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 09 1.66 2.84 28 2.84 28 0.00 0 0 7 3 51.1 10 15
Nov 09 1.44 0.83 30 0.83 30 0.00 0 0 3 3 13.6 3 15
Dec 09 1.33 1.15 30 0.73 27 0.42 3 1 8 5 11.0 9 16
Jan 10 0.95 0.37 31 0.37 31 0.00 0 0 3 7 7.1 5 12
Feb 10 1.07 1.13 28 1.13 28 0.00 0 0 10 8 20.6 12 19
March 10 2.93 4.00 31 4.00 30 0.00 1 0 11 4 61.4 11 11
April 10 3.55 4.39 29 4.39 26 0.00 3 1 10 4 42.5 9 14
May 10 2.91 2.16 31 1.89 27 0.27 4 1 7 9 16.1 6 13
June 10 2.45 3.30 30 3.30 30 0.00 0 0 9 5 0.0 0 0
July 10 2.83 1.85 31 1.85 31 0.00 0 0 13 5 0.0 0 0
Aug 10 3.00 1.34 31 1.34 31 0.00 0 0 10 6 0.0 0 0
Sept 10 1.79 0.49 30 0.49 30 0.00 0 0 2 2 0.0 0 0
Water Year Totals: 25.91" 23.85" 360 days 23.16" 349 0.69" 11 days 3 93 days 61 days 223.4" 65 days 115 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
10/1/2009 0.00
10/2/2009 0.00
10/3/2009 0.00
10/4/2009 0.00
10/5/2009 0.00
10/6/2009 M
10/7/2009 M
10/8/2009 0.00
10/9/2009 0.00
10/10/2009 M
10/11/2009 0.00
10/12/2009 0.00
10/13/2009 0.00
10/14/2009 0.00
10/15/2009 T
10/16/2009 0.00
10/17/2009 0.00
10/18/2009 0.00
10/19/2009 0.00
10/20/2009 0.00
10/21/2009 0.19
10/22/2009 0.09
10/23/2009 T
10/24/2009 0.00
10/25/2009 0.10
10/26/2009 0.24
10/27/2009 0.00
10/28/2009 1.07
10/29/2009 0.98
10/30/2009 0.17
10/31/2009 T
11/1/2009 0.00
11/2/2009 0.00
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.00
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.00
11/12/2009 0.00
11/13/2009 T
11/14/2009 0.10
11/15/2009 0.63
11/16/2009 0.10
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 0.00
11/20/2009 0.00
11/21/2009 0.00
11/22/2009 0.00
11/23/2009 0.00
11/24/2009 T
11/25/2009 0.00
11/26/2009 0.00
11/27/2009 0.00
11/28/2009 0.00
11/29/2009 T
11/30/2009 0.00
12/1/2009 0.00
12/2/2009 0.10
12/3/2009 0.12
12/4/2009 T
12/5/2009 0.00
12/6/2009 0.13
12/7/2009 0.01
12/8/2009 0.03
12/9/2009 0.05
12/10/2009 0.00
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 T
12/14/2009 0.10
12/15/2009 T
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 T
12/19/2009 0.00
12/20/2009 0.00
12/21/2009 0.00
12/22/2009 0.00
12/23/2009 0.19
12/24/2009 **
12/25/2009 **
12/26/2009 0.42
12/27/2009
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 T
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.00
1/2/2010 T
1/3/2010 T
1/4/2010 T
1/5/2010 0.00
1/6/2010 0.01
1/7/2010 0.29
1/8/2010 0.00
1/9/2010 0.00
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 0.00
1/13/2010 0.00
1/14/2010 0.00
1/15/2010 0.00
1/16/2010 0.00
1/17/2010 0.00
1/18/2010 T
1/19/2010 0.00
1/20/2010 0.00
1/21/2010 0.00
1/22/2010 0.00
1/23/2010 0.00
1/24/2010 T
1/25/2010 T
1/26/2010 0.00
1/27/2010 0.00
1/28/2010 0.07
1/29/2010 T
1/30/2010 0.00
1/31/2010 0.00
2/1/2010 T
2/2/2010 T
2/3/2010 0.00
2/4/2010 0.03
2/5/2010 T
2/6/2010 0.00
2/7/2010 0.01
2/8/2010 0.12
2/9/2010 0.04
2/10/2010 0.00
2/11/2010 0.00
2/12/2010 T
2/13/2010 T
2/14/2010 0.06
2/15/2010 T
2/16/2010 0.00
2/17/2010 0.00
2/18/2010 T
2/19/2010 0.24
2/20/2010 0.07
2/21/2010 0.07
2/22/2010 0.09
2/23/2010 T
2/24/2010 0.00
2/25/2010 0.00
2/26/2010 0.40
2/27/2010 0.00
2/28/2010 0.00
3/1/2010 0.10
3/2/2010 T
3/3/2010 0.00
3/4/2010 0.00
3/5/2010 T
3/6/2010 0.00
3/7/2010 0.00
3/8/2010 T
3/9/2010 0.10
3/10/2010 0.29
3/11/2010 0.15
3/12/2010 0.00
3/13/2010 0.00
3/14/2010 0.00
3/15/2010 0.44
3/16/2010 0.00
3/17/2010 0.00
3/18/2010 0.00
3/19/2010 0.28
3/20/2010 0.55
3/21/2010 0.00
3/22/2010 0.00
3/23/2010 T
3/24/2010 1.60
3/25/2010 0.01
3/26/2010 0.00
3/27/2010 0.47
3/28/2010 0.01
3/29/2010 0.00
3/30/2010 0.00
3/31/2010 **
Day of YearDaily PrcpMultiday Prcp
4/1/2010 **
4/2/2010 **
4/3/2010 0.00
4/4/2010
4/5/2010 0.00
4/6/2010 0.06
4/7/2010 0.34
4/8/2010 0.05
4/9/2010 0.00
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 T
