Station Overview Station Location
Station Number CO-JF-331 Latitude 39.88175
Station Name Golden 12.5 NW Longitude -105.390301
County Jefferson Elevation (ft) 9192



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 11 1.66 1.70 31 1.70 31 0.00 0 0 7 4 22.0 4 10
Nov 11 1.44 1.42 30 1.42 30 0.00 0 0 4 8 18.9 5 23
Dec 11 1.33 2.45 31 2.45 31 0.00 0 0 10 3 63.2 11 25
Jan 12 0.95 0.65 31 0.65 31 0.00 0 0 7 5 10.4 7 31
Feb 12 1.07 3.65 29 3.65 29 0.00 0 0 11 8 65.5 14 29
March 12 2.93 0.05 31 0.05 31 0.00 0 0 3 7 1.1 4 25
April 12 3.55 1.71 30 1.71 30 0.00 0 0 7 7 14.8 5 6
May 12 2.91 1.20 30 1.20 30 0.00 0 0 6 6 10.1 6 4
June 12 2.45 0.63 30 0.63 30 0.00 0 0 8 4 0.0 0 0
July 12 2.83 4.13 31 4.13 31 0.00 0 0 20 4 0.0 0 0
Aug 12 3.00 0.88 31 0.88 31 0.00 0 0 6 5 0.0 0 0
Sept 12 1.79 1.90 30 1.90 30 0.00 0 0 9 3 0.0 0 0
Water Year Totals: 25.91" 20.37" 365 days 20.37" 365 0.00" 0 days 0 98 days 64 days 206.0" 56 days 153 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
10/1/2011 0.00
10/2/2011 0.00
10/3/2011 T
10/4/2011 0.00
10/5/2011 T
10/6/2011 0.00
10/7/2011 0.09
10/8/2011 0.28
10/9/2011 0.34
10/10/2011 T
10/11/2011 T
10/12/2011 0.02
10/13/2011 0.00
10/14/2011 0.00
10/15/2011 0.00
10/16/2011 0.00
10/17/2011 0.00
10/18/2011 0.01
10/19/2011 0.00
10/20/2011 0.00
10/21/2011 0.00
10/22/2011 0.00
10/23/2011 0.00
10/24/2011 0.00
10/25/2011 0.00
10/26/2011 0.79
10/27/2011 0.17
10/28/2011 0.00
10/29/2011 0.00
10/30/2011 0.00
10/31/2011 0.00
11/1/2011 0.00
11/2/2011 1.11
11/3/2011 0.09
11/4/2011 0.00
11/5/2011 0.00
11/6/2011 T
11/7/2011 0.00
11/8/2011 T
11/9/2011 0.00
11/10/2011 0.00
11/11/2011 0.00
11/12/2011 0.00
11/13/2011 T
11/14/2011 0.10
11/15/2011 T
11/16/2011 T
11/17/2011 0.00
11/18/2011 0.00
11/19/2011 T
11/20/2011 T
11/21/2011 0.00
11/22/2011 T
11/23/2011 0.00
11/24/2011 0.00
11/25/2011 0.00
11/26/2011 0.12
11/27/2011 0.00
11/28/2011 0.00
11/29/2011 0.00
11/30/2011 0.00
12/1/2011 0.39
12/2/2011 0.29
12/3/2011 0.24
12/4/2011 0.08
12/5/2011 0.21
12/6/2011 T
12/7/2011 0.00
12/8/2011 T
12/9/2011 0.01
12/10/2011 0.00
12/11/2011 0.00
12/12/2011 0.00
12/13/2011 0.00
12/14/2011 0.00
12/15/2011 0.00
12/16/2011 0.00
12/17/2011 0.00
12/18/2011 0.00
12/19/2011 0.00
12/20/2011 0.02
12/21/2011 0.00
12/22/2011 1.16
12/23/2011 0.04
12/24/2011 0.00
12/25/2011 0.00
12/26/2011 0.00
12/27/2011 0.00
12/28/2011 0.00
12/29/2011 0.00
12/30/2011 0.01
12/31/2011 T
Day of YearDaily PrcpMultiday Prcp
1/1/2012 0.08
1/2/2012 0.00
1/3/2012 0.00
1/4/2012 0.00
1/5/2012 0.00
1/6/2012 0.00
1/7/2012 0.00
1/8/2012 0.28
1/9/2012 0.00
1/10/2012 0.00
1/11/2012 0.06
1/12/2012 0.13
1/13/2012 0.00
1/14/2012 0.00
1/15/2012 0.00
1/16/2012 0.00
1/17/2012 0.02
1/18/2012 T
1/19/2012 0.00
1/20/2012 T
1/21/2012 T
1/22/2012 T
1/23/2012 0.00
1/24/2012 0.00
1/25/2012 T
1/26/2012 0.00
1/27/2012 0.07
1/28/2012 0.01
1/29/2012 0.00
1/30/2012 0.00
1/31/2012 0.00
2/1/2012 0.00
2/2/2012 0.00
2/3/2012 1.20
2/4/2012 1.25
2/5/2012 0.02
2/6/2012 0.00
2/7/2012 0.15
2/8/2012 T
2/9/2012 0.01
2/10/2012 T
2/11/2012 0.06
2/12/2012 T
2/13/2012 0.01
2/14/2012 T
2/15/2012 0.00
2/16/2012 0.00
2/17/2012 0.00
2/18/2012 0.01
2/19/2012 0.00
2/20/2012 T
2/21/2012 T
2/22/2012 T
2/23/2012 0.60
2/24/2012 0.24
2/25/2012 T
2/26/2012 0.00
2/27/2012 0.00
2/28/2012 0.00
2/29/2012 0.10
3/1/2012 0.01
3/2/2012 0.03
3/3/2012 T
3/4/2012 T
3/5/2012 0.00
3/6/2012 0.00
3/7/2012 T
3/8/2012 T
