Station Overview Station Location
Station Number CO-AD-100 Latitude 39.9222750546
Station Name Thornton 2.1 N Longitude -104.95539994
County Adams Elevation (ft) 5244



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 1.09 2.36 29 2.36 29 0.00 0 0 11 2 15.0 5 4
Nov 09 0.89 0.92 29 0.92 29 0.00 0 0 3 1 9.6 2 2
Dec 09 0.69 1.09 30 1.09 30 0.00 0 0 10 0 18.0 10 21
Jan 10 0.48 0.09 30 0.09 30 0.00 0 0 1 2 1.5 1 9
Feb 10 0.44 0.74 28 0.74 28 0.00 0 0 8 3 10.6 8 15
March 10 1.53 2.41 29 2.41 29 0.00 0 0 6 4 16.0 5 9
April 10 1.99 2.89 30 2.89 30 0.00 0 0 9 3 3.4 2 2
May 10 2.25 2.39 31 2.39 31 0.00 0 0 8 4 2.8 1 1
June 10 1.77 2.64 29 2.64 29 0.00 0 0 6 4 0.0 0 0
July 10 1.54 1.15 28 1.15 28 0.00 0 0 11 4 0.0 0 0
Aug 10 1.83 0.97 31 0.18 15 0.79 16 1 2 4 0.0 0 0
Sept 10 1.04 0.07 30 0.07 30 0.00 0 0 3 2 0.0 0 0
Water Year Totals: 15.54" 17.72" 354 days 16.93" 338 0.79" 16 days 1 78 days 33 days 76.9" 34 days 63 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
10/2/2009 0.00
10/3/2009 0.00
10/4/2009 T
10/5/2009 0.01
10/6/2009 0.17
10/7/2009 0.00
10/8/2009 0.02
10/9/2009 0.03
10/10/2009 0.09
10/11/2009 0.06
10/12/2009 0.00
10/13/2009 0.00
10/14/2009 0.00
10/15/2009 0.00
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 0.25
10/22/2009 0.27
10/23/2009 0.00
10/24/2009 0.00
10/25/2009 0.00
10/26/2009 T
10/27/2009 0.00
10/28/2009 0.49
10/29/2009 0.81
10/30/2009 0.16
10/31/2009
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
11/13/2009 0.00
11/14/2009 0.14
11/15/2009 0.69
11/16/2009 0.09
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 T
11/24/2009 0.00
11/25/2009 0.00
11/26/2009 0.00
11/27/2009 0.00
11/28/2009 0.00
11/29/2009 0.00
11/30/2009 0.00
12/1/2009 0.00
12/2/2009 0.09
12/3/2009 0.07
12/4/2009 0.00
12/5/2009 0.00
12/6/2009 0.07
12/7/2009 0.14
12/8/2009 0.04
12/9/2009 0.12
12/10/2009 0.00
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 0.00
12/14/2009
12/15/2009 0.00
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 0.00
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 0.24
12/25/2009 0.00
12/26/2009 0.06
12/27/2009 0.07
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.00
1/2/2010 0.00
1/3/2010 0.00
1/4/2010 T
1/5/2010 0.00
1/6/2010
1/7/2010 0.09
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 0.00
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 0.00
1/25/2010 0.00
1/26/2010 0.00
1/27/2010 0.00
1/28/2010 T
1/29/2010 0.00
1/30/2010 0.00
1/31/2010 0.00
2/1/2010 0.00
2/2/2010 0.00
2/3/2010 0.00
2/4/2010 T
2/5/2010 T
2/6/2010 0.00
2/7/2010 0.00
2/8/2010 0.13
2/9/2010 0.07
2/10/2010 0.00
2/11/2010 0.00
2/12/2010 0.00
2/13/2010 0.00
2/14/2010 0.13
2/15/2010 0.06
2/16/2010 0.00
2/17/2010 0.00
2/18/2010 0.00
2/19/2010 0.19
2/20/2010 0.02
2/21/2010 0.11
2/22/2010 0.03
2/23/2010 0.00
2/24/2010 0.00
2/25/2010 0.00
2/26/2010 T
2/27/2010 0.00
2/28/2010 0.00
3/1/2010 0.01
3/2/2010 0.00
3/3/2010 0.00
3/4/2010
3/5/2010 T
3/6/2010 T
3/7/2010 0.00
3/8/2010 T
3/9/2010 0.00
3/10/2010 0.00
3/11/2010 T
3/12/2010 0.00
3/13/2010 0.00
3/14/2010 0.00
3/15/2010 0.18
3/16/2010 0.00
3/17/2010 0.00
3/18/2010
3/19/2010 0.17
3/20/2010 0.42
3/21/2010 0.00
3/22/2010 0.00
3/23/2010 0.00
3/24/2010 1.60
3/25/2010 0.00
3/26/2010 0.00
3/27/2010 0.03
3/28/2010 0.00
3/29/2010 0.00
3/30/2010 0.00
3/31/2010 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 T
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 T
4/7/2010 0.35
4/8/2010 0.01
4/9/2010 0.00
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 0.08
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 T
4/22/2010 0.51
4/23/2010 0.78
4/24/2010 0.85
4/25/2010 0.00
4/26/2010 0.14
4/27/2010 0.00
4/28/2010 0.00
4/29/2010 0.07
4/30/2010 0.10
5/1/2010 T
5/2/2010 0.00
5/3/2010 0.00
5/4/2010 0.00
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.05
5/8/2010 0.00
5/9/2010 0.00
5/10/2010 0.00
5/11/2010 0.00
5/12/2010 1.33
5/13/2010 0.03
5/14/2010 0.13
5/15/2010 0.55
5/16/2010 0.00
5/17/2010 0.00
5/18/2010 T
5/19/2010 0.11
5/20/2010 T
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 0.00
5/26/2010 T
5/27/2010 0.08
5/28/2010 0.00
5/29/2010 0.00
5/30/2010 0.11
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.00
6/3/2010 0.00
6/4/2010 0.00
6/5/2010 0.00
6/6/2010 T
6/7/2010 0.00
6/8/2010 0.00
6/9/2010 0.00
6/10/2010 0.00
6/11/2010 0.24
6/12/2010 1.53
6/13/2010 0.49
6/14/2010 0.30
6/15/2010 0.00
6/16/2010 0.00
6/17/2010 0.00
6/18/2010 0.00
6/19/2010 T
6/20/2010 0.00
6/21/2010 0.01
6/22/2010 T
6/23/2010 0.00
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 T
6/27/2010 0.07
6/28/2010 0.00
6/29/2010
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 T
7/3/2010 T
7/4/2010 0.00
7/5/2010 0.82
7/6/2010 0.00
7/7/2010 0.03
7/8/2010 0.12
7/9/2010 0.02
7/10/2010 0.00
7/11/2010 0.00
7/12/2010 0.05
7/13/2010 0.00
7/14/2010 0.00
7/15/2010 0.02
7/16/2010 0.00
7/17/2010
7/18/2010 0.00
7/19/2010 0.01
7/20/2010 0.03
7/21/2010 0.02
7/22/2010 0.02
7/23/2010 T
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.00
7/27/2010
7/28/2010 0.01
7/29/2010
7/30/2010 T
7/31/2010 0.00
8/1/2010 0.00
8/2/2010 T
8/3/2010 **
8/4/2010 **
8/5/2010 **
8/6/2010 **
8/7/2010 **
8/8/2010 **
8/9/2010 **
8/10/2010 **
8/11/2010 **
8/12/2010 **
8/13/2010 **
8/14/2010 **
8/15/2010 **
8/16/2010 **
8/17/2010 **
8/18/2010 0.79
8/19/2010 0.00
8/20/2010 0.09
8/21/2010 0.00
8/22/2010 0.00
8/23/2010 0.00
8/24/2010 0.09
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 T
8/29/2010 T
8/30/2010 0.00
8/31/2010 T
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 T
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 0.01
9/19/2010 0.01
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 T
9/23/2010 0.05
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
10/2/2009 7:00 AM 0.00 0.0 M M M
10/3/2009 7:00 AM 0.00 0.0 M M M
10/4/2009 7:00 AM T M M M M Sprinkles approx 05:00 - 05:20, not quite enough to wet all the walks and streets, mostly dry by 06:15.