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 T
4/19/2010 0.00
4/20/2010 T
4/21/2010 0.00
4/22/2010 0.77
4/23/2010 0.62
4/24/2010 1.71
4/25/2010 0.09
4/26/2010 0.47
4/27/2010 T
4/28/2010 0.00
4/29/2010 0.20
4/30/2010 0.08
5/1/2010 T
5/2/2010 T
5/3/2010 0.34
5/4/2010 0.00
5/5/2010 T
5/6/2010 T
5/7/2010 0.13
5/8/2010 T
5/9/2010 0.00
5/10/2010 0.00
5/11/2010 T
5/12/2010 0.64
5/13/2010 0.13
5/14/2010 0.20
5/15/2010 0.35
5/16/2010 T
5/17/2010 0.00
5/18/2010 0.00
5/19/2010 0.10
5/20/2010 0.00
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 T
5/26/2010 T
5/27/2010 **
5/28/2010 **
5/29/2010 **
5/30/2010 0.27
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.00
6/3/2010 0.02
6/4/2010 0.00
6/5/2010 0.00
6/6/2010 T
6/7/2010 0.00
6/8/2010 0.01
6/9/2010 T
6/10/2010 T
6/11/2010 0.10
6/12/2010 1.74
6/13/2010 0.56
6/14/2010 0.43
6/15/2010 0.05
6/16/2010 0.00
6/17/2010 0.00
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 T
6/22/2010 T
6/23/2010 0.00
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.37
6/28/2010 0.02
6/29/2010 0.00
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.07
7/3/2010 0.52
7/4/2010 T
7/5/2010 0.18
7/6/2010 0.00
7/7/2010 0.11
7/8/2010 0.18
7/9/2010 0.04
7/10/2010 0.00
7/11/2010 0.08
7/12/2010 T
7/13/2010 0.00
7/14/2010 T
7/15/2010 0.04
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.20
7/20/2010 0.00
7/21/2010 0.10
7/22/2010 T
7/23/2010 0.00
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.00
7/27/2010 0.00
7/28/2010 0.02
7/29/2010 0.02
7/30/2010 0.29
7/31/2010 T
8/1/2010 0.00
8/2/2010 0.30
8/3/2010 0.28
8/4/2010 0.08
8/5/2010 T
8/6/2010 0.01
8/7/2010 0.10
8/8/2010 0.07
8/9/2010 T
8/10/2010 0.16
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 0.00
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 T
8/17/2010 0.02
8/18/2010 0.00
8/19/2010 0.00
8/20/2010 T
8/21/2010 0.00
8/22/2010 0.00
8/23/2010 0.00
8/24/2010 0.29
8/25/2010 T
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 T
8/30/2010 0.00
8/31/2010 0.03
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.40
9/10/2010 0.00
9/11/2010 0.00
9/12/2010 0.00
9/13/2010 0.00
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 0.00
9/17/2010 0.00
9/18/2010 0.00
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 T
9/22/2010 T
9/23/2010 0.09
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 0.00
9/28/2010 0.00
9/29/2010 0.00
9/30/2010 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 7:00 AM 0.00 0.0 M 0.0 M
10/2/2009 7:00 AM 0.00 0.0 M 0.0 M
10/3/2009 7:00 AM 0.00 0.0 M 0.0 M
10/4/2009 7:00 AM 0.00 0.0 M 0.0 M
10/5/2009 7:00 AM 0.00 0.0 M 0.0 M
10/6/2009 7:00 AM M 1.1 M 1.0 M
10/7/2009 7:00 AM M 0.5 M 1.0 M
10/8/2009 7:00 AM 0.00 0.0 M 1.0 M
10/9/2009 7:00 AM 0.00 0.0 M 0.5 M
10/10/2009 7:00 AM M 0.2 M 0.5 M
10/11/2009 7:00 AM 0.00 0.0 M 0.0 M
10/12/2009 6:00 AM 0.00 0.0 M 0.0 M
10/13/2009 6:00 AM 0.00 0.0 M 0.0 M
10/14/2009 6:00 AM 0.00 0.0 M 0.0 M
10/15/2009 8:00 AM T T M 0.0 M Mixed rain and snowshowers blowing in from the divide from about 11am to 2pm may have dropped more than a trace (certainly less than a twentienth), but high winds, warm temps and bright sun conspired to evaporate any moisture before it could be collected. Another trace of freezing rain (1mm thick) observed this morning, not sure when that happened (late last night or after 6 am this morning.
10/16/2009 7:00 AM 0.00 0.0 M 0.0 M
10/17/2009 7:00 AM 0.00 0.0 M 0.0 M
10/18/2009 7:00 AM 0.00 0.0 M 0.0 M
10/19/2009 7:00 AM 0.00 0.0 M 0.0 M
10/20/2009 7:00 AM 0.00 0.0 M 0.0 M
10/21/2009 7:10 AM 0.19 1.6 0.17 1.6 0.17 Freezing mist/drizzle began at 6:30pm, at times mixed with flurries, changed to all snow sometime after 11pm. Light snow continues at 7:30 am.