3/9/2012 0.00
3/10/2012 0.00
3/11/2012 T
3/12/2012 0.01
3/13/2012 0.00
3/14/2012 0.00
3/15/2012 0.00
3/16/2012 0.00
3/17/2012 0.00
3/18/2012 0.00
3/19/2012 T
3/20/2012 T
3/21/2012 0.00
3/22/2012 0.00
3/23/2012 0.00
3/24/2012 0.00
3/25/2012 0.00
3/26/2012 0.00
3/27/2012 0.00
3/28/2012 0.00
3/29/2012 0.00
3/30/2012 0.00
3/31/2012 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2012 0.00
4/2/2012 T
4/3/2012 0.52
4/4/2012 0.31
4/5/2012 0.00
4/6/2012 0.00
4/7/2012 0.00
4/8/2012 0.00
4/9/2012 0.00
4/10/2012 0.00
4/11/2012 0.00
4/12/2012 0.12
4/13/2012 T
4/14/2012 0.00
4/15/2012 0.62
4/16/2012 0.03
4/17/2012 T
4/18/2012 0.00
4/19/2012 T
4/20/2012 0.01
4/21/2012 T
4/22/2012 0.00
4/23/2012 0.00
4/24/2012 0.00
4/25/2012 0.00
4/26/2012 T
4/27/2012 0.10
4/28/2012 T
4/29/2012 0.00
4/30/2012 0.00
5/1/2012 0.00
5/2/2012 0.00
5/3/2012 0.00
5/4/2012 0.00
5/5/2012 0.00
5/6/2012 T
5/7/2012 0.39
5/8/2012 0.05
5/9/2012 0.00
5/10/2012 0.00
5/11/2012 T
5/12/2012 0.11
5/13/2012 0.09
5/14/2012 T
5/15/2012 0.00
5/16/2012 0.00
5/17/2012 0.00
5/18/2012 T
5/19/2012 T
5/20/2012 M
5/21/2012 0.05
5/22/2012 0.00
5/23/2012 0.00
5/24/2012 0.51
5/25/2012 T
5/26/2012 0.00
5/27/2012 0.00
5/28/2012 0.00
5/29/2012 0.00
5/30/2012 0.00
5/31/2012 0.00
6/1/2012 0.00
6/2/2012 0.00
6/3/2012 0.14
6/4/2012 0.01
6/5/2012 0.00
6/6/2012 0.00
6/7/2012 0.18
6/8/2012 T
6/9/2012 0.00
6/10/2012 0.00
6/11/2012 0.00
6/12/2012 0.00
6/13/2012 0.00
6/14/2012 0.00
6/15/2012 T
6/16/2012 0.05
6/17/2012 0.06
6/18/2012 0.00
6/19/2012 0.00
6/20/2012 0.00
6/21/2012 0.00
6/22/2012 0.00
6/23/2012 0.00
6/24/2012 0.00
6/25/2012 T
6/26/2012 0.00
6/27/2012 0.04
6/28/2012 0.14
6/29/2012 0.01
6/30/2012 T
Day of YearDaily PrcpMultiday Prcp
7/1/2012 T
7/2/2012 T
7/3/2012 0.08
7/4/2012 0.05
7/5/2012 0.00
7/6/2012 0.03
7/7/2012 0.80
7/8/2012 0.26
7/9/2012 0.36
7/10/2012 T
7/11/2012 0.00
7/12/2012 T
7/13/2012 0.04
7/14/2012 0.00
7/15/2012 0.00
7/16/2012 0.04
7/17/2012 0.23
7/18/2012 0.15
7/19/2012 0.01
7/20/2012 0.00
7/21/2012 0.00
7/22/2012 0.02
7/23/2012 0.01
7/24/2012 0.49
7/25/2012 0.14
7/26/2012 0.01
7/27/2012 0.00
7/28/2012 0.28
7/29/2012 0.02
7/30/2012 0.28
7/31/2012 0.83
8/1/2012 0.01
8/2/2012 0.30
8/3/2012 0.41
8/4/2012 0.00
8/5/2012 0.00
8/6/2012 0.00
8/7/2012 0.00
8/8/2012 T
8/9/2012 0.00
8/10/2012 T
8/11/2012 T
8/12/2012 0.00
8/13/2012 0.00
8/14/2012 T
8/15/2012 0.00
8/16/2012 0.00
8/17/2012 0.00
8/18/2012 0.00
8/19/2012 0.00
8/20/2012 0.00
8/21/2012 0.05
8/22/2012 0.00
8/23/2012 0.10
8/24/2012 0.01
8/25/2012 T
8/26/2012 0.00
8/27/2012 0.00
8/28/2012 0.00
8/29/2012 0.00
8/30/2012 0.00
8/31/2012 0.00
9/1/2012 0.00
9/2/2012 0.30
9/3/2012 T
9/4/2012 0.00
9/5/2012 0.00
9/6/2012 0.00
9/7/2012 0.08
9/8/2012 0.01
9/9/2012 0.00
9/10/2012 0.00
9/11/2012 0.00
9/12/2012 0.53
9/13/2012 0.37
9/14/2012 0.00
9/15/2012 0.00
9/16/2012 0.00
9/17/2012 0.00
9/18/2012 0.04
9/19/2012 0.00
9/20/2012 0.00
9/21/2012 0.00
9/22/2012 0.00
9/23/2012 0.00
9/24/2012 0.00
9/25/2012 0.00
9/26/2012 0.38
9/27/2012 0.14
9/28/2012 0.05
9/29/2012 T
9/30/2012 T



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 6:00 AM 0.00 0.0 M M M
10/2/2011 6:00 AM 0.00 0.0 M M M
10/3/2011 6:00 AM T 0.0 M 0.0 M
10/4/2011 6:00 AM 0.00 0.0 M 0.0 M
10/5/2011 6:00 AM T 0.0 M 0.0 M
10/6/2011 6:00 AM 0.00 0.0 M 0.0 M
10/7/2011 6:00 AM 0.09 T M 0.0 M 28F, calm, clear. Just about all fell as rain. a few flakes late.
