Station Overview Station Location
Station Number CO-JF-267 Latitude 39.77385
Station Name Golden 9.4 WNW Longitude -105.38644
County Jefferson Elevation (ft) 8730



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 10 1.43 0.63 23 0.63 23 0.00 0 0 7 3 0.3 1 0
Nov 10 1.05 0.58 28 0.58 28 0.00 0 0 3 7 6.0 3 3
Dec 10 0.82 0.19 26 0.19 20 0.00 6 1 3 2 6.2 3 3
Jan 11 0.60 0.45 31 0.45 31 0.00 0 0 5 2 9.2 5 12
Feb 11 0.70 1.12 28 1.12 28 0.00 0 0 8 5 17.7 10 20
March 11 1.99 0.80 31 0.80 31 0.00 0 0 9 4 9.6 9 8
April 11 2.61 2.98 29 2.87 24 0.11 5 1 10 2 18.6 9 9
May 11 2.39 2.25 30 2.25 30 0.00 0 0 10 5 16.1 5 6
June 11 2.23 2.50 30 2.50 30 0.00 0 0 5 2 0.0 0 0
July 11 2.38 5.78 29 5.78 29 0.00 0 0 18 4 0.0 0 0
Aug 11 2.71 1.23 31 1.23 31 0.00 0 0 12 4 0.0 0 0
Sept 11 1.64 0.00 30 0.00 0 0.00 30 0 0 0 0.0 0 0
Water Year Totals: 20.55" 18.51" 346 days 18.40" 305 0.11" 41 days 2 90 days 40 days 83.7" 45 days 61 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
10/1/2010 0.00
10/2/2010 0.00
10/3/2010 0.00
10/4/2010 0.00
10/5/2010 T
10/6/2010 0.00
10/7/2010 0.10
10/8/2010 0.00
10/9/2010 T
10/10/2010
10/11/2010 0.07
10/12/2010 0.15
10/13/2010 0.22
10/14/2010
10/15/2010 0.00
10/16/2010 0.00
10/17/2010 0.00
10/18/2010 0.00
10/19/2010
10/20/2010
10/21/2010
10/22/2010
10/23/2010 0.04
10/24/2010 0.00
10/25/2010 0.04
10/26/2010 0.01
10/27/2010 T
10/28/2010 0.00
10/29/2010
10/30/2010
10/31/2010 0.00
11/1/2010 T
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.00
11/5/2010 0.00
11/6/2010 0.00
11/7/2010 0.00
11/8/2010 T
11/9/2010 0.00
11/10/2010 0.38
11/11/2010 0.00
11/12/2010 T
11/13/2010 0.00
11/14/2010 0.00
11/15/2010 T
11/16/2010 T
11/17/2010 0.12
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 0.00
11/22/2010 0.08
11/23/2010 0.00
11/24/2010 T
11/25/2010 T
11/26/2010 0.00
11/27/2010 0.00
11/28/2010
11/29/2010 0.00
11/30/2010
12/1/2010 0.00
12/2/2010 0.00
12/3/2010 0.00
12/4/2010 0.00
12/5/2010 0.00
12/6/2010
12/7/2010 T
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.00
12/11/2010 0.01
12/12/2010 0.00
12/13/2010 0.00
12/14/2010
12/15/2010
12/16/2010
12/17/2010 0.02
12/18/2010
12/19/2010 T
12/20/2010 0.00
12/21/2010 0.00
12/22/2010 0.00
12/23/2010 0.00
12/24/2010 0.00
12/25/2010 **
12/26/2010 **
12/27/2010 **
12/28/2010 **
12/29/2010 **
12/30/2010 0.00
12/31/2010 0.16
Day of YearDaily PrcpMultiday Prcp
1/1/2011 T
1/2/2011 0.00
1/3/2011 0.00
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 0.00
1/7/2011 0.00
1/8/2011 0.00
1/9/2011 0.00
1/10/2011 0.24
1/11/2011 0.00
1/12/2011 0.00
1/13/2011 0.00
1/14/2011 0.00
1/15/2011 0.00
1/16/2011 0.00
1/17/2011 0.01
1/18/2011 0.00
1/19/2011 0.00
1/20/2011 0.13
1/21/2011 0.00
1/22/2011 T
1/23/2011 0.03
1/24/2011 0.00
1/25/2011 0.04
1/26/2011 0.00
1/27/2011 0.00
1/28/2011 0.00
1/29/2011 0.00
1/30/2011 0.00
1/31/2011 0.00
2/1/2011 0.05
2/2/2011 0.01
2/3/2011 0.00
2/4/2011 0.04
2/5/2011 T
2/6/2011 0.33
2/7/2011 0.27
2/8/2011 0.22
2/9/2011 0.07
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 0.00
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 T
2/18/2011 T
2/19/2011 0.00
2/20/2011 0.13
2/21/2011 0.00
2/22/2011 0.00
2/23/2011 0.00
2/24/2011 T
2/25/2011 T
2/26/2011 0.00
2/27/2011 0.00
2/28/2011 0.00
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.20