10/22/2009 7:00 AM 0.09 0.8 0.09 2.0 0.25
10/23/2009 8:05 AM T T T 0.5 M Just a skiff of new snow. Flurries to light snow snow showers at observation time. Snow cover is 30% or less.
10/24/2009 7:00 AM 0.00 0.0 M 0.0 M snow cover less than 5%.
10/25/2009 8:35 AM 0.10 0.8 0.10 1.0 0.10 Traces only during the day yesterday as high winds blew snowshowers from the divide. Accumulating snow began at 5:30pm. heaviest at 6:30-7pm, and again after 11:30 pm. flurries and light snow out of thin cloud cover at obs time.
10/26/2009 6:15 AM 0.24 3.7 0.24 4.0 0.32 Most snow fell between 4pm and 8pm. Total snow depth at 9pm was 4.2 inches, some settling overnight.
10/27/2009 8:00 AM 0.00 0.0 M 1.5 M snow coverage approx 80-90%.
10/28/2009 6:55 AM 1.07 13.6 1.11 13.5 1.11 heavy snow continues. see intense precip reports for ~1hr incremental snow totals from 7:35 to midnight last night.
10/29/2009 7:20 AM 0.98 26.6 1.07 32.0 1.90 Light ot moderate snow continues. Temp 11. Total snow depth melted from core (1.90) is getting very tricky capture. Cumulative incremental core melt is 1.84, cumulative storm total guage catch is 2.05. New snowfall melted from core (1.05) is 24hr cumulative. see intense precip reports for incremental snow totals.
10/30/2009 6:00 AM 0.17 2.2 0.17 31.0 2.34 snow stopped at 7:30pm. wind picked up shortly after. Strong blowing and drifting snow all night, to ground blizzard and near zero visibility across Rocky Flats and Hwy 93 at 6:30 this morning. Total snow depth on the ground was at 7:30pm, before wind started drifting.
10/31/2009 7:30 AM T T T 26.0 2.78 High winds and considerable drifting snow thursday night to saturday morning. Total snow depth melted from core includes some drifted snow.
11/1/2009 8:00 AM 0.00 0.0 0.00 15.0 1.98
11/2/2009 6:00 AM 0.00 0.0 0.00 10.0 M
11/3/2009 6:00 AM 0.00 0.0 M 9.0 M
11/4/2009 6:00 AM 0.00 0.0 M 6.5 M
11/5/2009 6:00 AM 0.00 0.0 M 5.5 M
11/6/2009 6:00 AM 0.00 0.0 M 2.0 M snow coverage approx 60%
11/7/2009 6:00 AM 0.00 0.0 M 1.0 M snowcoverage approx. 50%
11/8/2009 7:00 AM 0.00 0.0 M 1.0 M snow coverage approx 40%
11/9/2009 6:00 AM 0.00 0.0 M 1.0 M snow coverage approx. 30%
11/10/2009 7:00 AM 0.00 0.0 M T M
11/11/2009 7:00 AM 0.00 0.0 M T M
11/12/2009 6:00 AM 0.00 0.0 M T M some damp spots on pavement, likely dew/frost.
11/13/2009 6:55 AM T T M T M Fog and drizzle/mist falling. a moderate frost, thin coating of frzng rain and just a few white flakes in gauge at report time
11/14/2009 8:00 AM 0.10 1.2 0.09 1.0 0.09 A fair bit of frost on guage as well, about 0.01. overcast, 23F.
11/15/2009 7:15 AM 0.63 9.5 0.63 10.0 0.78 Moderate snow continues. 15F and falling. New snow is cumulative incremental in 24hrs, about a half inch less on the ground due to compaction. gauge catch was lighter than core this morning. Possible light breeze overnight. Incremental cores (0.79) and total core (0.78) jive very well.
11/16/2009 6:10 AM 0.10 2.9 0.09 11.0 0.88
11/17/2009 7:00 AM 0.00 0.0 0.00 5.5 M
11/18/2009 7:00 AM 0.00 0.0 0.00 3.5 M
11/19/2009 6:00 AM 0.00 0.0 0.00 2.0 M snow coverage about 80% on south faces.
11/20/2009 7:00 AM 0.00 0.0 M M M
11/21/2009 7:00 AM 0.00 0.0 M M M
11/22/2009 7:00 AM 0.00 0.0 M M M
11/23/2009 6:00 AM 0.00 0.0 0.00 T M Snow coverage on south faces ~20%
11/24/2009 7:00 AM T T M T M From my office downtown, it looked like a passing flurry swept over my hill around mid-afternoon monday. nothing to record in the guage or on the ground when i got home.
11/25/2009 7:00 AM 0.00 0.0 0.00 T M North faces still have a continuous 4-6" snowpack. South Faces holding steady with patchy 20-40% coverage.
11/26/2009 7:00 AM 0.00 0.0 M T M
11/27/2009 7:00 AM 0.00 0.0 M T M
11/28/2009 7:00 AM 0.00 0.0 M T M
11/29/2009 7:00 AM T T T T M very light flurries. cloud deck at ~9400 and rising. 22F
11/30/2009 6:00 AM 0.00 0.0 0.00 T M snow coverage still steady at 20% on south faces, 100% on north faces with up to 8".
12/1/2009 7:00 AM 0.00 0.0 M M M
12/2/2009 6:20 AM 0.10 2.8 0.11 3.0 M moderate snow at measurement time. 3F. snow began as very light flurries around 8pm.
