Station Overview Station Location
Station Number CO-AD-216 Latitude 39.96741944
Station Name Thornton 6.2 NNE Longitude -104.8935667
County Adams Elevation (ft) 5157



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 14 0.97 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 14 0.79 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 14 0.54 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 15 0.41 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 15 0.38 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 15 1.39 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 15 1.82 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 15 2.18 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 15 1.74 0.05 12 0.05 12 0.00 0 0 2 1 0.0 0 0
July 15 1.56 1.99 31 1.99 31 0.00 0 0 12 6 0.0 0 0
Aug 15 1.77 0.56 31 0.56 31 0.00 0 0 8 3 0.0 0 0
Sept 15 1.03 0.21 29 0.21 29 0.00 0 0 4 3 0.0 0 0
Water Year Totals: 14.58" 2.81" 103 days 2.81" 103 0.00" 0 days 0 26 days 13 days 0.0" 0 days 0 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
10/1/2014
10/2/2014
10/3/2014
10/4/2014
10/5/2014
10/6/2014
10/7/2014
10/8/2014
10/9/2014
10/10/2014
10/11/2014
10/12/2014
10/13/2014
10/14/2014
10/15/2014
10/16/2014
10/17/2014
10/18/2014
10/19/2014
10/20/2014
10/21/2014
10/22/2014
10/23/2014
10/24/2014
10/25/2014
10/26/2014
10/27/2014
10/28/2014
10/29/2014
10/30/2014
10/31/2014
11/1/2014
11/2/2014
11/3/2014
11/4/2014
11/5/2014
11/6/2014
11/7/2014
11/8/2014
11/9/2014
11/10/2014
11/11/2014
11/12/2014
11/13/2014
11/14/2014
11/15/2014
11/16/2014
11/17/2014
11/18/2014
11/19/2014
11/20/2014
11/21/2014
11/22/2014
11/23/2014
11/24/2014
11/25/2014
11/26/2014
11/27/2014
11/28/2014
11/29/2014
11/30/2014
12/1/2014
12/2/2014
12/3/2014
12/4/2014
12/5/2014
12/6/2014
12/7/2014
12/8/2014
12/9/2014
12/10/2014
12/11/2014
12/12/2014
12/13/2014
12/14/2014
12/15/2014
12/16/2014
12/17/2014
12/18/2014
12/19/2014
12/20/2014
12/21/2014
12/22/2014
12/23/2014
12/24/2014
12/25/2014
12/26/2014
12/27/2014
12/28/2014
12/29/2014
12/30/2014
12/31/2014
Day of YearDaily PrcpMultiday Prcp
1/1/2015
1/2/2015
1/3/2015
1/4/2015
1/5/2015
1/6/2015
1/7/2015
1/8/2015
1/9/2015
1/10/2015
1/11/2015
1/12/2015
1/13/2015
1/14/2015
1/15/2015
1/16/2015
1/17/2015
1/18/2015
1/19/2015
1/20/2015
1/21/2015
1/22/2015
1/23/2015
1/24/2015
1/25/2015
1/26/2015
1/27/2015
1/28/2015
1/29/2015
1/30/2015
1/31/2015
2/1/2015
2/2/2015
2/3/2015
2/4/2015
2/5/2015
2/6/2015
2/7/2015
2/8/2015
2/9/2015
2/10/2015
2/11/2015
2/12/2015
2/13/2015
2/14/2015
2/15/2015
2/16/2015
2/17/2015
2/18/2015
2/19/2015
2/20/2015
2/21/2015
2/22/2015
2/23/2015
2/24/2015
2/25/2015
2/26/2015
2/27/2015
2/28/2015
3/1/2015
3/2/2015
3/3/2015
3/4/2015
3/5/2015
3/6/2015
3/7/2015
3/8/2015
3/9/2015
3/10/2015
3/11/2015
3/12/2015
3/13/2015
3/14/2015
3/15/2015
3/16/2015
3/17/2015
3/18/2015
3/19/2015
3/20/2015
3/21/2015
3/22/2015
3/23/2015
3/24/2015
3/25/2015
3/26/2015
3/27/2015
3/28/2015
3/29/2015
3/30/2015
3/31/2015
