Station Overview Station Location
Station Number CO-SU-27 Latitude 39.7386166
Station Name Silverthorne 7.3 NW Longitude -106.161233
County Summit Elevation (ft) 9203



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 1.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 12 2.01 0.00 9 0.00 9 0.00 0 0 0 0 0.0 0 0
Dec 12 1.88 1.47 31 0.52 10 0.95 21 2 5 2 10.0 5 8
Jan 13 1.72 0.43 4 0.00 1 0.43 3 1 0 0 0.0 0 1
Feb 13 1.83 0.46 27 0.01 2 0.45 25 1 1 0 0.1 1 2
March 13 2.16 1.36 13 0.00 1 1.36 12 1 0 0 0.0 0 1
April 13 2.48 2.19 23 0.46 2 1.73 21 2 1 0 6.0 1 2
May 13 1.98 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 13 1.29 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 13 1.69 0.47 20 0.15 3 0.32 17 1 1 0 0.0 0 0
Aug 13 1.59 2.43 31 0.03 7 2.40 24 6 1 0 0.0 0 0
Sept 13 1.53 0.07 22 0.07 1 0.00 21 0 1 0 0.0 0 0
Water Year Totals: 21.71" 8.88" 180 days 1.24" 36 7.64" 144 days 14 10 days 2 days 16.1" 7 days 14 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
10/2/2012
10/3/2012
10/4/2012
10/5/2012
10/6/2012
10/7/2012
10/8/2012
10/9/2012
10/10/2012
10/11/2012
10/12/2012
10/13/2012
10/14/2012
10/15/2012
10/16/2012
10/17/2012
10/18/2012
10/19/2012
10/20/2012
10/21/2012
10/22/2012
10/23/2012
10/24/2012
10/25/2012
10/26/2012
10/27/2012
10/28/2012
10/29/2012
10/30/2012
10/31/2012
11/1/2012
11/2/2012
11/3/2012
11/4/2012
11/5/2012
11/6/2012
11/7/2012
11/8/2012
11/9/2012
11/10/2012
11/11/2012
11/12/2012
11/13/2012
11/14/2012
11/15/2012
11/16/2012
11/17/2012
11/18/2012
11/19/2012
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 0.00
11/28/2012 0.00
11/29/2012
11/30/2012
12/1/2012 T
12/2/2012 0.00
12/3/2012
12/4/2012
12/5/2012
12/6/2012 0.01
12/7/2012 T
12/8/2012 0.11 **
12/9/2012 **
12/10/2012 **
12/11/2012 **
12/12/2012 0.64
12/13/2012
12/14/2012
12/15/2012 0.15 **
12/16/2012 0.15 **
12/17/2012 **
12/18/2012 **
12/19/2012 0.31
12/20/2012 0.10
12/21/2012 0.00 **
12/22/2012 0.00 **
12/23/2012 **
12/24/2012 **
12/25/2012 **
12/26/2012 **
12/27/2012 **
12/28/2012 **
12/29/2012 **
12/30/2012 **
12/31/2012 **
Day of YearDaily PrcpMultiday Prcp
1/1/2013 **
1/2/2013 **
1/3/2013 0.43
1/4/2013 0.00
1/5/2013
1/6/2013
1/7/2013
1/8/2013
1/9/2013
1/10/2013
1/11/2013
1/12/2013
1/13/2013
1/14/2013
1/15/2013
1/16/2013
1/17/2013
1/18/2013
1/19/2013
1/20/2013
1/21/2013
1/22/2013
1/23/2013
1/24/2013
1/25/2013
1/26/2013
1/27/2013
1/28/2013
1/29/2013
1/30/2013
1/31/2013
2/1/2013
2/2/2013
2/3/2013
2/4/2013
2/5/2013 **
2/6/2013 0.00 **
2/7/2013 **
2/8/2013 **
2/9/2013 **
2/10/2013 **
2/11/2013 **
2/12/2013 **
2/13/2013 **
2/14/2013 **
2/15/2013 **
2/16/2013 **
2/17/2013 **
2/18/2013 **
2/19/2013 **
2/20/2013 **
2/21/2013 **
2/22/2013 **
2/23/2013 0.01 **
2/24/2013 **
2/25/2013 **
2/26/2013 **
2/27/2013 **
2/28/2013 **