3/5/2011 0.00
3/6/2011 0.00
3/7/2011 0.04
3/8/2011 0.01
3/9/2011 T
3/10/2011 0.00
3/11/2011 0.00
3/12/2011 0.00
3/13/2011 0.05
3/14/2011 0.00
3/15/2011 0.00
3/16/2011 0.00
3/17/2011 0.00
3/18/2011 0.28
3/19/2011 0.00
3/20/2011 0.00
3/21/2011 0.00
3/22/2011 0.08
3/23/2011 T
3/24/2011 0.00
3/25/2011 T
3/26/2011 0.00
3/27/2011 0.01
3/28/2011 0.12
3/29/2011 0.01
3/30/2011 0.00
3/31/2011 T
Day of YearDaily PrcpMultiday Prcp
4/1/2011 0.00
4/2/2011 0.00
4/3/2011 0.00
4/4/2011 0.38
4/5/2011
4/6/2011 0.00
4/7/2011 0.01
4/8/2011 0.00
4/9/2011 0.00
4/10/2011 0.03
4/11/2011 0.00
4/12/2011 0.00
4/13/2011 0.00
4/14/2011 1.09
4/15/2011 0.70
4/16/2011 **
4/17/2011 **
4/18/2011 **
4/19/2011 **
4/20/2011 0.11
4/21/2011 0.15
4/22/2011 T
4/23/2011 0.03
4/24/2011 0.08
4/25/2011 0.34
4/26/2011 0.06
4/27/2011 0.00
4/28/2011 0.00
4/29/2011 0.00
4/30/2011 T
5/1/2011 T
5/2/2011 0.01
5/3/2011 T
5/4/2011 0.00
5/5/2011 T
5/6/2011 0.00
5/7/2011 0.00
5/8/2011 0.00
5/9/2011 0.00
5/10/2011 0.00
5/11/2011 0.43
5/12/2011 0.81
5/13/2011 0.00
5/14/2011 0.00
5/15/2011 0.39
5/16/2011 0.02
5/17/2011 0.00
5/18/2011 0.02
5/19/2011
5/20/2011 0.38
5/21/2011 0.06
5/22/2011 T
5/23/2011 0.00
5/24/2011 0.07
5/25/2011 0.06
5/26/2011 0.00
5/27/2011 0.00
5/28/2011 0.00
5/29/2011 0.00
5/30/2011 0.00
5/31/2011 T
6/1/2011 0.00
6/2/2011 0.00
6/3/2011 0.00
6/4/2011 0.00
6/5/2011 0.00
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 T
6/10/2011 0.00
6/11/2011 0.01
6/12/2011 0.00
6/13/2011 0.00
6/14/2011 0.00
6/15/2011 0.00
6/16/2011 0.00
6/17/2011 0.00
6/18/2011 0.16
6/19/2011 0.00
6/20/2011 2.20
6/21/2011 0.12
6/22/2011 T
6/23/2011 0.00
6/24/2011 0.00
6/25/2011 0.00
6/26/2011 0.00
6/27/2011 0.00
6/28/2011 0.00
6/29/2011 0.00
6/30/2011 0.01
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.09
7/2/2011 0.02
7/3/2011 0.00
7/4/2011 0.00
7/5/2011 0.00
7/6/2011 0.06
7/7/2011 T
7/8/2011 1.14
7/9/2011 T
7/10/2011 0.40
7/11/2011 0.45
7/12/2011 0.39
7/13/2011 0.18
7/14/2011 0.70
7/15/2011 0.56
7/16/2011 0.01
7/17/2011 0.01
7/18/2011 0.00
7/19/2011 0.02
7/20/2011 0.70
7/21/2011 T
7/22/2011 0.00
7/23/2011 0.00
7/24/2011 0.00
7/25/2011 0.06
7/26/2011
7/27/2011 0.84
7/28/2011 0.14
7/29/2011 0.01
7/30/2011 T
7/31/2011
8/1/2011 0.00
8/2/2011 0.02
8/3/2011 0.12
8/4/2011 0.29
8/5/2011 T
8/6/2011 0.00
8/7/2011 T
8/8/2011 0.00
8/9/2011 0.00
8/10/2011 0.00
8/11/2011 0.00
8/12/2011 T
8/13/2011 0.00
8/14/2011 0.00
8/15/2011 0.10
8/16/2011 0.00
8/17/2011 0.06
8/18/2011 0.00
8/19/2011 0.00
8/20/2011 0.21
8/21/2011 0.00
8/22/2011 0.02
8/23/2011 0.05
8/24/2011 0.00
8/25/2011 0.00
8/26/2011 0.13
8/27/2011 0.01
8/28/2011 0.10
8/29/2011 T
8/30/2011 0.00
8/31/2011 0.12
9/1/2011 **
9/2/2011 **
9/3/2011 **
9/4/2011 **
9/5/2011 **
9/6/2011 **
9/7/2011 **
9/8/2011 **
9/9/2011 **
9/10/2011 **
9/11/2011 **
9/12/2011 **
9/13/2011 **
9/14/2011 **
9/15/2011 **
9/16/2011 **
9/17/2011 **
9/18/2011 **
9/19/2011 **
9/20/2011 **
9/21/2011 **
9/22/2011 **
9/23/2011 **
9/24/2011 **
9/25/2011 **
9/26/2011 **
9/27/2011 **
9/28/2011 **
9/29/2011 **
9/30/2011 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 7:00 AM 0.00 0.0 M M M
10/2/2010 7:00 AM 0.00 0.0 M 0.0 M
10/3/2010 7:00 AM 0.00 0.0 M M M
10/4/2010 7:00 AM 0.00 0.0 M M M
10/5/2010 7:00 AM T 0.0 M 0.0 M Trace of rain Monday afternoon.