Day of YearDaily PrcpMultiday Prcp
4/1/2015
4/2/2015
4/3/2015
4/4/2015
4/5/2015
4/6/2015
4/7/2015
4/8/2015
4/9/2015
4/10/2015
4/11/2015
4/12/2015
4/13/2015
4/14/2015
4/15/2015
4/16/2015
4/17/2015
4/18/2015
4/19/2015
4/20/2015
4/21/2015
4/22/2015
4/23/2015
4/24/2015
4/25/2015
4/26/2015
4/27/2015
4/28/2015
4/29/2015
4/30/2015
5/1/2015
5/2/2015
5/3/2015
5/4/2015
5/5/2015
5/6/2015
5/7/2015
5/8/2015
5/9/2015
5/10/2015
5/11/2015
5/12/2015
5/13/2015
5/14/2015
5/15/2015
5/16/2015
5/17/2015
5/18/2015
5/19/2015
5/20/2015
5/21/2015
5/22/2015
5/23/2015
5/24/2015
5/25/2015
5/26/2015
5/27/2015
5/28/2015
5/29/2015
5/30/2015
5/31/2015
6/1/2015
6/2/2015
6/3/2015
6/4/2015
6/5/2015
6/6/2015
6/7/2015
6/8/2015
6/9/2015
6/10/2015
6/11/2015
6/12/2015
6/13/2015
6/14/2015
6/15/2015
6/16/2015
6/17/2015
6/18/2015
6/19/2015 T
6/20/2015 0.00
6/21/2015 0.00
6/22/2015 0.00
6/23/2015 0.00
6/24/2015 0.00
6/25/2015 0.03
6/26/2015 0.00
6/27/2015 0.00
6/28/2015 0.00
6/29/2015 0.02
6/30/2015 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2015 0.01
7/2/2015 0.08
7/3/2015 0.06
7/4/2015 0.00
7/5/2015 0.00
7/6/2015 0.04
7/7/2015 T
7/8/2015 T
7/9/2015 0.18
7/10/2015 0.80
7/11/2015 0.19
7/12/2015 0.01
7/13/2015 0.00
7/14/2015 0.01
7/15/2015 0.30
7/16/2015 0.30
7/17/2015 T
7/18/2015 T
7/19/2015 T
7/20/2015 0.00
7/21/2015 0.00
7/22/2015 T
7/23/2015 0.00
7/24/2015 0.00
7/25/2015 0.01
7/26/2015 0.00
7/27/2015 0.00
7/28/2015 0.00
7/29/2015 0.00
7/30/2015 0.00
7/31/2015 0.00
8/1/2015 0.00
8/2/2015 0.00
8/3/2015 0.07
8/4/2015 T
8/5/2015 0.00
8/6/2015 0.00
8/7/2015 0.00
8/8/2015 0.00
8/9/2015 0.00
8/10/2015 0.02
8/11/2015 T
8/12/2015 0.10
8/13/2015 0.00
8/14/2015 0.00
8/15/2015 0.10
8/16/2015 0.09
8/17/2015 T
8/18/2015 0.01
8/19/2015 0.15
8/20/2015 0.00
8/21/2015 0.00
8/22/2015 0.00
8/23/2015 0.00
8/24/2015 0.00
8/25/2015 0.00
8/26/2015 0.00
8/27/2015 0.00
8/28/2015 0.02
8/29/2015 0.00
8/30/2015 0.00
8/31/2015 0.00
9/1/2015 0.02
9/2/2015 T
9/3/2015 0.00
9/4/2015 0.02
9/5/2015 T
9/6/2015 M
9/7/2015 0.00
9/8/2015 0.11
9/9/2015 0.00
9/10/2015 0.00
9/11/2015 0.00
9/12/2015 0.00
9/13/2015 0.00
9/14/2015 0.00
9/15/2015 0.00
9/16/2015 0.00
9/17/2015 0.00
9/18/2015 0.00
9/19/2015 0.00
9/20/2015 0.00
9/21/2015 0.00
9/22/2015 0.00
9/23/2015 0.00
9/24/2015 0.00
9/25/2015 0.00
9/26/2015 0.00
9/27/2015 0.00
9/28/2015 0.00
9/29/2015 0.06
9/30/2015 T



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
6/19/2015 8:00 AM T 0.0 M M M Very light thunderstorm began about 9:25 p.m. and ended about 9:45 p.m.
6/20/2015 8:00 AM 0.00 0.0 M M M
6/21/2015 8:00 AM 0.00 0.0 M M M
6/22/2015 8:00 AM 0.00 0.0 M M M
6/23/2015 8:00 AM 0.00 0.0 M M M
6/24/2015 8:00 AM 0.00 0.0 M M M Heard thunder from about 7:15 p.m. to 7:50 p.m. yesterday
6/25/2015 8:00 AM 0.03 0.0 M M M First heard thunder at 4:35 p.m.; thunderstorm with light rain began at 4:43 p.m. and ended about 5:10 p.m.; thunder ended at 5:20 p.m. A second, light rain shower began about 8:05 p.m. and ended about 9:05 p.m.
