Station Overview Station Location
Station Number CO-SU-6 Latitude 39.6239
Station Name Silverthorne 2.1 WSW Longitude -106.1018
County Summit Elevation (ft) 9684



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 1.36 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 16 1.60 0.05 1 0.05 1 0.00 0 0 1 0 1.0 1 1
Dec 16 2.03 3.66 23 3.66 23 0.00 0 0 16 1 52.2 16 23
Jan 17 1.36 5.51 30 5.51 30 0.00 0 0 19 2 93.5 19 30
Feb 17 1.39 2.40 28 2.40 28 0.00 0 0 14 1 29.2 14 28
March 17 2.17 1.40 31 1.40 31 0.00 0 0 11 3 17.7 11 31
April 17 2.00 0.86 14 0.86 14 0.00 0 0 6 0 9.4 6 13
May 17 1.81 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 17 1.35 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 0
July 17 1.74 2.16 30 2.16 30 0.00 0 0 11 5 0.0 0 0
Aug 17 2.23 1.46 30 1.46 30 0.00 0 0 15 2 0.0 0 0
Sept 17 1.58 0.41 11 0.41 11 0.00 0 0 4 1 0.0 0 0
Water Year Totals: 20.62" 17.91" 199 days 17.91" 199 0.00" 0 days 0 97 days 15 days 203.0" 67 days 126 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 0.05
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 0.67
12/10/2016 0.03
12/11/2016 0.71
12/12/2016 0.02
12/13/2016 0.01
12/14/2016 0.13
12/15/2016 0.23
12/16/2016 0.01
12/17/2016 1.18
12/18/2016 0.02
12/19/2016 T
12/20/2016 0.00
12/21/2016 0.00
12/22/2016 0.01
12/23/2016 0.31
12/24/2016 0.00
12/25/2016 0.12
12/26/2016 0.10
12/27/2016 0.00
12/28/2016 0.10
12/29/2016 0.01
12/30/2016 0.00
12/31/2016 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2017
1/2/2017 T
1/3/2017 0.08
1/4/2017 0.17
1/5/2017 0.94
1/6/2017 0.25
1/7/2017 0.00
1/8/2017 0.17
1/9/2017 0.43
1/10/2017 0.96
1/11/2017 0.51
1/12/2017 0.38
1/13/2017 0.00
1/14/2017 T
1/15/2017 0.01
1/16/2017 0.15
1/17/2017 0.00
1/18/2017 0.00
1/19/2017 0.00
1/20/2017 0.20
1/21/2017 0.07
1/22/2017 0.15
1/23/2017 0.25
1/24/2017 0.48
1/25/2017 0.07
1/26/2017 0.23
1/27/2017 0.01
1/28/2017 0.00
1/29/2017 0.00
1/30/2017 0.00
1/31/2017 0.00
2/1/2017 0.00
2/2/2017 0.00
2/3/2017 0.12
2/4/2017 0.05
2/5/2017 0.02
2/6/2017 0.00
2/7/2017 0.03
2/8/2017 0.71
2/9/2017 0.11
2/10/2017 0.00
2/11/2017 0.02
2/12/2017 0.21
2/13/2017 T
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.00
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 0.00
2/20/2017 0.39
2/21/2017 0.00
2/22/2017 0.00
2/23/2017 0.03
2/24/2017 0.16
2/25/2017 0.17
2/26/2017 0.06
2/27/2017 0.00
2/28/2017 0.32
3/1/2017 0.13
3/2/2017 0.00
3/3/2017 0.00
3/4/2017 0.00
3/5/2017 0.00
3/6/2017 0.15
3/7/2017 0.06
3/8/2017 0.01
3/9/2017 0.00
3/10/2017 0.00
3/11/2017 0.04
3/12/2017 0.00
3/13/2017 0.02
3/14/2017 0.00
3/15/2017 0.00
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.00
3/19/2017 0.00
3/20/2017 0.00
3/21/2017 0.00
3/22/2017 0.00
3/23/2017 0.00
3/24/2017 0.17
3/25/2017 T
3/26/2017 0.07
3/27/2017 T
3/28/2017 0.18
3/29/2017 0.56
3/30/2017 T
3/31/2017 0.01
Day of YearDaily PrcpMultiday Prcp
4/1/2017 0.06
4/2/2017 0.02
4/3/2017 0.22
4/4/2017 0.45
4/5/2017
4/6/2017 0.00
4/7/2017 0.00
4/8/2017 0.00
4/9/2017 0.09
4/10/2017 0.02
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 0.00
4/14/2017 0.00
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 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.00
7/2/2017 0.00
7/3/2017 0.00
7/4/2017 0.03
7/5/2017 0.00
7/6/2017 0.00
7/7/2017 T
7/8/2017 0.03
7/9/2017 T
7/10/2017 0.00
7/11/2017 0.38
7/12/2017 0.44
7/13/2017 0.68
7/14/2017 T
7/15/2017 0.01
7/16/2017
7/17/2017 0.00
7/18/2017 0.00
7/19/2017 0.00
7/20/2017 0.14
7/21/2017 0.00
7/22/2017 0.11
7/23/2017 0.00
7/24/2017 0.00
7/25/2017 T
7/26/2017 0.06
7/27/2017 0.00
7/28/2017 T
7/29/2017 0.15
7/30/2017 0.13
7/31/2017 0.00
8/1/2017 0.02
8/2/2017 0.14
8/3/2017 0.03
8/4/2017 0.02
8/5/2017 0.00
8/6/2017 0.07
8/7/2017 0.01
8/8/2017 0.20
8/9/2017 0.24
8/10/2017 0.18
8/11/2017 0.00
8/12/2017
8/13/2017 0.07
8/14/2017 0.01
8/15/2017 0.18
8/16/2017 0.03
8/17/2017 0.00
8/18/2017 T
8/19/2017 0.00
8/20/2017 0.00
8/21/2017 0.00
8/22/2017 0.00
8/23/2017 0.00
8/24/2017 0.04
8/25/2017 0.22
8/26/2017 0.00
8/27/2017 0.00
8/28/2017 0.00
8/29/2017 0.00
8/30/2017 0.00
8/31/2017 T
9/1/2017 0.22
9/2/2017 0.00
9/3/2017 0.00
9/4/2017 0.00
9/5/2017 0.00
9/6/2017 0.00
9/7/2017 0.00
9/8/2017 T
9/9/2017 0.02
9/10/2017 0.01
9/11/2017 0.16
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
11/30/2016 8:00 AM 0.05 1.0 M 6.5 M 1130160800 Sc St BKN v SCT 5 mi SCT SW- 13 73% RH Calm + NW 5 KTS DEPTH 5-7 INCHES EST NEW 1 OROGRAPHIC SW- ALL DAY
12/9/2016 8:50 AM 0.67 7.0 M 20.0 M 1209160850 Ns S- BS- 28 88% .5 S F W 5+20 KTS Tmxmn 22 28ºF New 5-8 Avg 7 QPE 0.67 IN DEPTH 18-30 Drifts avg 20 inches
12/10/2016 8:00 AM 0.03 0.5 M 20.0 M 1210160800 Ac BKN AcL N 20+mi BS+ 38 39% SW 16+35 kts Tmxmn 38 22 0.5 NEW QPE 0.03 SEND 1400 SW— Depth 18-30 Drifting avg 20 inches snow boards 1-3 inch drifted
12/11/2016 8:00 AM 0.71 11.5 M 22.5 M 1211160800 Ns S-BS+2 mi 24 78% WSW 9+36 kts Blowing and drifting snow NEW 11.5 SWE 0.71 Depth 22.4 (10-28) inches Snowboards 10-14 drifting SBGN 0930 SW SW+ SCT S- v S+ 1500-0500
