Station Overview Station Location
Station Number CO-SU-20 Latitude 39.6302
Station Name Dillon .75 SE Longitude -106.0433
County Summit Elevation (ft) 9200



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 1.25 0.80 30 0.80 30 0.00 0 0 11 6 6.6 11 1
Nov 09 1.06 0.30 15 0.30 15 0.00 0 0 2 2 3.1 3 0
Dec 09 1.14 0.42 19 0.42 19 0.00 0 0 4 6 7.2 6 0
Jan 10 0.85 0.42 19 0.42 19 0.00 0 0 8 3 5.3 8 0
Feb 10 1.01 0.55 12 0.55 12 0.00 0 0 9 0 9.9 9 0
March 10 1.21 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 10 1.41 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 10 1.33 0.00 6 0.00 6 0.00 0 0 0 1 0.0 0 0
June 10 1.38 1.11 30 1.11 30 0.00 0 0 7 0 1.7 1 0
July 10 1.88 1.79 29 1.79 29 0.00 0 0 10 3 0.0 0 0
Aug 10 1.79 1.77 28 1.77 28 0.00 0 0 13 1 0.0 0 0
Sept 10 1.41 0.36 30 0.36 30 0.00 0 0 3 0 0.0 0 0
Water Year Totals: 15.72" 7.52" 218 days 7.52" 218 0.00" 0 days 0 67 days 22 days 33.8" 38 days 1 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 0.04
10/2/2009 T
10/3/2009 0.00
10/4/2009
10/5/2009 0.04
10/6/2009 0.06
10/7/2009 0.00
10/8/2009 0.00
10/9/2009 0.03
10/10/2009 0.00
10/11/2009 0.00
10/12/2009 0.00
10/13/2009 0.00
10/14/2009 T
10/15/2009 0.20
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 0.06
10/22/2009 T
10/23/2009 T
10/24/2009 T
10/25/2009 0.13
10/26/2009 0.04
10/27/2009 0.00
10/28/2009 0.06
10/29/2009 T
10/30/2009 0.12
10/31/2009 0.02
11/1/2009
11/2/2009
11/3/2009
11/4/2009
11/5/2009
11/6/2009
11/7/2009
11/8/2009
11/9/2009
11/10/2009
11/11/2009
11/12/2009
11/13/2009
11/14/2009
11/15/2009 0.21
11/16/2009 0.00
11/17/2009
11/18/2009 0.00
11/19/2009 0.00
11/20/2009 0.00
11/21/2009 0.00
11/22/2009 T
11/23/2009 0.09
11/24/2009 T
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 T
12/3/2009 T
12/4/2009 0.00
12/5/2009 0.00
12/6/2009 0.00
12/7/2009 T
12/8/2009 T
12/9/2009 0.05
12/10/2009 0.00
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 0.01
12/14/2009 0.34
12/15/2009 T
12/16/2009 0.00
12/17/2009 T
12/18/2009 0.02
12/19/2009 0.00
12/20/2009
12/21/2009
12/22/2009
12/23/2009
12/24/2009
12/25/2009
12/26/2009
12/27/2009
12/28/2009
12/29/2009
12/30/2009
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010
1/9/2010
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 T
1/16/2010 0.00
1/17/2010
1/18/2010 0.05
1/19/2010 T
1/20/2010 0.04
1/21/2010 0.00
1/22/2010 0.04
1/23/2010 0.01
1/24/2010 0.09
1/25/2010 0.02
1/26/2010 T
1/27/2010 0.15
1/28/2010
1/29/2010 0.02
1/30/2010 0.00
1/31/2010
2/1/2010
2/2/2010
2/3/2010
2/4/2010
2/5/2010
2/6/2010
2/7/2010
2/8/2010
2/9/2010
2/10/2010
2/11/2010
2/12/2010
2/13/2010 0.01
2/14/2010
2/15/2010
2/16/2010 0.03
2/17/2010
2/18/2010 0.02
2/19/2010 0.07
2/20/2010 0.17
2/21/2010 0.08
2/22/2010 0.09
2/23/2010 0.00
2/24/2010 0.00
2/25/2010 0.02
2/26/2010 0.06