6/26/2015 8:00 AM 0.00 0.0 M M M
6/27/2015 8:00 AM 0.00 0.0 M M M
6/28/2015 8:00 AM 0.00 0.0 M M M
6/29/2015 3:00 PM 0.02 0.0 M M M Thunder heard at 5:50 p.m. yesterday; thunderstorm began at 6:05 p.m. and ended at 6:30 p.m. Rain measurement probably suffered from some evaporation; my Davis gauge collected 0.03".
6/30/2015 8:00 AM 0.00 0.0 M M M
7/1/2015 3:00 PM 0.01 0.0 M M M A very-light rain shower began yesterday at 5:25 p.m. and lasted 20 minutes (trace). A light rain shower began at 7:30 p.m. and ended about 8:15 p.m. (0.01"). Again I read the gauge late, so evaporation from the tube may have occurred; my Davis gauge collected 0.02".
7/2/2015 8:00 AM 0.08 0.0 M M M A rain shower began yesterday at 4:05 p.m. and ended about 4:35 p.m. A rain shower began this morning about 6:15 a.m. and ended about 6:40 a.m.
7/3/2015 8:00 AM 0.06 0.0 M M M A rain shower began yesterday at 7:15 p.m.; thunder was heard starting at 7:30 p.m., and both ended at 7:50 p.m. A second (but light) thunderstorm began at 8:15 p.m. and ended at 8:50 p.m.
7/4/2015 8:00 AM 0.00 0.0 M M M
7/5/2015 8:00 AM 0.00 0.0 M M M
7/6/2015 8:00 AM 0.04 0.0 M M M I noticed a few sprinkles at 3:00 p.m. yesterday which continued for about 45 minutes. More sprinkles began at 5:00 p.m. and lasted until about 6:30 p.m. I saw a few more drops after dark. The measured amount from my gauge came overnight.
7/7/2015 8:00 AM T 0.0 M M M Very, very light rain fell yesterday from about 1:25 p.m. to about 8:30 p.m. It may have been sporadic, and it never wet the pavement, but when outside I felt a few light droplets now and then. My Davis gauge registered 0.01" between midnight and 12:30 a.m. today.
7/8/2015 8:00 AM T 0.0 M M M Occasional light sprinkles at times yesterday.
7/9/2015 8:00 AM 0.18 0.0 M M M Light rain fell yesterday from 9:00 a.m. to 10:00 a.m. It began again about 2:00 p.m. increasing to moderate rain from about 2:30 p.m. then back to light rain about 4:15 p.m. before ending about 7:50 p.m.
7/10/2015 8:00 AM 0.80 0.0 M M M A string of thunderstorm cells began their travels over our home starting at 4:30 p.m. yesterday and continued until about 7:40 p.m. Pea-sized hail fell starting at 4:40 p.m. and ending 3 minutes later. Another small shower passed over about 3:30 this morning.
7/11/2015 8:00 AM 0.19 0.0 M M M Prodigious lightning & thunder began yesterday at 9:10 p.m.; a heavy thunderstorm began at 9:25 p.m., heaviest just after 10:00 p.m., then tapering off and ending about 10:45 p.m. Most of the lightning were cloud-to-ground strokes; impressive!
7/12/2015 8:00 AM 0.01 0.0 M M M A rain shower began yesterday at 6:15 p.m. and became a thunderstorm at 6:25 p.m.; the rain stopped at 6:35 p.m., and the thunder ended at 6:45 p.m. There also was a weak double rainbow during the latter stages of the storm.
7/13/2015 8:00 AM 0.00 0.0 M M M
7/14/2015 8:00 AM 0.01 0.0 M M M A light rain shower began at 2:15 p.m. yesterday and ended about 2:45 p.m. (Tr). Light rain began at 7:25 p.m. and ended at 8:25 p.m. (.01").
7/15/2015 8:00 AM 0.30 0.0 M M M Thunder at about 3:50 p.m. yesterday became a heavy thunderstorm five minutes later. Its intensity lightened up to moderate about 4:05 p.m., and it was raining (without thunder) only lightly by 4:35 p.m. Rain ended about 6:50 p.m. There was not a lot of wind (a couple minutes of 20+ mph gusts at onset) or lightning with this storm.