10/8/2011 8:05 AM 0.28 3.3 M 3.0 M light-mod snow, 26F, RH 80%, pressure steady 21.22 at 9200'.
10/9/2011 10:00 AM 0.34 6.3 M 4.0 M 8.3" storm total.
10/10/2011 6:00 AM T T M 2.0 M
10/11/2011 6:00 AM T T M 1.0 M just a few flakes in the air early this morning.
10/12/2011 6:00 AM 0.02 T M T M a mix of rain and snow blowing off the divide last evening. Windy, west wind 20 G40.
10/13/2011 6:00 AM 0.00 0.0 M T M
10/14/2011 6:00 AM 0.00 0.0 M T M
10/15/2011 6:00 AM 0.00 0.0 M T M
10/16/2011 6:00 AM 0.00 0.0 M 0.0 M
10/17/2011 6:00 AM 0.00 0.0 M 0.0 M
10/18/2011 6:00 AM 0.01 T M T M flurries, 30F, calm.
10/19/2011 6:00 AM 0.00 0.0 M 0.0 M
10/20/2011 6:00 AM 0.00 0.0 M 0.0 M
10/21/2011 6:00 AM 0.00 0.0 M 0.0 M
10/22/2011 7:00 AM 0.00 0.0 M 0.0 M
10/23/2011 7:00 AM 0.00 0.0 M 0.0 M
10/24/2011 6:00 AM 0.00 0.0 M 0.0 M
10/25/2011 6:00 AM 0.00 0.0 M 0.0 M
10/26/2011 8:30 AM 0.79 10.0 M 10.0 M mod snow continues. 19F, S wind 1-2, RH 80%, press 21.24" at 9200' dropping slightly overnight.
10/27/2011 6:00 AM 0.17 2.4 M 11.5 M Storm total: 12.4". SWE=0.96". The first 4.8" had a water content of 10.0%, the next 5.2" was 6.0%, and the final 2.4" was 7.1%. Highest snowfall rates occurred Tuesday evening between 9pm and 11pm averaging 1.1 in/hr from 9-10pm and and 1.0 in/hr per hour from 10-11pm.
10/28/2011 6:00 AM 0.00 0.0 M 8.0 M
10/29/2011 7:00 AM 0.00 0.0 M 5.0 M NW wind 15-20, G40
10/30/2011 7:00 AM 0.00 0.0 M 4.5 M
10/31/2011 6:00 AM 0.00 0.0 M 3.5 M
11/1/2011 6:00 AM 0.00 0.0 M 1.0 M still a 6" base on north and protected flat aspects.
11/2/2011 7:10 AM 1.11 13.9 M 14.0 M Measured by neighbor.moderate snow continues with additional quarter inch in 45 minutes after first measure. No wind.
11/3/2011 6:00 AM 0.09 1.7 M 13.0 M 15.6" storm total. 1.20" SWE
11/4/2011 6:00 AM 0.00 0.0 M 8.0 M
11/5/2011 7:00 AM 0.00 0.0 M 7.5 M
11/6/2011 7:00 AM T T M 5.5 M
11/7/2011 6:00 AM 0.00 0.0 M 5.0 M
11/8/2011 6:00 AM T 0.0 M 5.0 M
11/9/2011 6:00 AM 0.00 0.0 M 5.0 M
11/10/2011 6:00 AM 0.00 0.0 M 4.5 M
11/11/2011 6:00 AM 0.00 0.0 M 4.0 M
11/12/2011 6:00 AM 0.00 0.0 M 3.0 M
11/13/2011 6:00 AM T T M 2.0 M
11/14/2011 6:00 AM 0.10 1.3 M 3.0 M
11/15/2011 6:00 AM T T M 2.0 M flurries blowing off the divide this morning.
11/16/2011 6:00 AM T T M 2.0 M
11/17/2011 6:00 AM 0.00 0.0 M 2.0 M
11/18/2011 6:00 AM 0.00 0.0 M 1.5 M
11/19/2011 7:00 AM T T M 1.0 M light snow, 26F, NW wind 5-10 G15, RH 64%, press 20.99" at 9200' steady.
11/20/2011 6:00 AM T 0.1 M 1.0 M a tenth new in the morning, after yesterday report, did not last more than a few hours on the ground.
11/21/2011 6:00 AM 0.00 0.0 M 1.0 M still a solid 4-6" of snow on northern aspects and flat areas.
11/22/2011 6:00 AM T T M T M few passing flurries last night
11/23/2011 6:00 AM 0.00 0.0 M T M
11/24/2011 7:00 AM 0.00 0.0 M T M
11/25/2011 7:00 AM 0.00 0.0 M T M
11/26/2011 7:00 AM 0.12 1.9 M 2.0 M Clear, 15F, WSW wind 5-10 G15, RH 60%, Press 21.51 at 9200' rising sharply.
