Very windy.
1/22/2011 7:00 AM 0.02 0.3 M 5.5 M Downslope snow overnight. Very windy overnight.
1/23/2011 7:00 AM 0.02 0.2 M 5.5 M
1/24/2011 7:00 AM 0.00 0.0 M 5.5 M
1/25/2011 7:00 AM 0.00 0.0 M 5.5 M
1/26/2011 7:00 AM T T M 5.5 M Very light snow overnight.
1/27/2011 7:00 AM 0.00 0.0 M 5.5 M
1/28/2011 7:00 AM 0.00 0.0 M 5.0 M
1/29/2011 7:00 AM 0.00 0.0 M 5.0 M
1/30/2011 7:00 AM 0.00 0.0 M 5.0 M
1/31/2011 7:00 AM T T M 5.0 M
2/1/2011 7:00 AM 0.08 1.5 M 6.5 M
2/2/2011 7:00 AM T T M 6.0 M Just a few flakes in the Arctic air.
2/3/2011 7:00 AM 0.00 0.0 M 6.0 M
2/4/2011 7:00 AM 0.16 2.0 M 7.0 M
2/5/2011 7:00 AM T T M 6.5 M Downslope snow overnight with wind.
2/6/2011 7:00 AM 0.31 6.0 M 11.5 M
2/7/2011 7:00 AM T T M 11.5 M Downslope flurries overnight.
2/8/2011 7:00 AM 0.29 3.5 M 14.5 M
2/9/2011 7:00 AM 0.10 0.5 M 14.0 M
2/10/2011 7:00 AM 0.00 0.0 M 13.5 M
2/11/2011 7:00 AM 0.00 0.0 M 13.0 M
2/12/2011 7:00 AM 0.00 0.0 M 13.0 M
2/13/2011 7:00 AM 0.00 0.0 M 12.0 M
2/14/2011 7:00 AM 0.00 0.0 M 11.5 M
2/15/2011 7:00 AM 0.00 0.0 M 11.5 M
2/16/2011 7:00 AM 0.00 0.0 M 11.0 M
2/17/2011 7:00 AM 0.05 0.5 M 10.0 M
2/18/2011 7:00 AM 0.14 1.0 M 10.5 M
2/19/2011 7:00 AM T T M 10.0 M Just a few flakes overnight.
2/20/2011 7:00 AM 0.05 0.5 M 11.0 M Short, intense burst of snow before dawn. Very windy.
2/21/2011 7:00 AM T T M 11.0 M Downslope flakes, no accumulation.
2/22/2011 7:00 AM 0.00 0.0 M 11.0 M
2/23/2011 7:00 AM 0.00 0.0 M 10.5 M
2/24/2011 7:00 AM 0.03 0.5 M 10.0 M
2/25/2011 7:00 AM 0.24 3.5 M 13.0 M
2/26/2011 7:00 AM 0.26 3.5 M 16.0 M
2/27/2011 7:00 AM 0.00 0.0 M 15.0 M
2/28/2011 7:00 AM 0.00 0.0 M 15.0 M
3/1/2011 7:00 AM 0.00 0.0 M 13.5 M
3/2/2011 7:00 AM 0.00 0.0 M 12.5 M
3/3/2011 7:00 AM T T M 12.5 M Downslope flakes overnight.
3/4/2011 7:00 AM 0.06 1.0 M 12.0 M
3/5/2011 7:00 AM T T M 12.0 M Some flurries.
3/6/2011 7:00 AM 0.00 0.0 M 12.0 M
3/7/2011 7:00 AM 0.16 2.0 M 14.0 M
3/8/2011 7:00 AM T T M 14.0 M
3/9/2011 7:00 AM T T M 14.0 M Some flurries.
3/10/2011 7:00 AM 0.00 0.0 M 13.0 M
3/11/2011 7:00 AM 0.00 0.0 M 11.0 M
3/12/2011 7:00 AM 0.00 0.0 M 11.0 M
3/13/2011 7:00 AM 0.35 4.0 M 15.0 M
3/14/2011 7:00 AM 0.00 0.0 M 14.0 M
3/15/2011 7:00 AM 0.00 0.0 M 13.0 M
3/16/2011 7:00 AM 0.00 0.0 M 12.0 M
3/17/2011 7:00 AM 0.02 T M 9.0 M
3/18/2011 7:00 AM 0.26 3.0 M 10.5 M
3/19/2011 7:00 AM 0.00 0.0 M 10.5 M
3/20/2011 7:00 AM 0.00 0.0 M 9.5 M
3/21/2011 7:00 AM 0.00 0.0 M 9.0 M
3/22/2011 7:00 AM 0.09 0.5 M 9.0 M Dowmslope squalls.