10/5/2009 7:00 AM 0.01 M M M M Overnight rain, no times known.
10/6/2009 7:00 AM 0.17 M M M M Rain from evening and overnight is frozen solid on outdoor surfaces such as table, auto, rain gauge and funnel. Remove inner tube for the season (not frozen, but taking no chances) 16:00 rain accum: 0.03", 21:00 accum: 0.13". 07:00 0.17".
10/7/2009 7:00 AM 0.00 0.0 M M M
10/8/2009 7:00 AM 0.02 M M M M Light rain / drizzle at observation. Start time after 3 AM estimated.
10/9/2009 7:00 AM 0.03 M M M M 16:20 flurries begin. / 07:00 0.03" was frozen in overflow tube. Observe frost on roofs, decks, autos.
10/10/2009 7:00 AM 0.09 0.6 0.09 0.6 0.09 20:21, precip started, 20:29 snow begins to accum on some elevated surfaces i.e. auto, deck. Light-to-moderate snowfall continuing at obsv time. SWE 0.07" from gauge, 0.09" from two core samples, report 0.09".
10/11/2009 7:00 AM 0.06 0.7 0.06 T T Light to moderate flurries at previous observation continued until 12:40, then occassional flurries throught the afternoon. New snowfall metrics taken at 12:40 .
10/12/2009 7:00 AM 0.00 0.0 M M M Moderate frost.
10/13/2009 7:00 AM 0.00 0.0 M M M
10/14/2009 7:00 AM 0.00 0.0 M M M light fog, heavy dew.
10/15/2009 7:00 AM 0.00 0.0 M M M
10/16/2009 7:00 AM 0.00 0.0 M M M Light dew, mild frost.
10/17/2009 7:00 AM 0.00 0.0 M M M Light frost.
10/18/2009 7:00 AM 0.00 0.0 M M M
10/19/2009 7:00 AM 0.00 0.0 M M M
10/20/2009 7:00 AM 0.00 0.0 M M M
10/21/2009 6:45 AM 0.25 T M T T 16:10, very light mist. 17:25, light drizzle begins. 06:45: Some snow buildup on some hard surfaces, up to 0.1". Report only moisture (all liquid, no snow) from overflow gauge, report T for snow. Precip continues at obsv time.
10/22/2009 7:00 AM 0.27 T M M M 16:30, accum=0.19". / 20:25 accum=0.25", very light rain continues with snow flakes mixed in.
10/23/2009 7:00 AM 0.00 0.0 M M M Overcast.
10/24/2009 7:00 AM 0.00 0.0 M M M
10/25/2009 7:00 AM 0.00 0.0 M M M
10/26/2009 7:00 AM T T T M M 07:46, 40F, Drizzle begins. / 08:49, snowflakes. / intermittent snow showers most of day. No accum.
10/27/2009 7:00 AM 0.00 0.0 M M M
10/28/2009 7:00 AM 0.49 2.3 0.49 2.3 0.49 17:51, first drops, sudden gusty winds. / 19:03, 0.09" accum. / 22:00, 0.25" rain and SWE from overflow tube, snow depth on some hard non-ground surfaces is 1.1" , snow continues. / 07:00 Light freezing rain. Snow depth ranging from 0.0 on ground to 4.4" ( 0.57" SWE) on hard off-the-ground surfaces. / 2.3" ( 0.49 SWE ) on snowboard which is on the (warmer) ground (reported). 0.46" SWE from overflow tube
10/29/2009 7:00 AM 0.81 9.5 0.81 12.6 0.94 07:45, sudden moderate snow, small flakes , grauple. / 09:00, moderate snow. / 11:00, accum 2.7" / 13:00, Snow continues, accum 4.4" / 15:35, intensifying, much larger flakes, 15:55, accum 9.5".
10/30/2009 7:00 AM 0.16 1.9 0.16 11.6 1.07 Light snow most of morning, then light flakes after 6PM.
11/1/2009 7:00 AM 0.00 0.0 M T T High temps yesterday and overnight facilitated a significant meltdown.
11/2/2009 7:00 AM 0.00 0.0 M M M
11/3/2009 7:00 AM 0.00 0.0 M M M
11/4/2009 7:00 AM 0.00 0.0 M M M
11/5/2009 7:00 AM 0.00 0.0 M M M
11/6/2009 7:00 AM 0.00 0.0 M M M
11/7/2009 7:00 AM 0.00 0.0 M M M
11/8/2009 7:00 AM 0.00 0.0 M M M
11/9/2009 7:00 AM 0.00 0.0 M M M
11/10/2009 7:00 AM 0.00 0.0 M M M
11/11/2009 7:00 AM 0.00 0.0 M M M Light frost.
11/13/2009 7:00 AM 0.00 0.0 M M M 44F, overcast, winds calm
11/14/2009 7:00 AM 0.14 T 0.14 T M 15:29, initial grauple. / 15:51, change to flakes and begin to accum on auto roofs and plants. / 16:17, 36F, roofs, lawns, all white. 16:29, thunder, moderate snowfall rate, slush starting to build on warm walks & drives, street. / 18:30, 38F, very light (drizzle type) snow. Accum varies from 0.0" on ground to 1.4" on some surfaces. / 07:00, 37F, overcast, most snow on ground melted, roofs and lawns spotty, measure from melted snow in overflow tube 0.14".
11/15/2009 7:00 AM 0.69 8.5 0.69 5.7 0.58 09:54, 38F very light and scattered flurries. Duration ~ 12 mins, no accum. / 14:13, 37F, Light flakes begin. / 15:23, 36F, a gradual intensity increase to moderate snowfall, larger flakes, initial buildup on some surfaces such as bark groundcover. / ~ 16:30, 37F, stopped. / 17:20, 36F, light snow started. / 21:01, 32F, 1.8" accum on snowboard. / 07:00 29F, small flakes, moderate snowfall. Comparing measurements: Overflow tube: 8.5" snow depth, 0.69" SWE. Board. 5.7 " snow depth, 0.58" SWE, some slush on board. Difference might be melt & runoff from warmer snowboard.
11/16/2009 7:00 AM 0.09 1.1 0.09 4.5 M ~ 10: 45 stopped. 1.1" depth in overflow gauge, 0.09 SWE. Breaking clouds, some sun mid-afternoon.
11/17/2009 7:00 AM 0.00 0.0 M T T 29F, no clouds.
11/18/2009 7:00 AM 0.00 0.0 M M M
11/19/2009 7:00 AM 0.00 0.0 M M M
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 32F, scatter clouds to the East, clearing to the West, colorful sunrise.
11/22/2009 7:00 AM 0.00 0.0 M M M 07:00 34F, calm, ~95% clear sky, some clouds to the N and W.
11/23/2009 7:00 AM T T T M M 07:00, dark cloud above, but can view lighter clouds to the NW and W. Couple of snowflakes. Light frost on rooftops and autos.
11/24/2009 7:00 AM 0.00 0.0 M M M 24F, clear sky
11/25/2009 7:00 AM 0.00 0.0 M M M
11/26/2009 7:00 AM 0.00 0.0 M M M 07:00, 31F, clear above, some scattered clouds to the N and NE., winds calm.
11/27/2009 7:00 AM 0.00 0.0 M M M
11/28/2009 7:00 AM 0.00 0.0 M M M
11/29/2009 7:00 AM 0.00 0.0 M M M 31F, moderate frost.
11/30/2009 7:00 AM 0.00 0.0 M M M 07:00, 29F, calm, clear.