12/3/2009 8:00 AM 0.12 0.7 M 3.5 0.26 Sunny, light sporadic breez. 6F. hit -9F last night.
12/4/2009 6:00 AM T 0.1 M 1.0 M
12/5/2009 7:00 AM 0.00 0.0 M M M
12/6/2009 7:40 AM 0.13 2.2 M 3.5 M light snow, weak sun through thin clouds. 0F.
12/7/2009 6:10 AM 0.01 0.1 M 3.5 M thin high clouds, calm, -5F.
12/8/2009 6:30 AM 0.03 0.3 M 4.0 M calm, flurries from very thin clouds, -6F.
12/9/2009 6:30 AM 0.05 0.8 M 5.0 M breezy, clear, -5F. Some windblown snow may have drifted into the guage. new snow and total snow depths are more or less representative of my south facing slopes.
12/10/2009 7:00 AM 0.00 0.0 M M M
12/11/2009 7:00 AM 0.00 0.0 M M M
12/12/2009 7:00 AM 0.00 0.0 M M M
12/13/2009 8:00 AM T T M 5.0 M Mostly cloudy, stratus. 30F
12/14/2009 6:45 AM 0.10 1.1 M 6.0 M partly cloudy, few flakes in the air. 26F.
12/15/2009 7:00 AM T T M 6.0 M
12/16/2009 7:00 AM 0.00 0.0 M M M
12/17/2009 7:00 AM 0.00 0.0 M M M
12/18/2009 6:30 AM T T M 5.0 M
12/19/2009 7:00 AM 0.00 0.0 M M M
12/20/2009 7:00 AM 0.00 0.0 M M M
12/21/2009 8:00 AM 0.00 0.0 M 3.0 M
12/22/2009 7:00 AM 0.00 0.0 M 3.0 M
12/23/2009 7:50 AM 0.19 2.9 M 6.0 M moderate snow. 19F steady
12/28/2009 6:00 AM 0.00 0.0 M 10.0 M
12/29/2009 7:00 AM 0.00 0.0 M M M
12/30/2009 7:00 AM 0.00 0.0 M M M
12/31/2009 7:00 AM T T M 7.0 M Clear, 9F.
1/1/2010 8:00 AM 0.00 0.0 M 6.0 M Partly sunny. 29F. calm after very strong winds last night, light snow showers moving in from the west at 9 am.
1/2/2010 8:00 AM T T M 5.5 M partly-mostly cloudy. 25F. gusty winds bringing in moderate to heavy but short-lived snow showers from the divide.
1/3/2010 7:00 AM T T M 5.5 M mostly clear. 16F. calm.
1/4/2010 7:00 AM T 0.1 M 4.5 M
1/5/2010 7:00 AM 0.00 0.0 M M M
1/6/2010 7:15 AM 0.01 0.1 M 4.0 M moderate snowfall and blowing snow. 27F. gusty west wind.
1/7/2010 6:30 AM 0.29 6.1 0.33 10.5 1.18 Clear, Calm, 5F. total water content from core was a little tricky...the lower snowpack was difficult to penetrate, with 2 solid wind/suncrusts and a basal inpenetrable ice lens about an inch thick.
1/8/2010 7:00 AM 0.00 0.0 M 9.5 M Clear, breezy, 10F. observed a 22 degree temperature inversion at 10:30 last night between the middle of coal creek canyon (-15F) and my place near the top of Miramont Pk (7F). sublimation/compaction took about an inch off the top of the snowpack.
1/9/2010 7:00 AM 0.00 0.0 M M M
1/10/2010 7:00 AM 0.00 0.0 M M M
1/11/2010 7:00 AM 0.00 0.0 M M M
1/12/2010 7:00 AM 0.00 0.0 M M M
1/13/2010 7:00 AM 0.00 0.0 M M M
1/14/2010 7:00 AM 0.00 0.0 M M M
1/15/2010 7:00 AM 0.00 0.0 M M M
1/16/2010 7:00 AM 0.00 0.0 M M M
1/17/2010 7:00 AM 0.00 0.0 M M M
1/18/2010 6:00 AM T T M 4.0 M
1/19/2010 7:00 AM 0.00 0.0 M M M
1/20/2010 6:00 AM 0.00 0.0 M 4.0 M
1/21/2010 7:00 AM 0.00 0.0 M M M
1/22/2010 7:00 AM 0.00 0.0 M M M
1/23/2010 7:00 AM 0.00 0.0 M M M
1/24/2010 6:00 AM T T M M M
1/25/2010 6:00 AM T 0.1 M 4.0 M
1/26/2010 7:00 AM 0.00 0.0 M M M
1/27/2010 7:00 AM 0.00 0.0 M M M
1/28/2010 7:00 AM 0.07 0.7 M 4.5 M
1/29/2010 7:00 AM T T M 4.5 M clear, calm. bluebird. a skiff of new snow yesterday in two pulses, a few big fat flakes around 2:30pm, then dusting of fine stellars around 7:30pm
1/30/2010 7:00 AM 0.00 0.0 M M M
1/31/2010 7:00 AM 0.00 0.0 M M M
2/1/2010 6:00 AM T 0.0 M 4.0 M 57 mph wind gust at 3am took out my old anemometer.
2/2/2010 6:00 AM T T M 4.0 M light snow and flurries from roughly 4pm to 8pm.
2/3/2010 7:00 AM 0.00 0.0 M M M
2/4/2010 6:45 AM 0.03 0.3 M 4.5 M clear and well above the cloud deck. 21F. NW wind 5mph, Gusts to 15mph.