3/23/2011 7:00 AM 0.02 T M 9.0 M Downslope flurries.
3/24/2011 7:00 AM 0.00 0.0 M 8.0 M
3/25/2011 7:00 AM T T M 7.5 M Downslope squalls.
3/26/2011 7:00 AM T T M 7.5 M Downslope flurries.
3/27/2011 7:00 AM T T M 7.0 M
3/28/2011 7:00 AM 0.17 1.5 M 9.5 M
3/29/2011 7:00 AM 0.05 0.5 M 9.5 M
3/30/2011 7:00 AM T T M 9.0 M Few downslope flakes.
3/31/2011 7:00 AM T T M 9.0 M Downslope flakes.
4/1/2011 7:00 AM T T M 7.0 M Few downslope flakes.
4/2/2011 7:00 AM 0.00 0.0 M 7.0 M Snow cover is quite patchy, but still 7 inches at the snow gauge site.
4/3/2011 7:00 AM T 0.0 M 5.5 M Few drops of rain.
4/4/2011 7:00 AM 0.26 1.0 M 4.5 M Snow partly melted while falling.
4/5/2011 7:00 AM 0.00 0.0 M 4.5 M Snow cover is very patchy in area wround station.
4/6/2011 7:00 AM 0.00 0.0 M 4.0 M Snow cover very patchy, but still 4 inches at the snowgauge.
4/7/2011 7:00 AM 0.04 T M T M Snow melted as it fell. No accumulation.
4/8/2011 7:00 AM 0.00 0.0 M T M Snow very patchy in area.
4/9/2011 7:00 AM 0.00 0.0 M T M
4/10/2011 7:00 AM T T M 0.0 M Still numerous drifts of snow in the forests. THunderstorms north of station 9 PM last night.
4/11/2011 7:00 AM T T M 0.0 M Few downslope flakes.
4/12/2011 7:00 AM 0.00 0.0 M 0.0 M
4/13/2011 7:00 AM 0.00 0.0 M 0.0 M
4/14/2011 7:00 AM 1.49 15.0 M 12.0 M
4/15/2011 7:00 AM 0.06 1.0 M 9.0 M
4/16/2011 7:00 AM 0.00 0.0 M 7.0 M
4/17/2011 7:00 AM T T M 6.5 M Few downslope drops and flakes.
4/18/2011 7:00 AM 0.06 T M T M
4/19/2011 7:00 AM 0.24 T M 0.0 M Rain and wet snow.
4/20/2011 7:00 AM T T M 0.0 M Downslope flurries overnight.
4/21/2011 7:00 AM 0.47 2.0 1.00 M M Very wet snow melting as it fell.
4/22/2011 7:00 AM 0.04 1.0 M 1.0 M Downmslope snow overnight.
4/23/2011 7:00 AM 0.08 2.0 M 3.0 M
4/24/2011 7:00 AM 0.47 7.0 M 8.0 M Wet snow overnight.
4/25/2011 7:00 AM 0.43 5.0 M 10.0 M
4/26/2011 7:00 AM 0.08 0.5 M 8.0 M
4/27/2011 7:00 AM T T M 7.0 M Downslope flurries, only scattered flakes.
4/28/2011 7:00 AM 0.00 0.0 M 6.0 M
4/29/2011 7:00 AM T T M 1.0 M
4/30/2011 7:00 AM 0.06 T M T M Highway 7 extremely icy this morning, closed Allenspark to Estes Park due to extreme ice conditions.
5/1/2011 7:00 AM 0.00 0.0 M 0.0 M
5/2/2011 7:00 AM 0.18 1.5 M 1.0 M
5/3/2011 7:00 AM 0.00 0.0 M 0.0 M
5/4/2011 7:00 AM 0.00 0.0 M 0.0 M
5/5/2011 7:00 AM 0.00 0.0 M 0.0 M
5/6/2011 7:00 AM 0.00 0.0 M 0.0 M Still numerous drifts and snowpatches around.