11/27/2011 8:00 AM 0.00 0.0 M 1.0 M
11/28/2011 6:00 AM 0.00 0.0 M T M
11/29/2011 6:00 AM 0.00 0.0 M T M
11/30/2011 6:00 AM 0.00 0.0 M T M
12/1/2011 6:05 AM 0.39 6.1 M 6.0 M heavy snow, 17F, variable NNE-SE wind 1-5, RH 79%, pressure 21.40" at 9200' rising.
12/2/2011 7:00 AM 0.29 7.8 M 13.0 M 13.9" storm total, 0.68" SWE
12/3/2011 7:15 AM 0.24 10.4 M 17.0 M moderate snow, 8F, NE wind 1-3, RH 78%. happy powder day! another 10.4" and more coming down!
12/4/2011 7:00 AM 0.08 2.0 M 14.0 M mostly cloudy, 7F, N wind 1-5, RH 74%, Press 21.15 steady. 25" base on flat and north to east aspects. 14" on south to west aspects.
12/5/2011 6:00 AM 0.21 4.0 M 15.5 M msotly cloudy, -3F. -11F in coal creek canyon.
12/6/2011 6:00 AM T 0.1 M 15.0 M
12/7/2011 6:00 AM 0.00 0.0 M 14.0 M
12/8/2011 6:30 AM T T M 13.0 M light snow, 24F. almost a tenth of an inch on the ground.
12/9/2011 6:00 AM 0.01 0.1 M 13.0 M
12/10/2011 7:00 AM 0.00 0.0 M 12.0 M
12/11/2011 7:00 AM 0.00 0.0 M 12.0 M
12/12/2011 6:00 AM 0.00 0.0 M 11.5 M
12/13/2011 6:00 AM 0.00 0.0 M 11.0 M
12/14/2011 6:00 AM 0.00 0.0 M 10.0 M
12/15/2011 6:00 AM 0.00 0.0 M 9.0 M
12/16/2011 6:00 AM 0.00 0.0 M 8.0 M
12/17/2011 7:00 AM 0.00 0.0 M 7.0 M
12/18/2011 7:00 AM 0.00 0.0 M 6.0 M
12/19/2011 6:00 AM 0.00 0.0 M 5.0 M
12/20/2011 6:00 AM 0.02 0.4 M 5.5 M
12/21/2011 6:00 AM 0.00 0.0 M 5.0 M
12/22/2011 7:15 AM 1.16 30.0 1.16 32.5 M 30.0" incrementally recorded has compacted to 27.5" on the ground. gauge catch was overwhelmed overnight. first 7.0" was ok and caught 0.32" SWE. next 23.0" new contained 0.84" SWE from core. 0.32+0.84=1.16.
12/23/2011 7:00 AM 0.04 2.1 M 29.5 M supplemental snow stick depth = 36.0" snow depth on flat and north aspects.
12/24/2011 6:00 AM 0.00 0.0 M M M
12/25/2011 6:00 AM 0.00 0.0 M M M
12/26/2011 6:00 AM 0.00 0.0 M M M
12/27/2011 6:00 AM 0.00 0.0 M M M
12/28/2011 6:00 AM 0.00 0.0 M M M
12/29/2011 6:00 AM 0.00 0.0 M M M
12/30/2011 7:00 AM 0.01 0.2 M 12.0 M supplemental snow stick depth = 23.0" snow depth on flat and north aspects.
12/31/2011 7:00 AM T T M 11.5 M very windy, W wind sustained 30's, G40's. 1.0" new as of 11:30am (.05 gauge, .08 core), with snow and blowing snow reducing visibility to 1 mile sometimes less.
1/1/2012 7:00 AM 0.08 1.0 M 12.0 M
1/2/2012 6:00 AM 0.00 0.0 M 10.5 M
1/3/2012 6:00 AM 0.00 0.0 M 9.5 M
1/4/2012 6:00 AM 0.00 0.0 M 9.0 M
1/5/2012 6:00 AM 0.00 0.0 M 8.5 M
1/6/2012 6:00 AM 0.00 0.0 M 7.0 M
1/7/2012 7:00 AM 0.00 0.0 M 6.0 M
1/8/2012 7:00 AM 0.28 3.5 M 9.0 M
1/9/2012 6:00 AM 0.00 0.0 M 8.0 M
1/10/2012 6:00 AM 0.00 0.0 M 8.0 M
1/11/2012 6:55 AM 0.06 1.8 M 8.0 M Heavy snow, 14F, SE-NE wind 0-1, RH 70%, press, 21.17 falling.
1/12/2012 6:00 AM 0.13 2.9 M 10.5 M
1/13/2012 6:00 AM 0.00 0.0 M 8.0 M
1/14/2012 6:00 AM 0.00 0.0 M 7.5 M
1/15/2012 6:00 AM 0.00 0.0 M 7.0 M
1/16/2012 6:00 AM 0.00 0.0 M 6.5 M
1/17/2012 6:00 AM 0.02 0.4 M 6.5 M
1/18/2012 6:00 AM T T M 6.0 M W winds only gusted to 40mph last night.
1/19/2012 6:00 AM 0.00 0.0 M 6.0 M W winds 20 mph, G40. Only a few gusts around 40. Not quite the wind event predicted, here at least.