12/1/2009 7:00 AM 0.00 0.0 M M M
12/2/2009 7:00 AM 0.09 1.9 0.09 1.9 0.09 20:55, 31.6F, first flakes. / 07:00, 23:F, winds calm, fine snowflakes at light-to-moderate downfall.
12/3/2009 7:00 AM 0.07 1.7 0.07 3.2 0.21 09:17, 23F, flakes turned to larger, intensity increased to moderate-to-heavy. / 09:56, 23F, sudden change to light flurries. / 10:00: 23F, total new accum = 1.4" on snowboard. / 11:26, 26F, very light flurries, brighter ambient light, patches of blue sky visible to the N. / 11:44, 25F, snow stopped, sunny. 1.7" new accum, 0.07" SWE, 3.2" total accum, 0.21" SWE from core samples on snowboard. / 13:20. 26F, Cloudy. / 07:00 12F, mostly clear sky, calm.
12/4/2009 7:00 AM 0.00 0.0 M 1.7 0.21 11F, calm, clear sky. SWE seems disproportionately high, but measured it 2x, once from snowboard, once from ground, both almost equal.
12/5/2009 7:00 AM 0.00 0.0 M 1.5 0.19
12/6/2009 7:00 AM 0.07 1.3 0.07 3.2 0.27 07:00: 17F, 1.3" new, snowing moderately. Start time after 23:00.
12/7/2009 7:00 AM 0.14 3.1 0.14 6.1 0.37 09:00, 16F, 2.6" new accum. / 10:49, 19F, stopped, sunny. / 2.7 new accum, 0.08"SWE. 14:45, 16F, light snow falling. / 18:00, 12F, light snow continues, 2.9 accum: / 22:05, 10F, snow stopped, light crystals floating down. / 07:00, 7.0F, very light snow.
12/8/2009 7:00 AM 0.04 0.4 0.04 4.6 0.39 23:15, 9.5F, very light granular snow begins. 07:00, 7.7F, light snow continues, core sample more like extra fine granular sugar.
12/9/2009 7:00 AM 0.12 0.8 0.12 3.7 0.46 12:25, break in clouds, some sun, then very light snow again ~ 14:45. / 07:00, clear, calm, -7.7F.
12/10/2009 7:00 AM 0.00 0.0 M 3.5 M
12/11/2009 7:00 AM 0.00 0.0 M 3.5 0.45
12/12/2009 7:00 AM 0.00 0.0 M 3.5 0.49
12/13/2009 7:00 AM 0.00 0.0 M 2.0 0.39 Past 24Hrs: breezy to windy, significant melting. / 07:00, 31F, calm, 50% scattered cloud cover.
12/15/2009 7:00 AM 0.00 0.0 M 0.5 0.18
12/16/2009 7:00 AM 0.00 0.0 M T T
12/17/2009 7:00 AM 0.00 0.0 M T T
12/18/2009 7:00 AM 0.00 0.0 M M 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 7:00 AM 0.00 0.0 M M M
12/22/2009 7:00 AM 0.00 0.0 M M M
12/23/2009 7:00 AM 0.19 2.2 0.19 2.2 0.19 07:00, 24F, Light snow flurries continue.
12/24/2009 7:00 AM 0.24 5.7 0.24 7.7 0.49 10:04, 27F, 0.5" new accum since 0700. / 12:02, 29F, 1.8" new accum. / 15:01, 29F, 2.0" new accum. Heavy cloud cover all day, light snow continues, and significant UV melting occurring. / 15:47, 28F, larger, lazy flakes, intensity increases, beginning to stick to walks and street. Winds calm all day. / 16:56, 27F, light snow continues, 2.4” accum. / 17:20, 24F, E. wind kicks up. / 19:10, 21F, 3.5” accum / 21:04, 17F, winds 5-to-17+mph since 17:20, 3.8:” accum, blowing snow continues. / 07:00, 6.0F, calm, clearing sky.
12/25/2009 7:00 AM 0.00 0.0 M 6.0 0.53 Drifting occurred, void from previous core sample filled in. 07:00, 14F, calm, overcast.
12/26/2009 7:00 AM 0.06 0.6 0.06 7.5 0.78 07:00 21F, very light flakes falling. Note both readings for SWE (melted value) seemed skewed to the high side, so retook, almost identical. Core sample for Ttl snow was off grass, so included some ice.
12/27/2009 7:00 AM 0.07 0.3 0.07 6.5 0.73 Stopped 10:55, sunny by 11:05, readings taken at 11:05.
12/28/2009 7:00 AM 0.00 0.0 M M M
12/29/2009 7:00 AM 0.00 0.0 M 4.5 0.66 07:00, 16F, overcast.
12/30/2009 7:00 AM 0.00 0.0 M 3.5 0.68
12/31/2009 7:00 AM 0.00 0.0 M 3.0 0.41 07:00, 10F, moderate frost, mostly clear skies.
1/1/2010 7:00 AM 0.00 0.0 M 1.5 0.22
1/2/2010 7:00 AM 0.00 0.0 M 1.0 0.21 07:00, 19F, overcast above, to the E, S, some blue to the N. Core sample all icy.
1/3/2010 7:00 AM 0.00 0.0 M 1.0 0.18
1/4/2010 7:00 AM T T T 0.5 0.16 15:30, 36F, flakes. / 16:00, 35F, Light but steady, large, lazy, flakes. / 16:18, 34F, increased intensity. / 16:33, stopped, 0.0" to 0.1" accum .
1/5/2010 7:00 AM 0.00 0.0 M 0.5 0.06
1/7/2010 7:00 AM 0.09 1.5 0.09 1.5 0.09 ~10:00, light flakes. / 16:00, 0.4" accum. / 20:05, very light snowfall, 1.5" total.(not rounded) / 20:15, stopped. / 07:00, minus 7F, added trace of flakes.
1/8/2010 7:00 AM 0.00 0.0 M 1.0 0.07 07:00 minus 2F.
1/9/2010 7:00 AM 0.00 0.0 M 0.5 0.07
1/10/2010 7:00 AM 0.00 0.0 M 0.4 0.05
1/11/2010 7:00 AM 0.00 0.0 M T T
1/12/2010 7:00 AM 0.00 0.0 M T T
1/13/2010 7:00 AM 0.00 0.0 M T T 07:00, 41F, cloudy overhead, clear to the east.
1/14/2010 7:00 AM 0.00 0.0 M T T
1/15/2010 7:00 AM 0.00 0.0 M T T
1/16/2010 7:00 AM 0.00 0.0 M T T
1/17/2010 7:00 AM 0.00 0.0 M T T
1/18/2010 7:00 AM 0.00 0.0 M T T Moderate frost.
1/19/2010 7:00 AM 0.00 0.0 M T T 07:00, 29F, light frost, cloud cover.
1/20/2010 7:00 AM 0.00 0.0 M T T
1/21/2010 7:00 AM 0.00 0.0 M T T
1/22/2010 7:00 AM 0.00 0.0 M T T
1/23/2010 7:00 AM 0.00 0.0 M M M
1/24/2010 7:00 AM 0.00 0.0 M M M
1/25/2010 7:00 AM 0.00 0.0 M M 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 T T T T T 07:00, 31F, overcast, winds calm. Snowfall range from wet ground to 0.1", reporting trace.
1/29/2010 7:00 AM 0.00 0.0 M M M
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 7:00 AM 0.00 0.0 M M M
2/2/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 max temp 45.1F @ 14:26, peak wind gust 25.7 mph WNW @ 10:15.
2/3/2010 7:00 AM 0.00 0.0 M M M
2/4/2010 6:30 AM T T T T T 06:30, 32F, light snowfall, trace buildup on ground, a bit more on cars.
2/5/2010 7:00 AM T T T 0.0 0.00 Snowing lightly at previous Obs, stopped approx 08:10. Winds calm until 14:56, then variable WNW-ENE with peak gust 29.7mph WNW @ 15:55. Winds calm again @ 18:38, max temp 45.6F @ 15:50. 07:00. Calm, 23.0F.