5/7/2011 7:00 AM 0.00 0.0 M 0.0 M
5/8/2011 7:00 AM 0.00 0.0 M 0.0 M
5/9/2011 7:00 AM 0.00 0.0 M 0.0 M
5/10/2011 7:00 AM 0.00 0.0 M 0.0 M
5/11/2011 7:00 AM 0.34 2.0 M 2.0 M
5/12/2011 7:00 AM 0.80 9.0 M 7.0 M
5/13/2011 7:00 AM 0.00 0.0 M 5.0 M
5/14/2011 7:00 AM 0.00 0.0 M 1.0 M
5/15/2011 7:00 AM 0.20 T M 0.0 M Drizzle, light rain and wet snow. And, yes, it was exactly two tenths.
5/16/2011 7:00 AM 0.00 0.0 M 0.0 M
5/17/2011 7:00 AM 0.00 0.0 M 0.0 M
5/18/2011 7:00 AM 0.05 0.0 M 0.0 M
5/19/2011 7:00 AM 1.49 12.0 M 8.0 M Snow partially melted as falling, hard to measure, was probably more than 12 inches.
5/20/2011 7:00 AM 0.31 1.0 M 6.0 M Most snow melted as it fell.
5/21/2011 7:00 AM T 0.0 M 2.0 M
5/22/2011 7:00 AM T 0.0 M 0.0 M
5/23/2011 7:00 AM T 0.0 M 0.0 M
5/24/2011 7:00 AM 0.38 0.0 M 0.0 M Thunder. Small, soft hail.
5/25/2011 7:00 AM 0.04 0.0 M 0.0 M Thunder near station.
5/26/2011 7:00 AM 0.00 0.0 M 0.0 M
5/27/2011 7:00 AM 0.08 T M 0.0 M Downslope rain and wet snowflakes overnight.
5/28/2011 7:00 AM 0.10 0.0 M 0.0 M Yes, it was exactly one tenth.
5/29/2011 7:00 AM 0.02 0.0 M 0.0 M
5/30/2011 7:00 AM 0.00 0.0 M 0.0 M
5/31/2011 7:00 AM 0.00 0.0 M 0.0 M
6/1/2011 7:00 AM 0.00 0.0 M 0.0 M
6/2/2011 7:00 AM 0.00 0.0 M 0.0 M
6/3/2011 7:00 AM 0.00 0.0 M 0.0 M
6/4/2011 7:00 AM 0.00 0.0 M 0.0 M
6/5/2011 7:00 AM 0.00 0.0 M 0.0 M
6/6/2011 7:00 AM 0.00 0.0 M 0.0 M
6/7/2011 7:00 AM 0.00 0.0 M 0.0 M
6/8/2011 7:00 AM 0.00 0.0 M 0.0 M
6/9/2011 7:00 AM 0.16 0.0 M 0.0 M Nocturnal thunderstorms.
6/10/2011 7:00 AM 0.00 0.0 M 0.0 M
6/11/2011 7:00 AM 0.00 0.0 M 0.0 M
6/12/2011 7:00 AM T 0.0 M 0.0 M Few drops from convective activity - one thunder heard to east.
6/13/2011 7:00 AM 0.00 0.0 M 0.0 M
6/14/2011 7:00 AM T 0.0 M 0.0 M
6/15/2011 7:00 AM T 0.0 M 0.0 M
6/16/2011 7:00 AM 0.00 0.0 M 0.0 M
6/17/2011 7:00 AM 0.15 0.0 M 0.0 M
6/18/2011 7:00 AM 0.02 0.0 M 0.0 M
6/19/2011 7:00 AM 0.00 0.0 M 0.0 M
6/20/2011 7:00 AM 1.14 0.0 M 0.0 M Out of town. Was told there was a strong thunderstorm with hail. There may have been a few wet snowflakes, but can't confirm so reported zero snow.
6/21/2011 7:00 AM T 0.0 M 0.0 M
6/22/2011 7:00 AM 0.00 0.0 M 0.0 M
6/23/2011 7:00 AM 0.00 0.0 M 0.0 M
6/24/2011 7:00 AM T 0.0 M 0.0 M Thunder to east 10:45 PM.