10/6/2010 7:00 AM 0.00 0.0 M 0.0 M
10/7/2010 7:02 AM 0.10 0.0 M 0.0 M
10/8/2010 7:00 AM 0.00 0.0 M 0.0 M
10/9/2010 7:00 AM T T M T M A trace of graupel yesterday afternoon. No new dents in the hail pad that I left out after the hail flurry of 9/9/10. I will bring the hail pad in for the season.
10/11/2010 7:00 AM 0.07 T M T M
10/12/2010 7:30 AM 0.15 0.3 M M M
10/13/2010 7:00 AM 0.22 T M 0.0 M Rain and snow turning to rain yesterday AM.
10/15/2010 7:00 AM 0.00 0.0 M 0.0 M
10/16/2010 7:00 AM 0.00 0.0 M 0.0 M
10/17/2010 7:00 AM 0.00 0.0 M 0.0 M
10/18/2010 7:00 AM 0.00 0.0 M 0.0 M
10/23/2010 7:00 AM 0.04 M M M M Here begins a set of records made by my wife while I was getting my knee fixed.
10/24/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
10/25/2010 7:50 AM 0.04 M M M M Rain turning to snow at 8AM
10/26/2010 7:50 AM 0.01 T M T M
10/27/2010 7:00 AM T T M T M
10/28/2010 7:00 AM 0.00 0.0 M 0.0 M
10/31/2010 7:00 AM 0.00 0.0 M 0.0 M
11/1/2010 7:00 AM T T M T M
11/2/2010 7:00 AM 0.00 0.0 M 0.0 M
11/3/2010 7:00 AM 0.00 0.0 M M M
11/4/2010 7:00 AM 0.00 0.0 M 0.0 M
11/5/2010 7:00 AM 0.00 0.0 M M M
11/6/2010 7:00 AM 0.00 0.0 M 0.0 M
11/7/2010 7:00 AM 0.00 0.0 M 0.0 M
11/8/2010 7:00 AM T 0.0 M 0.0 M
11/9/2010 9:00 AM 0.00 0.0 M 0.0 M Light snow was beginning at 9:35AM
11/10/2010 7:00 AM 0.38 2.8 0.38 2.8 0.38
11/11/2010 7:00 AM 0.00 0.0 M M M
11/12/2010 7:00 AM T T T T T
11/13/2010 7:00 AM 0.00 0.0 M M M
11/14/2010 7:00 AM 0.00 0.0 M M M
11/15/2010 7:30 AM T T T T T
11/16/2010 7:00 AM T T M T M
11/17/2010 7:00 AM 0.12 2.0 0.12 2.5 0.10
11/18/2010 7:00 AM 0.00 0.0 M M M
11/19/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
11/20/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
11/21/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
11/22/2010 8:00 AM 0.08 1.2 0.09 1.8 0.13
11/23/2010 7:00 AM 0.00 0.0 M 0.0 M
11/24/2010 7:00 AM T T M T M
11/25/2010 7:00 AM T T M T M
11/26/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
11/27/2010 7:00 AM 0.00 0.0 M M 0.00
11/29/2010 8:30 AM 0.00 0.0 0.00 0.0 0.00
12/1/2010 7:00 AM 0.00 0.0 M M M
12/2/2010 7:00 AM 0.00 0.0 M 0.0 M
12/3/2010 7:00 AM 0.00 0.0 M M M
12/4/2010 7:00 AM 0.00 0.0 M 0.0 M
12/5/2010 7:00 AM 0.00 0.0 M 0.0 M
12/7/2010 7:00 AM T T M T M
12/8/2010 7:00 AM 0.00 0.0 M 0.0 M
12/9/2010 7:00 AM 0.00 0.0 M 0.0 M
12/10/2010 7:00 AM 0.00 0.0 M 0.0 M
12/11/2010 7:00 AM 0.01 0.3 M 0.3 M
12/12/2010 7:00 AM 0.00 0.0 M 0.0 M
12/13/2010 7:00 AM 0.00 0.0 M 0.0 M
12/17/2010 8:00 AM 0.02 2.4 0.03 2.4 0.03
12/19/2010 8:00 AM T T M T M
12/20/2010 7:00 AM 0.00 0.0 M 0.0 M
12/21/2010 7:00 AM 0.00 0.0 M 0.0 M
12/22/2010 7:00 AM 0.00 0.0 M 0.0 M
12/23/2010 7:00 AM 0.00 0.0 M 0.0 M
12/24/2010 7:00 AM 0.00 0.0 M 0.0 M
12/31/2010 7:40 AM 0.16 3.5 0.16 3.5 0.23
1/1/2011 9:30 AM T T T 4.0 M About 0.5" of windblown snow accumulated over the last day.