12/12/2016 8:30 AM 0.02 0.2 M 19.6 M 1212160830 As PRECIP Ceiling 20+mi 27 43% W 5+39 KTS Tmxmn 32 22 Sc Ac OVC SW- BS+ All Day New 0.2 SWE 0.02 Depth 19.6 (13-26) inches Snowboards 0-4 inch drifting BS`
12/13/2016 8:00 AM 0.01 0.1 M 18.0 M 1213160800 As OVC PRECIP Ceiling 20+mi 22 36% RH WSW2+32 KTS Tmxmn 29 19 BS Drifting All DAY SW— 1900-1915 NEW 0.1 SWE 0.01 Depth 18.0 (13-24) inches
12/14/2016 8:30 AM 0.13 3.0 M 19.6 M 1214160830 NsX S- 0.4mi 22 87% RH SW 2 + W 32 KTS Tmxmn 26 16ºF BS BS+ ALL DAY New 3.0 QPE 0.13 Depth 19.6 (14-27) INCHES BS+ HEAVY DRIFTING AND TRANSPORT of snow to Drifts, Snow boards 1-4.5; 4-7; 2.5-3.5 inches
12/15/2016 7:45 AM 0.23 3.5 M 19.8 M 1215160745 As OVC 20+mi 38 43% W 11+42 KTS Tmxmn 38 19 BS+ Drifting S-BS+ All DAY New 3.5 SWE 0.23 Depth 19.8 (13-29) INCHES DRIFTING SCOURING Snowboards 2-6; 4-8 inches SBGN 0300-2330 max 0950-1110
12/16/2016 8:55 AM 0.01 0.2 M 18.4 M 1216160850 Ns X S 0.3 mi 33 85% N 3+W40 KTS TMXMN 41 31 BS+ ALL DAY DRIFING SCOURING, SUBLIMATION NEW 0.2 SWE 0.01 DEPTH 18.4 (12-27) INCHES SW—0530; SBGN 0830 10 mm dentritic aggregates
12/17/2016 8:30 AM 1.18 14.5 M 29.8 M 1217160830 Ns S— 0.5 mi 11 88% RH N 4+W 20Kts Tmxmn 35 10ºF SBGN 0750 S+ 1800-2300 End 0300 then fine .1 mm crystals New 14.5 SWE 1.18 Depth 29,8 (23-39) inches Snow boards 11.5-18; 12-21 inches Deck 14.5 Wet large dendritic aggregates 5-10 mm most of day
12/18/2016 8:00 AM 0.02 0.5 M 28.8 M 1218160800 St F Valley Sc IF 3mi -1 84% Calm + N 16 Kts Tmxmn 16 -9ºF Ns SW— all day New 0.5 SWE 0.02 Depth 28.8 inches fine 0.1mm plates
12/19/2016 8:00 AM T T M 27.0 M 1219160800 CLR 20+MI 2 73% CALM + N 12 KTS TMXMN 16 -9ºF Sc crystals 0700-1000 CLR 1000-0700 T new DEPTH 27.0 (20-36) INCHES
12/20/2016 8:55 AM 0.00 0.0 M 23.8 M 1220160855 ACL OVC BKN 20+MI 32 38% RH N 3+25KTS Tmxmn 32 -4 CLR All day Depth 23.8 (18-32) inches Sublimation and compaction
12/21/2016 8:00 AM 0.00 0.0 M 22.2 M 1221160800 AC CS BKN 20 MI 32 26% RH W 7+ 28 KTS Tmxmn 39 19ºF AcL AM CLR PM Depth 22.2 (17-30) inches
12/22/2016 8:00 AM 0.01 0.1 M 21.4 M 1222160800 As OVC 20 mi 25 77% RH Calm + W 24 Kts Tmxmn 36 24ºF Ac BKN Ns SCT SW- on ridge tops SWBGN 11-12 0.1 New SWE o.o1 Depth 21.4 (16-29) inches
12/23/2016 8:55 AM 0.31 6.5 M 26.2 M 1223160850 Sc BKN v SCT 20+ 26 81% RH N 3+W 6 Kts Tmxmn 38 23 As OVC all day SCT SW- SBGN 2015-0750 max 2150-2230 & 0215-0330 New 6.5 SWE 0.31 Depth 26.2 (21-35) inches Snowboards 4-8.5 inches avg 6.5 large dendritic aggregates 5-10 mm dia
12/24/2016 7:00 AM 0.00 0.0 M 23.8 M 1224160700 CLR 20+MI 25 60% CALM + NW 15 KTS Tmxmn 36 18ºF Sc BKN to SCT AM CLR PM DEPTH 23.8 (19-31) INCHES
12/25/2016 8:00 AM 0.12 2.0 M 22.4 M 1225160800 Ns X S-BS+ .5 mi v 2 mi 16 77% W 15+28 Kts Tmxmn 42 16 SBGN 2130 -0800 BS+ difficult to measure New 2.0 (0-3) SWE 0.12 (0.06-0.15) Snowboards 0-3 inches Depth 22.4 (17-30) Melting and compaction yesterday CLR all day
12/26/2016 8:00 AM 0.10 1.5 M 21.2 M 1226160800 Ns SW- 1 mi 16 88% WSW 15+35 KTS TMXMN 16 8ºF BS+ S- ALL DAY DRIFTING SCOURING NEW ~1.5 SWE 0.10 DEPTH 21.2 (14-27) INCHES SNOW BOARD .5-1; 1.5-3.5 INCHES
12/27/2016 6:00 AM 0.00 0.0 M 21.0 M 1227160600 CLR 20+MI 3 63% CALM + W 12 TMXMN 20 2ºF AM SW- SCT VERY COLD PM CLR DEPTH 14-27 AVG 21.0 INCHES
12/28/2016 8:00 AM 0.10 1.0 M 19.8 M 1228160800 Ns x S- BS 0.2 to 2.0 mi 24 84% W 9+26 Kts Tmxmn 39 1ºF CLR Ac SCT All day New 1.0 SWWE 0.10 Depth 19.8 (14-29) inches Drifting Snow Boards 0-3; 0-1.5; 0-1 inches SW BGN 0015 max 0600-0800
12/29/2016 8:00 AM 0.01 0.1 M 20.6 M 1229160800 CLR 20+MI 22 58% CALM + NW 42 KTS BS+SW--V SW ALL DAY NEW 0.1 SWE 0.01 DRIFTING, SCOURING DEPTH 20.6 (13-29) INCHES SNOW BOARDS BLOWN CLEAR
12/30/2016 8:55 AM 0.00 0.0 M 19.8 M 1230160850 CLR 20+MI 36 21% NE 4+W 16 KTS TMXMN 36 12 CLR ALL DAY DEPTH 19.8 (12-28) INCHES
12/31/2016 7:00 AM 0.00 0.0 M 19.0 M 1231160800 Sc SCT 20+MI 25 60% NW 2+W 32 KTS TMXMN 43 20ºF CLR AM Ac BKN PM Windy Drifting Depth 19.0 (12-27) inches
1/2/2017 8:30 AM T T M 18.8 M 0102170830 Ns SW— As BKN 6 mi 24 55% SSE 2+ W 19 Kts Tmxmn 33 9ºF CLR AM FEW Sc SCT PM T NEW SWE T DEPTH 18.8 (12-26) inches
1/3/2017 6:30 AM 0.08 1.8 M 20.8 M 0103170630 Ns S- - F 1 mi 18 80% SW 6+19 Kts Tmxmn 29 18 Sc Ns OVC SW—- all day SBGN 0055 - 0300 S- - - 03-06 NEW 1.8 SWE 0.08 DEPTH 20.8 (14-28) INCHES
1/4/2017 8:30 AM 0.17 3.0 M 23.2 M 0104170830 Ns S .3 mi 22 83% WSW 4+29 Kts Tmxmn 22 16 SW- - ALL DAY NEW 3.0 SWE 0.17 Depth 23.2 (17-32) inches drifting BS- Snow boards 2-5; 3-7; 4-5 inches 5mm dendritic aggregates
1/5/2017 8:40 AM 0.94 20.2 M 38.4 M 0105170840 Ns S V S+ .2 mi 7 88% RH N 4+29 Kts Tmxmn 25 7ºF SNOW - v S+ bands all day New 20.2 SWE 0.94 Depth 38.4 (31-49) inches Snow boards 16-22 avg 21 inches Drifting 5-10 mm Dendritic aggregates changed to 2-3 mm plates needles CFRNT pass 0130 Max 1330-1530 and 0230-0530
1/6/2017 8:55 AM 0.25 2.3 M 37.0 M 0106170855 CLR 20+ MI -6 85% RH CALM + SW 31 KTS TMXMN 26 -14ºF Ns S— S- all day New 2.3 SWE 0.25 Depth 37.0 (30-47) INCHES Snowboards 2.0-2.8 inches fine plates 1-3 mm
1/7/2017 8:00 AM 0.00 0.0 M 35.2 M 0107170800 Cs BKN 20+mi 2 76% RH Calm + N 8 Kts Tmxmn 14 -14ºF CLR COLD all day Depth 35.2 (29-46) inches settling of very light dry layer (20 inch depth)