2/27/2010 0.00
2/28/2010
3/1/2010
3/2/2010
3/3/2010
3/4/2010
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010
3/10/2010
3/11/2010
3/12/2010
3/13/2010
3/14/2010
3/15/2010
3/16/2010
3/17/2010
3/18/2010
3/19/2010
3/20/2010
3/21/2010
3/22/2010
3/23/2010
3/24/2010
3/25/2010
3/26/2010
3/27/2010
3/28/2010
3/29/2010
3/30/2010
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010
4/3/2010
4/4/2010
4/5/2010
4/6/2010
4/7/2010
4/8/2010
4/9/2010
4/10/2010
4/11/2010
4/12/2010
4/13/2010
4/14/2010
4/15/2010
4/16/2010
4/17/2010
4/18/2010
4/19/2010
4/20/2010
4/21/2010
4/22/2010
4/23/2010
4/24/2010
4/25/2010
4/26/2010
4/27/2010
4/28/2010
4/29/2010
4/30/2010
5/1/2010
5/2/2010
5/3/2010
5/4/2010
5/5/2010
5/6/2010
5/7/2010
5/8/2010
5/9/2010
5/10/2010
5/11/2010
5/12/2010
5/13/2010
5/14/2010
5/15/2010
5/16/2010
5/17/2010
5/18/2010
5/19/2010
5/20/2010
5/21/2010
5/22/2010
5/23/2010
5/24/2010
5/25/2010 T
5/26/2010
5/27/2010 0.00
5/28/2010 0.00
5/29/2010 0.00
5/30/2010 0.00
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 0.00
6/8/2010 0.00
6/9/2010 0.01
6/10/2010 0.00
6/11/2010 0.02
6/12/2010 0.04
6/13/2010 0.71
6/14/2010 0.07
6/15/2010 0.25
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 0.00
6/22/2010 0.00
6/23/2010 0.00
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.00
6/29/2010 0.00
6/30/2010 0.01
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.03
7/2/2010 0.12
7/3/2010 0.02
7/4/2010 0.00
7/5/2010 T
7/6/2010
7/7/2010 0.00
7/8/2010 0.10
7/9/2010 0.00
7/10/2010 T
7/11/2010 0.01
7/12/2010 0.26
7/13/2010 0.00
7/14/2010 0.00
7/15/2010 0.00
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.00
7/20/2010 0.00
7/21/2010 0.32
7/22/2010 0.00
7/23/2010 0.00
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 T
7/27/2010 0.00
7/28/2010 0.09
7/29/2010 0.79
7/30/2010
7/31/2010 0.05
8/1/2010 0.00
8/2/2010 0.39
8/3/2010 0.45
8/4/2010 0.10
8/5/2010 0.11
8/6/2010 0.03
8/7/2010
8/8/2010 0.17
8/9/2010 T
8/10/2010 0.07
8/11/2010 0.00
8/12/2010 0.05
8/13/2010 0.03
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 0.00
8/17/2010 0.07
8/18/2010
8/19/2010 0.00
8/20/2010 0.03
8/21/2010 0.00
8/22/2010
8/23/2010 0.00
8/24/2010 0.00
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 0.26
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 0.10
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 0.00
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 0.02
9/22/2010 0.00
9/23/2010 0.24
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 0.04 0.4 M M M rain and snow mix
10/2/2009 7:00 AM T T M M M snow showers, no acumulation
10/3/2009 7:00 AM 0.00 0.0 M M M
10/5/2009 7:00 AM 0.04 0.3 M M M overnight light snow, minimal acululation
10/6/2009 7:00 AM 0.06 0.9 M M M
10/7/2009 7:00 AM 0.00 0.0 M M M
10/8/2009 7:00 AM 0.00 0.0 M M M