2/5/2010 7:00 AM T 0.0 M 4.0 M
2/6/2010 7:00 AM 0.00 0.0 M M M
2/7/2010 7:15 AM 0.01 0.1 M 4.0 M Light snow. calm wind. 22F. 74% RH. Press 21.03 inHG (abs) and rising.
2/8/2010 6:15 AM 0.12 3.2 M 7.0 M light to moderate snow, 13F.
2/9/2010 6:30 AM 0.04 1.9 M 9.0 M clear, calm, crisp. 2F.
2/10/2010 7:00 AM 0.00 0.0 M M M
2/11/2010 7:00 AM 0.00 0.0 M M M
2/12/2010 7:00 AM T T M 6.0 M flurries blowing off the divide around 5:30pm last night, and again around 6:30-7am this morning.
2/13/2010 7:00 AM T T M 5.0 M light snow, breezy N wind, 21F. dew 15.4F, RH 79%, Barometer 21.07 inHG abs and rising.
2/14/2010 8:45 AM 0.06 1.4 M 6.5 M light snow, cloudy, calm, 9F. At 10am: mostly cloudy, calm, flurries, 14F, dew 9.4F, RH 84%, barometer 21.24 inHG abs and rising.
2/15/2010 6:00 AM T T M M M
2/16/2010 6:00 AM 0.00 0.0 M M M
2/17/2010 6:00 AM 0.00 0.0 M 5.5 M
2/18/2010 6:00 AM T 0.1 M 5.5 M
2/19/2010 7:00 AM 0.24 3.6 M 9.0 M bright, clear, calm. cloud deck tops at ~7500'
2/20/2010 8:00 AM 0.07 0.3 M 9.0 M 17F, sun through fog, thin clouds with flurries, calm. barometer 20.96 inHG abs and falling, RH 81%, dew 12F
2/21/2010 8:30 AM 0.07 1.8 M 10.5 M 6F, overcast/fog, dew 4.4F, RH78%, barometer 20.98 insHG abs falling.
2/22/2010 6:10 AM 0.09 1.7 M 11.5 M Fog and thin clouds, flurries, 4F.
2/23/2010 6:30 AM T 0.1 M 11.5 M clear, few gusts, 4F.
2/24/2010 7:00 AM 0.00 0.0 M M M
2/25/2010 7:00 AM 0.00 0.0 M M M
2/26/2010 7:30 AM 0.40 6.1 M 15.0 M clear, breezy W wind 5-15mph, 16.8F
2/27/2010 7:00 AM 0.00 0.0 M M M
2/28/2010 7:30 AM 0.00 0.0 M 11.0 M overcast, light-moderate snow started at 7:35am. 25.1F, barometer 20.99 inHG abs falling, dew pt 19F, RH77%.
3/1/2010 6:00 AM 0.10 1.1 M 11.5 M overcast, patchy low clouds, 20F.
3/2/2010 7:00 AM T T M 11.0 M
3/3/2010 7:00 AM 0.00 0.0 M M M
3/4/2010 7:00 AM 0.00 0.0 M M M
3/5/2010 7:00 AM T 0.0 M M M
3/6/2010 7:00 AM 0.00 0.0 M M M
3/7/2010 7:00 AM 0.00 0.0 M M M
3/8/2010 6:00 AM T T M M M
3/9/2010 6:00 AM 0.10 0.9 M M M
3/10/2010 7:00 AM 0.29 3.7 M M M
3/11/2010 7:00 AM 0.15 1.7 M M M
3/12/2010 7:00 AM 0.00 0.0 M M M
3/13/2010 7:00 AM 0.00 0.0 M M M
3/14/2010 7:00 AM 0.00 0.0 M M M
3/15/2010 6:00 AM 0.44 4.7 M 10.0 M 16 degrees. interesting snow, very fine with sub-mm size crystals, mostly needles and plates, but all rimed. dense and cohesionless snow, wih very low angle of repose. 5 inches still couldn't stick to trees or even bridge the gaps between my deck's boards.
3/16/2010 7:00 AM 0.00 0.0 M M M
3/17/2010 7:00 AM 0.00 0.0 M M M
3/18/2010 7:00 AM 0.00 0.0 M M M
3/19/2010 8:00 AM 0.28 4.6 M M M moderate snow, 20F, pressure still dropping, east wind 5mph, gusts to 10.
3/20/2010 8:00 AM 0.55 16.9 0.57 34.0 4.46 Storm Totals: 21.5" new, Guage Catch 0.83", Incremental Core SWE 0.85"
3/21/2010 7:00 AM 0.00 0.0 M M M
3/22/2010 7:00 AM 0.00 0.0 M M M
3/23/2010 6:00 AM T T M M M a dusting this morning. 26F, mostly clear.
3/24/2010 8:00 AM 1.60 21.4 1.59 43.0 M 17F, light to moderate snow still falling. Access trench to snow study area still under construction, will have a total snowpack SWE at some point this morning.
3/25/2010 6:00 AM 0.01 0.4 M 41.0 M
3/26/2010 6:00 AM 0.00 0.0 M 41.0 7.88 55" on the ground at an auxilliary snowstick in a flat clearing half a mile NW of my station, elev 9320'.
3/27/2010 7:00 AM 0.47 5.9 M 44.0 M
3/28/2010 8:00 AM 0.01 0.1 M 40.5 M
3/29/2010 6:30 AM 0.00 0.0 M 38.0 M windy!