2/6/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 07:00, 34F, 100% low cloud cover, winds 0-4 mph.
2/7/2010 7:00 AM 0.00 0.0 M M M 07:00, 26.9F, overcast, winds calm, bar 29.99 & rising.
2/8/2010 6:25 AM 0.13 1.4 0.13 1.4 0.13 07:19, snow pellets. 27.1F, winds calm, bar 30.01 & rising. / 08:58, light pellets continue, Trace only. 28.3F. / 11:06, moderate flakes, 0.4" ttl accum. 29.4F / 13:02, small, ight flakes, 0.5" ttl accum. 30.7F, 15:04, light flakes continue, 0.6" ttl accum. 15:35, intensity increase, change to pellets. 31.2F. / 17:02, very light pellets continue, 0.8" accum, 29.6F / 19:04, occasional pellet, ttl acum 0.9". 28.8F. / 05:45, snowing moderately.
2/9/2010 7:00 AM 0.07 1.4 0.70 1.7 M Light snow all day, very fluffy. Changed daily precip from .70 to .07. CK
2/10/2010 7:00 AM 0.00 0.0 M 0.6 M 07:00, mostly clear skies
2/11/2010 7:00 AM 0.00 0.0 M T M
2/12/2010 7:00 AM 0.00 0.0 M T T
2/13/2010 7:00 AM 0.00 0.0 M M M
2/14/2010 7:00 AM 0.13 3.1 0.13 3.1 0.13 Peak wind 23.9mph NNE @ 16:07. Max Temp 48.5F @ 13:13. Last 12 hours winds mostly calm until 23:30, then 3-19mph, generally SSE - ESE. (19.0mph ESE @ 03:06, also lowest WC @ minus 7.8F). / 07:00, 15.8F, snowing moderately, straight down, small flakes, winds calm since 05:40. Core sample is fluffy, light, mostly larger flakes.
2/15/2010 7:00 AM 0.06 0.4 0.06 3.5 0.22 Sunday: Min temp 15.2F @ 07:54. 09:00, very fine snow continues from 07:00 obsv, but clouds breaking up, patches of blue visible. 11:04, Not snowing (stop time not known), sunny, 0.4" additional fine snow, take core reading, 3.5" SWE 0.22". Max temp during day 27.1 F @ 16:13. 07:00
2/16/2010 7:00 AM 0.00 0.0 M 1.4 0.14
2/17/2010 7:00 AM 0.00 0.0 M 0.6 M
2/18/2010 7:00 AM 0.00 0.0 M T M 32F, 70% overcast, moderate frost.
2/19/2010 7:00 AM 0.19 2.1 0.19 2.1 0.19 14:09, snow starts, 37F. 17:27: 0.3" moderate rate, small flakes. 29.7F. 19:33: 0.5" moderate rate, small & granular. 26F. 21:20: 1.4" moderate rate, large fluffy. 24.6F. 07:00, 2.1" not snowing. Winds 0-5mph mostly ENE until 10:23, changing to 0-22mph ENE - ESE. Bottom core sample is ice, did not get total amount, so the 0.19" SWE might have been a bit higher.
2/20/2010 7:00 AM 0.02 0.2 0.02 1.9 0.22
2/21/2010 7:00 AM 0.11 1.6 0.11 3.6 0.39 Light intermittent flakes all day since ~ 09:30. // Began steady but very light @ ~ 14:30// 17:15, intensity increases, trace accum. 26ºF. // 21:00 0.3" accum very fuffy. // Peak wind 16.3mph E @ 00:53, lowest WC -4.7ºF @ 00:53. // Wind summary: variable 0- 16.3mph ESE-ENE since 18:00 // 07:00, 16.8ºF, light snow continues.
2/22/2010 7:00 AM 0.03 0.4 0.03 3.1 0.29 Very light snow since obsv, 08:45, snowfall intensity increased, simultaneously Sol outline visible through cloud cover. // 13:00 Very light snow continues, but walks, streets drying, what is falling is evaporating. // 15:12, From flurries to moderate downfall. Accum begins. 21.2ºF, duration 55 mins. wind 2.0mph SSE // 18:06, occasional light flakes, trace accum, 18.0ºF // 06:00. 0.2" - 0.5", measure & report 0.4"
2/23/2010 7:00 AM 0.00 0.0 0.00 2.1 0.32 Core sample sugar-like.
2/24/2010 7:00 AM 0.00 0.0 0.00 0.9 0.28 Core sample all ice, hard ice.
2/25/2010 7:00 AM 0.00 0.0 0.00 0.5 0.22
2/26/2010 7:00 AM T T T 0.5 M Trace to 0.1" snow.
2/27/2010 7:00 AM 0.00 0.0 0.00 T T
2/28/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Max temp 52.3ºF @ 14:16. Peak wind gust 16.3mph SW @ 15:27, WC low 14.1ºF @ 04:43.
3/1/2010 7:00 AM 0.01 0.1 0.10 0.1 0.10 17:37, Sleet starts. 30.9F. // 17:55, turns to light snow. 30.3F. // Snow accum varied Trace to 0.3", collect and report an "average" sample.
3/2/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/3/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/5/2010 7:00 AM T 0.0 0.00 0.0 0.00 07:00, Trace of graupel on ground in shaded areas, 33F.
3/6/2010 7:00 AM T T T T T 12:01, light sprinkles. // 12:03, occasional pellet. // 12:09, moderate graupel with some large rain drops. // 12:11, stopped 43.1ºF, clouds moving out. // 12:14, sunny. // 07:00, sunny, 29.9ºF, light frost,
3/7/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Sat: Tmax=54.3ºF @ 15:11 @ , peak breeze=17.6 mph SSW @ 17:23. // 07:00, light frost, foggy w/ vis approx 0.25 mile, 29.6ºF, wind 3.3 mph ENE, bar 30.09 & rising, RH 83%.
3/8/2010 7:00 AM T 0.0 0.00 0.0 0.00 Overnight low temp 34.5°F @ 22:52, peak breeze 9.1 mph NNW @ 04:40. Light rain overnight, minimal beading on auto roof, // Current: winds calm, 37.9°F, walks and streets are drying, no accum in gauge.
3/9/2010 6:45 AM 0.00 0.0 0.00 0.0 0.00 Cloudy all day, peak wind 23.4mph ENE @ 02:37
3/10/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Last 24:00; Peak wind gust 27.9 mph ESE @ 14:26, temp max 52.7ºF @ 13:01. // 07:00 Mostly cldy, some breaking to SE. Light frost, 28.5F.
3/11/2010 7:00 AM T T 0.00 0.0 0.00 Intermittent snow showers ~ 12:55 to 14:30. Light frost, overnight low temp 28.0F @ 06:22.
3/12/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Peak breeze 19.6 mph WSW @ 11:46, wind chill low 15.6F @ 22:28.
3/13/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/14/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/15/2010 7:00 AM 0.18 0.3 M 0.3 M 11:44, large lazy flakes, winds variable 0.0 - 10.5 mph E. / 13:20, Stopped, trace. // 15:25, rain, 40.4F, winds 0.0 - 7.3mph ESE. / 17:28, 35.9F, drizzle continues, ttl accum = 0.05" rain. 20:47, Observe snow flurries. 07:00, 85% RH, 30.9F, Winds calm, cloudy, snow accum on above ground objects, walks and streets drying. 0.3" icy snow on board, but reading (0.18") is from total rain and snowmelt in gauge.
3/16/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/17/2010 6:30 AM 0.00 0.0 0.00 0.0 0.00 Peak wind gust 25.5 mph SE, @ 07:26, note calm for 2 hours pre, and 0.0 up to 4.0mph NNW for 1 hour post. T low 28.0F @ 07:30, T max 61.7F @ 16:38. Current 32.5F, RH 56%, winds calm
3/19/2010 7:00 AM 0.17 1.6 0.12 1.6 0.12 Peak wind gust 21.9mph ENE @ 17:23. Max temp 62.2F @ 13:50. 07:00 27.3F, winds calm, snowing w/ large flakes, no accum on streets, but 1.6" on board with icy base. Use rain & snow accum in tube for the 0.17" reading.