3/1/2013 **
3/2/2013 **
3/3/2013 **
3/4/2013 **
3/5/2013 **
3/6/2013 **
3/7/2013 **
3/8/2013 **
3/9/2013 **
3/10/2013 1.36
3/11/2013 0.00
3/12/2013
3/13/2013
3/14/2013
3/15/2013
3/16/2013
3/17/2013
3/18/2013
3/19/2013
3/20/2013
3/21/2013
3/22/2013
3/23/2013
3/24/2013
3/25/2013
3/26/2013
3/27/2013
3/28/2013
3/29/2013
3/30/2013 **
3/31/2013 **
Day of YearDaily PrcpMultiday Prcp
4/1/2013 **
4/2/2013 **
4/3/2013 **
4/4/2013 **
4/5/2013 **
4/6/2013 **
4/7/2013 **
4/8/2013 **
4/9/2013 **
4/10/2013 **
4/11/2013 **
4/12/2013 **
4/13/2013 0.00 **
4/14/2013 **
4/15/2013 **
4/16/2013 **
4/17/2013 **
4/18/2013 **
4/19/2013 **
4/20/2013 1.00
4/21/2013 0.46
4/22/2013
4/23/2013
4/24/2013
4/25/2013
4/26/2013
4/27/2013
4/28/2013
4/29/2013
4/30/2013
5/1/2013
5/2/2013
5/3/2013
5/4/2013
5/5/2013
5/6/2013
5/7/2013
5/8/2013
5/9/2013
5/10/2013
5/11/2013
5/12/2013
5/13/2013
5/14/2013
5/15/2013
5/16/2013
5/17/2013
5/18/2013
5/19/2013
5/20/2013
5/21/2013
5/22/2013
5/23/2013
5/24/2013
5/25/2013
5/26/2013
5/27/2013
5/28/2013
5/29/2013
5/30/2013
5/31/2013
6/1/2013
6/2/2013
6/3/2013
6/4/2013
6/5/2013
6/6/2013
6/7/2013
6/8/2013
6/9/2013
6/10/2013
6/11/2013
6/12/2013
6/13/2013
6/14/2013
6/15/2013
6/16/2013
6/17/2013
6/18/2013
6/19/2013
6/20/2013
6/21/2013
6/22/2013
6/23/2013
6/24/2013
6/25/2013
6/26/2013
6/27/2013
6/28/2013
6/29/2013
6/30/2013
Day of YearDaily PrcpMultiday Prcp
7/1/2013 **
7/2/2013 **
7/3/2013 **
7/4/2013 **
7/5/2013 **
7/6/2013 **
7/7/2013 **
7/8/2013 **
7/9/2013 **
7/10/2013 **
7/11/2013 **
7/12/2013 **
7/13/2013 0.32
7/14/2013 0.15
7/15/2013
7/16/2013
7/17/2013
7/18/2013
7/19/2013
7/20/2013
7/21/2013
7/22/2013 0.00
7/23/2013
7/24/2013
7/25/2013
7/26/2013
7/27/2013 0.00
7/28/2013 **
7/29/2013 **
7/30/2013 **
7/31/2013 **
8/1/2013 0.00 **
8/2/2013 **
8/3/2013 0.00 **
8/4/2013 **
8/5/2013 **
8/6/2013 **
8/7/2013 **
8/8/2013 **
8/9/2013 **
8/10/2013 **
8/11/2013 0.00 **
8/12/2013 0.05
8/13/2013
8/14/2013
8/15/2013 0.03
8/16/2013 0.00
8/17/2013 0.00
8/18/2013 0.00
8/19/2013
8/20/2013
8/21/2013
8/22/2013
8/23/2013
8/24/2013 **
8/25/2013 **
8/26/2013 **
8/27/2013 **
8/28/2013 **
8/29/2013 **
8/30/2013 **
8/31/2013 0.36
9/1/2013 0.07
9/2/2013
9/3/2013
9/4/2013
9/5/2013
9/6/2013
9/7/2013
9/8/2013
9/9/2013
9/10/2013 **
9/11/2013 **
9/12/2013 **
9/13/2013 **
9/14/2013 **
9/15/2013 **
9/16/2013 **
9/17/2013 **
9/18/2013 **
9/19/2013 **
9/20/2013 **
9/21/2013 **
9/22/2013 **
9/23/2013 **
9/24/2013 **
9/25/2013 **
9/26/2013 **
9/27/2013 **
9/28/2013 **
9/29/2013 **
9/30/2013 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
11/20/2012 7:00 AM 0.00 0.0 M M M
11/21/2012 7:00 AM 0.00 0.0 M M M
11/22/2012 7:00 AM 0.00 0.0 M M M AcL BKN
11/23/2012 7:00 AM 0.00 0.0 M M M
11/24/2012 7:00 AM 0.00 0.0 M M M
11/25/2012 7:00 AM 0.00 0.0 M M M
