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 15 1.55 0.00 10 0.00 10 0.00 0 0 0 1 0.0 0 0
Nov 15 2.01 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 15 1.88 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 16 1.72 0.10 1 0.10 1 0.00 0 0 1 0 3.0 1 1
Feb 16 1.83 0.00 6 0.00 4 0.00 2 0 0 0 0.0 0 2
March 16 2.16 0.88 31 0.00 1 0.88 30 1 0 0 0.0 0 1
April 16 2.48 0.46 10 0.08 1 0.38 9 1 1 0 0.5 1 1
May 16 1.98 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 16 1.29 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 16 1.69 0.00 14 0.00 14 0.00 0 0 0 1 0.0 0 0
Aug 16 1.59 1.97 32 0.00 1 1.97 31 4 0 0 0.0 0 0
Sept 16 1.53 0.76 15 0.04 7 0.72 8 2 2 0 0.0 0 0
Water Year Totals: 21.71" 4.17" 119 days 0.22" 39 3.95" 80 days 8 4 days 2 days 3.5" 2 days 5 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
10/1/2015
10/2/2015 0.00
10/3/2015
10/4/2015
10/5/2015
10/6/2015
10/7/2015
10/8/2015
10/9/2015
10/10/2015 0.00
10/11/2015 0.00
10/12/2015 0.00
10/13/2015 0.00
10/14/2015 0.00
10/15/2015 0.00
10/16/2015 0.00
10/17/2015 0.00
10/18/2015
10/19/2015 T
10/20/2015
10/21/2015
10/22/2015
10/23/2015
10/24/2015
10/25/2015
10/26/2015
10/27/2015
10/28/2015
10/29/2015
10/30/2015
10/31/2015
11/1/2015
11/2/2015
11/3/2015
11/4/2015
11/5/2015
11/6/2015
11/7/2015
11/8/2015
11/9/2015
11/10/2015
11/11/2015
11/12/2015
11/13/2015
11/14/2015
11/15/2015
11/16/2015
11/17/2015
11/18/2015
11/19/2015
11/20/2015
11/21/2015
11/22/2015
11/23/2015
11/24/2015
11/25/2015
11/26/2015
11/27/2015
11/28/2015
11/29/2015
11/30/2015
12/1/2015
12/2/2015
12/3/2015
12/4/2015
12/5/2015
12/6/2015
12/7/2015
12/8/2015
12/9/2015
12/10/2015
12/11/2015
12/12/2015
12/13/2015
12/14/2015
12/15/2015
12/16/2015
12/17/2015
12/18/2015
12/19/2015
12/20/2015
12/21/2015
12/22/2015
12/23/2015
12/24/2015
12/25/2015
12/26/2015
12/27/2015
12/28/2015
12/29/2015
12/30/2015
12/31/2015
Day of YearDaily PrcpMultiday Prcp
1/1/2016
1/2/2016
1/3/2016
1/4/2016
1/5/2016
1/6/2016
1/7/2016
1/8/2016
1/9/2016
1/10/2016
1/11/2016
1/12/2016
1/13/2016
1/14/2016
1/15/2016
1/16/2016 0.10
1/17/2016
1/18/2016
1/19/2016
1/20/2016
1/21/2016
1/22/2016
1/23/2016
1/24/2016
1/25/2016
1/26/2016
1/27/2016
1/28/2016
1/29/2016
1/30/2016
1/31/2016
2/1/2016
2/2/2016
2/3/2016
2/4/2016
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/2016
2/12/2016
2/13/2016
2/14/2016 0.00
2/15/2016
2/16/2016
2/17/2016
2/18/2016
2/19/2016
2/20/2016
2/21/2016
2/22/2016
2/23/2016
2/24/2016
2/25/2016 0.00
2/26/2016 0.00
2/27/2016 0.00
2/28/2016 **
2/29/2016 **
3/1/2016 **
3/2/2016 **
3/3/2016 **
3/4/2016 **
3/5/2016 **
3/6/2016 **
3/7/2016 **
3/8/2016 **
3/9/2016 **
3/10/2016 **
3/11/2016 **
3/12/2016 **
3/13/2016 **