3/20/2010 7:00 AM 0.42 4.4 0.42 4.5 0.43 10:00 1.6" new snow, 27.1F, light snowfall. // 12:35, 3.5" new, 28.0F. // 14:04, heavy snowfall. Vis ~ 3 city blocks, 27.5F. // 16:16, intermittent whiteouts since 14:04, 23.7F, 4.8" accum. // 19:00, light snowfall, large flakes, 4.9", very light snowfall. // 20:30, snow stopped. 22.1F. // 07:00, Mostly overcast, 14.1F, winds calm, RH 79%, bar rising, snow depth less than last measurement, 4.4", 0.5" overnight compression/settling.
3/21/2010 7:00 AM 0.00 0.0 0.00 1.5 0.33 Core sample=icy crystals. Tlo: 13.8F @ 07:02, Thi: 34.3F @ 17:44, Winds 0.0 to 8.7 WNW since midnight, current 23.0F, clear sky, winds 5.0mph WNW, RH 62%, bar 30.20hg & falling, DP 12.4F.
3/22/2010 7:00 AM 0.00 0.0 0.00 T T
3/23/2010 7:00 AM 0.00 0.0 M T T Couple of patches in shaded area.
3/24/2010 7:00 AM 1.60 9.6 1.28 9.6 M Rain at 14:27, snow started 16:46. took rain reading of 0.32. Add core swe for total. Light snow continues at obsv.
3/25/2010 7:00 AM 0.00 0.0 0.00 5.5 1.14 Core sample icy.
3/26/2010 7:00 AM 0.00 0.0 0.00 5.5 0.91 Icy core sample, no snow left on any hard surface area exposed to sun. Cloudy, overcast 100%, 29.3F, RH 76%, winds variable 0.0 - 5.0 mph NE.
3/27/2010 7:00 AM 0.03 T T 2.0 0.52 16:12. light rain, 39.9F, winds 11.8mph ESE. Changed to snow at 16:18, 41.1F. winds 7.6mph ESE. Peak wind 16.3 E @ 16:35. 17:20, stopped, no snow acumm, 35.7F, winds 2.0 mph, N. // Max wind gust 27.2mph ESE @ 23:45 // 07:00, overcast, 35.6F, winds 10.0mph ESE, 35.7F (note only 2 degree variance in temp since 17:20 reading), icy core sample.
3/28/2010 7:00 AM 0.00 0.0 M T T Temp hi 46.5F @ 17:15. Wind: daytime 12 hrs 7AM-7PM: (324 data points) Max 33.3mph ESE @ 15:24, Min 4.6 mph ESE @16:30, Avg 15.7 mph.
3/29/2010 7:00 AM 0.00 0.0 0.00 T T Trace of drifted snow in shaded area. Winds picked up ~ 03:30, generally N, NNE with peak gust 33.5mph N @ 5:43.
3/30/2010 7:00 AM 0.00 0.0 M T T Peak wind gust 28.8mph NE @ 07:49, tmax 67.2 @ 16:47. Approx 5 sq foot of drifted snow left in shaded area.
3/31/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 T-high 79.3F @ 15:43. T-low 43.8F @ 06:28, breeze peaked at 31.5mph NNE @ 16:32.
4/1/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/2/2010 7:00 AM T 0.0 0.00 0.0 0.00 16:52, 49.1F, wind ESE 7.6mph, large rain drops. 30 seconds later, small mushy hail mixed in w/rain. / 17:03, 47.5F, intensity increases from very light to light, irreg shaped hail now is not melting/disintegrating on impact on ground cover plants, some up to 0.1" on snow scale, most smaller some only width of scale marker on snow scale. 17:08, thunder, noted brkn clouds to E, SE, darker to N, NW. Ground now all wetted with very minimal (if any) runoff. // 17:12, hail stopped, light rain (sprinkles) only. 17:41, stopped, 43.9F. 17:44, a few sun rays. 18:02, 30 seconds of hail, 42.9F. // 18:39, peak breeze 21.6mph NNE, WC=22.9F. 18:48, sudden graupel, most very round, white, lightly falling, most are measuring to center of the 0.2" measuring line on snow scale, some less, down to 0.1", w/ rays of sun, duration ~ 2 mins, 42.6F.
4/3/2010 7:00 AM 0.00 0.0 M 0.0 0.00
4/4/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Winds changed from calm @ 10:18 WSW, 31.7mph WSW @ 10:50, 31.3mph WSW @ 11:43, max effort 38.0mph NNW @ 15:30(Temp=56.3F).Calm again @ 20:39.
4/5/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/6/2010 6:34 AM T 0.0 0.00 0.0 0.00 Overnight precip, times unkwn, walks mostly dry. Breaking clouds to W, S, heavy, dark cloulds w/ lightning, thnder to N, NE with darkest ~ Greeley area.
4/7/2010 7:00 AM 0.35 2.9 0.24 2.9 0.24 07:03, rain & hail, hail duration ~ 11mins, rain duration ~ 72 mins, Ttl accum 0.11. / Peak wind gust 42.0mph ENE @ 13:55. // 07:00, Overnight snow, start time unknwn, 2.9" snow depth, with SWE 0.24", light lazy flakes falling.
4/8/2010 7:00 AM 0.01 0.5 0.01 3.4 0.25 Snow continued at obsv time, with 0.5" additional, very light, fluffy flakes. Snow stopped, sunny almost immediately.
4/9/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/10/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
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 7:00 AM 0.00 0.0 M M M Peak breeze 27.1 mph S @ 23:58.
4/14/2010 7:00 AM 0.00 0.0 M M M multiple winds gusts exceeding 40mph, winner is 43.1mph WSW @ 14:31.
4/15/2010 7:00 AM 0.00 0.0 M M M
4/16/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/17/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/18/2010 7:00 AM 0.08 0.0 0.00 0.0 0.00 12:03, drops. / Light rain most of afternoon. / Peak breeze 18.7 mph NE @ 15:04 / 15:20 Rain stopped, 0.08" accum. / 16:30, some sunlight breaking through. / Mostly sunny remainder of afternoon. / T-Hi 51.9F @ 17:58 / 07:00: Heavy dew, RH 86%, DP 31.6F, Temp 35.4F, winds calm.
4/19/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/20/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Max Breeze 20.8 mph S @22:06. At obsv: Overcast, breeze 8.9 mph N, WC 33.1F, DP 37.5F, temp 42.9F, RH 81%.
4/21/2010 7:00 AM T 0.0 0.00 0.0 0.00 Indications of overnight light rain (very damp areas on cement) and some indications of sprinkles on some surfaces, but only T in gauge, and heavy dew with light scattered fog.
4/22/2010 7:00 AM 0.51 0.0 0.00 0.0 0.00 19:55, drops. 20:30 to 21:12, several loud thunderclaps. 00:58, heavy rain. 05:45, walks partially dry. 06:30, moderate rainfall.
4/23/2010 7:00 AM 0.78 0.0 0.00 0.0 0.00 09:41. drops: 09:51. downpour, 10:34, Sunny. 14:18 - 15:03. rain. Ttl accum since 06:30 is 0.14". 18:06, rain. 20:35 reading 0.06" or 0.26" ttl additional accum. 07:00 raining lightly, 0.78" total accum.
4/24/2010 7:00 AM 0.85 T T 0.0 0.00 Accums: 09:02, 0.22". 11:10, 0.71". 11:31, 36.3 F, very large flakes. 11:44, 34.1F, light, small flakes. 11:55, light rain. 13:05, 0.81", stopped raining. 17:16, drops, for 1 min. / Peak day wind gust 31.3mph NW @ 10:52. Peak night wind gust 37.1 mph NE @ 02:40. At 07:00, T=41.7F, RH=60%, DP= 28.8F , winds 8-17 mph N, Bar rising.