3/30/2010 7:00 AM 0.00 0.0 M 35.0 M
4/5/2010 6:00 AM 0.00 0.0 M 27.0 M
4/6/2010 7:00 AM 0.06 0.6 M 26.5 M gauge catch may have been a little heavy due to wind loading. partly cloudy, 21F, breezy west wind
4/7/2010 7:25 AM 0.34 6.2 M 31.5 M moderate snow, 17F, calm to light N wind
4/8/2010 6:00 AM 0.05 0.8 M 30.0 M estimate about 3/4"-1" of new snow fell before the sun got to it later in the day. gauge catch is likely accurate, with minimal evaporation.
4/9/2010 7:00 AM 0.00 0.0 M 28.0 M
4/10/2010 7:00 AM 0.00 0.0 M M M
4/11/2010 7:00 AM 0.00 0.0 M M M
4/12/2010 7:00 AM 0.00 0.0 M M M
4/13/2010 6:00 AM T M M M M
4/14/2010 7:00 AM 0.00 0.0 M M M
4/15/2010 7:00 AM 0.00 0.0 M M M
4/16/2010 7:00 AM 0.00 0.0 M M M
4/17/2010 7:00 AM 0.00 0.0 M M M
4/18/2010 6:00 AM T 0.0 M M M Mixed light rain and snow, snow melted on contact.
4/19/2010 6:00 AM 0.00 0.0 M 10.0 M snow coverage <30% on south faces. still >80% coverage on flat and northerly aspects and 23" deep.
4/20/2010 6:00 AM T 0.0 M M M just a few flakes and sprinkles around 6pm.
4/21/2010 6:00 AM 0.00 0.0 M M M
4/22/2010 7:10 AM 0.77 T M M M precip includes about 10 minutes of small 2-3mm hail around 4:30pm, and a trace of new snow that fell sometime overnight leaving a thin slushy coating on colder surfaces. currently overcast, 41F, calm wind, with very light mist.
4/23/2010 8:00 AM 0.62 5.1 M 5.0 M Gauge catch included 0.13" of ice representing the rain that fell before changing to snow. Minor flooding: S. Beaver Creek at Twin Spruce in Coal Creek Canyon is bank-full. New snow fell on up to 8" of patchy old snow (20% coverage) on south faces. Flat and northerly aspects still holding 21" of snow with 90% coverage NOT including the new snow.
4/24/2010 7:45 AM 1.71 19.8 1.73 22.4 2.35 Storm total so far 22.4" (includes 2.5" of settlement) SWE 2.33" Light snow, 25F, N wind 0-5mph G10, pressure rising
4/25/2010 8:00 AM 0.09 1.3 M 17.5 M gauge may be light due to afternoon evaporation. snowpack got nuked in the afternoon, lost 7.2". Max snow depth before melt 24.7".
4/26/2010 6:30 AM 0.47 4.6 M 18.0 M includes about .06" of precip that fell as snow but melted before it started accumulating.
4/27/2010 6:30 AM T T M 16.0 M
4/28/2010 7:00 AM 0.00 0.0 M 14.0 M Snow coverage above 8500': 31" on flat and north aspects, drifts and mounds to 50" common, and 100% coverage. Still 12"-18" and 90% coverage on south faces. South Beaver Ck and Coal Creek are near or at bank-full in several places. Low lying areas are saturated. sun and high temps today should cause dramatic melt.
4/29/2010 6:40 AM 0.20 2.8 M 13.0 M heavy snow, 25F, light and variable wind. red dust layer at base of new snow. snow accumulating level 5500' (around Lakewood) and dropping. yesterday afternoon, my flat-area snowstick at 9350' was reading a 26" base , a loss of 5" since Tuesday afternoon. South Beaver Creek and Coal Creek near or at bankfull in some places. This morning Coal creek is overbank and affecting the road just down from Twin Spruce, rising since yesterday afternoon.
4/30/2010 6:30 AM 0.08 1.3 M 11.0 M
5/1/2010 8:00 AM T T M 10.0 M snow coverage 75% on south and west faces. near 100% north, flat and east aspects.
5/2/2010 7:30 AM T T M 9.0 M light-moderate snow developing, 25F
5/3/2010 6:00 AM 0.34 3.2 M 12.0 M gauge catch may be heavy due to high winds and blowing snow. new snow was measured before wind events. Partly cloudy, 23F, west wind 20-30mph.
5/4/2010 7:00 AM 0.00 0.0 M 9.0 M
5/5/2010 6:00 AM T T M 7.0 M another dust layer blew in with yesterday's evening snow showers and high winds.
5/6/2010 6:00 AM T T M 6.5 M 19" of snow in flat areas and north faces, 90% coverage, with mounds and drifts to 3ft. south and west face coverage 40-50%.
5/7/2010 7:00 AM 0.13 2.4 M 8.0 M fairly low density snow partly cloudy, 21F, gusty west wind to 25mph
5/8/2010 6:00 AM T T M 4.0 M
5/9/2010 7:00 AM 0.00 0.0 M M M
5/10/2010 6:00 AM 0.00 0.0 M T M
5/11/2010 6:00 AM T T M T M Fog, 27 degrees, light E wind, rime ice on SE facing sides of trees. a lively snow squall blew in from the WNW around 5:45pm leaving a dusting on cold surfaces after 15 minutes. Supplementary snow stick reads 12", but snow mounds to 30" still common on flat and northerly aspects, with 80% coverage or better. Traces only on south and west aspects.