6/25/2011 7:00 AM 0.00 0.0 M 0.0 M No rain buts lots of pine pollen.
6/26/2011 7:00 AM 0.00 0.0 M 0.0 M
6/27/2011 7:00 AM 0.00 0.0 M 0.0 M Hot, dry and windy.
6/28/2011 7:00 AM 0.00 0.0 M 0.0 M
6/29/2011 7:00 AM 0.00 0.0 M 0.0 M
6/30/2011 7:00 AM 0.09 0.0 M 0.0 M Thundershower in afternoon, another shower about 9:30 PM.
7/1/2011 7:00 AM 0.31 0.0 M 0.0 M Active thunderstorm at 2PM leaves 0.17" and another shower around 5 PM leaves 0.14".
7/2/2011 7:00 AM 0.00 0.0 M 0.0 M
7/3/2011 7:00 AM 0.00 0.0 M 0.0 M
7/4/2011 7:00 AM T 0.0 M 0.0 M Thunder and a few drops.
7/5/2011 7:00 AM 0.00 0.0 M 0.0 M Very hot.
7/6/2011 7:00 AM 0.29 0.0 M 0.0 M The "monsoon" arrived on the 5th.
7/7/2011 7:00 AM T 0.0 M 0.0 M Nice thunderstorms in area, only a trace at station.
7/8/2011 7:00 AM 0.49 0.0 M 0.0 M Afternoon and evening thunderstorms.
7/9/2011 7:00 AM 0.00 0.0 M 0.0 M
7/10/2011 7:00 AM 0.00 0.0 M 0.0 M
7/11/2011 7:00 AM 0.13 0.0 M 0.0 M
7/12/2011 7:00 AM 0.07 0.0 M 0.0 M
7/13/2011 7:00 AM 1.91 0.0 M 0.0 M Big storm.
7/14/2011 7:00 AM 0.00 0.0 M 0.0 M
7/15/2011 7:00 AM 0.00 0.0 M 0.0 M
7/16/2011 7:00 AM 0.13 0.0 M 0.0 M
7/17/2011 7:00 AM 0.13 0.0 M 0.0 M
7/18/2011 7:00 AM 1.06 0.0 M 0.0 M Lots of hail. Outside floodlight broken, first time in 50 years.
7/19/2011 7:00 AM 0.11 0.0 M 0.0 M Thundershowers
7/20/2011 7:00 AM T 0.0 M 0.0 M
7/21/2011 7:00 AM 0.00 0.0 M 0.0 M
7/22/2011 7:00 AM 0.00 0.0 M 0.0 M
7/23/2011 7:00 AM 0.00 0.0 M 0.0 M
7/24/2011 7:00 AM 0.00 0.0 M 0.0 M
7/25/2011 7:00 AM 0.00 0.0 M 0.0 M
7/26/2011 7:00 AM 0.00 0.0 M 0.0 M
7/27/2011 7:00 AM 0.00 0.0 M 0.0 M
7/28/2011 7:00 AM 0.14 0.0 M 0.0 M Two thundershowers, one at 3 PM and one at 4:15 PM.
7/29/2011 7:00 AM 0.00 0.0 M 0.0 M
7/30/2011 7:00 AM 0.00 0.0 M 0.0 M
7/31/2011 7:00 AM 0.00 0.0 M 0.0 M
8/1/2011 7:00 AM 0.15 0.0 M 0.0 M Active tunderstorm, cloud to ground lightning, 5:15 PM on July 31st.
8/2/2011 7:00 AM 0.00 0.0 M M M
8/3/2011 7:00 AM 0.14 0.0 M 0.0 M
8/4/2011 7:00 AM 0.02 0.0 M 0.0 M
8/5/2011 7:00 AM 0.06 0.0 M 0.0 M
8/6/2011 7:00 AM 0.00 0.0 M 0.0 M
8/7/2011 7:00 AM 0.00 0.0 M 0.0 M
8/8/2011 7:00 AM 0.00 0.0 M 0.0 M
8/9/2011 7:00 AM 0.00 0.0 M 0.0 M
8/10/2011 7:00 AM 0.00 0.0 M 0.0 M
8/11/2011 7:00 AM 0.00 0.0 M 0.0 M
8/12/2011 7:00 AM 0.00 0.0 M 0.0 M
8/13/2011 7:00 AM 0.00 0.0 M 0.0 M
8/14/2011 7:00 AM 0.00 0.0 M 0.0 M
8/15/2011 7:00 AM 0.00 0.0 M 0.0 M
8/16/2011 7:00 AM 0.00 0.0 M 0.0 M
8/17/2011 7:00 AM T 0.0 M 0.0 M Dry squalls.