11/26/2012 7:00 AM 0.00 0.0 M M M
11/27/2012 7:00 AM 0.00 0.0 M M M
11/28/2012 7:00 AM 0.00 0.0 M M M
12/1/2012 7:00 AM T T M 0.0 M
12/2/2012 7:00 AM 0.00 0.0 M M M
12/6/2012 8:00 AM 0.01 0.1 M 1.0 M Depth 0-7 inches 50% Cover avg depth 1 SW- 1700-1800
12/7/2012 8:00 AM T T M 1.0 M 70% Cover
12/8/2012 8:30 AM 0.11 2.7 M 2.2 M 1208120830 Ns SW- 5 mi 30 F New 2.7 inches QPE SWE 0.11 INCHES 100% COVER CO SU 27 DEPTH 2-5 INCHES AVG 2.2 SW- ALL DAY
12/15/2012 7:00 AM 0.15 2.2 M 8.0 M
12/16/2012 7:00 AM 0.15 3.0 M 9.0 M
12/20/2012 7:00 AM 0.10 2.0 M 14.0 M
12/21/2012 7:00 AM 0.00 0.0 M 12.0 M Depth 12 (10-14) inches
12/22/2012 8:00 AM 0.00 0.0 M 11.0 M
1/4/2013 8:00 AM 0.00 0.0 M 14.5 M CLR Tmin -17F
2/6/2013 7:00 AM 0.00 0.0 M 17.0 M
2/23/2013 7:00 AM 0.01 0.1 M 21.5 M
3/11/2013 7:00 AM 0.00 0.0 M 28.5 M
4/13/2013 7:00 AM 0.00 0.0 M 19.5 M Depth 18-21 inches Rotten snow
4/21/2013 7:00 AM 0.46 6.0 M 26.0 M
7/14/2013 7:00 AM 0.15 M M M M TRW-
7/22/2013 8:00 AM 0.00 0.0 M M M
7/27/2013 9:00 AM 0.00 0.0 M M M Ac BKN
8/1/2013 8:00 AM 0.00 0.0 M M M
8/3/2013 6:00 AM 0.00 0.0 M M M
8/11/2013 7:00 AM 0.00 0.0 M M M
8/15/2013 8:00 AM 0.03 0.0 M 0.0 M 0815130800 SU 27 Ac SCT QPE 0.03 inches
8/16/2013 7:00 AM 0.00 0.0 M M M
8/17/2013 7:00 AM 0.00 0.0 M M M
8/18/2013 6:00 AM 0.00 0.0 M M M
9/1/2013 7:00 AM 0.07 0.0 M 0.0 M 0901130700 EDW SU27 RW-- v RW- 1700 to 2100 QPE 0.07 inches ACCUM 0.36 inches at 0831131200 from 082813



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
12/8/2012 12/12/2012 10:00 AM 5 0.64 7.0 M
12/15/2012 12/19/2012 2:00 PM 5 0.31 16.0 M
12/21/2012 1/03/2013 2:00 PM 14 0.43 14.5 M Min temp -17
2/5/2013 2/22/2013 4:00 PM 18 0.45 21.0 M sugar snow dense solid crystals like sugar throughout layer
2/22/2013 3/10/2013 1:00 PM 17 1.36 28.5 M 031013 SU27 Total cumulative 1.36 inches depth 28.5 (29+28) New 6.5 TMx 52 Tmn - 8 F
3/30/2013 4/13/2013 3:00 PM 15 0.73 19.5 M
4/13/2013 4/20/2013 7:00 AM 8 1.00 20.0 M Tmxmn 51 4 F
7/1/2013 7/13/2013 11:00 AM 13 0.32 0.0 0.00
7/28/2013 8/04/2013 3:00 PM 8 0.98 M M Tmxmn 78 39
8/4/2013 8/06/2013 10:00 AM 3 0.09 0.0 M
8/6/2013 8/08/2013 5:00 PM 3 0.26 0.0 0.00 0808131700 EDW 0.26 inches Tmxmn 74 39
8/8/2013 8/12/2013 2:00 PM 5 0.05 0.0 0.00 0812121400 EDW SU27 cumulative 0.05 inches Tmxmn 74 36
8/24/2013 8/28/2013 6:20 PM 5 0.66 0.0 M 082813 EDW SU27 0824 to 082813 QPE accumulative= 0.66 inches Tmxmn 78 42
8/28/2013 8/31/2013 12:00 AM 4 0.36 0.0 0.00 0901130700 EDW SU27 QPE 0.07 inches ACCUM 0.36 inches at 0831131200
9/10/2013 11/27/2013 2:00 PM 79 2.65 6.5 M Depth 4-13 inches Snow Poles set Tmxmn 80 0.3 F Note much evaporation between measurements. Comparable total cumulative QPE with TB3 Tipping bucket and data logger is 5.58 inches



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