10/9/2009 7:00 AM 0.03 0.4 M M M
10/10/2009 7:00 AM 0.00 0.0 M M M
10/11/2009 7:00 AM 0.00 0.0 M M M
10/12/2009 7:00 AM 0.00 0.0 M M M
10/13/2009 7:00 AM 0.00 0.0 M M M
10/14/2009 7:00 AM T T M M M
10/15/2009 7:00 AM 0.20 0.1 M M M sleet/snow mix estimated at 0.1 in., overnight
10/16/2009 7:00 AM 0.00 0.0 M M M
10/17/2009 7:00 AM 0.00 0.0 M M M
10/18/2009 7:00 AM 0.00 0.0 M M M
10/19/2009 7:00 AM 0.00 0.0 M M M
10/20/2009 7:00 AM 0.00 0.0 M M M
10/21/2009 7:00 AM 0.06 M M M M Overnight rain and freezing rain, no accumulation
10/22/2009 7:00 AM T T M M M occasional day time snow fluries, no acumulation
10/23/2009 7:00 AM T 0.1 M M M overnight brief snow showers
10/24/2009 7:00 AM T T M M M
10/25/2009 7:00 AM 0.13 1.5 M M M overnight snow with freezing streets
10/26/2009 7:00 AM 0.04 0.4 M 2.0 M
10/27/2009 7:00 AM 0.00 0.0 M M M
10/28/2009 7:00 AM 0.06 0.5 M M M blowing snow
10/29/2009 7:00 AM T T M M M occasional fluries only
10/30/2009 7:00 AM 0.12 1.5 M M M
10/31/2009 7:00 AM 0.02 0.5 M M M
11/15/2009 7:00 AM 0.21 2.0 M M M
11/16/2009 7:00 AM 0.00 0.0 M M M
11/18/2009 7:00 AM 0.00 0.0 M M M
11/19/2009 7:00 AM 0.00 0.0 M M M
11/20/2009 7:00 AM 0.00 0.0 M M M
11/21/2009 7:00 AM 0.00 0.0 M M M
11/22/2009 7:00 AM T 0.1 M M M Overnight brief snow shower
11/23/2009 7:00 AM 0.09 1.0 M M M
11/24/2009 7:00 AM T T M M M
11/25/2009 7:00 AM 0.00 0.0 M M M
11/26/2009 7:00 AM 0.00 0.0 M M M
11/27/2009 7:00 AM 0.00 0.0 M M M
11/28/2009 7:00 AM 0.00 0.0 M M M
11/29/2009 7:00 AM 0.00 0.0 M M M
11/30/2009 7:00 AM 0.00 0.0 M M M
12/1/2009 7:00 AM 0.00 0.0 M M M
12/2/2009 7:00 AM T 0.1 M M M
12/3/2009 7:00 AM T T M M M What lite snow we had blew way, did not accumulate on flat surfaces
12/4/2009 7:00 AM 0.00 0.0 M M M
12/5/2009 7:00 AM 0.00 0.0 M M M
12/6/2009 7:00 AM 0.00 0.0 M M M
12/7/2009 7:00 AM T 0.1 M M M
12/8/2009 7:00 AM T T M M M
12/9/2009 7:00 AM 0.05 1.0 M M M
12/10/2009 7:00 AM 0.00 0.0 M M M
12/11/2009 7:00 AM 0.00 0.0 M M M
12/12/2009 7:00 AM 0.00 0.0 M M M
12/13/2009 7:00 AM 0.01 0.1 M M M
12/14/2009 7:00 AM 0.34 5.5 M M M
12/15/2009 7:00 AM T T M M M
12/16/2009 7:00 AM 0.00 0.0 M M M
12/17/2009 7:00 AM T T M M M
12/18/2009 7:00 AM 0.02 0.4 M M M
12/19/2009 7:00 AM 0.00 0.0 M M M
1/10/2010 7:00 AM 0.00 0.0 M M M
1/11/2010 7:00 AM 0.00 0.0 M M M
1/12/2010 7:00 AM 0.00 0.0 M M M
1/13/2010 7:00 AM 0.00 0.0 M M M
1/14/2010 7:00 AM 0.00 0.0 M M M
1/15/2010 7:00 AM T T M M M
1/16/2010 7:00 AM 0.00 0.0 M M M
1/18/2010 7:00 AM 0.05 0.5 M M M
1/19/2010 7:00 AM T T M M M
1/20/2010 7:00 AM 0.04 0.5 M M M
1/21/2010 7:00 AM 0.00 0.0 M M M
1/22/2010 7:00 AM 0.04 0.5 M M M
1/23/2010 7:00 AM 0.01 0.1 M M M
1/24/2010 7:00 AM 0.09 1.0 M M M
1/25/2010 7:00 AM 0.02 0.4 M M M Blowing and drifting snow, difficult to acurately measure.