4/25/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Cloudy until approx 14:00, then sunny, winds kicking up with peak gust @ 32.8 mph NE @14:42
4/26/2010 7:00 AM 0.14 T T T T Peak day breeze 21.6mph NW @ 13:51. 18:09, drops, 48.7F, winds 9.0mph ENE. 18:20, steady rain, Peak evening/night breeze 24.1 mph NW @ 19:40. 07:00 Obs: 90% clear sky, trace of snow on grass, slight snow buildup on rooftops. Rain & snow frozen on auto windshield, also frozen on rain gauge.
4/27/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/28/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
4/29/2010 6:30 AM 0.07 T T T T Peak wind 28.8 mph West @ 13:53. 11:15 - 11:45,possible rain/hail noted by family member . Overnight rain = 0.07". Light rain until 06:27, suddenly turned to moderate snow. Noted brown layer on bottom of measuring tube, milky when shaken. Also noted moderate layer of brownish silt on autos and where moisture puddled from runoff of autos. Report on KOA850 indicates this dust from Arizona dust storm.
4/30/2010 7:00 AM 0.10 T T T T Precip total from snow/rain mix, although it snowed, all melted upon contact. Significant amount of brown/red dust. Article made page 1, section B of Denver post: http://www.denverpost.com/search/ci_14988383
5/1/2010 7:00 AM T T T 0.0 0.00 15:47. 45.5F, winds calm, sunny, brkn clds, and 3 minute graupel shower. Graupel very small, pin-head sized. 07:00 Obsv: 32.7F, mostly clear, winds calm, RH=69%, DP=23.6F, bar rising.
5/2/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 T hi 56.4F @ 14:34 Tlow 33.6F @ 06:13.
5/3/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Peak wind 29.0mph NNW @ 14:46, corresponding WC 27.9F.
5/4/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Peak wind gust 57.4mph NW @ 06:33
5/5/2010 6:15 AM 0.00 0.0 0.00 0.0 0.00 Windy all day, w /peak gust 38.0 mph WSW @ 14:32.
5/6/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
5/7/2010 7:00 AM 0.05 T T T T Multiple showers added up to 0.03". Overnight freezing rain and dusting of snow accum was 0.02". Overnight Tlow 29.4F @ 06:23.
5/8/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
5/9/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 TLo 34.3F @ 07:13, hi 56.8F @ 14:44, current 38.6F, RH 61%, DP 26.4F, bar falling, clear skies.
5/10/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 7:00, overcast, darker and low clouds to N, NE and W.
5/11/2010 6:30 AM 0.00 0.0 0.00 0.0 0.00 Peak wind gust 30.4mph NNW @ 16:55. Tmax 64.7F @ 15:55. Overnight Tlow 36.4F @ 06:01. 06:30 Obsv: overcast, 37.7F, RH 71%, winds calm.
5/12/2010 7:00 AM 1.33 2.8 0.46 2.8 0.46 Overcast all day, peak breeze 23.4mph NNE @18:02. Rain starts 16:21, t 45.5F. / Incrementals: 18:00 0.26" / 18:48, frzg rain, t 36.6F / 18:55, hail or frzg rain, irreg shape, translucent, 1/3 of uncooked rices sized, 36.3F. / 18:59, occasional white round snow pellet (graupel) mixed in T36.1F, accum 0.47". Moderate and steady rate of precip. Winds 8-22mph N/NW, WC ranging from 23.3F to 13.3F last 7 mins. / 19:09, changed to rain. / 19:29, moderate sized snowflakes mixed w/rain, 24.2F, WC 18.4F / 20:01, 0.63" accum, r/snow mix continues, 34.7F, winds 12.7mph N. / 21:00, 0.2" slush build-up on car roof, 33.2F, WC 24.2F. / 21:02, Slush building in funnel, remove funnel and inner tube. 0.84" ttl accum. / 07:00 SWE from captured in overflow since funnel removed = 0.49", report 0.84" + 0.49 = 1.33". Separately, 2.8" snow, SWE from that measurement = 0.46". Winds calm, 31.2F.
5/13/2010 7:00 AM 0.03 0.0 0.00 0.0 0.00 Cloudy all day with several momentary bursts of of sun, daytime temp range only 31.2 - 35.9F. / 17:26, rain
5/14/2010 7:00 AM 0.13 0.0 0.00 0.0 0.00
5/15/2010 7:00 AM 0.55 0.0 0.00 0.0 0.00 More sun than clouds, then ~ 14:25 overcast. / 15:46, sprinkles. 57.0F. / 15:59, thunder, harder rain. / 16:45, 0.32" accum, 47.4F. / 17:45, 0.49", sprinkling. / 18:44, 0.52", light sprinkles continue, 45.5F. / 19:50, 0.53", very light sprinkles continue, 44.9F. / 20:30, 0.55", stopped. Clear water sample, no dust as in recent samplings.
5/16/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 At Obsv: RH 83%, 40.4F, clear skies, winds calm, heavy dew.
5/17/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
5/18/2010 7:00 AM T 0.0 0.00 0.0 0.00 16:34 ,Thi 74.1F. 19:41, 4 minute shower, 68.0F, RH 45%, DP 45.9, wind 12.7mph SSE. / 07:00, Overcast, 50.5F, RH 77%, DP 43.5F, winds under 5mph N.
5/19/2010 7:00 AM 0.11 0.0 0.00 0.0 0.00 13:06 thunder, dark clds building and moving up from S. / Brief showers at 13:35, 17:36 (heavier) ttl accum 0.02". / 19:34 T & L, 19:36 sprinkles, 19:44 harder rain, some hail up to 0.2" dia. / 20:23 peak wind gust 28.8mph NNE / 20:29 rain stopped, 0.10" accum. 07:00AM check was 0.11".
5/20/2010 7:00 AM T 0.0 0.00 0.0 0.00
5/21/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 07:00, broken cover, mostly overcast, winds 0-5mph NW, 51.2F, RH 79%, DP 44.9F.
5/22/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 7:00 69.9F, RH 27%, clear, 11.0+ mph SW breezes.
5/23/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Peak gust 38.5 mph WSW @ 13:55, Thi 87.4F @ 15:44, lo 42.4F @ 06:01. At approx 19:13, wind shifted to NE and temp dropped to 57.0F @ 20:58 (21.6F drop), still dropping but more slowly.
5/24/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Winds picked up after 11:30, most S, SE, peaked @ 25.7 mph WSW @ 17:48. Thi 74.1 @ 18:10. 07:00, 57.2F, winds dead calm, sunny.
5/25/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00 Winds dead calm until 07:22, picking up from S, SW. Peak wind gust 46.0 mph SW @12:39. Thi 74.3F @ 11:09, lo 42.4F @ 02:03. Current: 6.4mph SW, 51.2F, 38% RH, rising.
5/26/2010 7:00 AM T M M M M Brief sprinkles, rain cloud appeared to be approx 1-2 miles East. Sunny during event, with mostly blue sky above.
5/27/2010 7:00 AM 0.08 M M M M 20:02, dark clds moving rapidly up from SW, surface winds calm. / 20:15, Li @ Thndr. / 20:22, large drops for 90 secds. / 20:27, SW winds kicking up, rain/hail mix begins, hail up to 0.2". / 20:34, stopped, 0.08" accum. heaviest @ 20:29 -32. / Winds stayed under 10.0 mph S., return to calm @ 20:36. / 07:00 57.7F, RH 76%, winds 7.8 mph NW, thin, brkn, overcast.
5/28/2010 7:00 AM 0.00 0.0 0.00 0.0 0.00
5/29/2010 7:00 AM 0.00 0.0 M M M Max gust 25.9 mph SE @ 20:22. Current: 50% brkn, 63.5F, RH 43%, DP 40.8F, winds calm.