1/8/2017 8:30 AM 0.17 2.0 M 31.6 M 0108170830 Ns X S- .5 mi 26 89% NNE 3+W 22Kts Tmxmn 26 -7ºF CLR AM Cs As Ns PM SW- BGN 2100 S- v S 0600-0830 New 2.0 SWWE 0.17 Depth 31.6 (25-41) SBoards 1.5-5; 2-6.5 inches Drifting BS- 0900-1700 drifting and compaction Dendrites 1-3 mm and dent Aggregates 3-5 mm + fractals
1/9/2017 8:30 AM 0.43 6.5 M 35.4 M 0109170830 NsX S-F 33 90% SSE 3+W 22Kts Tmxmn 37 23 ºF Ns S- vS+ ALL DAY Max1715-1930 Heavy wet snow Consolidation over night 27 drop to 25 in depth New 6.5 SWE 0.43 Depth 35.4 (30-44) snow boards 4-6; 4.5-7.5 inches; cylinder 1/2 melted S-- 2300-0600 37ºF
1/10/2017 8:00 AM 0.96 15.2 M 45.4 M 0110170800 Ns -X S— 3 mi 21 83% RH N 4+28 Kts Tmxmn 37 18ºF S v S+ all day 3 Heavy bands 1130-1320; 1410-1530; 2030-0120 max; New 15.2 SWE 0.96 Depth 45.4 (38-55) inches snow boards drifting 11.5-15; 14-17; 12-14 inches avg 15.2 WxSTN has most snow around it ever 4-5 ft deep
1/11/2017 8:30 AM 0.51 10.5 M 49.8 M 0111170830 Ns X S- .3 mi 25 90% RH Calm + SW 21 Kts Tmxmn 25 17ºF S - - v S ALL DAY New 10.5 SWE 0.51 Depth 49.8 (42-61) inches Snow boards 7-11; 8.5-13.8; 6-8 inches Max 0745-0820; 2330-0100
1/12/2017 8:30 AM 0.38 8.2 M 48.2 M 0112170830 As OVC 20+mi 23 88% RH CALM + W 25 Kts Tmxmn 28 21 S-v S ALL DAY FROPA 1620 S+ BS+ 1620-1745 S END 0030 New 8.2 SWE 0.38 Depth 48.2 (41-58) inches snowboards 6.2-; 7.5-9.9; 5.5-7.5 BS+ Drifting and Consolidation
1/13/2017 8:30 AM 0.00 0.0 M 45.8 M 0113170840 Sc SCT Cs BKN 20+mi 30 76% Calm + W 13 Kts Tmxmn 33 17ºF As OVC all day few BKN spot Depth 45.8 (39-55) inches consolidation+melting
1/14/2017 8:45 AM T T M 44.6 M 0114170845 Ac SCT v BKN Cs BKN v OVC 20+mi 25 76% RH Calm + SW 13 Kts Tmxmn 36 15ºF Melting and compaction Depth 44.6 (38-53) inches SW- - - 2320-2340
1/15/2017 8:50 AM 0.01 0.1 M 44.4 M 0115170850 Cs OVC 20+mi 30 76% calm + NW 5 Kts Tmxmn 32 14ºF SW - - New 0.1 SWE 0.01 Depth 44.4 (38-52) inches SW - - 1700-1740 Large dendritic aggregates
1/16/2017 8:00 AM 0.15 1.4 M 43.2 M 0116170800 Ns X S— F 24 86% Calm + NE 6 Kts Tmxmn 36 17ºF As BKN ALL Day S- - BGN 1900 New 1.4 SWE 0.15 Depth 43.2 (36-51) inches tiny stellar dentrites 0.5 to 1.0 mm
1/17/2017 8:50 AM 0.00 0.0 M 42.0 M 0117170850 St OVC 4 mi F 17 89% Calm + ENE 6 KTS TMXMN 32 17ºF Cs As OVC all day Depth 42.0 (36-50) INCHES
1/18/2017 7:00 AM 0.00 0.0 M 40.8 M 0118170700 CLR 20+MI 8 88% RH CALM + N 6KTS TMX 32 12ºF St OVC dissipate to few Cu and CLR PM Depth 40.8 (35-48) INCHES Settling and melting
1/19/2017 7:00 AM 0.00 0.0 M 39.8 M 0119170700 CLR 20+MI 8 89% RH CALM + N 7 KTS TMSMN 32 6ºF CLR ALL DAY Depth 39.8 (35-47) INCHES
1/20/2017 8:50 AM 0.20 3.0 M 41.8 M 0120170850 Ns S 0.5 mi 23 86% RH CALM + NE 11 KTS TMXMN 39 7ºF SBGN 2100 New 3.0 SWE 0.20 Depth 41.8 (35-50) INCHES CLR Cs SCT all day
1/21/2017 8:30 AM 0.07 1.1 M 42.2 M 0121170830 As BKN Cs BKN 20+mi 12 78% RH Calm + W 10Kts Tmxmn 26 12 Ns SW S 0600-1300 SW— 1300-1900 CLR 2000-2300 New 1.1 SWE 0.07 Depth 42.2 (36-50) inches
1/22/2017 8:50 AM 0.15 2.6 M 43.0 M 0122170850 Ns S- 1 mi 17 75% Calm+N9 Kts Tmxmn 31 8ºF Ns S- SW- SCT AM SBGN 1700 -0850+ New 2.6 SWE 0.15 DEPTH 43.0 (36-51) INCHES
1/23/2017 8:00 AM 0.25 6.3 M 45.4 M 0123170800 Ns X S S- 0.2 mi 25 89% RH Calm + W 11 Kts Tmxmn 24 12 Ns S- SW- AM Sc BKN 1100-1600 SBGN 1900 max 2200-2230 New 6.3 SWE 0.25 Depth 45.4 (39-52) inches 2-4 mm dendrites few aggregates 4-6mm DRY snow Snow boards 5.5-6.5; 6-8 inches avg 6.3
1/24/2017 8:50 AM 0.48 6.1 M 48.8 M 0124170850 Ns S .1 mi 17 85% Calm + W 14 Kts Tmxmn 27 5ºF S S+ BANDS 1300-1600 New 6.1 SWE 0.48 Depth 48.8 (42-57) inches 01222017: XC 26-53 INCHES 1.84 KM LOOP 18 points
1/25/2017 8:00 AM 0.07 1.0 M 48.2 M 0125170800 Ns SW- SCT 4 mi 3 82% Calm + N 10 Kts Tmxmn 21 2ºF Ns SW- - All Day New 1.0 SWE 0.07 Depth 48.2 (42-57) inches Snow boards 0.8-1.1; 1.0-1.1; 0.5-0.8 inches SW 1-3 mm dendrites, occasional aggregates 3-8 mm Max 1500-1510 mst
1/26/2017 8:45 AM 0.23 2.1 M 48.6 M 0126170845 Ns BKN SUN dim VIS 1.5 mi SW- - - 2 78% Calm + N (Kts Tmxmn 13 -1ºF New 2.1 SWE 0.23 Depth 48.6 (42-58) SB 2.3-2.0; 1.8-2.2; 1.5-1.8 INCHES fine 1-2 mm stellar dendrites S- - All day tiny crystals, fractals 0.1-1 mm
1/27/2017 8:55 AM 0.01 0.1 M 45.2 M 0127170855 As SCT 20+mi 2 67% 20+mi Calm + N 9 Kts Tmxmn 9 - 13ºF Sun Dim Vis all day SW- - - New 0.1 SWE 0.01 Depth 45.2 (40-54) inches compaction-2-4 inches
1/28/2017 8:30 AM 0.00 0.0 M 42.6 M 0128170830 As BKN 20+mi 6 72% Calm + NE 6 KTS Tmxmn 18 -4ºF CLR to thin orographic As on peaks Depth 42.6 (37-52) inches snow compaction
1/29/2017 8:00 AM 0.00 0.0 M 42.6 M 0129170800 Cs SCT 20+mi 7 87% RH Calm + N 10 Kts Tmxmn 26 -4ºF As BKN Clrg to CLR PM Depth 42.6 (37-52) INCHES
1/30/2017 8:50 AM 0.00 0.0 M 43.0 M 0130170850 Cs SCT 20+mi 32 56% RH Calm + NE 10 Ks Tmxmn 34 6ºF Cs SCT all DAY Depth 43.0 (36-51) INCHES MELT AND COMPACTION
1/31/2017 8:55 AM 0.00 0.0 M 40.3 M 0131170855 Ac SCT 20+mi 35 32% RH W 5+19 KTS TMXMN 39 13ºF CLR Cs SCT v BKN all day Depth 40.3 (34-46) INCHES MELTING, SUBLIMATION AND COMPACTION
