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 11 1.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 11 2.01 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 11 1.88 0.00 5 0.00 5 0.00 0 0 0 0 0.0 0 5
Jan 12 1.72 0.51 10 0.08 2 0.43 8 1 1 1 2.0 1 2
Feb 12 1.83 0.09 1 0.09 1 0.00 0 0 1 0 2.0 1 1
March 12 2.16 0.00 1 0.00 1 0.00 0 0 0 1 0.0 0 1
April 12 2.48 0.00 22 0.00 0 0.00 22 0 0 0 0.0 0 0
May 12 1.98 0.00 31 0.00 0 0.00 31 0 0 0 0.0 0 0
June 12 1.29 0.00 30 0.00 0 0.00 30 0 0 0 0.0 0 0
July 12 1.69 3.67 31 0.00 0 3.67 31 1 0 0 0.0 0 0
Aug 12 1.59 2.29 31 1.01 6 1.28 25 1 4 0 0.0 0 0
Sept 12 1.53 0.66 7 0.03 6 0.63 1 1 1 0 0.0 0 0
Water Year Totals: 21.71" 7.22" 169 days 1.21" 21 6.01" 148 days 4 7 days 2 days 4.0" 2 days 9 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
10/1/2011
10/2/2011
10/3/2011
10/4/2011
10/5/2011
10/6/2011
10/7/2011
10/8/2011
10/9/2011
10/10/2011
10/11/2011
10/12/2011
10/13/2011
10/14/2011
10/15/2011
10/16/2011
10/17/2011
10/18/2011
10/19/2011
10/20/2011
10/21/2011
10/22/2011
10/23/2011
10/24/2011
10/25/2011
10/26/2011
10/27/2011
10/28/2011
10/29/2011
10/30/2011
10/31/2011
11/1/2011
11/2/2011
11/3/2011
11/4/2011
11/5/2011
11/6/2011
11/7/2011
11/8/2011
11/9/2011
11/10/2011
11/11/2011
11/12/2011
11/13/2011
11/14/2011
11/15/2011
11/16/2011
11/17/2011
11/18/2011
11/19/2011
11/20/2011
11/21/2011
11/22/2011
11/23/2011
11/24/2011
11/25/2011
11/26/2011
11/27/2011
11/28/2011
11/29/2011
11/30/2011
12/1/2011
12/2/2011
12/3/2011
12/4/2011
12/5/2011
12/6/2011
12/7/2011
12/8/2011
12/9/2011
12/10/2011
12/11/2011
12/12/2011 0.00
12/13/2011 0.00
12/14/2011
12/15/2011
12/16/2011
12/17/2011
12/18/2011
12/19/2011
12/20/2011
12/21/2011
12/22/2011
12/23/2011
12/24/2011 0.00
12/25/2011 0.00
12/26/2011
12/27/2011
12/28/2011 0.00
12/29/2011
12/30/2011
12/31/2011
Day of YearDaily PrcpMultiday Prcp
1/1/2012
1/2/2012
1/3/2012
1/4/2012
1/5/2012
1/6/2012
1/7/2012
1/8/2012
1/9/2012
1/10/2012
1/11/2012
1/12/2012
1/13/2012
1/14/2012
1/15/2012
1/16/2012
1/17/2012
1/18/2012 **
1/19/2012 0.08 **
1/20/2012 **
1/21/2012 **
1/22/2012 **
1/23/2012 **
1/24/2012 **
1/25/2012 T 0.43
1/26/2012
1/27/2012
1/28/2012
1/29/2012
1/30/2012
1/31/2012
2/1/2012
2/2/2012
2/3/2012
2/4/2012
2/5/2012
2/6/2012
2/7/2012
2/8/2012
2/9/2012
2/10/2012
2/11/2012 0.09
2/12/2012
2/13/2012
2/14/2012
2/15/2012
2/16/2012
2/17/2012
2/18/2012
2/19/2012
2/20/2012
2/21/2012
2/22/2012
2/23/2012
2/24/2012
2/25/2012
2/26/2012
2/27/2012
2/28/2012
2/29/2012
3/1/2012
3/2/2012
3/3/2012
3/4/2012
3/5/2012 T
3/6/2012
3/7/2012
3/8/2012
3/9/2012
3/10/2012
3/11/2012
3/12/2012
3/13/2012
3/14/2012
3/15/2012
3/16/2012
3/17/2012
3/18/2012
3/19/2012
3/20/2012
3/21/2012
3/22/2012
3/23/2012
3/24/2012
3/25/2012
3/26/2012
3/27/2012
3/28/2012
3/29/2012
3/30/2012
3/31/2012
Day of YearDaily PrcpMultiday Prcp
4/1/2012
4/2/2012
4/3/2012
4/4/2012
4/5/2012
4/6/2012
4/7/2012
4/8/2012
4/9/2012 **
4/10/2012 **
4/11/2012 **
4/12/2012 **
4/13/2012 **
4/14/2012 **
4/15/2012 **
4/16/2012 **
4/17/2012 **
4/18/2012 **
4/19/2012 **
4/20/2012 **
4/21/2012 **
4/22/2012 **
4/23/2012 **
4/24/2012 **
4/25/2012 **
4/26/2012 **
4/27/2012 **
4/28/2012 **
4/29/2012 **
4/30/2012 **
5/1/2012 **
5/2/2012 **
5/3/2012 **
5/4/2012 **
5/5/2012 **
5/6/2012 **
5/7/2012 **
5/8/2012 **
5/9/2012 **
5/10/2012 **
5/11/2012 **
5/12/2012 **
5/13/2012 **
5/14/2012 **
5/15/2012 **
5/16/2012 **
5/17/2012 **