1/2/2011 7:00 AM 0.00 0.0 M 3.0 M
1/3/2011 7:00 AM 0.00 0.0 M 2.5 M
1/4/2011 7:00 AM 0.00 0.0 M M M
1/5/2011 7:00 AM 0.00 0.0 M M M
1/6/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
1/7/2011 7:00 AM 0.00 0.0 M M M
1/8/2011 7:00 AM 0.00 0.0 M 0.0 M
1/9/2011 7:00 AM 0.00 0.0 M M M
1/10/2011 7:30 AM 0.24 5.0 0.37 6.0 0.45
1/11/2011 7:25 AM 0.00 0.0 M 4.0 M
1/12/2011 7:00 AM 0.00 0.0 M 3.0 M
1/13/2011 7:00 AM 0.00 0.0 M M M
1/14/2011 7:00 AM 0.00 0.0 M M M
1/15/2011 7:30 AM 0.00 0.0 M T M
1/16/2011 12:40 PM 0.00 0.0 M 0.0 M
1/17/2011 7:20 AM 0.01 0.1 M 0.1 M
1/18/2011 7:00 AM 0.00 0.0 M M M
1/19/2011 7:30 AM 0.00 0.0 M 0.0 M
1/20/2011 7:30 AM 0.13 2.6 0.18 2.6 0.18
1/21/2011 7:00 AM 0.00 0.0 M 1.5 M
1/22/2011 7:30 AM T T T 2.0 M
1/23/2011 8:50 AM 0.03 1.0 0.50 M M The new snow is probably all windblown.
1/24/2011 7:00 AM 0.00 0.0 M M M
1/25/2011 7:30 AM 0.04 0.5 0.04 1.0 0.06
1/26/2011 8:00 AM 0.00 0.0 M 0.5 M
1/27/2011 7:00 AM 0.00 0.0 M 0.0 M
1/28/2011 7:00 AM 0.00 0.0 M M M
1/29/2011 7:00 AM 0.00 0.0 M 0.0 M
1/30/2011 7:15 AM 0.00 0.0 M 0.0 M
1/31/2011 7:10 AM 0.00 0.0 M 0.0 0.00 Fog and frost. No precip.
2/1/2011 7:00 AM 0.05 0.8 0.10 0.8 0.10
2/2/2011 7:00 AM 0.01 0.2 0.02 0.3 M
2/3/2011 7:00 AM 0.00 0.0 M 0.5 M
2/4/2011 7:30 AM 0.04 1.0 0.08 2.0 M
2/5/2011 8:00 AM T T M 1.0 M
2/6/2011 7:20 AM 0.33 5.2 0.36 6.0 M
2/7/2011 7:20 AM 0.27 4.5 0.35 8.5 0.59
2/8/2011 7:25 AM 0.22 4.1 0.38 11.0 M
2/9/2011 7:00 AM 0.07 0.2 M 10.0 M
2/10/2011 7:00 AM 0.00 0.0 M 10.5 M
2/11/2011 7:00 AM 0.00 0.0 M 8.5 M
2/12/2011 7:00 AM 0.00 0.0 M 8.0 M
2/13/2011 7:00 AM 0.00 0.0 M 6.5 M
2/14/2011 7:00 AM 0.00 0.0 M 5.0 0.95
2/15/2011 7:30 AM 0.00 0.0 M 5.0 M
2/16/2011 7:15 AM 0.00 0.0 M 4.0 M
2/17/2011 6:55 AM T T M 1.5 M
2/18/2011 7:00 AM T T M T M
2/19/2011 7:00 AM 0.00 0.0 M T M
2/20/2011 7:20 AM 0.13 1.5 0.13 2.0 M
2/21/2011 7:00 AM 0.00 0.0 M 2.5 0.84
2/22/2011 7:00 AM 0.00 0.0 M T M The trace of total snow records the fact that about 50% of the ridge top where we live is covered by west-east trending snow drifts typically less than 1 foot thick.