8/18/2011 7:00 AM 0.00 0.0 M 0.0 M
8/19/2011 7:00 AM 0.00 0.0 M 0.0 M
8/20/2011 7:00 AM 0.17 0.0 M 0.0 M Thundershower.
8/21/2011 7:00 AM T 0.0 M 0.0 M
8/22/2011 7:00 AM 0.10 0.0 M 0.0 M Yes, it was exactly a tenth of an inch.
8/23/2011 7:00 AM 0.00 0.0 M 0.0 M
8/24/2011 7:00 AM 0.00 0.0 M 0.0 M
8/25/2011 7:00 AM 0.01 0.0 M 0.0 M
8/26/2011 7:00 AM 0.07 0.0 M 0.0 M
8/27/2011 7:00 AM 0.01 0.0 M 0.0 M
8/28/2011 7:00 AM 0.15 0.0 M 0.0 M
8/29/2011 7:00 AM 0.16 0.0 M 0.0 M
8/30/2011 7:00 AM 0.00 0.0 M 0.0 M
8/31/2011 7:00 AM 0.00 0.0 M 0.0 M
9/1/2011 7:00 AM 0.00 0.0 M 0.0 M
9/2/2011 7:00 AM 0.00 0.0 M 0.0 M
9/3/2011 7:00 AM T 0.0 M 0.0 M
9/4/2011 7:00 AM 0.00 0.0 M 0.0 M
9/5/2011 7:00 AM 0.00 0.0 M 0.0 M
9/6/2011 7:00 AM 0.00 0.0 M 0.0 M
9/7/2011 7:00 AM 0.62 0.0 M 0.0 M Periods of rain since yesterday morning.
9/8/2011 7:00 AM 0.48 0.0 M 0.0 M Rain ended by about 3:00 PM on the 7th.
9/9/2011 7:00 AM 0.00 0.0 M 0.0 M
9/10/2011 7:00 AM 0.00 0.0 M 0.0 M
9/11/2011 7:00 AM 0.00 0.0 M 0.0 M
9/12/2011 7:00 AM 0.00 0.0 M 0.0 M
9/13/2011 7:00 AM 0.00 0.0 M 0.0 M
9/14/2011 7:00 AM T 0.0 M 0.0 M
9/15/2011 7:00 AM 0.85 0.0 M 0.0 M Nice upslope. Snow above timberline. Yes, it was exactly 0.85 inches.
9/16/2011 7:00 AM 0.00 0.0 M 0.0 M
9/17/2011 7:00 AM 0.00 0.0 M 0.0 M
9/18/2011 7:00 AM 0.12 0.0 M 0.0 M
9/19/2011 7:00 AM 0.00 0.0 M 0.0 M
9/20/2011 7:00 AM 0.00 0.0 M 0.0 M
9/21/2011 7:00 AM 0.00 0.0 M 0.0 M
9/22/2011 7:00 AM 0.07 0.0 M 0.0 M Thundershower.
9/23/2011 7:00 AM 0.00 0.0 M 0.0 M
9/24/2011 7:00 AM 0.00 0.0 M 0.0 M
9/25/2011 7:00 AM 0.00 0.0 M 0.0 M
9/26/2011 7:00 AM 0.00 0.0 M 0.0 M
9/27/2011 7:00 AM 0.00 0.0 M 0.0 M
9/28/2011 7:00 AM 0.00 0.0 M 0.0 M
9/29/2011 7:00 AM 0.00 0.0 M 0.0 M
9/30/2011 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
10/25/2010 10/26/2010 1:30 PM 2 0.79 0.5 M MOst precipitation fell as rain before 8:15 AM on the 25th, then snowflurries after that left a little more and about a half inch of snow.
11/11/2010 11/12/2010 7:00 AM 2 0.12 1.0 M 1.5 inches of new snowfall.
11/24/2010 11/25/2010 7:00 AM 2 0.07 2.5 M One inch new snow in big downslope storm. Very windy and bitter cold.



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