1/20/2012 7:00 AM T T M 5.0 M
1/21/2012 6:00 AM T 0.0 M 4.5 M
1/22/2012 6:00 AM T 0.0 M 4.5 M
1/23/2012 6:00 AM 0.00 0.0 M 4.5 M
1/24/2012 6:00 AM 0.00 0.0 M 4.0 M
1/25/2012 6:00 AM T T M 4.0 M
1/26/2012 6:00 AM 0.00 0.0 M 4.0 M
1/27/2012 7:00 AM 0.07 0.6 0.06 4.5 M gauge catch slightly heavy due to wind, core is 0.06"
1/28/2012 7:00 AM 0.01 0.2 M 4.0 M
1/29/2012 7:00 AM 0.00 0.0 M 4.0 M
1/30/2012 6:00 AM 0.00 0.0 M 4.0 M
1/31/2012 6:00 AM 0.00 0.0 M 4.0 M
2/1/2012 6:00 AM 0.00 0.0 M 3.5 M
2/2/2012 6:00 AM 0.00 0.0 M 3.5 M aux snowstick = 20" (located in an open flat area at 9400 below Miramonte Ridge)
2/3/2012 7:15 AM 1.20 21.9 1.29 24.5 M
2/4/2012 7:00 AM 1.25 24.6 1.31 40.5 M
2/5/2012 7:00 AM 0.02 0.3 0.20 33.0 M Storm Total: 46.8", SWE 2.47" I trained and recruited two neighbors to measure this storm while I was out of town. The neighbors are both within 100 yards of my station, and we jointly QC'd the data. aux snowstick = 52" (located in an open flat area at 9400 below Miramonte Ridge).
2/6/2012 6:00 AM 0.00 0.0 M 29.0 M aux snowstick = 48" (located in an open flat area at 9400 below Miramonte Ridge)
2/7/2012 6:15 AM 0.15 6.1 M 33.0 M flurries, mostly cloudy, 7F, ENE wind 0-1, RH 78%. aux snowstick = 54" (located in an open flat area at 9400 below Miramonte Ridge)
2/8/2012 6:00 AM T 0.1 M 31.0 M
2/9/2012 7:00 AM 0.01 0.2 M 26.0 M flurries, m cloudy, 25F, RH 60%, press steady
2/10/2012 7:00 AM T 0.1 M 21.0 M mostly cloudy, flurries
2/11/2012 7:00 AM 0.06 1.1 M 21.0 M
2/12/2012 7:00 AM T T M 19.0 M
2/13/2012 6:00 AM 0.01 0.2 M 18.5 M flurries, mostly cloudy
2/14/2012 6:00 AM T T M 18.5 M
2/15/2012 6:30 AM 0.00 0.0 M 18.0 M Frost and fog, 17F
2/16/2012 7:00 AM 0.00 0.0 M 18.0 M
2/17/2012 7:00 AM 0.00 0.0 M 17.5 M
2/18/2012 7:00 AM 0.01 0.3 M 18.0 M
2/19/2012 7:00 AM 0.00 0.0 M 18.0 M
2/20/2012 7:30 AM T 0.1 M 18.0 M flurries, mostly cloudy, 15F.
2/21/2012 6:00 AM T T M 17.5 M mostly cloudy, flurries and blowing snow. W wind 20 mph G 30.
2/22/2012 6:00 AM T T M 17.5 M flurries, p. cloudy, 28F, SW wind 20-30 G40
2/23/2012 6:00 AM 0.60 6.2 M 23.0 M
2/24/2012 6:00 AM 0.24 3.0 M 24.0 M Storm total 9.2" , 0.84" SWE 10F, p. cloudy, flurries W wind 5-10.
2/25/2012 7:00 AM T T M 24.0 M sunny clear, 40F, NW wind 10-15 G20, pressure dropping RH 28%
2/26/2012 7:00 AM 0.00 0.0 M 22.0 M
2/27/2012 6:00 AM 0.00 0.0 M 21.5 M
2/28/2012 6:00 AM 0.00 0.0 M 20.0 M
2/29/2012 6:30 AM 0.10 1.3 M 21.5 M sunny, 15F, W wind 10-20 G35
3/1/2012 6:30 AM 0.01 0.2 M 20.0 M
3/2/2012 6:30 AM 0.03 0.5 M 19.5 M 8F, mostly clear, calm.
3/3/2012 7:00 AM T T M 19.5 M
3/4/2012 7:00 AM T T M 19.0 M
3/5/2012 6:00 AM 0.00 0.0 M 18.0 M
3/6/2012 6:00 AM 0.00 0.0 M 17.0 M
3/7/2012 6:30 AM T T M 16.0 M Fog, freezing drizzle, few flakes, 20F. Dangerous black ice on roadways above 7000' in NW JeffCo.
3/8/2012 6:00 AM T 0.1 M 16.0 M
3/9/2012 6:00 AM 0.00 0.0 M 15.5 M depth of snow at auxiliary snow stake (flat area at 9400') 31.5"
3/10/2012 8:00 AM 0.00 0.0 M 15.0 M
3/11/2012 8:00 AM T T M 15.0 M snow, 32F, SE wind 1-3, RH 62%. auxiliary snow stake=30.5" Snowpack, even on north faces, is isothermal. 15.0" snowpack on south faces contains 3.86" SWE.
3/12/2012 6:00 AM 0.01 0.3 M 15.0 3.86
3/13/2012 6:00 AM 0.00 0.0 M 14.5 M
3/14/2012 6:00 AM 0.00 0.0 M 13.5 M
3/15/2012 6:00 AM 0.00 0.0 M 13.0 M
3/16/2012 6:00 AM 0.00 0.0 M 13.0 M
3/17/2012 6:00 AM 0.00 0.0 M 11.5 M
3/18/2012 8:00 AM 0.00 0.0 M 10.5 M
3/19/2012 6:00 AM T T M 9.0 M
3/20/2012 6:00 AM T T M 9.0 M
3/21/2012 6:00 AM 0.00 0.0 M 8.5 M
3/22/2012 6:00 AM 0.00 0.0 M 8.0 M
3/23/2012 6:00 AM 0.00 0.0 M 7.0 M
3/24/2012 6:00 AM 0.00 0.0 M 5.0 M
3/25/2012 6:00 AM 0.00 0.0 M 3.0 M
3/26/2012 6:00 AM 0.00 0.0 M T M auxiliary snowstick at 9400' on flat aspect reads 19". Flat and north aspects retaining 90% coverage. Traces only on south and west aspects.