2/1/2017 8:00 AM 0.00 0.0 M 38.2 M 0201170800 Ac BKN 20+ mi 29 44% WNW 5+30 Kts Tmxmn 40 29ºF AcL SCT v BKN all day BS BS+ Drifting Depth 38.2 (32-45) inches Sublimation, Melting
2/2/2017 8:30 AM 0.00 0.0 M 37.2 M 0202170830 Ac Sc Precip Ceiling 15 mi 33 38% WSW 4 + W 45 Kts Tmxmn 40 28 BS+ Drifting AcL SCT v BKN all day Depth 37.2 (31-44) inches
2/3/2017 8:50 AM 0.12 2.5 M 38.4 M 0203170850 Cs SCT 20+mi 28 63% Calm + W 21 Kts Tmxmn 33 22 SW- - AM S- BGN 1200-2130 max 1810-1830 New 2.5 SWE 0.12 Depth 38.4 (32-46) inches SB 1.4-2.2; 1.8-3; 1.8-2.0
2/4/2017 8:40 AM 0.05 1.0 M 37.0 M 0204170840 Ns SW- 2 mi 30 64% W 9+29 Kts Tmxmn 41 17ºF Cs SCT v BKN all day SBGN 2010 SW- - SW- all night BS+ Drifting New ~1.0 SWE 0.05 Depth 37 (31-44) inches Snow Boards 0-0; 0-1.2; 0-.5 inches Belfort Gauge 0.05 inches DENWater 0.02 inches Davis 0.0
2/5/2017 8:40 AM 0.02 0.2 M 36.4 M 0205170840 Cs BKN 20+mi 33 56% RH W 1 + 29 KTS TMXMN 36 24 AM BS BS+ SW BANDS NEW 0.2 SWE 0.02 DEPTH 6.4 (30-44) Snow Boards 0-0; 0-.8; 0-.5 inches Drifting+
2/6/2017 7:40 AM 0.00 0.0 M 35.8 M 0206170740 Cu SCT 20+ 31 45% WNw 3+18 Kts Tmxmn 45 30 Cs SCT All DAY Sublimation, melting Depth 35.8 (30-42 ) inches
2/7/2017 8:55 AM 0.03 1.0 M 37.2 M 0207170855 Ns S+ .2 mi 32 86% RH SSE 1+ NW 29 Kts Tmxmn 36 23ºF SBGN 1930 S- - SigSnow 0750-0855+ New 1.0 SWE 0.03 Depth 37.2 (31-44) large 10-15mm aggregates
2/8/2017 8:00 AM 0.71 6.1 M 40.4 M 0208170800 Ns S- F 0.5 mi 27 82% NNE 6+24 KTS TMXMN 33 27ºF SBGN 0750 MAX 2030-2220 S+ BS NEW 6.1 SWE 0.71 DEPTH 40.4 (33-49) INCHES BS+ DRIFTING Snow boards: 1.8-6; 3.5-8; 2.5-6 periods of SP, Dendritic aggregates 5-15mm, fine crystals dendrites, WxSTN deck now level with snow surface 4 ft deep; Bands of S- v S+ all day; driveway 6-8 inches drifts to 14 inches Power out 3.5 hours
2/9/2017 8:00 AM 0.11 1.2 M 40.4 M 0209170800 AcL Cs BKN 20+mi 37 67% RH WNW4+19 Kts Tmxmn 33 29ºF SW- int S- - all day AcL BKN 1600-2200 New 1.2 SWE 0.11 Depth 40.4 (34-49) inches Snow boards .5-2.2;.8-1.5; 1.0-2.5 BS Drifting
2/10/2017 8:00 AM 0.00 0.0 M 36.6 M 0210170800 AcL SCT v BKN 20+mi 44 42% RH WSW 6+37 Kts Tmxmn 47 31ºF Windy all day Rapid Melting, Sublimation: Depth 36.6 (31-44) inches
2/11/2017 7:00 AM 0.02 0.1 M 33.8 M 0211170700 Ns SW- - 4 mi Snow South X 37 68% SSE 2+W 37 Kts Tmxmn 52 37ºF WARM Melting and Sublimation New 0.1 SWE 0.02 Depth 33.8 (27-42) RW—- 2000-2015 misty 6ºC
2/12/2017 8:00 AM 0.21 1.3 M 33.8 M 0212170800 Ns OVC SW- - 2 mi 27 85% RH S 1+ N 16 Kts Tmxmn 40 24ºF Ns OVC all day occasional SW- SW- - New 1.3 SWE 0.21 Depth 33.8 (28-40) icy surface under new snow Snow Boards moved with high winds 1.0-1.6, 1.1-1.5, 1.0-1.5 Crusty snow from melting
2/13/2017 7:00 AM T T M 32.6 M 0213170700 St OVC ceiling 500 ft 8 mi 27 86% RH Calm + SE 7 Kts Tmxmn 40 21 Ns Sc OVC all day SCT SW- - SP— New T SWE T Depth 32.6(27-39) inches melting sublimation
2/14/2017 8:55 AM 0.00 0.0 M 32.6 M 0214170855 CLR 20+MI 25 53% CALM + N 8 Kts Tmxmn 35 9ºF Ns Sc SCT SW- - all day Depth 32.6 (27-39) inches
2/15/2017 8:30 AM 0.00 0.0 M 32.4 M 0215170830 CLR 20+MI 26 48% CALM + N 10Kts Tmxmn 35 9ºF CLR Cs SCT all day Depth 32.4 (27-39) inches solid snow pack
2/16/2017 8:00 AM 0.00 0.0 M 32.0 M 0216170800 CLR 20+ MI 30 34% RH CALM + N 12 KTS Tmxmn 42 9ºF CLR ALL DAY HARD PACK DEPTH 32.0 (26-39) MELTING AND SUBLIMATION
2/17/2017 8:55 AM 0.00 0.0 M 31.6 M 0217170855 Ac OVC 20 mi 27 50% RH SE 1+N9 Kts Tmxmn 49 15ºF CLR all day Depth 31.6 (26-38) inches
2/18/2017 8:00 AM 0.00 0.0 M 30.8 M 0218170800 As Cs BKN 20+mi 30 74% RH Calm + E 6Kts Tmxmn 46 19ºF Ac BKN v SCT all day Depth 30.8 (26-37) inches melting sublimation
2/19/2017 8:00 AM 0.00 0.0 M 30.4 M 0219170800 AsOVC Blue S Horiz 20+mi 29 68% RH Calm + SE 13 Kts Tmxmn 46 25ºF As Cs SCT v BKN Ac SCT PM Depth 30.4 (25-36) inches melting sublimation
2/20/2017 8:00 AM 0.39 4.2 M 33.8 M 0220170800 CLR 20+ MI 28 66% RH CALM + SE 15 KTS TMXMN 44 18ºF As OVC 06-1000 Ac BKN Sc Cu+ BKN SW BGN 1300 SBGN 1430-2330 max 1715-1830 Dendritic aggregates 5-10 mm New 4.2 SWE 0.39 Depth 33.8 (28-39) inches
2/21/2017 8:50 AM 0.00 0.0 M 30.8 M 0221170850 Sc SCT v BKN 20+mi 40 46% WSW 8+35 Kts Tmxmn 40 19ºF CLR Cu SCT Depth 30.8 (25-36) inches High Winds 0030-0400
2/22/2017 7:00 AM 0.00 0.0 M 29.8 M 0222170700 Sc BKN 20+mi 31 50% RH SSW 2+18 Kts Tmxmn 48 31ºF Sc SCT v BKN AM As OVC 1500-2100 DEPTH 29.8 (24-35) inches MELTING + Sublimation
2/23/2017 8:00 AM 0.03 0.8 M 29.6 M 0223170800 Ns S S+ 0.1 mi 19 95% RH SE 5+21 Kts Tmxmn 44 19ºF Sc BKN v SCT all day SCT SW—- SBGN 0600 max 0745-0800+ New 0.8 SWE 0.03 Depth 29.6 (25-34) inches BS Drifting Snow boards 0.2 to 2.0 inches dendritic crystals 2-3mm dry, Snow hard pack compacted
2/24/2017 8:50 AM 0.16 2.1 M 31.4 M 0224170850 Ns S- 0.5 mi 12 77% SE 3+21 KTS TMXMN 28 9ºF Sc BKN v OVC all day SW—S- over night New 2.1 SWE 0.16 Depth 31.4 (26-36) inches Snow Boards 1.2-4; 1.5-3; 1.0-2 inches fine 1-3 mm crystals dendrites, fractals
