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 14 1.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 14 2.01 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 14 1.88 0.10 2 0.10 2 0.00 0 0 2 0 2.2 2 2
Jan 15 1.72 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 1
Feb 15 1.83 0.00 18 0.00 0 0.00 18 0 0 0 0.0 0 0
March 15 2.16 1.20 28 0.00 1 1.20 27 1 0 0 0.0 0 1
April 15 2.48 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 15 1.98 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 15 1.29 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 15 1.69 3.55 32 0.58 5 2.97 27 2 1 0 0.0 0 0
Aug 15 1.59 1.01 37 0.03 15 0.98 22 3 1 0 0.0 0 0
Sept 15 1.53 1.13 33 0.33 16 0.80 17 3 3 0 0.0 0 0
Water Year Totals: 21.71" 6.99" 151 days 1.04" 40 5.95" 111 days 9 7 days 0 days 2.2" 2 days 4 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
10/1/2014
10/2/2014
10/3/2014
10/4/2014
10/5/2014
10/6/2014
10/7/2014
10/8/2014
10/9/2014
10/10/2014
10/11/2014
10/12/2014
10/13/2014
10/14/2014
10/15/2014
10/16/2014
10/17/2014
10/18/2014
10/19/2014
10/20/2014
10/21/2014
10/22/2014
10/23/2014
10/24/2014
10/25/2014
10/26/2014
10/27/2014
10/28/2014
10/29/2014
10/30/2014
10/31/2014
11/1/2014
11/2/2014
11/3/2014
11/4/2014
11/5/2014
11/6/2014
11/7/2014
11/8/2014
11/9/2014
11/10/2014
11/11/2014
11/12/2014
11/13/2014
11/14/2014
11/15/2014
11/16/2014
11/17/2014
11/18/2014
11/19/2014
11/20/2014
11/21/2014
11/22/2014
11/23/2014
11/24/2014
11/25/2014
11/26/2014
11/27/2014
11/28/2014
11/29/2014
11/30/2014
12/1/2014 0.01
12/2/2014
12/3/2014
12/4/2014
12/5/2014
12/6/2014
12/7/2014
12/8/2014
12/9/2014
12/10/2014
12/11/2014
12/12/2014
12/13/2014
12/14/2014
12/15/2014
12/16/2014
12/17/2014
12/18/2014
12/19/2014
12/20/2014
12/21/2014 0.09
12/22/2014
12/23/2014
12/24/2014
12/25/2014
12/26/2014
12/27/2014
12/28/2014
12/29/2014
12/30/2014
12/31/2014
Day of YearDaily PrcpMultiday Prcp
1/1/2015
1/2/2015
1/3/2015
1/4/2015
1/5/2015
1/6/2015
1/7/2015
1/8/2015
1/9/2015
1/10/2015
1/11/2015
1/12/2015
1/13/2015
1/14/2015
1/15/2015
1/16/2015
1/17/2015
1/18/2015
1/19/2015 0.00
1/20/2015
1/21/2015
1/22/2015
1/23/2015
1/24/2015
1/25/2015
1/26/2015
1/27/2015
1/28/2015
1/29/2015
1/30/2015
1/31/2015
2/1/2015
2/2/2015
2/3/2015
2/4/2015
2/5/2015
2/6/2015
2/7/2015
2/8/2015
2/9/2015
2/10/2015
2/11/2015 **
2/12/2015 **
2/13/2015 **
2/14/2015 **
2/15/2015 **
2/16/2015 **
2/17/2015 **
2/18/2015 **
2/19/2015 **
2/20/2015 **
2/21/2015 **
2/22/2015 **
2/23/2015 **
2/24/2015 **
2/25/2015 **
2/26/2015 **
2/27/2015 **
2/28/2015 **
3/1/2015 **
3/2/2015 **
3/3/2015 **
3/4/2015 **
3/5/2015 **
3/6/2015 **
3/7/2015 **
3/8/2015 **
3/9/2015 **
3/10/2015 **
3/11/2015 **
3/12/2015 **
3/13/2015 **
3/14/2015 **
3/15/2015 **
3/16/2015 **
3/17/2015 **