3/14/2016 **
3/15/2016 **
3/16/2016 **
3/17/2016 **
3/18/2016 **
3/19/2016 0.88
3/20/2016 0.00
3/21/2016 **
3/22/2016 **
3/23/2016 **
3/24/2016 **
3/25/2016 **
3/26/2016 **
3/27/2016 **
3/28/2016 **
3/29/2016 **
3/30/2016 **
3/31/2016 **
Day of YearDaily PrcpMultiday Prcp
4/1/2016 **
4/2/2016 **
4/3/2016 **
4/4/2016 **
4/5/2016 **
4/6/2016 **
4/7/2016 **
4/8/2016 **
4/9/2016 0.38
4/10/2016 0.08
4/11/2016
4/12/2016
4/13/2016
4/14/2016
4/15/2016
4/16/2016
4/17/2016
4/18/2016
4/19/2016
4/20/2016
4/21/2016
4/22/2016
4/23/2016
4/24/2016
4/25/2016
4/26/2016
4/27/2016
4/28/2016
4/29/2016
4/30/2016
5/1/2016
5/2/2016
5/3/2016
5/4/2016
5/5/2016
5/6/2016
5/7/2016
5/8/2016
5/9/2016
5/10/2016
5/11/2016
5/12/2016
5/13/2016
5/14/2016
5/15/2016
5/16/2016
5/17/2016
5/18/2016
5/19/2016
5/20/2016
5/21/2016
5/22/2016
5/23/2016
5/24/2016
5/25/2016
5/26/2016
5/27/2016
5/28/2016
5/29/2016
5/30/2016
5/31/2016
6/1/2016
6/2/2016
6/3/2016
6/4/2016
6/5/2016
6/6/2016
6/7/2016
6/8/2016
6/9/2016
6/10/2016
6/11/2016
6/12/2016
6/13/2016
6/14/2016
6/15/2016
6/16/2016
6/17/2016
6/18/2016
6/19/2016
6/20/2016
6/21/2016
6/22/2016
6/23/2016
6/24/2016
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016
7/2/2016
7/3/2016
7/4/2016
7/5/2016
7/6/2016
7/7/2016
7/8/2016
7/9/2016
7/10/2016 0.00
7/11/2016
7/12/2016 T
7/13/2016 0.00
7/14/2016 0.00
7/15/2016 0.00
7/16/2016 0.00
7/17/2016 0.00
7/18/2016 0.00
7/19/2016
7/20/2016
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016 0.00
7/26/2016 0.00
7/27/2016
7/28/2016 0.00
7/29/2016 0.00
7/30/2016 0.00
7/31/2016 0.00
8/1/2016
8/2/2016
8/3/2016 0.00
8/4/2016 **
8/5/2016 **
8/6/2016 **
8/7/2016 0.52
8/8/2016 **
8/9/2016 **
8/10/2016 **
8/11/2016 **
8/12/2016 **
8/13/2016 **
8/14/2016 **
8/15/2016 **
8/16/2016 **
8/17/2016 **
8/18/2016 **
8/19/2016 **
8/20/2016 **
8/21/2016 0.77
8/22/2016 **
8/23/2016 **
8/24/2016 **
8/25/2016 **
8/26/2016 **
8/27/2016 **
8/28/2016 **
8/29/2016 **
8/30/2016 0.53
8/31/2016 **
9/1/2016 **
9/2/2016 **
9/3/2016 **
9/4/2016 0.58
9/5/2016 0.02
9/6/2016
9/7/2016
9/8/2016
9/9/2016
9/10/2016
9/11/2016
9/12/2016 0.02
9/13/2016 **
9/14/2016 **
9/15/2016 **
9/16/2016 0.14
9/17/2016 0.00
9/18/2016 0.00
9/19/2016 0.00
9/20/2016
9/21/2016 0.00
9/22/2016
9/23/2016 0.00
9/24/2016
9/25/2016
9/26/2016
9/27/2016
9/28/2016
9/29/2016
9/30/2016



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/2/2015 7:00 AM 0.00 0.0 M M M
10/10/2015 8:00 AM 0.00 0.0 M M M
10/11/2015 9:00 AM 0.00 0.0 M M M AcL SCT mtn waves
10/12/2015 7:00 AM 0.00 0.0 M M M
10/13/2015 8:00 AM 0.00 0.0 M M M CLR
10/14/2015 8:00 AM 0.00 0.0 M M M CLR all day very dry
10/15/2015 8:00 AM 0.00 0.0 M M M
10/16/2015 8:00 AM 0.00 0.0 M M M