5/12/2010 8:00 AM 0.64 5.2 M 5.0 M 24F, fog, calm wind.
5/13/2010 7:00 AM 0.13 1.4 M 6.0 M supplementary snow stick reading a 15" base representing flat and north aspects.
5/14/2010 7:00 AM 0.20 2.9 M 8.0 M
5/15/2010 6:00 AM 0.35 1.0 M 4.0 M precip fell as all snow, but didn't start accumulating until 5pm or so.
5/16/2010 6:00 AM T T M 2.0 M
5/17/2010 6:00 AM 0.00 0.0 M T M very few patches of snow on south and west faces remain. Flat and north aspects still hold melt mounds to 3 feet or or more, with 80% coverage.
5/18/2010 6:00 AM 0.00 0.0 M T M
5/19/2010 7:00 AM 0.10 0.0 M T M mostly hail in the gauge.
5/20/2010 7:00 AM 0.00 0.0 M M M
5/21/2010 7:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.00 0.0 M M M
5/23/2010 7:00 AM 0.00 0.0 M M M
5/24/2010 7:00 AM 0.00 0.0 M M M
5/25/2010 6:00 AM T M M M M
5/26/2010 6:00 AM T M M M M
5/31/2010 7:00 AM 0.00 0.0 M M M
6/1/2010 6:00 AM 0.00 0.0 M M M
6/2/2010 7:00 AM 0.00 0.0 M M M
6/3/2010 6:00 AM 0.02 M M M M Few trace sprinkles during the day, then a more consistent (but short lived) light rain around 6pm.
6/4/2010 6:00 AM 0.00 0.0 M M M
6/5/2010 7:00 AM 0.00 0.0 M M M
6/6/2010 7:00 AM T 0.0 M M M
6/7/2010 7:00 AM 0.00 0.0 M M M
6/8/2010 7:00 AM 0.01 M M M M fog, 50F, calm wind.
6/9/2010 6:00 AM T M M M M
6/10/2010 7:00 AM T M M M M
6/11/2010 8:00 AM 0.10 M M M M fog
6/12/2010 8:00 AM 1.74 M M M M light to moderate rain, intermittent small hail or sleet, even a snowflake mixed in here and there. 37F, calm wind.
6/13/2010 7:15 AM 0.56 T M T M a few snowflakes and sleet mixed in, just enough for a little slush to stick on colder surfaces. 36F, calm wind.
6/14/2010 7:00 AM 0.43 T M 0.0 M partly cloudy 38F. yesterday was mixed rain, sleet and snow. A good hour of snow starting around 10am left a trace on the ground, but didn't last long.
6/15/2010 7:00 AM 0.05 M M M M
6/16/2010 7:00 AM 0.00 0.0 M M M
6/17/2010 7:00 AM 0.00 0.0 M M M
6/18/2010 7:00 AM 0.00 0.0 M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 6:00 AM T M M M M
6/22/2010 6:00 AM T M M M M
6/23/2010 7:00 AM 0.00 0.0 M M M
6/24/2010 7:00 AM 0.00 0.0 M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 8:00 AM 0.37 M M M M two pulses of slushy hail intermixed with the rain event
6/28/2010 6:00 AM 0.02 M M M M
6/29/2010 7:00 AM 0.00 0.0 M M M
6/30/2010 7:00 AM 0.00 0.0 M M M
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 8:00 AM 0.07 M M M M mostly cloudy with a few lingering rain drops.
7/3/2010 6:00 AM 0.52 M M M M
7/4/2010 8:00 AM T M M M M upsloping, fog, 50F
7/5/2010 6:00 AM 0.18 M M M M
7/6/2010 6:00 AM 0.00 0.0 M M M
7/7/2010 7:10 AM 0.11 M M M M Fog with light rain and drizzle, calm, 44F.
7/8/2010 6:00 AM 0.18 M M M M Mostly clear, light E wind, 45F, clouds in valley bottoms.
7/9/2010 7:00 AM 0.04 M M M M
7/10/2010 7:00 AM 0.00 0.0 M M M
7/11/2010 6:00 AM 0.08 M M M M
7/12/2010 6:00 AM T M M M M
7/13/2010 6:00 AM 0.00 0.0 M M M
7/14/2010 6:00 AM T M M M M
7/15/2010 6:00 AM 0.04 M M M M
7/16/2010 6:00 AM 0.00 0.0 M M M
7/17/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 6:00 AM 0.00 0.0 M M M
7/19/2010 6:00 AM 0.20 M M M M
7/20/2010 6:00 AM 0.00 0.0 M M M
7/21/2010 6:00 AM 0.10 M M M M
7/22/2010 6:00 AM T M M M M
7/23/2010 7:00 AM 0.00 0.0 M M M
7/24/2010 7:00 AM 0.00 0.0 M M M
7/25/2010 7:00 AM 0.00 0.0 M M M
7/26/2010 6:00 AM 0.00 0.0 M M M
7/27/2010 6:00 AM 0.00 0.0 M M M
7/28/2010 6:00 AM 0.02 M M M M
7/29/2010 6:00 AM 0.02 M M M M
7/30/2010 6:30 AM 0.29 M M M M
7/31/2010 6:00 AM T 0.0 M M M
8/1/2010 6:00 AM 0.00 0.0 M M M
8/2/2010 6:00 AM 0.30 M M M M
8/3/2010 6:00 AM 0.28 M M M M
8/4/2010 6:00 AM 0.08 M M M M
8/5/2010 6:00 AM T M M M M
8/6/2010 6:00 AM 0.01 M M M M
8/7/2010 6:00 AM 0.10 M M M M
8/8/2010 6:00 AM 0.07 M M M M
8/9/2010 6:00 AM T M M M M
8/10/2010 6:00 AM 0.16 M M M M
8/11/2010 7:00 AM 0.00 0.0 M M M
8/12/2010 7:00 AM 0.00 0.0 M M M
8/13/2010 7:00 AM 0.00 0.0 M M M
8/14/2010 7:00 AM 0.00 0.0 M M M
8/15/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 6:00 AM T M M M M
8/17/2010 6:00 AM 0.02 M M M M
8/18/2010 6:00 AM 0.00 0.0 M M M
8/19/2010 7:00 AM 0.00 0.0 M M M
8/20/2010 6:00 AM T M M M M
8/21/2010 7:00 AM 0.00 0.0 M M M
8/22/2010 7:00 AM 0.00 0.0 M M M
8/23/2010 7:00 AM 0.00 0.0 M M M
8/24/2010 7:20 AM 0.29 M M M M cloudy (between high and low cloud decks), drizzle, calm to very light E wind, 45F. 0.27 inches fell yesterday afternoon, .02 before gauge was emptied this morning.