5/30/2010 7:00 AM 0.11 0.0 0.00 0.0 0.00 13:34, winds picking up. Max daytime gust 22.3 mph N. @ 15:38, T-hi 76.4F @ 13:43. 18:15, Darkening skies, very dark along foothills. Max evening gust 26.3mph NNE @ 18:58. 19:01, 2 min sprinkles. 20:01 ltng/thndr, 20:09, large drops, then heavier rain with some hail mixed, 0.1 to 0.2". / 07:00. clear, sunny 49.2F, RH 69%,
5/31/2010 7:00 AM 0.00 0.0 M M M
6/1/2010 7:00 AM 0.00 0.0 M M M
6/2/2010 7:00 AM 0.00 0.0 M M M 07:00 Mostly cloudy above, blue sky to west and east. 55.7F
6/3/2010 7:00 AM 0.00 0.0 M M M 07:00 overcast, 57.7F, 55% RH, winds 12 mph SSW.
6/4/2010 7:00 AM 0.00 0.0 M M M
6/5/2010 7:00 AM 0.00 0.0 M M M Hi 90.3F @ 16:43, Lo 61.1F @ 06:04, Peak wind 19.4 mph NW @ 14:11. / @ Obsv: Winds 1.0 mph SSE, 64.2F, 56% RH, DP 48.2F, mostly thin overcast, brkn @ sctrd to N, NW.
6/6/2010 7:00 AM T M M M M Peak breeze 16.1 MPH SE @ 08:38, T Hi 83.1F @ 15:31, RH low 24% @ 14:36. Cloudy most of day. 18:39, 6 minute shower, large drops, surface winds under 5MPH, rain from trailing edge of large cloud mass moving E, Trace, intermittent sunny immediately after rain stopped. / 07:00 6.2mph NW, 100% clear sky above.
6/7/2010 7:00 AM 0.00 0.0 M M M T hi 89.2F @ 16:14. @ ~ 17:20 clouds increase and breezes picked up, peak breeze 22.1 mph NE @ 18:31. 07:00: clear sky, winds calm, thin cloud cover to S, clearer N.
6/8/2010 7:00 AM 0.00 0.0 M M M 07:00 winds calm, 99% overcast, 61.1F, RH 73%.
6/9/2010 7:00 AM 0.00 0.0 M M M
6/10/2010 7:00 AM 0.00 0.0 M M M Lo 58.8F @ 07:00, hi 84.3F @ 16:12, peak wind gust 21.2 mph NNW @ 18:08.
6/11/2010 7:00 AM 0.24 M M M M 16:23, distant but crisp thunder. Increasing clouds, 79.1F, winds calm. / 18:11, overcast, darkening stormy skies, constant thunder, 75.7F, tornado warnings on local TV channel 31. / 18:18, initial rain drops, large. 18:24, raining hard, winds kicked up, peak gust 23.6 NNW @ 18:26, hail report submitted. / 18:35, stopped, 1 min later sunny, calm, with near constant distant thunder rumbles.
6/12/2010 7:00 AM 1.53 M M M M 15:27, thunder. 15:31, light rain begins. 15:49 intensity increases. 16:14, intensity decrease, sunny. 16:19 stopped 0.37" accum 19:36 rain starts hard, ~ 2 mins. 20:35, 0.46" accum, drizzle continues. Storms throughout the night, w/ peak wind 35.1 mph NNE @ 01:36, winds momentarily calm @ 05:24. / 07:00, overcast, drizzling, 46.2F, RH 88%, DP 42.8F, winds 9.1 mph NNE.
6/13/2010 7:00 AM 0.49 M M M M Drizzle, sprinkles/rain most of Sat. Incremental accums: 12:04 0.13" 18:02 0.17", 07:00 0.49". Sprinkling at obsv.
6/14/2010 7:00 AM 0.30 M M M M Accums since 07:00: 11:02, 0.14", sprinkling. 17:05 0.19", not preciping. 20:00, 0.20", sprinkles, clearing to the W, w/ sun streaks on houses. 22:05 0.29" not raining. 07:00 0.30" overcast, not raining.
6/15/2010 7:00 AM 0.00 0.0 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 T M M M M 19:47, sparse drops from passing cloud. Peak breeze of the day 22.7 mph WSW @ 16:09. At Obsv: overcast, 62.4F, winds calm, RH 72%, DP 52.4F.
6/20/2010 7:00 AM 0.00 0.0 M M M 07:00, overcast, winds calm, 62.7F, RH 78%, DP 55.8F, some dew on hard surfaces.
6/21/2010 7:00 AM 0.01 M M M M Short shower from one dark cloud, brkn clouds to W, large drops, bottom of tube dark w/ sediment, cars dirty. At obsv, dew noticeable, RH 81% , DP 57.4F, T 63.3F, winds calm, low, moderate to heavy overcast.
6/22/2010 7:00 AM T M M M M
6/23/2010 7:00 AM 0.00 0.0 M M M T low 51.4 @ 06:14
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 T M M M M 04:35- 05:20 disturbance produced some wind and deposited drops on windows on N side of house.
6/27/2010 7:00 AM 0.07 M M M M 16:55, Thndr, 16:59 lgtng, 17:12, rain, 17:18. max wind 19.6 mph N, 17:41. stopped. 07:00, 61.5F, winds calm, ;last record breeze 5.7 mph N. @ 03:51 , clr sky.
6/28/2010 7:00 AM 0.00 0.0 M M M ~ 16:00 cloud buildup. 16:53, Large, dark bank of mammatus clouds passing over.
6/30/2010 7:00 AM 0.00 0.0 M M M Peak wind 27.2 mph SW @ 23:41, T hi 89.4F @ 16:48, lo 64.2F @ 06:02.
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM T 0.0 M M M 22:53, short light shower. T=75F, RH 40%. 07:00 T=68.5F, RH 55%, winds calm (since midnight).
7/3/2010 7:00 AM T M M M M 1-2 min showers @ 9:02, 14:13. Peak wind 30.1 mph N @ 14:38.
7/4/2010 7:00 AM 0.00 0.0 M M M Hi 91.7F @ 15:01, lo 59.5F @ 06:24. peak wind 27.0 mph SW @ 18:17. Current: 59.5F (continues), rh 75%, dp 51.6F, winds 0-5 mph N, mostly cloudy, scattered patches of blue, bar rising.
7/5/2010 7:00 AM 0.82 M M M M Showers at 15:39 (trace), 16:34 (0.01") 18:42-45 (0.13" additional") 19:32, light rain begins. Rain very intense from 21:04 - 21:14. Accum @ 21:16=0.66", Lighter rain continued past 22:55. Total at obsv 0.82". Peak wind gusts: 17:32, 18.3 mph SSE, 21.1 mph NNE @ 19:57. / At obsv: 52.8F, RH 88%, DP 49.4F, winds calm, sky above 100% clear, some clds S of Longs' over Indian Peaks range.
7/6/2010 7:00 AM 0.00 0.0 M M M Obsv: Cloudless sky, 61.1ºF, DP 45.3ºF, RH 56%, bar falling, wind 3.1 mph NNW.
7/7/2010 7:00 AM 0.03 M M M M Light sprinkles from 17:45 - ~ 18:30, trace only. 0.03 in gauge at obsv from overnight event. 07:00, 100% cloud cover, 55.2F, rh 78%, winds calm, dp 48.5F.
7/8/2010 7:00 AM 0.12 M M M M Rain @ 14:47 - 15:57 = 0.05", 17:42 - 19:10 = 0.04", overnight = 0.03"
7/9/2010 7:00 AM 0.02 M M M M Obsv: 54.1F, RH 84%, DP 49.4F, clear sky, winds calm.
7/10/2010 7:00 AM 0.00 0.0 M M M
7/11/2010 7:00 AM 0.00 0.0 M M M 13:35 dark cld build up to the W. 13:58, distant Thndr. 13:00-18:51 windiest period, peak gust 21.6mph WNW @ 17:52. Obsv: 61.3F, 64% RH, 50.2F DP, winds calm, sky clear.