7/16/2015 8:00 AM 0.30 0.0 M M M Thunder began yesterday at 4:35 p.m., and a moderate thunderstorm started at 4:45 p.m. It quickly changed to a heavy storm with high wind and some pea-sized hail at 5:00 p.m. The hail ended 4 minutes later. By 5:10 p.m. the heavy rain lightened up a bit and continued to taper off until ending at 5:15 p.m.
7/17/2015 8:00 AM T 0.0 M M M A brief, light thunderstorm began yesterday at 3:45 p.m. and ended about 3:50 p.m.
7/18/2015 8:00 AM T 0.0 M M M Thunder began at 3:28 p.m. yesterday along with a brief thunderstorm with only a few sprinkles from 3:38 p.m. to about 3:40 p.m.
7/19/2015 8:00 AM T 0.0 M M M A very-light thunderstorm began yesterday at 3:00 p.m.; rain began falling at 3:22 p.m. and ended about 3:30 p.m. Rain was enough to wet the concrete.
7/20/2015 8:00 AM 0.00 0.0 M M M
7/21/2015 8:00 AM 0.00 0.0 M M M
7/22/2015 8:00 AM T 0.0 M M M A few sprinkles of rain dotted the pavement starting at 3:10 p.m. yesterday and lasting about 5 minutes. A few more sprinkles from a nearby thunderstorm began at 10:25 p.m. and lasted less than 20 minutes (end time not known).
7/23/2015 8:00 AM 0.00 0.0 M M M
7/24/2015 8:00 AM 0.00 0.0 M M M
7/25/2015 9:15 PM 0.01 0.0 M M M Light rain began yesterday before 4:10 p.m. and ended about 6:45 p.m. A few sprinkles fell between 7:20 p.m. and about 7:30 p.m. My gauge was emptied late, so some evaporation probably occurred. (My Davis station reported 0.02".)
7/26/2015 8:00 AM 0.00 0.0 M M M
7/27/2015 8:00 AM 0.00 0.0 M M M
7/28/2015 8:00 AM 0.00 0.0 M M M
7/29/2015 8:00 AM 0.00 0.0 M M M
7/30/2015 8:00 AM 0.00 0.0 M M M
7/31/2015 8:00 AM 0.00 0.0 M M M
8/1/2015 8:00 AM 0.00 0.0 M M M
8/2/2015 8:00 AM 0.00 0.0 M M M
8/3/2015 8:00 AM 0.07 0.0 M M M A light rain shower began at 2:20 p.m. yesterday and changed to a light thunderstorm at 2:45 p.m. Thunder ended about 3:30 p.m., and the rain ended sometime before 5:30 p.m.
8/4/2015 8:00 AM T 0.0 M M M A few sprinkles of rain began about 4:30 p.m. yesterday, duration unknown.
8/5/2015 8:00 AM 0.00 0.0 M M M
8/6/2015 8:00 AM 0.00 0.0 M M M
8/7/2015 8:00 AM 0.00 0.0 M M M
8/8/2015 8:00 AM 0.00 0.0 M M M
8/9/2015 8:00 AM 0.00 0.0 M M M
8/10/2015 8:00 AM 0.02 0.0 M M M A light thunderstorm began yesterday at 6:45 p.m. and ended about 7:15 p.m. A second light thunderstorm began about 8:00 p.m. and ended about 8:20 p.m.
8/11/2015 8:00 AM T 0.0 M M M A light rain shower, which managed to wet the pavement, began yesterday at 3:05 p.m. and ended about 3:20 p.m.
8/12/2015 8:00 AM 0.10 0.0 M M M A thunderstorm with mostly light rain and little wind began yesterday at 5:32 p.m. and ended at 6:10 p.m. A second, lighter rain shower began about 6:40 p.m. and ended about 7:00 p.m.
8/13/2015 8:00 AM 0.00 0.0 M M M
8/14/2015 8:00 AM 0.00 0.0 M M M
8/15/2015 8:00 AM 0.10 0.0 M M M A light rain shower began yesterday at 6:05 p.m. and ended some time before 6:50 p.m.
8/16/2015 8:00 AM 0.09 0.0 M M M There were a few sprinkles yesterday at 6:05 p.m. A light rain shower began at 10:55 p.m. and ended about 11:10 p.m. During the early morning hours, light rain fell between 1:10 a.m. and 2:20 a.m.
8/17/2015 8:00 AM T 0.0 M M M A very-light rain shower that barely wet the pavement began yesterday at about 5:50 p.m. and ended at 6:10 p.m.
8/18/2015 8:00 AM 0.01 0.0 M M M A quickly-moving storm began yesterday at about 2:35 p.m. and lasted less than half an hour.