2/25/2017 7:30 AM 0.17 2.7 M 32.6 M 0225170730 Ns SW- 1.0mi 1 85% RH W 10+20Kts Tmxmn 21 1ºF SW- v SW- - int S- All DAY Fine crystals 1-3 mm Dendrites Fragments New 2.7 SWE 0.17 Depth 32.6 (27-37) inches BS Drifting Snow boards 1.1-5.7; 0.5-4.3; 1.0-2.2 inches
2/26/2017 8:00 AM 0.06 1.5 M 32.2 M 0226170800 CLR 20+MI 5 48% RH NE 4+ W 26 KTS Tmxmn 14 -3ºF Ns SW- v SW+ BS BS+ All day Drifting New 1.5 SWE 0.06 Depth 32.2 (27-38) inches Snowboards 0-4; 0-5.8; 0-0.5 wind packed fine 1-2 mm crystals
2/27/2017 7:00 AM 0.00 0.0 M 31.0 M 0227170700 Ac Sc SCT BKN Ns S+ BGN 2215 NNE 1+15 Kts Tmxmn 32 2 ºF (reconstructed from digital records)Depth 31.0
2/28/2017 7:00 AM 0.32 4.5 M 33.0 M 0228170700 Ns S S+ 0100-0630 WSW 2+19 Kts Tmxmn 21 5 ºF New 4.5 SWE 0.32 Depth 33 (reconstructed from digital records) SBGN 2215 on 022717 max 2230-2330; 0215-0245
3/1/2017 7:00 AM 0.13 2.0 M 35.9 M 0301170700 Sc OVC Sc SCT CLR 20 mi 5 85% RH WNW 1+17Kts Tmxmn S-vS+ 0630-1630 on 022817 New 2.0 SWE 0.13 Depth 35.9 (31-41) inches (reconstructed from digital records)
3/2/2017 7:00 AM 0.00 0.0 M 35.4 M 0302170700 CLR Sc Orog on Peaks 20+mi 8 82% calm + W 17 Kts Tmxmn 26 4ºF DEPTH 35.4 (30-41) Sc SCT v BKN all day CLR PM
3/3/2017 8:55 AM 0.00 0.0 M 34.4 M 0303170855 Ac SCT 20+mi 31 25% RH Calm + N 12 Kts Tmxmn 33 4ºF CLR few Cu All day Depth 34.4 (29-40)
3/4/2017 7:00 AM 0.00 0.0 M 33.2 M 0304170700 CLR 20+MI 24 41% CALM + W 18 KTS TMXMN 41 12 AcL SCT CLR all day Depth 33.2 (27-38) INCHES melt and sublimation
3/5/2017 7:00 AM 0.00 0.0 M 32.0 M 0305170700 Ac SCT Cs BKN 20+mi 22 48% RH SW 5+19 Kts Tmxmn 47 15ºF CLR Am Ac SCT PM Depth 32.0 (26-36) inches, Melting and Sublimation snow pocketed, soft
3/6/2017 7:00 AM 0.15 3.2 M 33.6 M 0306170700 Ns X S+ F 0.1 mi 12 87% WNW 8+SE 35 (0245 FROPA) Tmxmn 44 12ºF SBGN 0310 max 0500-0700+ New 3.2 SWE 0.15 Depth 33.6 (28-38) inches BS Drifting Fine crystals 1-3 mm
3/7/2017 8:55 AM 0.06 1.2 M 33.6 M 0307170855 Ns BKN SW— 15 mi 17 51% RH W 15+ 53 Kts Tmxmn 31 6ºF BS BS+ SW- ALL DAY Drifting+ New 1.2 SWE 0.06 Depth 33.6 (28-39) inches snow boards: 0-3; 0-4.5; 0-0 inches; Max snow 0700-0830 on 030617 S- BS+ 0830-1130 SW- BS+ all afternoon - night
3/8/2017 8:00 AM 0.01 0.1 M 33.0 M 0308170800 Sc SCT20+ mi 32 52% RH WSW 9+31 Kts Tmxmn 32 6 SCT SW- - BS Drifting All day New 0.1 SWE 0.01 Depth 33.0 (27-39) inches
3/9/2017 7:00 AM 0.00 0.0 M 31.4 M 0309170700 Cs BKN 20+mi 35 41% RH WSW 10+31 Kts Tmxmn 42 23ºF Sublimation, melting Windy Very Dry all day Ac SCT v BKN Depth 31.4 (25-38) INCHES
3/10/2017 7:00 AM 0.00 0.0 M 30.0 M 0310170700 Ac Cs SCT 20+mi 35 47% RH W 7+ 31 Kts Tmxmn 47 31 ºF Sublimation Melting Windy all day Cs SCT v BKN Depth 30.0 (24-37) inches
3/11/2017 8:30 AM 0.04 0.5 M 29.2 M 0311170830 Ns SCT SW— 4 mi 35 73%RH N 2 + W 24 Kts Tmxmn 48 26ºF Ac SCT v BKN all day Windy, Sublimation, Melting, soft snow: New 0.5 SWE 0.04 Depth 29.2 (22-38) SW- 0500-0820
3/12/2017 8:30 AM 0.00 0.0 M 26.8 M 0312170830 Ns OVC Precip Ceiling SCT SW- 10 mi 34 49% RH SW 2 + E 15 Kts Tmxmn 46 27ºF Sc SCT Cs SCT PM Depth 26.8 (21-33) inches Rapid melting and Sublimation
3/13/2017 7:00 AM 0.02 0.2 M 27.0 M 0313170800 Ac SCT 20+mi 18 62% RH Calm + W 25 Kts Tmxmn 37 18ºF Ns OVC SW- - all day New 0.2 SWE 0.02 Depth 27.0 (21-33) inches Ns OVC SW- - all day 5-10 mm dendritic aggregates
3/14/2017 8:50 AM 0.00 0.0 M 26.0 M 0314170850 Ac Cs SCT 20+ mi 40 45% RH W 3+ N 18 Kts Tmxmn 43 16ºF Sc OVC all day cool Depth 26 (20-32) inches
3/15/2017 7:00 AM 0.00 0.0 M 26.2 M 0315170700 Cs SCT AcL SCT 20+mi 33 51% Calm + W 19 Kts Tmxmn 53 33ºF Ac Cs SCT all day RAPID Melting, runoff and Sublimation RH 27% Depth 26.2 (18-30) inches soft rotten snow
3/16/2017 8:00 AM 0.00 0.0 M 21.8 M 0316170800 AcL E BKN 20+ mi 39 38% RH WSW 4+ W 26 Kts Tmxmn 52 32 Ac Cs SCT CLR all day RAPID MELTING, Sublimation Depth 21.8 (14-28) INCHES 95% COVER
3/17/2017 8:50 AM 0.00 0.0 M 20.2 M 0317170850 Ac BKN 20+ mi 42 46% RH WNW 2+W 25 Kts Tmxmn 51 36ºF Ac SCT all day RAPID MELT AND sublimation Depth 20.2 (12-26) inches 90% cover
3/18/2017 7:00 AM 0.00 0.0 M 17.6 M 0318170700 Cs BKN 20+mi 34 60% RH Calm + W 16 Kts Tmxmn 54 30ºF Ac Cs SCT v BKN RAPID MELTING AND SUBLIMATION Depth 17.6 (11-23) inches 85% Cover Forest 100%
3/19/2017 8:30 AM 0.00 0.0 M 15.4 M 0319170830 Cu Cs SCT 20+mi 44 40% WSW 5+21 Kts Tmxmn 58 31ºF Cs SCT all DAY RAPID MELT AND SUBLIMATION Depth 15.4 (6-21) 83% cover
3/20/2017 8:30 AM 0.00 0.0 M 13.6 M 0320170830 Ac SCT 20+ mi 47 34% RH Calm + W 21 Kts Tmxmn 54 36 Cs SCT v BKN all day RAPID MELTING , RUNOFF AND SUBLIMATION DEPTH 13.6 (5-18) INCHES 80% COVER
3/21/2017 8:55 AM 0.00 0.0 M 11.2 M 0321170855 Cu Ac SCT 20+mi 45 45% RH S 1+W 15 Kts Tmxmn 52 37 Cs SCT v BKN all day RAPID MELTING SUBLIMATION Depth 11.2 (0-16) inches 80% cover
3/22/2017 7:00 AM 0.00 0.0 M 10.2 M 0322170700 Cs BKN 20+mi 40 43% RH Calm + S 18 Kts Tmxmn 58 30 Ac SCT all Day RAPID MELTING, SUBLIMATION Depth 10.2 (0-16) inches 75% cover S facing slopes melting out forest still 100%
3/23/2017 8:00 AM 0.00 0.0 M 8.8 M O323170800 Cu SCT 20+ mi 37 54% E 2 + W 23 Kts Tmxmn 53 36ºF Ac Sc BKN v OVC all day RAPID MELT, RUNOFF, SUBLIMATION, Water still flowing at 0800 Depth 8.8(0-15) 4 of 5 snow poles in snow 70% cover
