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 17 1.55 0.00 17 0.00 0 0.00 17 0 0 0 0.0 0 0
Nov 17 2.01 0.00 30 0.00 0 0.00 30 0 0 0 0.0 0 0
Dec 17 1.88 1.10 7 0.00 2 1.10 5 1 0 1 0.0 0 2
Jan 18 1.72 0.54 14 0.01 2 0.53 12 1 1 0 0.1 1 2
Feb 18 1.83 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 18 2.16 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 1
April 18 2.48 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 18 1.98 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 18 1.29 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 18 1.69 0.13 4 0.13 4 0.00 0 0 3 0 0.0 0 0
Aug 18 1.59 0.86 28 0.32 11 0.54 17 3 1 1 0.0 0 0
Sept 18 1.53 0.12 2 0.00 0 0.12 2 1 0 0 0.0 0 0
Water Year Totals: 21.71" 2.75" 103 days 0.46" 20 2.29" 83 days 6 5 days 2 days 0.1" 1 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
10/1/2017
10/2/2017
10/3/2017
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017
10/9/2017
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017 **
10/16/2017 **
10/17/2017 **
10/18/2017 **
10/19/2017 **
10/20/2017 **
10/21/2017 **
10/22/2017 **
10/23/2017 **
10/24/2017 **
10/25/2017 **
10/26/2017 **
10/27/2017 **
10/28/2017 **
10/29/2017 **
10/30/2017 **
10/31/2017 **
11/1/2017 **
11/2/2017 **
11/3/2017 **
11/4/2017 **
11/5/2017 **
11/6/2017 **
11/7/2017 **
11/8/2017 **
11/9/2017 **
11/10/2017 **
11/11/2017 **
11/12/2017 **
11/13/2017 **
11/14/2017 **
11/15/2017 **
11/16/2017 **
11/17/2017 **
11/18/2017 **
11/19/2017 **
11/20/2017 **
11/21/2017 **
11/22/2017 **
11/23/2017 **
11/24/2017 **
11/25/2017 **
11/26/2017 **
11/27/2017 **
11/28/2017 **
11/29/2017 **
11/30/2017 **
12/1/2017 **
12/2/2017 **
12/3/2017 **
12/4/2017 **
12/5/2017 1.10
12/6/2017 T
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017
12/17/2017 0.00
12/18/2017
12/19/2017
12/20/2017
12/21/2017
12/22/2017
12/23/2017
12/24/2017
12/25/2017
12/26/2017
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018 0.00
1/2/2018 **
1/3/2018 **
1/4/2018 **
1/5/2018 **
1/6/2018 **
1/7/2018 **
1/8/2018 **
1/9/2018 **
1/10/2018 **
1/11/2018 **
1/12/2018 **
1/13/2018 0.53
1/14/2018 0.01
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018 0.00
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018
5/20/2018
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018
6/20/2018
6/21/2018
6/22/2018
6/23/2018
6/24/2018
6/25/2018
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018 0.03
7/22/2018
7/23/2018
7/24/2018
7/25/2018
7/26/2018
7/27/2018
7/28/2018
7/29/2018 0.03
7/30/2018 0.07
7/31/2018 0.00
8/1/2018 0.00
8/2/2018 0.00
8/3/2018
8/4/2018 0.32
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018 0.00
8/10/2018 0.00
8/11/2018 0.00
8/12/2018 0.00
8/13/2018 T