3/27/2012 6:00 AM 0.00 0.0 M T M
3/28/2012 6:00 AM 0.00 0.0 M T M
3/29/2012 6:00 AM 0.00 0.0 M T M
3/30/2012 6:00 AM 0.00 0.0 M T M
3/31/2012 6:00 AM 0.00 0.0 M T M
4/1/2012 6:00 AM 0.00 0.0 M T M
4/2/2012 6:00 AM T T M T M 35F, light pellet snow. snowline at 8900'.
4/3/2012 6:40 AM 0.52 3.5 M 3.5 M looks like a 1/8" crust of freezing rain came in during the night, coated the inch of snow that had already fallen, and then changed back to snow again.
4/4/2012 6:30 AM 0.31 3.2 M 6.5 M
4/5/2012 6:00 AM 0.00 0.0 M 3.0 M
4/6/2012 6:00 AM 0.00 0.0 M T M
4/7/2012 6:00 AM 0.00 0.0 M T M
4/8/2012 6:00 AM 0.00 0.0 M T M
4/9/2012 6:00 AM 0.00 0.0 M T M
4/10/2012 6:00 AM 0.00 0.0 M T M
4/11/2012 6:00 AM 0.00 0.0 M T M
4/12/2012 6:00 AM 0.12 T M T M mostly rain, but looks like a few flakes fell toward the storm's end. First thunderstorm of the season.
4/13/2012 6:00 AM T 0.0 M T M
4/14/2012 6:00 AM 0.00 0.0 M T M
4/15/2012 7:30 AM 0.62 7.5 M 7.5 M
4/16/2012 7:00 AM 0.03 0.5 M 3.0 M
4/17/2012 6:00 AM T 0.0 M 2.0 M
4/18/2012 6:00 AM 0.00 0.0 M T M
4/19/2012 6:00 AM T T M T M
4/20/2012 7:00 AM 0.01 0.1 M T M mostly clear, light flurries blowing in from west, 34F,
4/21/2012 6:00 AM T 0.0 M T M
4/22/2012 6:00 AM 0.00 0.0 M T M
4/23/2012 6:00 AM 0.00 0.0 M T M
4/24/2012 6:00 AM 0.00 0.0 M T M
4/25/2012 6:00 AM 0.00 0.0 M T M
4/26/2012 6:00 AM T 0.0 M T M
4/27/2012 7:00 AM 0.10 0.0 M 0.0 M mostly rain. Few flakes in the air this morning.
4/28/2012 7:00 AM T T M T M
4/29/2012 6:00 AM 0.00 0.0 M 0.0 M
4/30/2012 6:00 AM 0.00 0.0 M 0.0 M
5/1/2012 6:00 AM 0.00 0.0 M 0.0 M
5/2/2012 6:00 AM 0.00 0.0 M 0.0 M
5/3/2012 6:00 AM 0.00 0.0 M 0.0 M
5/4/2012 6:00 AM 0.00 0.0 M 0.0 M
5/5/2012 6:00 AM 0.00 0.0 M 0.0 M
5/6/2012 6:00 AM T 0.0 M 0.0 M passing showers with some lightning to the south.
5/7/2012 6:00 AM 0.39 5.5 M 5.5 M 28F, fog, light snow.
5/8/2012 6:00 AM 0.05 1.1 M 5.0 M 28F, clear and calm.
5/9/2012 6:00 AM 0.00 0.0 M T M
5/10/2012 6:00 AM 0.00 0.0 M T M
5/11/2012 7:00 AM T 0.0 M 0.0 M freezing rain began at 7:45
5/12/2012 8:00 AM 0.11 2.1 M 2.0 M
5/13/2012 8:00 AM 0.09 0.3 M T M broken fog, 38F. Some precip fell as rain first, before changing over to snow around 7pm.
5/14/2012 6:00 AM T T M 0.0 M frost, sunny, 26F, calm
5/15/2012 6:00 AM 0.00 0.0 M 0.0 M
5/16/2012 6:00 AM 0.00 0.0 M 0.0 M
5/17/2012 6:00 AM 0.00 0.0 M 0.0 M
5/18/2012 6:00 AM T 0.0 M 0.0 M
5/19/2012 8:00 AM T 0.0 M 0.0 M
5/20/2012 8:00 AM M 0.6 M 0.0 M gauge cracked during freeze last night. Likely lost some water.
5/21/2012 6:00 AM 0.05 0.0 M 0.0 M
5/22/2012 6:00 AM 0.00 0.0 M M M
5/23/2012 6:00 AM 0.00 0.0 M M M
5/24/2012 6:00 AM 0.51 0.5 M 0.5 M 0.47" of rain, 0.04" of snow sleet and hail. Snow squalls continue to blow in from the west early this morning. 31F.