2/23/2011 7:00 AM 0.00 0.0 M M M
2/24/2011 7:00 AM T 0.1 T T M
2/25/2011 7:00 AM T 0.1 T 0.5 M
2/26/2011 7:00 AM 0.00 0.0 M 0.0 M
2/27/2011 7:00 AM 0.00 0.0 M 0.0 M
2/28/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/1/2011 7:00 AM 0.00 0.0 M M M
3/2/2011 7:00 AM 0.00 0.0 M 0.0 0.00
3/3/2011 7:00 AM 0.00 0.0 M 0.0 M
3/4/2011 7:20 AM 0.20 0.3 0.10 0.5 M
3/5/2011 7:00 AM 0.00 0.0 M 0.0 M
3/6/2011 7:00 AM 0.00 0.0 M 0.0 M
3/7/2011 7:00 AM 0.04 0.5 0.04 0.5 0.04
3/8/2011 7:00 AM 0.01 0.1 0.01 0.0 M Snow or frost--how do you decide when you live near the top of the snow cloud? I called it snow.
3/9/2011 7:00 AM T T M T M
3/10/2011 7:00 AM 0.00 0.0 M 0.0 M
3/11/2011 7:00 AM 0.00 0.0 M M M
3/12/2011 7:00 AM 0.00 0.0 M M M
3/13/2011 8:00 AM 0.05 0.8 0.07 1.0 0.07
3/14/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/15/2011 7:00 AM 0.00 0.0 M M M
3/16/2011 7:00 AM 0.00 0.0 M 0.0 M
3/17/2011 7:00 AM 0.00 0.0 M 0.0 M
3/18/2011 7:00 AM 0.28 4.5 0.28 4.5 0.30
3/19/2011 7:00 AM 0.00 0.0 M 0.0 M
3/20/2011 7:00 AM 0.00 0.0 M 0.0 M
3/21/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/22/2011 7:00 AM 0.08 1.3 0.11 1.5 0.11
3/23/2011 7:00 AM T T M T M Snow showers occurred, at least once in the morning and once in the afternoon.
3/24/2011 7:00 AM 0.00 0.0 M M M
3/25/2011 7:00 AM T T M T M
3/26/2011 7:00 AM 0.00 0.0 M 0.0 M
3/27/2011 7:45 AM 0.01 0.2 0.01 0.2 0.01
3/28/2011 7:15 AM 0.12 1.8 0.12 2.5 0.15
3/29/2011 7:00 AM 0.01 0.1 0.01 0.1 0.01
3/30/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/31/2011 7:00 AM T T T T T
4/1/2011 7:00 AM 0.00 0.0 M M M
4/2/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/3/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/4/2011 7:00 AM 0.38 1.8 0.27 2.0 0.33
4/6/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Dew.
4/7/2011 7:00 AM 0.01 0.1 T T T
4/8/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/9/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/10/2011 7:00 AM 0.03 0.3 0.03 0.4 0.04 Graupel
4/11/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/12/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/13/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00 Heavy frost on the rain gauge
4/14/2011 7:01 AM 1.09 9.0 1.12 9.0 1.12
4/15/2011 7:20 AM 0.70 T 0.70 6.0 1.12
4/21/2011 7:06 AM 0.15 1.5 0.15 1.5 0.15
4/22/2011 7:00 AM T T T T T
4/23/2011 7:15 AM 0.03 0.8 0.03 0.8 0.03
4/24/2011 7:15 AM 0.08 0.4 0.03 0.5 0.03
4/25/2011 6:45 AM 0.34 3.5 M 3.5 0.30
4/26/2011 7:22 AM 0.06 1.2 0.08 1.8 0.14
4/27/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/28/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/29/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/30/2011 7:00 AM T T T T T
5/1/2011 7:00 AM T T T T T
5/2/2011 7:00 AM 0.01 0.3 0.01 0.3 0.01
5/3/2011 7:00 AM T T M T M
5/4/2011 7:00 AM 0.00 0.0 M 0.0 M
5/5/2011 7:00 AM T T M T M
5/6/2011 7:00 AM 0.00 0.0 M M M
5/7/2011 7:00 AM 0.00 0.0 M 0.0 M
5/8/2011 7:00 AM 0.00 0.0 M 0.0 M
5/9/2011 7:00 AM 0.00 0.0 M 0.0 M
5/10/2011 7:00 AM 0.00 0.0 M 0.0 M
5/11/2011 6:58 AM 0.43 4.0 0.44 4.0 0.44
5/12/2011 7:02 AM 0.81 4.5 0.81 8.0 0.95
5/13/2011 7:40 AM 0.00 0.0 M 4.0 0.59
5/14/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
5/15/2011 7:02 AM 0.39 3.8 0.47 4.0 0.47
5/16/2011 7:00 AM 0.02 T 0.02 T 0.02
5/17/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
5/18/2011 7:20 AM 0.02 0.0 M 0.0 M
5/20/2011 7:00 AM 0.38 3.5 0.31 6.5 0.50
5/21/2011 7:00 AM 0.06 T M T M
5/22/2011 7:00 AM T 0.0 M 0.0 M
5/23/2011 7:00 AM 0.00 0.0 M 0.0 M
5/24/2011 7:00 AM 0.07 0.0 M 0.0 M
5/25/2011 8:30 AM 0.06 0.0 M 0.0 M
5/26/2011 7:00 AM 0.00 0.0 M M M
5/27/2011 7:00 AM 0.00 0.0 M 0.0 M
5/28/2011 7:00 AM 0.00 0.0 M 0.0 M
5/29/2011 7:00 AM 0.00 0.0 M 0.0 M
5/30/2011 7:00 AM 0.00 0.0 M 0.0 M
5/31/2011 7:00 AM T 0.0 M 0.0 M I submitted a significant weather report yesterday at 8:15 PM when a windy cold front came through and it began to snow very hard. However, it didn't amount to anything and there was no snow on the ground nor moisture in the rain gauge this morning.