5/18/2012 **
5/19/2012 **
5/20/2012 **
5/21/2012 **
5/22/2012 **
5/23/2012 **
5/24/2012 **
5/25/2012 **
5/26/2012 **
5/27/2012 **
5/28/2012 **
5/29/2012 **
5/30/2012 **
5/31/2012 **
6/1/2012 **
6/2/2012 **
6/3/2012 **
6/4/2012 **
6/5/2012 **
6/6/2012 **
6/7/2012 **
6/8/2012 **
6/9/2012 **
6/10/2012 **
6/11/2012 **
6/12/2012 **
6/13/2012 **
6/14/2012 **
6/15/2012 **
6/16/2012 **
6/17/2012 **
6/18/2012 **
6/19/2012 **
6/20/2012 **
6/21/2012 **
6/22/2012 **
6/23/2012 **
6/24/2012 **
6/25/2012 **
6/26/2012 **
6/27/2012 **
6/28/2012 **
6/29/2012 **
6/30/2012 **
Day of YearDaily PrcpMultiday Prcp
7/1/2012 **
7/2/2012 **
7/3/2012 **
7/4/2012 **
7/5/2012 **
7/6/2012 **
7/7/2012 **
7/8/2012 **
7/9/2012 3.67
7/10/2012 **
7/11/2012 **
7/12/2012 **
7/13/2012 **
7/14/2012 **
7/15/2012 **
7/16/2012 **
7/17/2012 **
7/18/2012 **
7/19/2012 **
7/20/2012 **
7/21/2012 **
7/22/2012 **
7/23/2012 **
7/24/2012 **
7/25/2012 **
7/26/2012 **
7/27/2012 **
7/28/2012 **
7/29/2012 **
7/30/2012 **
7/31/2012 **
8/1/2012 **
8/2/2012 **
8/3/2012 **
8/4/2012 **
8/5/2012 **
8/6/2012 **
8/7/2012 **
8/8/2012 **
8/9/2012 **
8/10/2012 **
8/11/2012 **
8/12/2012 **
8/13/2012 **
8/14/2012 **
8/15/2012 **
8/16/2012 **
8/17/2012 1.28
8/18/2012
8/19/2012
8/20/2012
8/21/2012 0.02
8/22/2012
8/23/2012 0.15
8/24/2012 0.74 **
8/25/2012 0.10 **
8/26/2012 0.00 **
8/27/2012 0.00 **
8/28/2012 **
8/29/2012 **
8/30/2012 **
8/31/2012 **
9/1/2012 0.63
9/2/2012 0.03
9/3/2012
9/4/2012
9/5/2012 0.00
9/6/2012 0.00
9/7/2012
9/8/2012
9/9/2012 0.00
9/10/2012 0.00
9/11/2012 0.00
9/12/2012
9/13/2012
9/14/2012
9/15/2012
9/16/2012
9/17/2012
9/18/2012
9/19/2012
9/20/2012
9/21/2012
9/22/2012
9/23/2012
9/24/2012
9/25/2012
9/26/2012
9/27/2012
9/28/2012
9/29/2012
9/30/2012



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
12/12/2011 7:00 AM 0.00 0.0 M 11.0 M 1212110700 As OVC Depth 11 Inches (10-12) 100% cover SU-27
12/13/2011 7:00 AM 0.00 0.0 M 11.0 M 1213110700 SU27 CLR 20+ Tmxmn 33 4 Depth 11 (10-12) inches 99% Cover
12/24/2011 7:00 AM 0.00 0.0 M 13.5 M CLR Depth 12-15 inches
12/25/2011 8:45 AM 0.00 0.0 M 13.5 M CLR CALM DEPTH 12-15 INCHES
12/28/2011 7:00 AM 0.00 0.0 M 12.0 M Depth 9-15 Inches avg 12 inches
1/19/2012 7:00 AM 0.08 2.0 M 20.0 M Depth 18-22 inches BS+ Heavy drifting; 2 Snow posts representative Note significantly more snow on ground than in Silverthorne
1/25/2012 7:00 AM T T M 23.5 M Depth 21-26 inches Total accum SWE 0.43 18-25 Jan 2012
2/11/2012 7:00 AM 0.09 2.0 M 27.5 M Depth 26-29 inches
3/5/2012 7:00 AM T T M 33.0 M EDW 0305120700 Depth 33 (30-36) inches T new Wind packed snow sugar snow below UNSTABLE
8/21/2012 7:00 AM 0.02 M M 0.0 M RW--
8/23/2012 7:00 AM 0.15 M M 0.0 M RW BGN 1530 - 2200
8/24/2012 7:00 AM 0.74 M M M M
8/25/2012 7:00 AM 0.10 M M 0.0 M TRW N RW 1530-1700
8/26/2012 7:00 AM 0.00 0.0 M M M
8/27/2012 7:00 AM 0.00 0.0 M M M
9/2/2012 7:00 AM 0.03 M M M M Cu+ Cb RW--
9/5/2012 7:00 AM 0.00 0.0 M M M
9/6/2012 7:00 AM 0.00 0.0 M 0.0 M Cu SCT all day
9/9/2012 7:00 AM 0.00 0.0 M M M
9/10/2012 7:00 AM 0.00 0.0 M M M
9/11/2012 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
1/18/2012 1/25/2012 7:00 AM 8 0.43 23.5 M
4/9/2012 7/09/2012 3:00 PM 92 3.67 0.0 0.00 Evaporation significant but area very dry this spring
7/10/2012 8/17/2012 10:00 AM 39 1.28 0.0 0.00
8/24/2012 9/01/2012 11:30 AM 9 0.63 M M TRW



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