3/24/2017 8:50 AM 0.17 1.4 M 10.4 M 0324170850 Ns X S— F 2mi 28 78% RH NE 4+ 24 Kts Tmxmn 50 27 SBGN 2130 S- S Max 2140-2210 Cs OVC 1000-1400 VIRGA 1400-1800 New 1.4 SWE 0.17 Depth 10.4 (3-16) inches Snow Boards: 1.2-1.6; 1.2-1.5; 1.1-1.6
3/25/2017 7:00 AM T T M 9.0 M 0325170700Cs BKN 20+m 24 74% RH Calm + N/e 19 Kts Tmxmn 41 24ºF Sc Ac BKN v OVC all day new snow melted, runoff resumed SW—- AM Depth 9 (0-15) RAPID MELT , RUNOFF 65% SNOW COVER S facing slope 50% Forest 95%
3/26/2017 7:00 AM 0.07 1.4 M 8.8 M 0326170700 Ns SW— 4 mi 29 89% RH Calm + N 12 Kts Tmxmn 54 23 ºF Cs SCT v BKN all day Ac Ns moved in 1500 SBGN 1930 SW- - S- 2100-2330 New 1.4 SWE 0.07 Depth 8.8 (2-14) inches Runoff all night
3/27/2017 8:00 AM T T M 7.4 M 0326170800 Ac SCT 20+MI 30 60% CALM + E 11Kts Tmxmn 42 29ºF Sc BKN v OVC SW- - all day Melting Runoff Depth 7.4 (0-12) 60% cover Forest 90% cover S facing 30 % cover
3/28/2017 8:50 AM 0.18 2.8 M 10.0 M 0328170850 Ns SW- 4 mi 33 86% Calm SW+13 Kts Tmxmn 45 26ºF Ac SCT AM Ac Cs BKN OVC to Ns SW- SBGN 2100 New 2.8 SWE 0.18 Depth 10.0 (3-14) inches Snowboards: 2.3-3.0; 2.4-2.8; 2.5-2.8 Large dendritic aggregates 5-15 mm clusters Runoff Continues
3/29/2017 7:00 AM 0.56 4.8 M 13.0 M 0329170700 Ns OVC SCT SW- 4 mi 26 86% RH Calm + S 7 Kts Tmxmn 38 26ºF Ns OVC All day SCT BKN SW SBGN 1345 max S+ 1530-1830 New 4.8 SWE 0.56 Depth 13.0 (6-18) inches Snow Boards : 4.5-5; 4.3-4.9; 4.0-4.8 large dendritic aggregates 5-15 mm rimed crystals
3/30/2017 8:00 AM T T M 8.2 M 0329170800 Sc BKN Ac BKN 20+mi 30 71% RH Calm + N 15 Kts Tmxmn 43 24ºF Sc SCT SW— AM Fc SCT PM T New Depth 8.2 (0-13) inches RAPID MELT, RUNOFF, 60% COVER
3/31/2017 7:00 AM 0.01 0.1 M 7.6 M 0331170700 As Cs BKN 20+mi 31 76% RH Calm + W 12Kts Tmxmn 50 24ºF Sc BKN v OVC all day SW- 2110-2200 T 0.1 New SWE 0.01 Depth 7.6 (0-12) Melt runoff 55% Cover 85% Forest
4/1/2017 8:30 AM 0.06 0.5 M 7.8 M 0401170830 Sc OVC SCT SW- 10 mi 28 74% RH SE 3+15 Kts Tmxmn 39 28 Ns OVC SCT SW- v SW — all day SP, Dent Aggr, slush, R- - mix New 0.5 SWE 0.06 Depth 7.8 (0-12) 55% cover snowboards 0.3-0.6; 0.5-0.4; 0.3-0.5 inches
4/2/2017 8:30 AM 0.02 0.3 M 7.6 M 0402170830 Sc OVC SCT SW- 12 mi 31 78% RH Calm + SE 12 Kts Tmxmn 45 23ºF Sc BKN v OVC all day SCT SW- -; SW- SP-1630-1750 New 0.3 SWE 0.02 Depth 7.6 (0-12) inches 60% cover, Forest 95% 1-3 ft deep
4/3/2017 7:00 AM 0.22 3.1 M 10.2 M 0403170700 Sc SCT v BKN 20 mi 18 82% NW 2+W 15 Kts Tmxmn 45 19ºF Sc BKN AM Ns 1700 SW- - SBGN 2130 max 2210-0030 New 3.1 SWE 0.22 Depth 10.2 (4-14) Snow boards 2.9-3.5; 2.8-3.2; 2.8-3.3 large dendritic aggregates 5-15 mm VSBY 0.1 to 0.3 2200-2300
4/4/2017 8:55 AM 0.45 4.8 M 12.8 M 0404170855 Ns S- 0.7 mi 23 85% RH N 3+ W 14 Kts Tmxmn 38 16ºF Sc SCT v BKN AM Ns SW PM SBGN 2100 Smax 0200-0500 New 4.8 SWE 0.46 Depth 12.8 (8-16) inches Snowboards 4.8-5.3 fine crystals 1-3 mm
4/6/2017 8:00 AM 0.00 0.0 M 10.0 M 0406170800 Cs BKN 20+ mi 33 65% RH Calm + NW 18 Kts Tmxmn 36 11ºF Sc AcL SCT v BKN to BKN v OVC all day Depth 10.0 (3-14) inches 90% cover
4/7/2017 8:50 AM 0.00 0.0 M 6.0 M 0407170850 Cu SCT Cs BKN 20+mi 40 38% RH W 3+20 Kts Tmxmn 52 24ºF Cs BKN all day Rapid Melting and runoff Depth 6 (0-10) Drifts 12-24 inches 60% cover
4/8/2017 7:00 AM 0.00 0.0 M 5.4 M 0408170700 Cu Ac SCT 20+ mi 43 38% RH W 4+24 Kts Tmxmn 55 31 ºF Cu Cs SCT v BKN all day Rapid Melt and runoff Depth 5.4 (0-10) 55% Cover
4/9/2017 8:00 AM 0.09 0.5 M 5.2 M 0409170800 Ns S X .2 mi 25 78% RH WNW 6+21 Kts Tmxmn 50 25 ºF Cu cu+ AM RW- - SCT 1100-1300 SBGN 2330 SW- v S + BS+ New 0.5 SWE 0.09 Depth 5.2 (3-8) inches 0.4-0.7;0.3-0.6; 0.2-0.6 inches Drifting; Snow boards Dendritic Aggregates Dendrites 2-9 mm
4/10/2017 8:00 AM 0.02 0.2 M 3.8 M 0410170800 Cs SCT 20+mi 21 68% RH N 1 + NW 23 Kts Tmxmn 32 7ºF Ns SW- v SW BS all day New 0.2 SWE 0.02 Depth 3.8 (.2-8) inches
4/11/2017 6:30 AM 0.00 0.0 M 3.0 M 0411170630 Cs SCT 20+mi 25 41% Calm + W 18 Kts Tmxmn 43 23 ºF Cs SCT v BKN CLR Depth 3.0 0-6 inches Drifts 2 ft 55% Cover Forest 95% Cover
4/12/2017 7:00 AM 0.00 0.0 M 2.0 M 0412170700 Ac SCT Cs SCT 20+ mi 37 38% RH NW 2 + SW 14 Kts Tmxmn 50 21 ºF Cs SCT AM As OVC PM Rapid Melt and runoff Snow poles: 0, 0, 6, 0, 0 inches 50% cover Forest 85% cover Snow patches 6-12 inch, drifts higher at 9600 ft msl
4/13/2017 8:00 AM 0.00 0.0 M 1.0 M 0413170800 CLR 20+MI 46 47% RH Calm + W 17 Kts Tmxmn 59 32ºF Cs SCT CLR Few Cu all day Rapid Melt and Runoff Drifts 1-2 feet 50% cover 1 of 5 snow poles has snow 2-10 inches around pole
4/14/2017 6:30 AM 0.00 0.0 M 2.0 M 0414170630 Cs BKN 20+ mi 42 58% RH W 4+SW 26 Kts Tmxmn 62 35ºF Cs Cu SCT v BKN As OVC Cs OVC RAPID MELT AND RUNOFF 45% COVER Drifts 1-2 ft Forest 80% cover
4/15/2017 8:00 AM 0.00 0.0 M 0.0 M 0415170800 Cs thin BKN 20+mi 35 50% RH Calm + WSW 26 Kts Tmxmn 58 38ºF Cs Thin BKN all day Rapid Runoff and Melt + Sublimation loss Depth 0 all 5 snow poles Drifts 1-2 ft shrinking fast 40% cover
6/30/2017 7:00 AM 0.00 0.0 M 0.0 M 0630170700 Cu SCT 20+mi 43 70% RH Calm + W 1+21kts taxman 69 43 Cu SCT all day FEW SCT VIRGA showers