6/1/2011 7:00 AM 0.00 0.0 M 0.0 M
6/2/2011 7:00 AM 0.00 0.0 M M M
6/3/2011 7:00 AM 0.00 0.0 M 0.0 M
6/4/2011 7:00 AM 0.00 0.0 M 0.0 M
6/5/2011 7:00 AM 0.00 0.0 M 0.0 M
6/6/2011 7:00 AM 0.00 0.0 M M M
6/7/2011 7:00 AM 0.00 0.0 M M M
6/8/2011 7:00 AM 0.00 0.0 M M M
6/9/2011 7:00 AM T 0.0 M 0.0 M
6/10/2011 7:00 AM 0.00 0.0 M M M
6/11/2011 7:00 AM 0.01 0.0 M 0.0 M
6/12/2011 7:00 AM 0.00 0.0 M 0.0 M
6/13/2011 7:00 AM 0.00 0.0 M M M
6/14/2011 5:45 AM 0.00 0.0 M 0.0 M
6/15/2011 7:00 AM 0.00 0.0 M M M
6/16/2011 7:00 AM 0.00 0.0 M 0.0 M
6/17/2011 7:00 AM 0.00 0.0 M 0.0 M
6/18/2011 9:00 AM 0.16 0.0 M 0.0 M
6/19/2011 7:00 AM 0.00 0.0 M 0.0 M
6/20/2011 7:01 AM 2.20 0.0 M 0.0 M
6/21/2011 6:15 AM 0.12 0.0 M 0.0 M
6/22/2011 6:15 AM T T M T M A trace of moisture fell as very fine hail (less than rice size), probably during the night. A separate hail report will be submitted.
6/23/2011 7:00 AM 0.00 0.0 M 0.0 M
6/24/2011 7:00 AM 0.00 0.0 M 0.0 M
6/25/2011 7:00 AM 0.00 0.0 M M M
6/26/2011 7:00 AM 0.00 0.0 M M M
6/27/2011 7:00 AM 0.00 0.0 M 0.0 M
6/28/2011 7:00 AM 0.00 0.0 M 0.0 M
6/29/2011 7:00 AM 0.00 0.0 M 0.0 M
6/30/2011 7:00 AM 0.01 0.0 M 0.0 M
7/1/2011 7:00 AM 0.09 0.0 M 0.0 M
7/2/2011 7:45 AM 0.02 0.0 M 0.0 M Much of the moisture came as soft hail. See separate hail report.
7/3/2011 7:00 AM 0.00 0.0 M 0.0 M
7/4/2011 7:00 AM 0.00 0.0 M 0.0 M
7/5/2011 7:00 AM 0.00 0.0 M 0.0 M
7/6/2011 6:50 AM 0.06 0.0 M 0.0 M
7/7/2011 6:00 AM T 0.0 M 0.0 M
7/8/2011 7:00 AM 1.14 0.0 M M M The heaviest rain began at 5:50 PM on 7/7/11. See separate significant weather event.
7/9/2011 7:00 AM T 0.0 M 0.0 M
7/10/2011 7:00 AM 0.40 0.0 M 0.0 M All precipitation happened between 4:50 and 6:00 PM according to neighbor's automatic weather station 0.5 miles east of our rain gauge. See significant weather and hail reports dated 7/9/11.
7/11/2011 7:00 AM 0.45 0.0 M 0.0 M Hail pad seriously creased by heavy rain, but no hail strikes since pad was collected Saturday.
7/12/2011 6:30 AM 0.39 0.0 0.00 M M Again the hail pad is creased by torrential rains, but no hail.
7/13/2011 7:00 AM 0.18 0.0 M 0.0 M
7/14/2011 6:45 AM 0.70 0.0 M 0.0 M Accurate times are from Wunderground.com station KCOGOLDE14 0.5 miles east. See separate hail report.
7/15/2011 6:00 AM 0.56 0.0 M 0.0 M See hail reports of
7/16/2011 9:00 AM 0.01 0.0 M 0.0 M
7/17/2011 7:30 AM 0.01 M M M M
7/18/2011 7:00 AM 0.00 0.0 M 0.0 M
7/19/2011 7:00 AM 0.02 0.0 M 0.0 M
7/20/2011 6:15 AM 0.70 0.0 M 0.0 M There were two periods of heavy precipitation, one from 2:40 PM to 2:55 PM, reported at 3:05 PM, accompanied with light hail, accounting for .45 in. Another intense burst of precipitation occurred as hail between 4:19 PM and 4:23 PM, ending at 5:33 PM, amounting to .25 in. Total precipitation for the 24 hours ending 7 AM was .45 + .25 =.70 in.