5/25/2012 6:00 AM T 0.0 M 0.0 M
5/26/2012 6:00 AM 0.00 0.0 M M M
5/27/2012 6:00 AM 0.00 0.0 M M M
5/28/2012 6:00 AM 0.00 0.0 M M M
5/29/2012 6:00 AM 0.00 0.0 M M M
5/30/2012 6:00 AM 0.00 0.0 M M M
5/31/2012 6:00 AM 0.00 0.0 M M M
6/1/2012 6:00 AM 0.00 0.0 M 0.0 M
6/2/2012 8:00 AM 0.00 0.0 M 0.0 M
6/3/2012 7:00 AM 0.14 0.0 M 0.0 M
6/4/2012 6:00 AM 0.01 0.0 M 0.0 M
6/5/2012 6:00 AM 0.00 0.0 M M M
6/6/2012 6:00 AM 0.00 0.0 M M M
6/7/2012 6:00 AM 0.18 0.0 M 0.0 M
6/8/2012 6:00 AM T 0.0 M 0.0 M
6/9/2012 7:00 AM 0.00 0.0 M 0.0 M
6/10/2012 7:00 AM 0.00 0.0 M 0.0 M
6/11/2012 6:00 AM 0.00 0.0 M 0.0 M
6/12/2012 6:00 AM 0.00 0.0 M 0.0 M
6/13/2012 7:00 AM 0.00 0.0 M 0.0 M
6/14/2012 7:00 AM 0.00 0.0 M 0.0 M
6/15/2012 7:00 AM T 0.0 M 0.0 M
6/16/2012 7:00 AM 0.05 0.0 M 0.0 M
6/17/2012 8:00 AM 0.06 0.0 M 0.0 M
6/18/2012 6:00 AM 0.00 0.0 M 0.0 M
6/19/2012 6:00 AM 0.00 0.0 M M M
6/20/2012 6:00 AM 0.00 0.0 M 0.0 M low clouds and broken fog, 45F, 67% RH. mist and drizzle below 7500' in coal creek canyon.
6/21/2012 6:00 AM 0.00 0.0 M 0.0 M
6/22/2012 6:00 AM 0.00 0.0 M M M
6/23/2012 6:00 AM 0.00 0.0 M M M
6/24/2012 6:00 AM 0.00 0.0 M 0.0 M new high temp recorded yesterday. previous high 85. new 87.
6/25/2012 6:00 AM T 0.0 M 0.0 M
6/26/2012 6:00 AM 0.00 0.0 M 0.0 M new high temp recorded yesterday: 88F. 4th consecutive day of temps in the 80s, also a record for consecutive days in the 80s. Assuming another day in the 80s, then today should also tie the record for number of days in the 80s all season, which is 5.
6/27/2012 6:00 AM 0.04 0.0 M 0.0 M 61F, 40%RH, erratic winds north thru east, 5-15, G25
6/28/2012 6:00 AM 0.14 0.0 M 0.0 M
6/29/2012 6:00 AM 0.01 0.0 M 0.0 M
6/30/2012 7:00 AM T 0.0 M 0.0 M
7/1/2012 8:00 AM T 0.0 M 0.0 M
7/2/2012 6:00 AM T 0.0 M 0.0 M
7/3/2012 6:00 AM 0.08 0.0 M 0.0 M
7/4/2012 6:00 AM 0.05 0.0 M 0.0 M
7/5/2012 6:00 AM 0.00 0.0 M 0.0 M
7/6/2012 6:00 AM 0.03 0.0 M 0.0 M
7/7/2012 8:00 AM 0.80 0.0 M 0.0 M
7/8/2012 8:00 AM 0.26 0.0 M 0.0 M
7/9/2012 7:00 AM 0.36 0.0 M 0.0 M
7/10/2012 6:00 AM T 0.0 M 0.0 M
7/11/2012 6:00 AM 0.00 0.0 M 0.0 M
7/12/2012 6:00 AM T 0.0 M 0.0 M
7/13/2012 6:00 AM 0.04 0.0 M 0.0 M
7/14/2012 6:00 AM 0.00 0.0 M 0.0 M
7/15/2012 6:00 AM 0.00 0.0 M 0.0 M
7/16/2012 6:00 AM 0.04 0.0 M 0.0 M
7/17/2012 6:00 AM 0.23 0.0 M 0.0 M
7/18/2012 6:00 AM 0.15 0.0 M 0.0 M
7/19/2012 6:00 AM 0.01 0.0 M 0.0 M
7/20/2012 6:00 AM 0.00 0.0 M 0.0 M
7/21/2012 7:00 AM 0.00 0.0 M 0.0 M
7/22/2012 7:00 AM 0.02 0.0 M 0.0 M
7/23/2012 6:00 AM 0.01 0.0 M 0.0 M
7/24/2012 6:00 AM 0.49 0.0 M 0.0 M
7/25/2012 7:00 AM 0.14 0.0 M 0.0 M
7/26/2012 6:00 AM 0.01 0.0 M 0.0 M
7/27/2012 6:00 AM 0.00 0.0 M 0.0 M
7/28/2012 7:00 AM 0.28 M M M M
7/29/2012 8:00 AM 0.02 0.0 M 0.0 M
7/30/2012 6:00 AM 0.28 0.0 M 0.0 M
7/31/2012 6:00 AM 0.83 0.0 M 0.0 M
8/1/2012 6:00 AM 0.01 0.0 M 0.0 M
8/2/2012 6:00 AM 0.30 0.0 M 0.0 M
8/3/2012 6:00 AM 0.41 0.0 M 0.0 M
8/4/2012 6:00 AM 0.00 0.0 M 0.0 M
8/5/2012 6:00 AM 0.00 0.0 M 0.0 M
8/6/2012 6:00 AM 0.00 0.0 M 0.0 M
8/7/2012 6:00 AM 0.00 0.0 M 0.0 M
8/8/2012 6:00 AM T 0.0 M 0.0 M
8/9/2012 7:00 AM 0.00 0.0 M 0.0 M
8/10/2012 6:00 AM T 0.0 M 0.0 M
8/11/2012 6:00 AM T 0.0 M 0.0 M
8/12/2012 6:00 AM 0.00 0.0 M 0.0 M
8/13/2012 6:00 AM 0.00 0.0 M 0.0 M
8/14/2012 6:00 AM T 0.0 M 0.0 M