7/1/2017 7:00 AM 0.00 0.0 M 0.0 M 0701170700 CLR FEW Cu All day 20+mi 41ºF 35% RH NW 1 + 21 Kts Tmxmn 73 40 FROST on roof tops Afternoon RH 15-20% very dry
7/2/2017 7:00 AM 0.00 0.0 M 0.0 M 0702170700 Ac Cs SCT 20+mi 50 28% RH SE 2+W 24 Kts Tmxmn 73 40 Very DRY
7/3/2017 7:00 AM 0.00 0.0 M 0.0 M 0703170700 Ac Cs SCT 20 mi H 47 61% S 2+13 its Tmxmn 75 46ºF CLR am Sc Cu Cu+ BKN OVC PM SCT RW to south
7/4/2017 7:00 AM 0.03 0.0 0.00 M M 0703170700 CLR 20+MI H 47 64% CALM + 18 kts Tmxmn 72 40ºF QPE 0.03 Cs Ac SCT AM Cu Cu+ RW- PM RW- 1820-1915
7/5/2017 7:00 AM 0.00 0.0 M 0.0 M 0705170700 -X K 8 MI 50 52% CALM + N 11KTS TMXMN 78 46 CLR AM FEW CU SMOKE in waves from West and N
7/6/2017 7:00 AM 0.00 0.0 M 0.0 M 0706170800 -X K vis 8mi K+ PEAK 2 Fire 6mi S T 65 36%RH Calm + E 13 Kts Tmxmn 84 46 VERY DRY Fire started 1100 below Peak 2 Slurry bombers CLR Cu Cu+ SCT
7/7/2017 7:00 AM T 0.0 0.00 M M 0707170700 CLR 15 MI KH 51 61% RH CALM + N 13 KTS TMXMN 81 48ºF CLR CS CU SCT Peak 2 fire 7% contained SCT RW- - - T
7/8/2017 7:00 AM 0.03 0.0 M 0.0 M 0708170700 Ac Sc SCT 15 K H 49 70% Calm + SE 13 Kts Tmxmn 77 48ºF Cu Cu+ SCT Cb TRW- RW 1400-1415 QPE 0.03 inches
7/9/2017 7:00 AM T M M M M 0709170700 CLR 20+ mi 50 67% RH Calm + W 12kt Tmxmn 75 45ºF Cu Cu+ SCT small RW- T
7/10/2017 7:00 AM 0.00 0.0 M M M 0710170700 Ac SCT 15 KH 53 58% RH Calm + NE 17 kt Tmxmn 83 43 Cu SCT v BKN RW NNE
7/11/2017 6:30 AM 0.38 0.0 M 0.0 M 0711170630 As BKN Cs BKN 20+mi 45 92% RH Calm + E 13 kt Tmxmn 81 43ºF CLR Cu Cu+ Cb SCT TRW RBGN 1600-1740 1900-2330 QPE 0.38 Max 1605-1625
7/12/2017 7:00 AM 0.44 0.0 M 0.0 M 0712170700 Ns RW- 5 mi 50 93% Calm + SE 15kt Tmxmn 73 45ºF Monsoon Rains RBGN 1830-2300 0630- max 1915-2010 QPE 0.44 inches
7/13/2017 7:00 AM 0.68 0.0 M 0.0 M 0713170700 Ns R- Sc OVC Cu+ Cb R 1430-2130 max 1750-1850 QPE 0.68 T 44 RH 89% Calm N 6kt Tmxmn 63 49ºF Ns dark all day RW R oct v BKN all day
7/14/2017 7:00 AM T 0.0 M 0.0 M 0714170700 Ac SCT 20+mi 44 87% RH Calm + SE 12 kt Tmxmn 72 44ºF Cu Cu+ SCT v BKN SCT VIRGA RW- - - T
7/15/2017 7:00 AM 0.01 0.0 M 0.0 M 0715170700 Ac BKN 20+ mi 45 84% RH Calm + SE 11 kt Tmxmn 71 45ºF Cu SCT v BKN AM Cu+ Bin v OVC PM SCT RW- - QPE 0.01 INCHES
7/17/2017 7:00 AM 0.00 0.0 M M M 0717170700 Ac SCT 50 75% RH Calm + W 17 kt Tmxmn Cu Cu+ SCT v BKN Cb S-E DRY soils
7/18/2017 8:00 AM 0.00 0.0 M M M 0718170800 Ac SCT v BKN 20 mi 60 56% RH NE 1+ S 15 kt Tmxmn 74 44ºF Cu SCT v BKN Very DRY
7/19/2017 7:00 AM 0.00 0.0 M M M 0719170700 Ac Cs SCT 20 mi 50 77% Calm + E 13 kt Tmxmn 78 48ºF Cu SCT v BKN All day
7/20/2017 7:00 AM 0.14 0.0 M 0.0 M 0720170700 CLR 20+ MI 51 82% RH CALM + W 11 KT TMXMN 81 50ºF Cu Cu+ SCT Cb TRW- RW TRW- 1410-1630 max 1445-1500 QPE 0.14 inches
7/21/2017 7:00 AM 0.00 0.0 M M M 0721170700 Ac SCT 20+mi 49 85% RH Calm + W 13kt 78 47ºF Cu SCT v BKN Cu+ BKN PM DRY
7/22/2017 7:00 AM 0.11 0.0 M 0.0 M 0722170700 St BKN Ac OVC 4 F 50 91% RH Calm + SW 18 kt Tmxmn 75 48ºF TRW- 1515-1630 waves QPE 0.11 Max1600-1615 1920-1930
7/23/2017 8:50 AM 0.00 0.0 M M M 0723170850 Cu SCT 20+mi 60 53% RH Calm + SE 14 KT TMXMN 74 48 CU CU+ SCT V BKN
7/24/2017 7:00 AM 0.00 0.0 M 0.0 M 0724170700 Ac BKN 20 mi 49 70% RH Calm + SE 14 kt Tmxmn 77 45ºF Cu SCT v BKN all day SCT RW- VIRGA
7/25/2017 7:00 AM T M M M M 0725170700 Ns As OVC RW- - 55 75% Calm + SE+18 kt Tmxmn 79 48 Cu Cu+ SCT v BKN all day T new RW- - 0600-0700
7/26/2017 7:00 AM 0.06 0.0 M 0.0 M 0726170700 Sc OVC 20+mi 52 91% RH Calm + W 14 kt Tmxmn 73 52ºF Ns RW— AM Sc BKN Cu Cu+ Ns R+ to South at Breck 1800-2200; SU6 RW 2010-2045 QPE 0.06 in
7/27/2017 7:00 AM 0.00 0.0 M M M 0727170700 CLR FEW Fcu 20+mi 50 89% NW 1+E 10 KT Tmxmn 73 50ºF St Sc OVC v BKN SCT TRW to SE
7/28/2017 7:00 AM T 0.0 M 0.0 M 0728170700 CLR 20+mi 51 75% RH Calm + N 12 kt Tmxmn 77 49 ºF Cu Cu+ SCT v BKN RW- - big drops 1600-1610 T
7/29/2017 7:00 AM 0.15 0.0 M 0.0 M 0729170700 Ns R- - F 50 90% RH Calm + E 12 kt Tmxmn 75 48ºF CLR Cu Cu+ SCT to OVC RW- - 1400-1610 R 0300-0700 max 0510-0540 QPE 0.15 inches
7/30/2017 8:00 AM 0.13 0.0 M 0.0 M 0730170800 As Cs SCT v BKN 20 mi 54 83% RH Calm + SE 4 kt Tmxmn 63 50ºF Ns R- v RW- 0700-1100 RW-1930-2100 Sc As BKN v OVC PM QPE 0.13
7/31/2017 7:00 AM 0.00 0.0 M 0.0 M 0731170700 CLR 20+mi 45 86% RH Calm + W 12 kt Tmxmn 75 45ºF Ac Cs SCT AM Cu Cu+ PM Cb on Front range
8/1/2017 8:00 AM 0.02 0.0 M 0.0 M 0800170830 CLR -X 8 KH 56 55% RH Calm + E 10 kt Tmxmn 75 4ºF CLR Cu Cu+ RW- - 1810-1815 QPE 0.02
8/2/2017 7:00 AM 0.14 0.0 M 0.0 M 0802170700 Ac SCT 20 mi 43 75% RH CALM + SE 10 KT Tmxmn 74 42ºF CLR Cu cu+ Cb SCT TRW 1505-1530 QPE 0.14 in
8/3/2017 8:00 AM 0.03 0.0 M 0.0 M 0803170800 Ac SCT V BKN KH 10 mi 54b76% RH Calm + W 24 kt Tmxmn 72 43ºF Cu Cu+ Cb TRW- - 1200-1210 1600-1610 QPE 0.03 inches
8/4/2017 7:00 AM 0.02 0.0 M 0.0 M 0804170700 Cs KH-X 10 mi 48 71% RH NE 2+W 18 kt Tmxmn 69 47ºF KH all day Cu Cu+ RW- - - 1410-1415 MDT QPE 0.02 inches
8/5/2017 7:00 AM 0.00 0.0 M M M 0805170700 Cs BKN 10 mi KH-X 47 78% RH NE 1+W 22kt Tmxmn 71 46ºF Cu KH windy all day
