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 16 1.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 16 2.01 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 16 1.88 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 17 1.72 0.06 2 0.06 2 0.00 0 0 1 1 1.0 1 2
Feb 17 1.83 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 1
March 17 2.16 0.05 2 0.05 2 0.00 0 0 1 1 1.2 1 2
April 17 2.48 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 1
May 17 1.98 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 17 1.29 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 17 1.69 0.66 17 0.58 15 0.08 2 1 5 2 0.0 0 0
Aug 17 1.59 0.89 19 0.78 5 0.11 14 2 4 0 0.0 0 0
Sept 17 1.53 0.16 4 0.00 0 0.16 4 1 0 0 0.0 0 0
Water Year Totals: 21.71" 1.82" 46 days 1.47" 26 0.35" 20 days 4 11 days 4 days 2.2" 2 days 6 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
10/1/2016
10/2/2016
10/3/2016
10/4/2016
10/5/2016
10/6/2016
10/7/2016
10/8/2016
10/9/2016
10/10/2016
10/11/2016
10/12/2016
10/13/2016
10/14/2016
10/15/2016
10/16/2016
10/17/2016
10/18/2016
10/19/2016
10/20/2016
10/21/2016
10/22/2016
10/23/2016
10/24/2016
10/25/2016
10/26/2016
10/27/2016
10/28/2016
10/29/2016
10/30/2016
10/31/2016
11/1/2016
11/2/2016
11/3/2016
11/4/2016
11/5/2016
11/6/2016
11/7/2016
11/8/2016
11/9/2016
11/10/2016
11/11/2016
11/12/2016
11/13/2016
11/14/2016
11/15/2016
11/16/2016
11/17/2016
11/18/2016
11/19/2016
11/20/2016
11/21/2016
11/22/2016
11/23/2016
11/24/2016
11/25/2016
11/26/2016
11/27/2016
11/28/2016
11/29/2016
11/30/2016
12/1/2016
12/2/2016
12/3/2016
12/4/2016
12/5/2016
12/6/2016
12/7/2016
12/8/2016
12/9/2016
12/10/2016
12/11/2016
12/12/2016
12/13/2016
12/14/2016
12/15/2016
12/16/2016
12/17/2016
12/18/2016
12/19/2016
12/20/2016
12/21/2016
12/22/2016
12/23/2016
12/24/2016
12/25/2016
12/26/2016
12/27/2016
12/28/2016
12/29/2016
12/30/2016
12/31/2016
Day of YearDaily PrcpMultiday Prcp
1/1/2017
1/2/2017 T
1/3/2017
1/4/2017
1/5/2017
1/6/2017
1/7/2017
1/8/2017 0.06
1/9/2017
1/10/2017
1/11/2017
1/12/2017
1/13/2017
1/14/2017
1/15/2017
1/16/2017
1/17/2017
1/18/2017
1/19/2017
1/20/2017
1/21/2017
1/22/2017
1/23/2017
1/24/2017
1/25/2017
1/26/2017
1/27/2017
1/28/2017
1/29/2017
1/30/2017
1/31/2017
2/1/2017
2/2/2017
2/3/2017
2/4/2017
2/5/2017
2/6/2017
2/7/2017
2/8/2017
2/9/2017
2/10/2017
2/11/2017
2/12/2017
2/13/2017
2/14/2017
2/15/2017
2/16/2017
2/17/2017
2/18/2017
2/19/2017 0.00
2/20/2017
2/21/2017
2/22/2017
2/23/2017
2/24/2017
2/25/2017
2/26/2017
2/27/2017
2/28/2017
3/1/2017
3/2/2017
3/3/2017
3/4/2017
3/5/2017
3/6/2017
3/7/2017
3/8/2017
3/9/2017
3/10/2017
3/11/2017
3/12/2017
3/13/2017 T
3/14/2017
3/15/2017
3/16/2017
3/17/2017
3/18/2017
3/19/2017
3/20/2017
3/21/2017
3/22/2017
3/23/2017
3/24/2017
3/25/2017
3/26/2017 0.05
3/27/2017
3/28/2017
3/29/2017
3/30/2017
3/31/2017
Day of YearDaily PrcpMultiday Prcp
4/1/2017
4/2/2017
4/3/2017
4/4/2017
4/5/2017
4/6/2017
4/7/2017
4/8/2017
4/9/2017
4/10/2017
4/11/2017
4/12/2017
4/13/2017
4/14/2017
4/15/2017 0.00
4/16/2017
4/17/2017
4/18/2017
4/19/2017
4/20/2017
4/21/2017
4/22/2017
4/23/2017
4/24/2017
4/25/2017
4/26/2017
4/27/2017
4/28/2017
4/29/2017
4/30/2017
5/1/2017
5/2/2017
5/3/2017
5/4/2017
5/5/2017
5/6/2017
5/7/2017
5/8/2017
5/9/2017
5/10/2017
5/11/2017
5/12/2017
5/13/2017
5/14/2017
5/15/2017
5/16/2017
5/17/2017
5/18/2017
5/19/2017
5/20/2017
5/21/2017
5/22/2017
5/23/2017
5/24/2017
5/25/2017
5/26/2017
5/27/2017
5/28/2017
5/29/2017
5/30/2017
5/31/2017
6/1/2017
6/2/2017
6/3/2017
6/4/2017
6/5/2017
6/6/2017
6/7/2017
6/8/2017
6/9/2017
6/10/2017
6/11/2017
6/12/2017
6/13/2017