10/17/2015 7:00 AM 0.00 0.0 M M M
10/19/2015 7:00 AM T M M M M ACCUM QPE 0.31 TMXMN 81 27 F SINCE 18 SEPT
1/16/2016 8:00 AM 0.10 3.0 M 21.0 M Depth 18-24 Sugar snow to ground surface new layer
2/14/2016 7:00 AM 0.00 0.0 M M M
2/25/2016 7:00 AM 0.00 0.0 M M M
2/26/2016 7:00 AM 0.00 0.0 M 21.0 M Depth 18-24 avg 21 inches
2/27/2016 8:00 AM 0.00 0.0 M 20.0 M CLR all day Melting and Sublimation Road to dirt
3/20/2016 7:00 AM 0.00 0.0 M 32.0 M CLR DEPTH 28-36 AVG 32.0 ACCUMULATED SWE 0.88 (MELT DRFT EVAP) XC DEPTH 1.3 km LOOP est: 30-45 inches in Boulder Creek valley
4/10/2016 8:00 AM 0.08 0.5 M 20.0 M RW SW waves passed thru all afternoon, slush, road wet Depth 18-22 avg 20 inches solid pack 36-40ºF
7/10/2016 7:00 AM 0.00 0.0 M 0.0 M Warm windy very dry
7/12/2016 5:00 AM T 0.0 M 0.0 M Breezy SCT RW-
7/13/2016 6:00 AM 0.00 0.0 M M M KH 10 mi
7/14/2016 6:00 AM 0.00 0.0 M M M CLR COOL VERY DRY
7/15/2016 6:00 AM 0.00 0.0 M M M K H Breezy and very dry
7/16/2016 6:00 AM 0.00 0.0 M M M
7/17/2016 7:00 AM 0.00 0.0 M M M very dry breeezy
7/18/2016 6:00 AM 0.00 0.0 M M M Breezy Dry
7/25/2016 6:00 AM 0.00 0.0 M M M CLR VERY DRY
7/26/2016 7:00 AM 0.00 0.0 M M M
7/28/2016 7:00 AM 0.00 0.0 M M M
7/29/2016 6:00 AM 0.00 0.0 M M M Few Cu all day
7/30/2016 7:00 AM 0.00 0.0 M M M
7/31/2016 7:00 AM 0.00 0.0 M M M
8/3/2016 7:00 AM 0.00 0.0 M M M Ac OVC
9/5/2016 7:00 AM 0.02 M M M M Bands of RW-- passed over 3 times from 1300-1400 QPE 0.02 inches
9/12/2016 8:00 AM 0.02 0.0 M 0.0 M RW- Tmxmn 75 36ºF Leaves turning
9/17/2016 6:25 AM 0.00 0.0 M M M Clear cold FROST
9/18/2016 7:00 AM 0.00 0.0 M M M 091716 0600 AcL BKN Tmxmn 64 28ºF Cu SCT all day
9/19/2016 8:00 AM 0.00 0.0 M M M
9/21/2016 7:00 AM 0.00 0.0 M M M
9/23/2016 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
2/28/2016 3/19/2016 7:00 AM 21 0.88 32.0 M CLR temp 20 to 34ºF depth 28-36 avg 32.0 gauge had melting, evaporation and drifting conditions. XC ski loop 1.3 km in Boulder creek valley near station had 30-45 inches deep snow, firm base
3/21/2016 4/09/2016 2:00 PM 20 0.38 20.0 M Depth 18-22 inches solid pack RW- BGN 1230 series of RW passed thru
8/4/2016 8/07/2016 5:00 PM 4 0.52 0.0 0.00 Tmax 81 Tmin 40 ºF SCT v BKN TRW RW during Week
8/8/2016 8/21/2016 9:00 AM 14 0.77 0.0 0.00 TMXMN 78 35ºF Cs SCT v BKN
8/22/2016 8/25/2016 4:00 PM 4 0.15 0.0 0.00 Max T 71 min 35ºF Aspen leaves changing
8/23/2016 8/30/2016 5:00 PM 8 0.53 0.0 0.00 Tmxmn 81 35ºF leaves turning
8/31/2016 9/04/2016 11:50 AM 5 0.58 0.0 0.00 090416 1150 SU27 EDW Accum 0.58 083016-090416 Sc Cu+ SCT bands of RW- Tmxmn 75-35ºF
9/13/2016 9/16/2016 11:00 AM 4 0.14 0.0 0.00 Tmxmn 70 28ºF



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