7/12/2010 7:00 AM 0.05 M M M M Intense rainbow toward end of rainfall.
7/13/2010 7:00 AM 0.00 0.0 M M M
7/14/2010 7:00 AM 0.00 0.0 M M M
7/15/2010 7:00 AM 0.02 M M M M Trace with large drops 18:48 - 18:55. Main rain 19:40-20:05.
7/16/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M hi 97.5F @ 15:35, peak breeze 25.0 mph NE @ 18:09. Obsv: 68.1F, 53% RH, winds calm, 10% scattered clds.
7/19/2010 7:00 AM 0.01 M M M M
7/20/2010 7:00 AM 0.03 M M M M PM TS followed by sun. 07:00: 62.7F, 72% RH, DP 53.6F, winds under 6 mph NNE, overcast, Bar rising.
7/21/2010 7:00 AM 0.02 M M M M 15:11, drops. 16:06, Thunder, occasional sprinkles, 17:05, very very light steady drizzle. 17:25, ends, 0.01" accum. Brkn clds, thunder continues, dark clouds appear to be moving in from SW. 19:55 Sprinkles, dual rainbow. 07:00 Obsv: overcast, 63.1F, 73% RH, bar rising , winds calm.
7/22/2010 7:00 AM 0.02 M M M M 15:04, thunder & light rain. 15:40, light rain ends. 15:41 peak wind 24.6 mph.
7/23/2010 7:00 AM T M M M M Trace approx 5:45, only a coupe of drops, if you were not outside, you would have never known.
7/24/2010 7:00 AM 0.00 0.0 M M M FROPA producing winds from 22:33 to 3:13, peak gust 25.7 mph NNE @ 22:49. / 07:00 Obsv: 60.6F (also low temp), brkn clouds overhead, dark bank to W, NW. RH 58%, DP 46.9F, winds calm.
7/25/2010 7:00 AM 0.00 0.0 M M M
7/26/2010 7:00 AM 0.00 0.0 M M M
7/28/2010 7:00 AM 0.01 M M M M 13:50 Quick buildup of quite dark storm clouds to the W, NW. / 14:44 Thunder & lightning, winds picking up. / 15:07 to 15:25, light but wind-driven rain. Peak gust 23.3 mph. / Traces of smoke, possibly from the Weld Co. haystack fire? 09:25, 18:55, 03:25.
7/30/2010 7:00 AM T M M M M winds kicked up 15:30, peak wind 34.4 NW @ 16:21. 8 min shower @ 16:49 enough to wet most of sidwalks. 07:00: 64.7F , RH 73%, DP 55.9F, winds 3.3 mph NW, very scattered clouds overhead, but sunrise blocked.
7/31/2010 7:00 AM 0.00 0.0 M M M Clouded over ~ 14:30, breezes picked up, peak gust 33.1 mph NNE @ 16:56. 07:00- 50% scattered clds, 63.1F, RH 73%, winds calm.
8/1/2010 7:00 AM 0.00 0.0 M M M
8/2/2010 7:00 AM T M M M M 16:44: Trace of wind-driven droplets. 16:51: Peak wind gust 28.4 mph NNW. 19:37: 6 minute drizzle.
8/19/2010 7:00 AM 0.00 0.0 M M M
8/20/2010 7:00 AM 0.09 M M M M 16:36, sprinkles. 16:38, winds kick up, thndr. 16:40 light-moderate rain, 16:59. rain continues, as does thndr. 0.03" accum. 17:18, drizzle, 0.07" accum. 20:21, distant T-claps. 20:26, begin 18 minute light rain. winds 14-19 mph WNW.
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 7:00 AM 0.09 M M M M PM and overnight showers. Current 54F, DP 47F, RH 78%.
8/25/2010 7:00 AM 0.00 0.0 M M M
8/26/2010 7:00 AM 0.00 0.0 M M M
8/27/2010 7:00 AM 0.00 0.0 M M M
8/28/2010 7:00 AM T M M M M
8/29/2010 7:00 AM T M M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM T M M M M Sprinkles but mostly blue sky.
9/1/2010 6:30 AM 0.00 0.0 M M M 4:12 to 4:20: thndr from dark clds to East, 1 loud clap approx every 45 seconds, with numerous smaller claps in between. Sunny the entire time. 06:30 current: 52.8F, calm, clear skies, 62% RH DP 40.1F, bar rising.
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 07:00 Obsv: 48.0F, 60% RH, winds 3.5mph NW, clear skies, bar falling.
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 Obsv: 56.3F, DP 37.9F, 50%RH, 1.0% scattered clouds, winds calm.
9/7/2010 7:00 AM 0.00 0.0 M M M Windy, 15-27 mph SE, large plume of smoke from 4 Mile Canyon fire visible, several thousand feet high, from source to eastern horizon. intermittent periods of smoke detected, this location must be on southern fringe of plume. Obsv: no plume, but smoke in air, 45.1F, 41%, winds 3.6 mph NW.
9/8/2010 7:00 AM 0.00 0.0 M M M
9/9/2010 7:00 AM T M M M M Several showers starting at 16:42, ending ~ 20:00
9/10/2010 7:00 AM 0.00 0.0 M M M
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 01:18 Woken by smell of smoke, closed windows. Unknown source, either Four Mile (near Boulder) and/or Carter Lake (Larimer County near Loveland) Noticable at 07:00.
9/14/2010 7:00 AM 0.00 0.0 M M M
9/15/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:00 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 0.01 M M M M Current: 54.5F, 78% RH, bar rising, 100% overcast, light sprinkles/misting, winds 1.8 mph NE (varying 0.0 to 4.5mph).
9/19/2010 7:30 AM 0.01 M M M M Intermittent sprinkles/drizzle throughout the morning until ~ 11AM. Sun begins approx 13:15. Current: 42.8F, 82%RH, clear sky, winds calm.
9/20/2010 7:00 AM 0.00 0.0 M M M
9/21/2010 7:00 AM 0.00 0.0 M M M 18:55:19:03 fropa winds up to 20mph WNW, several rounds of thunder @ 19:05. Current: 50.7F, 66% RH. 50% broken clouds with darker clds to the East.
9/22/2010 7:00 AM T M M M M Disturbances moving through with lighting, thunder @ 17:55, 19:17, 20:55. Drops only at 21:03.
9/23/2010 7:00 AM 0.05 M M M M 14:55-16:05, light rain/drizzle, accum = 0.01". Stopped, then 16:32 - ~17:00, light rain, accum 0.03". Later rain added 0.02"
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 07:00, 43.5F, 61% RH, wind 1.0mph N, clear sky, bar rising.
9/26/2010 7:00 AM 0.00 0.0 M M M
9/27/2010 7:00 AM 0.00 0.0 M M M
9/28/2010 7:00 AM 0.00 0.0 M M M 46.9F, 65% RH, winds calm.
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
8/3/2010 8/18/2010 11:55 PM 16 0.79 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
5/26/2010 8:27 PM barely dented the pad. 1/4" Pea Size 1/4" Pea Size Rice Hard|Clear Ice 3 1min no damage Continuous False Same time as rain Same time as smaller hail vertical 160 .5
5/29/2010 8:10 PM Most were between 0.1 to 0.2", about half the size of a pea, not very concentrated per sq ft. Barely imprinted pad. 1/4" Pea Size NA Rice Hard|White Ice 2 1min no damage Continuous True After rain Same time as smaller hail vertical 2.0
6/10/2010 6:34 PM Most were normal "round" but the larger (approx 0.4" to 0.5") were shaped more like a red blood cell, that is, round but somewhat flattened, the largest (0.7") were the same but with an abnormal protrusion added. 3/4" Penny Size 3/8" 1/4" Pea Size Hard|Clear Ice 4 1min minor leaf damage Continuous True After rain After smaller hail 10-20 1.0