8/25/2010 6:00 AM T 0.0 M M M
8/26/2010 6:00 AM 0.00 0.0 M M M
8/27/2010 7:00 AM 0.00 0.0 M M M
8/28/2010 6:00 AM 0.00 0.0 M M M
8/29/2010 6:00 AM T M M M M
8/30/2010 6:00 AM 0.00 0.0 M M M
8/31/2010 6:00 AM 0.03 M M M M
9/1/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM 0.00 0.0 M M M
9/4/2010 7:00 AM 0.00 0.0 M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.00 0.0 M M M
9/7/2010 7:00 AM 0.00 0.0 M M M
9/8/2010 7:00 AM 0.00 0.0 M M M
9/9/2010 7:00 AM 0.40 M M M M all fell before 6:15 pm, 9/8/2010. a vital soaking, even tree trunks wet.
9/10/2010 6:00 AM 0.00 0.0 M M M gusty west winds to 25mph last night but not strong or consistent. lighter winds this morning. 43F. mostly clear.
9/11/2010 7:00 AM 0.00 0.0 M M M
9/12/2010 7:00 AM 0.00 0.0 M M M
9/13/2010 7:00 AM 0.00 0.0 M M M
9/14/2010 7:00 AM 0.00 0.0 M M M
9/15/2010 6:00 AM 0.00 0.0 M M M
9/16/2010 6:00 AM 0.00 0.0 M M M
9/17/2010 7:00 AM 0.00 0.0 M M M
9/18/2010 7:00 AM 0.00 0.0 M M M
9/19/2010 7:00 AM 0.00 0.0 M M M
9/20/2010 6:00 AM 0.00 0.0 M M M
9/21/2010 6:00 AM T M M M M
9/22/2010 6:00 AM T M M M M
9/23/2010 6:00 AM 0.09 0.0 M M M
9/24/2010 7:00 AM 0.00 0.0 M M M
9/25/2010 7:00 AM 0.00 0.0 M M M
9/26/2010 7:00 AM 0.00 0.0 M M M
9/27/2010 6:00 AM 0.00 0.0 M M M
9/28/2010 6:00 AM 0.00 0.0 M M M
9/29/2010 7:00 AM 0.00 0.0 M M M
9/30/2010 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
12/24/2009 12/26/2009 6:00 PM 3 0.42 10.0 M About 3/4 of the snow in the guage had melted and turned to ice over the 3.5 days I was gone. some evaporation/sublimation is likely.
3/31/2010 4/03/2010 12:00 AM 4 0.00 27.0 M Snow depth on 3/30 35", 99% coverage. Snow depth on 4/4 27", 80% coverage.
5/27/2010 5/30/2010 8:00 PM 4 0.27 0.0 M some evaporation apparent.



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
4/21/2010 4:30 PM the largest hail was only 4mm (about 1/8"), larger hail started first, and was nearly slush. 1/4" Pea Size Rice Rice Mixed|White Ice 15 3min no damage Intermittent True After rain Before smaller hail 10-20
5/18/2010 6:30 PM Unfortunately I missed this storm, probably by a half hour. the largest stones were cone shaped, 0.8" along the long axis, with radial crystals in their centers (pointed end) changing to concentric/cauliflower-like on the outer curved surface. Some pine needles and small twigs broken. 3/4" Penny Size 3/8" 1/4" Pea Size White Ice minor leaf damage False 0.25
6/11/2010 5:30 PM intermittent pulses of hail associated with heavier rain pockets Rice Rice Rice Hard|White Ice 5 2min no damage Intermittent True After rain After smaller hail 10-20
6/11/2010 6:20 PM 1/4" Pea Size Rice Rice Hard|White Ice 10 2min no damage Intermittent True After rain After smaller hail 10-20
6/12/2010 8:53 AM not sure this wasn't mostly sleet, though the few larger stones were cone shaped hail. 1/4" Pea Size Rice Rice Hard|White Ice 15 2min no damage Intermittent False After rain After smaller hail vertical
6/26/2010 3:00 PM most hail was slushy, the few solid stones had clear rims, white centers 1/4" Pea Size Rice Rice Mixed 5 2min no damage Intermittent True After rain After smaller hail 10-20