8/15/2012 6:00 AM 0.00 0.0 M 0.0 M
8/16/2012 6:00 AM 0.00 0.0 M 0.0 M
8/17/2012 6:00 AM 0.00 0.0 M M M
8/18/2012 6:00 AM 0.00 0.0 M M M
8/19/2012 6:00 AM 0.00 0.0 M M M
8/20/2012 6:00 AM 0.00 0.0 M 0.0 M
8/21/2012 6:00 AM 0.05 0.0 M 0.0 M
8/22/2012 6:00 AM 0.00 0.0 M 0.0 M
8/23/2012 6:00 AM 0.10 0.0 M 0.0 M
8/24/2012 6:00 AM 0.01 0.0 M 0.0 M
8/25/2012 6:00 AM T 0.0 M 0.0 M
8/26/2012 6:00 AM 0.00 0.0 M M M
8/27/2012 6:00 AM 0.00 0.0 M M M
8/28/2012 6:00 AM 0.00 0.0 M M M
8/29/2012 6:00 AM 0.00 0.0 M M M
8/30/2012 6:00 AM 0.00 0.0 M M M
8/31/2012 6:00 AM 0.00 0.0 M M M
9/1/2012 6:00 AM 0.00 0.0 M 0.0 M
9/2/2012 6:00 AM 0.30 0.0 M 0.0 M
9/3/2012 6:00 AM T 0.0 M 0.0 M
9/4/2012 6:00 AM 0.00 0.0 M 0.0 M
9/5/2012 6:00 AM 0.00 0.0 M 0.0 M
9/6/2012 6:00 AM 0.00 0.0 M 0.0 M
9/7/2012 6:00 AM 0.08 0.0 M 0.0 M Snow on Mt. Evans
9/8/2012 8:00 AM 0.01 0.0 M 0.0 M
9/9/2012 6:00 AM 0.00 0.0 M 0.0 M
9/10/2012 6:00 AM 0.00 0.0 M 0.0 M
9/11/2012 6:00 AM 0.00 0.0 M 0.0 M
9/12/2012 6:16 AM 0.53 0.0 M 0.0 M light rain, 46F
9/13/2012 6:20 AM 0.37 0.0 M 0.0 M 36F, clear, some ice on elevated surfaces.
9/14/2012 7:00 AM 0.00 0.0 M 0.0 M
9/15/2012 6:00 AM 0.00 0.0 M 0.0 M
9/16/2012 6:00 AM 0.00 0.0 M 0.0 M
9/17/2012 6:00 AM 0.00 0.0 M 0.0 M
9/18/2012 6:00 AM 0.04 0.0 M 0.0 M
9/19/2012 6:00 AM 0.00 0.0 M 0.0 M
9/20/2012 6:00 AM 0.00 0.0 M 0.0 M
9/21/2012 6:00 AM 0.00 0.0 M 0.0 M
9/22/2012 6:00 AM 0.00 0.0 M 0.0 M
9/23/2012 6:00 AM 0.00 0.0 M 0.0 M
9/24/2012 6:00 AM 0.00 0.0 M 0.0 M
9/25/2012 6:00 AM 0.00 0.0 M 0.0 M
9/26/2012 6:00 AM 0.38 0.0 M 0.0 M overcast, scattered low clouds, 40F
9/27/2012 6:00 AM 0.14 0.0 M 0.0 M mostly cloudy, 35F
9/28/2012 6:00 AM 0.05 0.0 M 0.0 M
9/29/2012 6:00 AM T 0.0 M 0.0 M
9/30/2012 6:00 AM T 0.0 M 0.0 M



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
5/19/2012 9:18 AM Very little if any rain associated at all. Started actually as rimed snow flakes. As hail tapered off, it transitioned to light snow. Most stones had clear rims and white centers. 1/4" Pea Size Rice Rice Hard|Clear Ice|White Ice 16 1min no damage Continuous False Before rain After smaller hail .1 .2
5/23/2012 8:06 PM RAin Hail and Snow! Rain, light at first, then heavier as thunder approached from the west. A few slushy rice-sized pellets came first, lasting about 2 minutes, then more consistent white peas, then the occasional semisoft whopper rounded out the last 2 minutes, with a swift transition to clumpy white snow for the finale. Cloud to ground lightning nearby throughout. 0.35" of liquid precip fell before the hail, 0.04" fell during the hail and before the snow. Currently a snowy slushy mix of clear ice sleet, snow, and light rain, as the lightning winds down. 3/8" 1/4" Pea Size Rice Soft|White Ice 4 1min no damage Continuous False After rain After smaller hail 10-20
6/2/2012 1:59 PM hail was too soft to leave obvious indentations on pad. 0.07" of rain fell with this hail storm. 1/4" Pea Size Rice Rice Soft|White Ice 10 2min no damage Intermittent True Same time as rain After smaller hail 50-60 0 0.1
6/26/2012 7:03 PM 0.04" of rain fell with the hail, mostly after the initial hail event. 1/4" Pea Size 1/4" Pea Size Rice Hard|White Ice 3 1min no damage Continuous True Before rain After smaller hail 30-40 0.3