8/14/2018 0.00
8/15/2018 0.00
8/16/2018 0.00
8/17/2018 **
8/18/2018 **
8/19/2018 **
8/20/2018 **
8/21/2018 **
8/22/2018 0.28
8/23/2018 **
8/24/2018 **
8/25/2018 **
8/26/2018 0.10
8/27/2018 **
8/28/2018 **
8/29/2018 **
8/30/2018 **
8/31/2018 **
9/1/2018 **
9/2/2018 0.12
9/3/2018
9/4/2018
9/5/2018
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
12/6/2017 7:00 AM T T M 6.0 M 1206170700 SU27 Sc BKN SW- New T SWE T Depth 4-9 Avg 6 inches Tmxmn 25 -2ºF
12/17/2017 8:00 AM 0.00 0.0 M 6.0 M Temp range 35 to -5ºF S facing slopes 70% cover Valley 4-12 inches deep
1/1/2018 7:00 AM 0.00 0.0 M 9.0 M 0101170700 SU27 Cs OVC Depth 6-12 avg 9.0 inches wind packed Tmxmn 48 -6ºF 6-31 DEC 2017
1/14/2018 7:00 AM 0.01 0.1 M 10.0 M 0114180700 SU27 New 0.1 SWE 0.01 Depth 6-15 avg 10 inches total SWE 1-14 JAN 2018 0.53 inches N side of valley 12-18 inch depth Moose in willows
3/12/2018 7:00 AM 0.00 0.0 M 18.0 M 0312180700 EDW CoSu27 Sc BKN Depth 18.0 (12-24) inches solid pack
7/21/2018 8:00 AM 0.03 0.0 M 0.0 M RW- 1710-1740 VERT DRY Dusty KH HIGH Fire Danger
7/29/2018 6:00 AM 0.03 M M M M RW- -
7/30/2018 6:00 AM 0.07 0.0 M 0.0 M VERY DRY soils Tmx78 Tmn 38ºF
7/31/2018 6:00 AM 0.00 0.0 M 0.0 M CLR Cu SCT All Day Tmin 38ºF
8/1/2018 7:00 AM 0.00 0.0 M 0.0 M 0801180600 Ac BKN KH 10 mi Tmxmn 85 37ºF Extremely dry dusty
8/2/2018 6:00 AM 0.00 0.0 M 0.0 M KH X
8/4/2018 8:30 AM 0.32 0.0 M 0.0 M 0804180830 SU27 QPE 0.32 inches Wet ground Tmxmn 81 37F
8/9/2018 6:00 AM 0.00 0.0 M M M Cs SCT VERY DRY
8/10/2018 8:00 AM 0.00 0.0 M M M CLR
8/11/2018 6:00 AM 0.00 0.0 M M M CLR DRY cool
8/12/2018 6:00 AM 0.00 0.0 M M M CLR 20+ mi
8/13/2018 6:00 AM T 0.0 M 0.0 M 0813180600 SU27 CLR KH 10 MI Tmxmn 85 41ºF Cu Cu+ W 0+20 KT VIRGA microbursts 1630-1800 T
8/14/2018 8:30 AM 0.00 0.0 M 0.0 M 0814180830 SU27 CLR KH -X
8/15/2018 7:00 AM 0.00 0.0 M M M
8/16/2018 6:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/15/2017 12/05/2017 4:00 PM 52 1.10 6.0 M Snow cover in Boulder Creek Valley is much deeper and extensive than above Silverthorne. Precip gauge had much evaporation during period. Silverthorne SU6 Belfort Gauge had total accumulation of ~> 3.65 inches, filling bucket.
1/2/2018 1/13/2018 11:00 AM 12 0.53 10.0 M 0114180700 SU27 New 0.1 SWE 0.01 Depth 6-15 avg 10 inches total SWE 1-14 JAN 2018 0.53 inches N side of valley 12-18 inch depth Moose in willows
8/17/2018 8/20/2018 7:00 AM 4 0.16 0.0 0.00 Cool Tmxmn 89 36ºF
8/19/2018 8/22/2018 4:00 PM 4 0.28 0.0 0.00 0823180700 SU27 QPE sum 4 days 0.28 inches Tmxmn 82 35ºF
8/23/2018 8/26/2018 1:00 PM 4 0.10 M M Tmxmn 81 38ºF ground dusty
8/27/2018 9/02/2018 3:00 PM 7 0.12 M M very dry Tmxmn 83 35ºF



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