8/6/2017 7:00 AM 0.07 0.0 M 0.0 M 0806170700 Ac SCT CLR 20 mi 42 81% RH Calm + 15 kt Tmxmn 73 42ºF frost on roofs Cu Cu+ Cb TRW— 1630-1715 1840-1585 QPE 0.07 inches
8/7/2017 7:00 AM 0.01 0.0 M 0.0 M 0807170700 Ac BKN 10 mi 46 73% RH N 1+ W 13 kt Tmxmn 73 43ºF SCT Cu Cu+ RW—- 1500-1505QPE 0.01 INCHES
8/8/2017 8:50 AM 0.20 0.0 M 0.0 M 0808170850 St F Cu SCT 20+mi 53 81% RH NW 1+ W 11 kt Tmxmn 66 44ºF Ac OVC Sc Cu+ Ns RW- R- 1730-2300 QPE 0.20 max 2100-2120
8/9/2017 7:00 AM 0.24 0.0 M 0.0 M 0809170700 Fs Sc SCT 20+ mi 43 91% RH Calm + W 13 kt Tmxmn 64 41ºF Cu Cu+ TRW- RW- 1800-2030 max 1805-1830 QPE 0.24 INCHES
8/10/2017 7:00 AM 0.18 0.0 M 0.0 M 0810170700 Ns R- RW END Sc BKN 20 mi 45 91% Calm + NW 18 kt Tmxmn 67 41ºF Ac Sc SCT TRW- PM RBGN 0210 3 showers End 0700 QPE 0.17 inches
8/11/2017 7:00 AM 0.00 0.0 M M M 0811170700 Fc 20+mi 45 80% RH Calm + W 20 kt Tmxmn 69 43ºF Cu Cu+ SCT Cb NW to NE HAIL on Ute Pass and in Williams Fork Valley
8/13/2017 7:00 AM 0.07 0.0 M 0.0 M 0813170730 AcL Ac BKN 20+mi 45 75% W 1+13 kt Tmxmn 71 42ºF Ac Ns RW— SCT As OVC all day SCT RW- QPE 0.07 QPE 0.07 inches RW 1340-1450
8/14/2017 8:50 AM 0.01 0.0 M 0.0 M 0814170850 Ac BKN 20 mi 51 62% SE 1+W 12 kt Tmxmn 71 44 ºF AcL BKN AM Cu Cu+ SCT RW- - PM QPE 0.01 inches
8/15/2017 6:00 AM 0.18 0.0 M 0.0 M 0815170600 As SCT 20+mi 41 87% SW 1+W 19 kt Tmxmn 69 41ºF Ac BKN Cu Cu+ SCT v BKN Ns/Cb TRW- SCT RBGN 1230, 1630 1855-1930 max QPE 0.18
8/16/2017 7:00 AM 0.03 0.0 M 0.0 M 0816170700 St As BKN 20 mi 43 90% Calm + @ 20 kt Tmxmn 67 40ºF Ac Cu Cu+ SCT RW- - AM RW- QPE 0.03 inches RW-- 1650-1700; RW- 0300-0330
8/17/2017 8:10 AM 0.00 0.0 M M M 0817170810 Ac SCT 20 mi KH 50 60% Calm + W 10 kt Tmxmn 65 41 Ac Cs BKN v SCT
8/18/2017 7:00 AM T M M M M 0818170700 CLR 20+ MI 42 76% CALM + W 16 KT Tmxmn 67 41ºF Cu Cu+ SCT SCT VIRGA RW- - - all day
8/19/2017 7:00 AM 0.00 0.0 M M M 0819170700 Ac SCT 20 mi 48 51% Calm+ WSW 16 kt Tmxmn 74 41 Cu SCT v BKN all day
8/20/2017 7:00 AM 0.00 0.0 M M M 0820170700 Cs BKN 15 mi KH 44 63% RH Calm + W 19 kt Tmxmn 74 44º F Cu SCT all day WINDY Very DRY
8/21/2017 7:00 AM 0.00 0.0 M M M 0821170700 Cs Ac SCT 20 mi 44 73% RH Calm + E 14 kt Tmxmn 74 44ºF Cu Cu+ BKN v OVC VIRGA
8/22/2017 8:00 AM 0.00 0.0 M M M 0822170700 Cs BKN 5 mi KH 43 76% RH Calm +E 13 kt Tmxmn 76 44ºF Ac Cs Cu Cu+ PM ECLIPSE 90% dT -6ºF at min light over 90 min period nice Thermograph trace
8/23/2017 7:00 AM 0.00 0.0 M M M 0823170700 As OVC 20 mi 47 72% RH Calm + SW 13 kt Tmxmn 74 42ºF Ac Sc SCT v BKN CLR
8/24/2017 7:00 AM 0.04 0.0 M 0.0 M 0824170700 As Cs BKN 20+mi 42 87% RH Calm + W 13 kt Tmxmn 73 42ºF As OVC Am Sc cu cu+ Cb PM TRW- QPE 0.04 INCHES RW- 1200-1300 BRECK TRW 1530-1630
8/25/2017 7:00 AM 0.22 0.0 M 0.0 M 0825170700 CLR 20+MI 39 92% RH CALM + N 12 kt Tmxmn 67 39 FROST ON ALL ROOFS RW- 1210-1220 R TRW- 1640-1730 MAX 1710-1730 QPE 0.22 INCHES TRW- RW BOULDER CREEK
8/26/2017 7:00 AM 0.00 0.0 M M M 0826170700 CLR 15 MI KH 40 60% CALM Tmxmn 73 38ºF DRY
8/27/2017 8:00 AM 0.00 0.0 M M M 0827170800 CLR 15 Mi KH 46 71% Calm Tmxmn 75 44ºF Cu
8/28/2017 7:00 AM 0.00 0.0 M 0.0 M 0828170700 CLR KH 15 mi 45 78% Calm + W 10 kt Tmxmn 78 45ºF CLR Cu SCT PM
8/29/2017 6:45 AM 0.00 0.0 M M M 0829170645 Ac BKN 15 KN 42 69% RH Calm + W 10 kt Tmxmn 78 42º F Cu SCT all day
8/30/2017 7:00 AM 0.00 0.0 M M M 0830170700 Ac SCT 10 mi KH 44 65% Calm + NE 15 kt Tmxmn 80 41ºF Cu SCT all day
8/31/2017 7:00 AM T 0.0 M 0.0 M 0831170700 Ac SCT 15 mi KH 41 81% Calm + SE 21 kt Tmxmn 74 41 ºF Cu SCT v Cu+ VIRGA SCT RW- - T RW- - 1910-1925
9/1/2017 7:00 AM 0.22 0.0 M 0.0 M 0901170700 Fs Sc Ac BKN 15 H F 44 97% Calm + NW 14 Tmxmn 73 41ºF Ac SCT cu Cu+ Cb TRW- 1910-2015 Max 1930-1945 QPE 0.22 inches
9/2/2017 8:00 AM 0.00 0.0 M M M 0902170800 CLR -X KH 44 75% CALM + N 14 KT TMXMN 72 41 Fs Sc Cu+ AM Cu SCT PM rapid drying 30% RH
9/3/2017 8:00 AM 0.00 0.0 M 0.0 M 0903170800 CLR -X KH 8 MI 49 61% RH CALM + S 9 KT TMXMN 77 39ºF Cu SCT AM Cu+ SCT Cb PM DRY
9/4/2017 7:30 AM 0.00 0.0 M 0.0 M 0904170730 Ac BKN KH 15 mi 52 43% RH Calm + E 10 kt Tmxmn 80 45ºF CLR -X KH few Cu SCT Very DRY
9/5/2017 7:00 AM 0.00 0.0 M M M 0905170700 X KH 2 mi 45 75% RH Calm + N 13 kt Tmxmn 80 45ºF Ac BKN X KH
9/6/2017 7:00 AM 0.00 0.0 M M M 0906170730 X K 2 mi 44 63% RH Calm + N 13 kt Tmxmn 73 41ºF VERY DRY SKY X ALL DAY HEAVY SMOKE LAYERS 0700-1000
9/7/2017 7:00 AM 0.00 0.0 M M M 0907170700 -X K Ac Acc 8 mi 47 52% Calm + NE 12 kt Tmxmn 74 51ºF X K+ all day 2-3 mi VSBY
9/8/2017 7:00 AM T M M M M 0908170700 -X k Ac Cs 8 mi 44 70% RH Calm + W 15 kt Tmxmn 75 42 ºF -X X K TRW- 1610-1620 -SCT QPE T
9/9/2017 7:00 AM 0.02 M M M M 0909170700 Ac SCT 10 mi KH 44 72% RH Calm + W 25 kt Tmxmn 70 43ºF Ac Cu -X KH all day 1610, 1800 RW- - QPE 0.02 inches
9/10/2017 7:00 AM 0.01 M M M M 0910170700 Ac cs SCT 42 81% Calm + SE 13 KT TMXMN 72 42ºF Cu Cu+ RW TRW SCT RW- - QPE 0.01 inches 1600-1615
9/11/2017 7:00 AM 0.16 M M M M 0911170700 Ac bon 20 mi 44 87% RH Calm + W 15 kt Tmxmn 71 42 QPE 0.16 inches



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



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