7/21/2011 7:00 AM T 0.0 M 0.0 M
7/22/2011 7:00 AM 0.00 0.0 M 0.0 M
7/23/2011 7:00 AM 0.00 0.0 M 0.0 M
7/24/2011 7:00 AM 0.00 0.0 M 0.0 M
7/25/2011 6:30 AM 0.06 0.0 M 0.0 M There were 2 clear hail strikes and an estimated 288 "splats". See separate hail report.
7/27/2011 6:30 AM 0.84 0.0 M 0.0 M See separate hail report. Chronology of this storm is well shown in Weather Underground station KCOGOLDE14 1/2 mi east. Temperature at that station dropped from 70.8 at 17:46 to 50.8 at 18:26. Light winds were from the west. Hail and rain were nearly vertical
7/28/2011 5:52 AM 0.14 0.0 M 0.0 M
7/29/2011 6:30 AM 0.01 0.0 M 0.0 M
7/30/2011 7:00 AM T 0.0 M 0.0 M
8/1/2011 7:00 AM 0.00 0.0 M 0.0 M
8/2/2011 7:00 AM 0.02 0.0 M 0.0 M
8/3/2011 7:00 AM 0.12 0.0 M 0.0 M
8/4/2011 7:00 AM 0.29 0.0 M 0.0 M
8/5/2011 7:00 AM T 0.0 M 0.0 M
8/6/2011 7:00 AM 0.00 0.0 M 0.0 M
8/7/2011 7:00 AM T 0.0 M 0.0 M
8/8/2011 7:00 AM 0.00 0.0 M M M
8/9/2011 7:00 AM 0.00 0.0 M 0.0 M
8/10/2011 7:00 AM 0.00 0.0 M M M
8/11/2011 7:00 AM 0.00 0.0 M 0.0 M
8/12/2011 7:00 AM T 0.0 M 0.0 M
8/13/2011 7:00 AM 0.00 0.0 M 0.0 M
8/14/2011 7:00 AM 0.00 0.0 M 0.0 M
8/15/2011 6:00 AM 0.10 0.0 M 0.0 M
8/16/2011 7:00 AM 0.00 0.0 M 0.0 M
8/17/2011 7:00 AM 0.06 0.0 M M M
8/18/2011 7:00 AM 0.00 0.0 M 0.0 M
8/19/2011 7:00 AM 0.00 0.0 M 0.0 M
8/20/2011 6:30 AM 0.21 0.0 M 0.0 M
8/21/2011 7:00 AM 0.00 0.0 M 0.0 M
8/22/2011 7:00 AM 0.02 0.0 M 0.0 M
8/23/2011 7:00 AM 0.05 0.0 M 0.0 M
8/24/2011 7:00 AM 0.00 0.0 M 0.0 M
8/25/2011 7:00 AM 0.00 0.0 M 0.0 M
8/26/2011 7:00 AM 0.13 0.0 M 0.0 M
8/27/2011 7:00 AM 0.01 0.0 M 0.0 M
8/28/2011 7:00 AM 0.10 0.0 M 0.0 M
8/29/2011 7:00 AM T 0.0 M 0.0 M
8/30/2011 7:00 AM 0.00 0.0 M 0.0 M
8/31/2011 7:00 AM 0.12 0.0 M 0.0 M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
12/25/2010 12/30/2010 8:00 AM 6 0.00 0.0 0.00 Snow began shortly after I checked rain gauge.