1/26/2010 7:00 AM T T M M M
1/27/2010 7:00 AM 0.15 2.0 M M M
1/29/2010 7:00 AM 0.02 0.3 M M M
1/30/2010 7:00 AM 0.00 0.0 M M M
2/13/2010 7:00 AM 0.01 0.3 M M M
2/16/2010 7:00 AM 0.03 2.8 M M M
2/18/2010 7:00 AM 0.02 0.2 M M M
2/19/2010 7:00 AM 0.07 0.9 M M M
2/20/2010 7:00 AM 0.17 2.0 M M M
2/21/2010 7:00 AM 0.08 0.9 M M M
2/22/2010 7:00 AM 0.09 0.9 M M M
2/23/2010 7:00 AM 0.00 0.0 M M M
2/24/2010 7:00 AM 0.00 0.0 M M M
2/25/2010 7:00 AM 0.02 0.5 M M M
2/26/2010 7:00 AM 0.06 1.4 M M M
2/27/2010 7:00 AM 0.00 0.0 M M M
5/25/2010 7:00 AM T T M M M Scattered brief snow showers, no accululation
5/27/2010 7:00 AM 0.00 0.0 M M M
5/28/2010 7:00 AM 0.00 0.0 M M M
5/29/2010 7:00 AM 0.00 0.0 M M M
5/30/2010 7:00 AM 0.00 0.0 M M M
5/31/2010 7:00 AM 0.00 0.0 M M M
6/1/2010 7:00 AM 0.00 0.0 M M M
6/2/2010 7:00 AM 0.00 0.0 M M M
6/3/2010 7:00 AM 0.00 0.0 M M M
6/4/2010 7:00 AM 0.00 0.0 M M M
6/5/2010 7:00 AM 0.00 0.0 M M M
6/6/2010 7:00 AM 0.00 0.0 M M M
6/7/2010 7:00 AM 0.00 0.0 M M M
6/8/2010 7:00 AM 0.00 0.0 M M M
6/9/2010 7:00 AM 0.01 M M M M
6/10/2010 7:00 AM 0.00 0.0 M M M
6/11/2010 7:00 AM 0.02 M M M M
6/12/2010 7:00 AM 0.04 M M M M
6/13/2010 7:20 AM 0.71 1.7 M M M overnite rain and snow mix, rain during day
6/14/2010 7:00 AM 0.07 M M M M occasional light small hail
6/15/2010 7:00 AM 0.25 M M M M
6/16/2010 7:00 AM 0.00 0.0 M M M
6/17/2010 7:00 AM 0.00 0.0 M M M
6/18/2010 7:00 AM 0.00 0.0 M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.00 0.0 M M M
6/22/2010 7:00 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.00 0.0 M M M
6/24/2010 7:00 AM 0.00 0.0 M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 7:00 AM 0.00 0.0 M M M
6/29/2010 7:00 AM 0.00 0.0 M M M
6/30/2010 7:00 AM 0.01 M M M M
7/1/2010 7:00 AM 0.03 M M M M
7/2/2010 7:00 AM 0.12 M M M M
7/3/2010 7:00 AM 0.02 M M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM T M M M M
7/7/2010 7:00 AM 0.00 0.0 M M M
7/8/2010 7:00 AM 0.10 M M M M
7/9/2010 7:00 AM 0.00 0.0 M M M
7/10/2010 7:00 AM T M M M M
7/11/2010 7:00 AM 0.01 M M M M
7/12/2010 7:00 AM 0.26 M M M M
7/13/2010 7:00 AM 0.00 0.0 M M M
7/14/2010 7:00 AM 0.00 0.0 M M M
7/15/2010 7:00 AM 0.00 0.0 M M M
7/16/2010 7:00 AM 0.00 0.0 M M M
7/17/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M
7/19/2010 7:00 AM 0.00 0.0 M M M