3/18/2015 **
3/19/2015 **
3/20/2015 **
3/21/2015 **
3/22/2015 **
3/23/2015 **
3/24/2015 **
3/25/2015 **
3/26/2015 **
3/27/2015 0.00 1.20
3/28/2015
3/29/2015
3/30/2015
3/31/2015
Day of YearDaily PrcpMultiday Prcp
4/1/2015
4/2/2015
4/3/2015
4/4/2015
4/5/2015
4/6/2015
4/7/2015
4/8/2015
4/9/2015
4/10/2015
4/11/2015
4/12/2015
4/13/2015
4/14/2015
4/15/2015
4/16/2015
4/17/2015
4/18/2015
4/19/2015
4/20/2015
4/21/2015
4/22/2015
4/23/2015
4/24/2015
4/25/2015
4/26/2015
4/27/2015
4/28/2015
4/29/2015
4/30/2015
5/1/2015
5/2/2015
5/3/2015
5/4/2015
5/5/2015
5/6/2015
5/7/2015
5/8/2015
5/9/2015
5/10/2015
5/11/2015
5/12/2015
5/13/2015
5/14/2015
5/15/2015
5/16/2015
5/17/2015
5/18/2015
5/19/2015
5/20/2015
5/21/2015
5/22/2015
5/23/2015
5/24/2015
5/25/2015
5/26/2015
5/27/2015
5/28/2015
5/29/2015
5/30/2015
5/31/2015
6/1/2015
6/2/2015
6/3/2015
6/4/2015
6/5/2015
6/6/2015
6/7/2015
6/8/2015
6/9/2015
6/10/2015
6/11/2015
6/12/2015
6/13/2015
6/14/2015
6/15/2015
6/16/2015
6/17/2015
6/18/2015
6/19/2015
6/20/2015
6/21/2015
6/22/2015
6/23/2015
6/24/2015
6/25/2015
6/26/2015
6/27/2015
6/28/2015
6/29/2015
6/30/2015
Day of YearDaily PrcpMultiday Prcp
7/1/2015
7/2/2015
7/3/2015
7/4/2015
7/5/2015 **
7/6/2015 0.58 **
7/7/2015 **
7/8/2015 **
7/9/2015 **
7/10/2015 1.60
7/11/2015 **
7/12/2015 **
7/13/2015 **
7/14/2015 **
7/15/2015 **
7/16/2015 **
7/17/2015 **
7/18/2015 **
7/19/2015 **
7/20/2015 **
7/21/2015 **
7/22/2015 **
7/23/2015 **
7/24/2015 **
7/25/2015 **
7/26/2015 **
7/27/2015 1.37
7/28/2015 0.00 **
7/29/2015 0.00 **
7/30/2015 0.00 **
7/31/2015 0.00 **
8/1/2015 **
8/2/2015 0.00 0.02
8/3/2015
8/4/2015 0.00
8/5/2015 0.00
8/6/2015 0.00
8/7/2015 0.00
8/8/2015 0.03 **
8/9/2015 **
8/10/2015 0.00 **
8/11/2015 **
8/12/2015 **
8/13/2015 **
8/14/2015 **
8/15/2015 **
8/16/2015 **
8/17/2015 **
8/18/2015 0.87
8/19/2015 0.00
8/20/2015 0.00
8/21/2015 0.00
8/22/2015
8/23/2015 0.00
8/24/2015 0.00 **
8/25/2015 0.00 **
8/26/2015 0.00 **
8/27/2015 **
8/28/2015 **
8/29/2015 0.00 **
8/30/2015 **
8/31/2015 **
9/1/2015 0.09
9/2/2015 **
9/3/2015 **
9/4/2015 0.63
9/5/2015 0.12
9/6/2015 0.03 **
9/7/2015 **
9/8/2015 0.18 **
9/9/2015 **
9/10/2015 0.00 **
9/11/2015 0.00 **
9/12/2015 0.00 **
9/13/2015 **
9/14/2015 0.00 **
9/15/2015 **
9/16/2015 **
9/17/2015 0.00 **
9/18/2015 0.00 0.08
9/19/2015 0.00
9/20/2015 0.00
9/21/2015 0.00
9/22/2015
9/23/2015
9/24/2015 0.00
9/25/2015 0.00
9/26/2015
9/27/2015 0.00
9/28/2015 0.00
9/29/2015
9/30/2015



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
12/1/2014 8:10 AM 0.01 0.2 M 10.0 M Depth 8-12 inches avg 10.0
12/21/2014 8:00 AM 0.09 2.0 M 14.0 M Depth 10 and 18 inches SW-- all day S-- SBGN ~1800
1/19/2015 7:00 AM 0.00 0.0 M 20.5 M Depth 19-22 inches sugar snow avg 20.5 inches