4/16/2011 4/20/2011 7:45 AM 5 0.11 0.5 0.04
9/1/2011 10/02/2011 7:00 AM 32 1.13 0.0 0.00



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
1/1/0001 12:00 AM Hail pad observed and collected at 6PM on 6/17/2011. Time of storm not known. I was in town. I surmised that the hail fell vertically from symmetry of strikes on hail pad. 1/4" Pea Size Rice Rice Hard False vertical 2064
1/1/0001 12:00 AM I commonly see hail impacts this small, but they usually occur as a background for larger hail stones. This time the hail pad was contained an estimated average of 100 strikes per square inch, for a total of 14400 indentations. There are ridges on the aluminum foil that suggested that there was a build-up of hail between the ridges. The hail had all melted by 6:10 AM. Rice Rice Rice Hard no damage False 9999 0.2 0
7/1/2011 9:55 PM I was in Denver in the evening and missed the storm, which the neighbors said happened between 7+ and 10+ PM. This coincides with a period of dead calm that lasted from 19:21 to 22:23. I picked 10:55 PM (21:55) to as the most likely time for the rain and hail. Humidity reached a maximum of 62% at 21:55 (temp 44.1 deg F)and dropped to 53% at 22:18 (temp 40.2 deg F. I attribute this temperature and humidity drop to the precipitation. Hence the inferred 1 minute accuracy in the timing of the main part of the storm. The neighbors' automatic weather station (Weather Underground station KCOGOLDE14) is about a half mile east of us and 235 ft lower than the elevation of our rain gauge at 8750 ft. 3/8" 3/8" 1/4" Pea Size Hard|Soft|Mixed 27 1min no damage False vertical 160 1
7/9/2011 5:00 PM We were at a neighbor's house 0.7 miles to the NW when the storm began and where we discovered hail stones. When we returned to the house at 7:50 PM, the tomato plants were damaged. From another neighbor's automatic weather station 0.5 mi east we can tell that the precipitation all occurred between 4:50 and 6:00 PM. 1/4" Pea Size 1/4" Pea Size Rice Hard 30 3min minor leaf damage False 10-20 1200 .4
7/10/2011 1:52 PM Precise timing is taken from station KCOGOLDE14 0.5 miles east. At the time of submission (5:37PM) 0.32 in. precipitation had fallen since 2:49 PM. 0.14 inches of the total occurred between 2:49 PM and 2:06 PM, when I brought in the hail pad. Winds spiked to from 7 to 35 mph 0.5 miles east at 13:52. There was no more hail, and I replaced the hail pad at 2:10 PM. Data from station KCOGOLDE14 0.5 miles east: 13:43 67.8 °F 48.5 °F 22.06in ESE 2.0mph 7.0mph 50% 0.00in --- 13:47 67.4 °F 50.7 °F 22.07in South 1.0mph 7.0mph 55% 0.00in --- 13:52 65.5 °F 46.9 °F 22.11in WNW 26.0mph 36.0mph 51% 0.00in --- 13:53 65.1 °F 46.5 °F 22.11in West 15.0mph 36.0mph 51% 0.01in --- 13:58 58.1 °F 48.8 °F 22.07in West 3.0mph 36.0mph 71% 0.08in --- 14:03 55.6 °F 50.8 °F 22.06in WSW 1.0mph 2.0mph 84% 0.08in --- 14:08 54.5 °F 50.4 °F 22.05in West 6.0mph 9.0mph 86% 0.08in --- 14:13 55.1 °F 48.4 °F 22.06in WSW 6.0mph 12.0mph 78% 0.08in --- 14:18 54.7 °F 49.7 °F 22.06in WSW 6.0mph 12.0mph 83% 0.08in 1/4" Pea Size Rice Rice Hard|Soft 5 3min no damage False After rain 30-40 2304 .2
7/13/2011 10:39 PM I was in town during most of the storm and found hail up to 2 inches thick on the ground when I returned about 11:30 PM. I have only the neighbor's automatic station (KCOGOLDE14) data to give an indication as to time, but not sequence, of precipitation and hail. It was one hell of a storm, the effects of which (flooding, shredded leaves) we saw on the drive home on Golden Gate Canyon, Robinson Hill, and Douglas Mt Dr. 3/8" 1/4" Pea Size Rice Hard 83 10min no damage.minor leaf damage.shredded leaves False 10-20 1720 0.3
7/14/2011 12:57 PM Storm began with hard half-inch stones hitting the greenhouse windows at 12:57 PM. Hail had turned to rain by 1:03 PM and ended about 1:15. Hail pad collected at 1:25 PM. I have no more pads to put out... 5:54 PM. My wife brought home and I put out a new hail pad. Precipitation since I emptied the gauge at 7:00 AM has been 0.55 inches. 1/2" Grape 1/2" Grape Rice Hard|White Ice 6 1min minor leaf damage Continuous False Before rain Before smaller hail 10-20 256 1.5
7/19/2011 2:40 PM This hail storm was a minor addition to a torrential rain storm that occurred between 2:40 and 2:55 PM. There was more evidence of heavy rain than of hail. I am leaving the hail pad in place for another day because it is not very interesting. Rice Rice Rice Hard 5 3min no damage True 10-20 288 .75
7/19/2011 4:19 PM This was a much more energetic hail storm than the one that occurred at 2:40 PM (pad not retrieved. The hail pad shows the sum effect of both events. In addition to the 400 deep pea sized and 3/8" strikes, there are perhaps 200 "splat" sites typically 3/8" in diameter that I attribute to very soft hail that erased some deeper sites and all of the rice sized strikes seen on the pad from the 2:40 PM storm. Rain gauge is up to .70 inches at 5:33 PM. 3/8" 1/4" Pea Size 1/4" Pea Size Hard|Soft|Mixed|White Ice 4 1min Continuous True Same time as rain 10-20 400 0
7/24/2011 11:05 PM Attempt to include notes failed. Try again 1/4" Pea Size Rice Rice Hard 1 3min no damage True 10-20 7 10
7/26/2011 6:01 PM I changed the hail timing from intermittent to continuous when my wife came into the house about 6:15 PM to say that she had been in her car in the barn with the windows rolled up because the noise was unbearable under the steel roof. 1/4" Pea Size Rice Rice Hard 10 1min no damage Continuous True After rain vertical 2886 0.3