7/20/2010 7:00 AM 0.00 0.0 M M M
7/21/2010 7:00 AM 0.32 M M M M
7/22/2010 7:00 AM 0.00 0.0 M M M
7/23/2010 7:00 AM 0.00 0.0 M M M
7/24/2010 7:00 AM 0.00 0.0 M M M
7/25/2010 7:00 AM 0.00 0.0 M M M
7/26/2010 7:00 AM T M M M M
7/27/2010 7:00 AM 0.00 0.0 M M M
7/28/2010 7:00 AM 0.09 M M M M
7/29/2010 7:00 AM 0.79 M M M M
7/31/2010 7:00 AM 0.05 M M M M
8/1/2010 7:00 AM 0.00 0.0 M M M
8/2/2010 7:00 AM 0.39 M M M M
8/3/2010 7:00 AM 0.45 M M M M
8/4/2010 7:00 AM 0.10 M M M M
8/5/2010 7:00 AM 0.11 M M M M
8/6/2010 7:00 AM 0.03 M M M M
8/8/2010 7:00 AM 0.17 M M M M
8/9/2010 7:00 AM T M M M M
8/10/2010 7:00 AM 0.07 M M M M
8/11/2010 7:00 AM 0.00 0.0 M M M
8/12/2010 7:00 AM 0.05 M M M M
8/13/2010 7:00 AM 0.03 M M M M
8/14/2010 7:00 AM 0.00 0.0 M M M
8/15/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 7:00 AM 0.00 0.0 M M M
8/17/2010 7:00 AM 0.07 M M M M
8/19/2010 7:00 AM 0.00 0.0 M M M
8/20/2010 7:00 AM 0.03 M M M M
8/21/2010 7:00 AM 0.00 0.0 M M M
8/23/2010 7:00 AM 0.00 0.0 M M M
8/24/2010 7:00 AM 0.00 0.0 M M M
8/25/2010 7:00 AM 0.00 0.0 M M M
8/26/2010 7:00 AM 0.00 0.0 M M M
8/27/2010 7:00 AM 0.00 0.0 M M M
8/28/2010 7:00 AM 0.00 0.0 M M M
8/29/2010 7:00 AM 0.26 M M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM 0.01 M M M M
9/1/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM 0.00 0.0 M M M
9/4/2010 7:00 AM 0.00 0.0 M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.00 0.0 M M M
9/7/2010 7:00 AM 0.00 0.0 M M M
9/8/2010 7:00 AM 0.00 0.0 M M M
9/9/2010 7:00 AM 0.10 M M M M
9/10/2010 7:00 AM 0.00 0.0 M M M
9/11/2010 7:00 AM 0.00 0.0 M M M
9/12/2010 7:00 AM 0.00 0.0 M M M
9/13/2010 7:00 AM 0.00 0.0 M M M
9/14/2010 7:00 AM 0.00 0.0 M M M
9/15/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:00 AM 0.00 0.0 M M M
9/17/2010 7:00 AM 0.00 0.0 M M M
9/18/2010 7:00 AM 0.00 0.0 M M M
9/19/2010 7:00 AM 0.00 0.0 M M M
9/20/2010 7:00 AM 0.00 0.0 M M M
9/21/2010 7:00 AM 0.02 M M M M
9/22/2010 7:00 AM 0.00 0.0 M M M
9/23/2010 7:00 AM 0.24 M M M M
9/24/2010 7:00 AM 0.00 0.0 M M M
9/25/2010 7:00 AM 0.00 0.0 M M M
9/26/2010 7:00 AM 0.00 0.0 M M M
9/27/2010 7:00 AM 0.00 0.0 M M M
9/28/2010 7:00 AM 0.00 0.0 M M M
9/29/2010 7:00 AM 0.00 0.0 M M M
9/30/2010 7:00 AM 0.00 0.0 M M 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