6/14/2017
6/15/2017
6/16/2017
6/17/2017
6/18/2017
6/19/2017
6/20/2017
6/21/2017
6/22/2017
6/23/2017
6/24/2017
6/25/2017
6/26/2017
6/27/2017
6/28/2017
6/29/2017
6/30/2017
Day of YearDaily PrcpMultiday Prcp
7/1/2017
7/2/2017 0.00
7/3/2017
7/4/2017 0.05
7/5/2017 0.00
7/6/2017 0.00
7/7/2017
7/8/2017
7/9/2017 0.01
7/10/2017 0.00
7/11/2017
7/12/2017
7/13/2017
7/14/2017 T
7/15/2017 T
7/16/2017
7/17/2017 0.00
7/18/2017 0.00
7/19/2017 0.00
7/20/2017
7/21/2017 0.00
7/22/2017 **
7/23/2017 0.08
7/24/2017
7/25/2017
7/26/2017
7/27/2017
7/28/2017 0.23
7/29/2017 0.26
7/30/2017 0.03
7/31/2017
8/1/2017
8/2/2017
8/3/2017 **
8/4/2017 **
8/5/2017 **
8/6/2017 0.09
8/7/2017
8/8/2017 0.26
8/9/2017 0.38
8/10/2017 0.11
8/11/2017
8/12/2017
8/13/2017 0.03
8/14/2017
8/15/2017 0.00
8/16/2017 **
8/17/2017 **
8/18/2017 0.02
8/19/2017
8/20/2017
8/21/2017
8/22/2017
8/23/2017
8/24/2017
8/25/2017 **
8/26/2017 **
8/27/2017 **
8/28/2017 **
8/29/2017 **
8/30/2017 **
8/31/2017 **
9/1/2017 **
9/2/2017 **
9/3/2017 **
9/4/2017 0.16
9/5/2017
9/6/2017
9/7/2017
9/8/2017
9/9/2017
9/10/2017
9/11/2017
9/12/2017
9/13/2017
9/14/2017
9/15/2017
9/16/2017
9/17/2017
9/18/2017
9/19/2017
9/20/2017
9/21/2017
9/22/2017
9/23/2017
9/24/2017
9/25/2017
9/26/2017
9/27/2017
9/28/2017
9/29/2017
9/30/2017



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
1/2/2017 7:00 AM T T M 22.0 M Wind blown and packed snowTmxmn 28 -1ºF
1/8/2017 7:00 AM 0.06 1.0 M 38.0 M Deep dry snow Storm total New 12-14 inches
2/19/2017 7:00 AM 0.00 0.0 M 30.0 M Depth 30.0 hard pack
3/13/2017 7:00 AM T T M 30.0 M Depth 25-36 avg 30.0 soft "rotten " snow SCT SW--
3/26/2017 8:00 AM 0.05 1.2 M 16.0 M SU27 0326170800 Ns OVC SW- 3 mi New 1.2 Depth 16 (1-30) inches Deep snow in valley floor & forest; S facing slopes clear; today 1-2 inch dusting
4/15/2017 7:00 AM 0.00 0.0 M 6.0 M Cs BKN Snow Cover 80%; 100 % bottom of valley up N Facing Slopes Depth 1-3 ft average at station .5 ft; more snow than at SU-6
7/2/2017 8:00 AM 0.00 0.0 M 0.0 M 0702170700 Ac Cs SCT 20+mi Tmxmn 73 38 Very DRY
7/4/2017 6:00 AM 0.05 0.0 M 0.0 M 0703170600 SU27 CLR Cu Cu+ SCT RW- 1130-1400 SCT; Cu SCT 1400-1700 Cu+ RW- 1800-1900 QPE 0.05
7/5/2017 6:00 AM 0.00 0.0 M M M K -X no precip
7/6/2017 6:00 AM 0.00 0.0 M M M K H Very Dry
7/9/2017 8:00 AM 0.01 M M M M SCT RW--
7/10/2017 6:00 AM 0.00 0.0 M M M 0710170600 SU27 15mi KH Very DRY
7/14/2017 6:00 AM T M M M M SCT RW- - -
7/15/2017 6:00 AM T M M M M
7/17/2017 7:00 AM 0.00 0.0 M M M Very dry dusty soil
7/18/2017 6:00 AM 0.00 0.0 M M M
7/19/2017 7:00 AM 0.00 0.0 M M M
7/21/2017 6:00 AM 0.00 0.0 M M M DRY dusty
7/28/2017 8:50 AM 0.23 0.0 M 0.0 M 0728170850 SU27 Cu SCT TRW PM QPE 0.23 inches Tmxmn 81 44ºF
7/29/2017 8:40 AM 0.26 0.0 M 0.0 M 0729170840 SU27 Ns R- F QPE 0.26 Tmxmn 71 44ºF soaked soils
7/30/2017 7:00 AM 0.03 M M M M RW- v RW- 0900 - 1100 MDT Ns OVC; St As OVC PM
8/8/2017 7:00 AM 0.26 M M M M Moist soils puddles RW R- 1800-2300
8/9/2017 8:50 AM 0.38 0.0 M 0.0 M 0809170850 SU27 Sc Cu+ Developing TRW+ yesterday QPE 0.38 Tmxmn 62 36ºF
8/10/2017 8:50 AM 0.11 0.0 M 0.0 M 0810170850 SU27 Cu SCT Rains Ended AM QPE 0.11 inches
8/13/2017 6:00 AM 0.03 M M M M RW- - 1510, 1615 Ns OVC As OVC All Day RW+ N 64 36ºF Cool
8/15/2017 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
7/22/2017 7/23/2017 3:00 PM 2 0.08 M M Very dry dusty soil
8/3/2017 8/06/2017 2:00 PM 4 0.09 0.0 0.00 SCT RW AND TRW-
8/16/2017 8/18/2017 11:00 AM 3 0.02 M M
8/25/2017 9/04/2017 7:00 AM 11 0.16 0.0 M Tmxmn 82 34ºF very dry soils dusty



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