8/19/2015 8:00 AM 0.15 0.0 M M M Light rain showers fell yesterday in late afternoon, one began at 4:53 p.m. and lasted about 12 minutes. Another began at 6:30 and lasted about 30 minutes. After that, a low, overcast sky spit rain all evening. A steadier (and a little heavier) rain began sometime after 11:30 p.m. and extended to about 2:00 a.m.
8/20/2015 8:00 AM 0.00 0.0 M M M
8/21/2015 8:00 AM 0.00 0.0 M M M
8/22/2015 8:00 AM 0.00 0.0 M M M
8/23/2015 8:00 AM 0.00 0.0 M M M
8/24/2015 8:00 AM 0.00 0.0 M M M
8/25/2015 8:00 AM 0.00 0.0 M M M
8/26/2015 8:00 AM 0.00 0.0 M M M
8/27/2015 8:00 AM 0.00 0.0 M M M
8/28/2015 8:00 AM 0.02 0.0 M M M A light rain shower began yesterday at 3:50 p.m. and ended at 4:05 p.m. A light thunderstorm began at 4:24 p.m. and ended at 4:35 p.m.
8/29/2015 8:00 AM 0.00 0.0 M M M
8/30/2015 8:00 AM 0.00 0.0 M M M
8/31/2015 8:00 AM 0.00 0.0 M M M
9/1/2015 8:00 AM 0.02 0.0 M M M A very-light rain shower began yesterday at 10:00 a.m. and lasted for more than 5 minutes (did not really wet the pavement). A very-light rain shower began at 4:15 p.m., increased to light rain at about 4:45 p.m. and ended about 5:55 p.m.
9/2/2015 8:00 AM T 0.0 M M M A very-light rain shower began yesterday at 5:00 p.m. and finished before 5:05 p.m.
9/3/2015 8:00 AM 0.00 0.0 M M M
9/4/2015 8:00 AM 0.02 0.0 M M M A light rain shower began yesterday at 5:20 and lasted about 15 minutes.
9/5/2015 8:00 AM T 0.0 M M M A few sprinkles yesterday barely wet the pavement between 6:20 p.m. and 6:35 p.m.
9/6/2015 8:00 AM M 0.0 M M M When I was away from home, a rain shower was in the area of my gauge yesterday afternoon between about 6:00 p.m. and 6:30 p.m. The gauge was empty when checked later. Perhaps a trace of rain occurred (certainly nothing measureable).
9/7/2015 8:00 AM 0.00 0.0 M M M
9/8/2015 8:00 AM 0.11 0.0 M M M It began to rain very lightly (concurrent with a strong wind) yesterday at 2:25 p.m. At 2:35 p.m. it turned into a heavy thunderstorm which lasted about 10 minutes. The rainfall ended about 3:30 p.m.
9/9/2015 8:00 AM 0.00 0.0 M M M
9/10/2015 8:00 AM 0.00 0.0 M M M
9/11/2015 8:00 AM 0.00 0.0 M M M
9/12/2015 8:00 AM 0.00 0.0 M M M
9/13/2015 8:00 AM 0.00 0.0 M M M
9/14/2015 8:00 AM 0.00 0.0 M M M
9/15/2015 8:00 AM 0.00 0.0 M M M
9/16/2015 8:00 AM 0.00 0.0 M M M
9/17/2015 8:00 AM 0.00 0.0 M M M
9/18/2015 8:00 AM 0.00 0.0 M M M
9/19/2015 8:00 AM 0.00 0.0 M M M
9/20/2015 8:00 AM 0.00 0.0 M M M
9/21/2015 8:00 AM 0.00 0.0 M M M
9/22/2015 8:00 AM 0.00 0.0 M M M
9/23/2015 8:00 AM 0.00 0.0 M M M
9/24/2015 8:00 AM 0.00 0.0 M M M
9/25/2015 8:00 AM 0.00 0.0 M M M
9/26/2015 8:00 AM 0.00 0.0 M M M
9/27/2015 8:00 AM 0.00 0.0 M M M
9/28/2015 8:00 AM 0.00 0.0 M M M
9/29/2015 8:00 AM 0.06 0.0 M M M Rain fell early this morning between 2:30 and 3:30 MDT. More rain fell between 5:50 a.m. and 6:00 a.m.
9/30/2015 8:00 AM T 0.0 M M M Light rain showers yesterday began at 4:00 p.m. and ended about 4:35 p.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
7/15/2015 5:00 PM When hail was falling: very heavy rain and wind. 1/4" Pea Size 1/4" Pea Size 1/4" Pea Size Hard|White Ice 4 1min no damage Continuous True After rain