3/27/2015 9:00 AM 0.00 0.0 M 11.0 M Depth 11.0 (8-14) inches frozen AM soft PM total SWE from 2/11/15 to 3/27/15 is 1.20 inches Temp range -1.3 to 59 F Record Max temps in March 95% cover
7/6/2015 8:00 AM 0.58 0.0 M 0.0 M 0706150800 -X F Cs BKN .5 mi TRW 1430-1515 QPE 0.58 inches BOULDER CREEK RUNNING HIGH for July
7/28/2015 8:00 AM 0.00 0.0 M M M CLR
7/29/2015 8:00 AM 0.00 0.0 M M M CLR
7/30/2015 8:00 AM 0.00 0.0 M M M CLR FEW Cs
7/31/2015 7:00 AM 0.00 0.0 M M M CLR DRY
8/2/2015 6:00 AM 0.00 0.0 M M M
8/4/2015 5:00 AM 0.00 0.0 M M M
8/5/2015 6:00 AM 0.00 0.0 M M M
8/6/2015 8:00 AM 0.00 0.0 M M M
8/7/2015 8:00 AM 0.00 0.0 M M M
8/8/2015 8:00 AM 0.03 M M M M 0808150800 SU27 RW -- RW- 1600-1700 QPE 0.03 inches
8/10/2015 7:00 AM 0.00 0.0 M M M
8/19/2015 8:00 AM 0.00 0.0 M M M
8/20/2015 8:00 AM 0.00 0.0 M M M
8/21/2015 7:00 AM 0.00 0.0 M M M
8/23/2015 7:00 AM 0.00 0.0 M M M
8/24/2015 7:00 AM 0.00 0.0 M M M
8/25/2015 5:00 AM 0.00 0.0 M M M
8/26/2015 7:00 AM 0.00 0.0 M M M
8/29/2015 7:00 AM 0.00 0.0 M M M
9/5/2015 7:00 AM 0.12 0.0 M 0.0 M 0905150800 EDW RW+ TRW QPE 0.12 1830-2000
9/6/2015 7:00 AM 0.03 0.0 M 0.0 M 0906150700 EDW Su27 RW- 1600-1620 QPE 0.03 Tmxmn 65 40
9/8/2015 5:00 AM 0.18 0.0 M 0.0 M 0907151530 SU27 Sc Ns OVC SCT RW TRW QPE 0.18 inches RW TRW 1230 - 1400 PREV QPE 06 TO 07 SEPT 0.04 INCHES
9/10/2015 7:00 AM 0.00 0.0 M M M FEW Cu all day
9/11/2015 7:00 AM 0.00 0.0 M M M CLR DRY
9/12/2015 6:00 AM 0.00 0.0 M M M
9/14/2015 7:00 AM 0.00 0.0 M M M
9/17/2015 7:00 AM 0.00 0.0 M M M
9/18/2015 7:00 AM 0.00 0.0 M M M
9/19/2015 8:00 AM 0.00 0.0 M M M CLR TMXMN 72 32 ACCUM QPE 0.08 INCHES SEPT 6-18TH
9/20/2015 7:00 AM 0.00 0.0 M M M
9/21/2015 8:00 AM 0.00 0.0 M M M
9/24/2015 8:00 AM 0.00 0.0 M M M CLR DRY
9/25/2015 7:00 AM 0.00 0.0 M M M Tmxmn 75 29 F very dry beautiful Aspen colors
9/27/2015 8:00 AM 0.00 0.0 M M M CLR VERY DRY LEAVES AT PEAK COLOR
9/28/2015 8:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
2/11/2015 3/27/2015 9:00 AM 45 1.20 11.0 M Tmxmn 59 -1.3 F 95% snow cover frozen granular snow; Road is dry, normally snow and ice covered
7/5/2015 7/10/2015 11:30 AM 6 1.60 0.0 0.00 VERY HEAVY SHOWERS AND THUNDERSTORMS
7/11/2015 7/27/2015 12:00 AM 17 1.37 0.0 0.00 EVAPORATION OF RAIN IN THIS PERIOD Main cylinder full, over flow of 0.37 inches
7/28/2015 8/02/2015 2:00 PM 6 0.02 0.0 0.00 0802151400 TRW- SCT TRW 1200-1400 .02 inches
8/8/2015 8/18/2015 12:30 PM 11 0.87 0.0 0.00 Temp Max min 87 35 F 8-18 Aug 2015
8/24/2015 8/27/2015 11:30 AM 4 0.09 0.0 M
8/27/2015 9/01/2015 12:00 AM 6 0.09 M M Tmx mn 85 35 F soils are dry
9/2/2015 9/04/2015 12:00 AM 3 0.63 0.0 M 0905150800 EDW Su27 1-4 SEPT Total QPE 0.63 inches 35 to 80F
9/6/2015 9/18/2015 3:00 PM 13 0.08 0.0 M TMXMN 72 32 F ASPEN IN FULL COLOR



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