Station Overview Station Location
Station Number CO-AD-207 Latitude 39.947543
Station Name Thornton 3.9 NNE Longitude -104.937969
County Adams Elevation (ft) 5348



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 18 1.05 1.13 4 1.13 4 0.00 0 0 4 0 3.0 1 0
Nov 18 0.79 0.00 3 0.00 3 0.00 0 0 0 3 4.0 2 0
Dec 18 0.61 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 19 0.42 0.25 1 0.25 1 0.00 0 0 1 0 4.9 2 0
Feb 19 0.40 0.66 4 0.66 4 0.00 0 0 2 2 10.9 3 0
March 19 1.51 1.06 4 1.06 4 0.00 0 0 2 2 10.9 3 0
April 19 1.88 0.78 4 0.78 4 0.00 0 0 3 1 2.5 1 0
May 19 2.28 2.13 10 2.13 10 0.00 0 0 7 3 3.1 1 1
June 19 1.83 0.99 6 0.99 6 0.00 0 0 5 1 0.0 0 0
July 19 1.57 2.02 9 2.02 9 0.00 0 0 6 3 0.0 0 0
Aug 19 1.89 0.00 1 0.00 1 0.00 0 0 0 1 0.0 0 0
Sept 19 1.00 0.60 3 0.60 3 0.00 0 0 3 0 0.0 0 0
Water Year Totals: 15.23" 9.62" 49 days 9.62" 49 0.00" 0 days 0 33 days 16 days 39.3" 13 days 1 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
10/1/2018
10/2/2018
10/3/2018
10/4/2018
10/5/2018
10/6/2018 0.23
10/7/2018
10/8/2018 0.34
10/9/2018
10/10/2018
10/11/2018
10/12/2018
10/13/2018
10/14/2018 0.35
10/15/2018
10/16/2018
10/17/2018
10/18/2018
10/19/2018
10/20/2018
10/21/2018
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018
10/28/2018
10/29/2018
10/30/2018
10/31/2018 0.21
11/1/2018
11/2/2018
11/3/2018 T
11/4/2018
11/5/2018
11/6/2018
11/7/2018
11/8/2018
11/9/2018
11/10/2018
11/11/2018 M
11/12/2018 M
11/13/2018
11/14/2018
11/15/2018
11/16/2018
11/17/2018 T
11/18/2018 T
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018
11/26/2018
11/27/2018
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018
12/3/2018
12/4/2018
12/5/2018
12/6/2018
12/7/2018
12/8/2018
12/9/2018
12/10/2018
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018
12/16/2018
12/17/2018
12/18/2018
12/19/2018
12/20/2018
12/21/2018
12/22/2018
12/23/2018
12/24/2018
12/25/2018
12/26/2018
12/27/2018
12/28/2018
12/29/2018
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019
1/2/2019
1/3/2019
1/4/2019
1/5/2019
1/6/2019
1/7/2019
1/8/2019
1/9/2019
1/10/2019
1/11/2019
1/12/2019 M
1/13/2019
1/14/2019
1/15/2019
1/16/2019
1/17/2019
1/18/2019
1/19/2019
1/20/2019
1/21/2019
1/22/2019
1/23/2019
1/24/2019
1/25/2019
1/26/2019
1/27/2019
1/28/2019 0.25
1/29/2019
1/30/2019
1/31/2019
2/1/2019
2/2/2019
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019 0.25
2/8/2019
2/9/2019
2/10/2019
2/11/2019
2/12/2019
2/13/2019
2/14/2019
2/15/2019
2/16/2019
2/17/2019
2/18/2019 T
2/19/2019 T
2/20/2019
2/21/2019
2/22/2019
2/23/2019 0.41
2/24/2019
2/25/2019
2/26/2019
2/27/2019
2/28/2019
3/1/2019
3/2/2019
3/3/2019 M
3/4/2019
3/5/2019
3/6/2019
3/7/2019 T
3/8/2019 T
3/9/2019
3/10/2019
3/11/2019
3/12/2019
3/13/2019
3/14/2019 0.78
3/15/2019
3/16/2019
3/17/2019
3/18/2019
3/19/2019
3/20/2019
3/21/2019
3/22/2019
3/23/2019
3/24/2019
3/25/2019
3/26/2019
3/27/2019
3/28/2019
3/29/2019
3/30/2019 0.28
3/31/2019
Day of YearDaily PrcpMultiday Prcp
4/1/2019
4/2/2019
4/3/2019
4/4/2019
4/5/2019
4/6/2019
4/7/2019
4/8/2019
4/9/2019
4/10/2019
4/11/2019 0.50
4/12/2019
4/13/2019
4/14/2019
4/15/2019
4/16/2019
4/17/2019
4/18/2019 T
4/19/2019
4/20/2019
4/21/2019
4/22/2019 0.15
4/23/2019
4/24/2019
4/25/2019
4/26/2019
4/27/2019
4/28/2019
4/29/2019 0.13
4/30/2019
5/1/2019 T
5/2/2019
5/3/2019
5/4/2019
5/5/2019
5/6/2019
5/7/2019 0.72
5/8/2019 T
5/9/2019
5/10/2019
5/11/2019
5/12/2019
5/13/2019
5/14/2019
5/15/2019
5/16/2019
5/17/2019
5/18/2019 0.05
5/19/2019 0.04
5/20/2019 0.05
5/21/2019 0.86
5/22/2019
5/23/2019
5/24/2019
5/25/2019 T
5/26/2019
5/27/2019
5/28/2019 0.28
5/29/2019 0.13
5/30/2019
5/31/2019
6/1/2019
6/2/2019
6/3/2019
6/4/2019 0.05
6/5/2019
6/6/2019
6/7/2019
6/8/2019
6/9/2019 0.13
6/10/2019
6/11/2019
6/12/2019
6/13/2019
6/14/2019
6/15/2019
6/16/2019 0.13
6/17/2019 T
6/18/2019
6/19/2019 M
6/20/2019
6/21/2019
6/22/2019 0.53
6/23/2019 0.15
6/24/2019
6/25/2019
6/26/2019
6/27/2019
6/28/2019
6/29/2019
6/30/2019
Day of YearDaily PrcpMultiday Prcp
7/1/2019 0.47
7/2/2019 0.10
7/3/2019
7/4/2019
7/5/2019 0.25
7/6/2019
7/7/2019
7/8/2019
7/9/2019
7/10/2019
7/11/2019
7/12/2019
7/13/2019
7/14/2019 0.48
7/15/2019
7/16/2019
7/17/2019 T
7/18/2019
7/19/2019
7/20/2019
7/21/2019 T
7/22/2019 0.32
7/23/2019
7/24/2019
7/25/2019 0.40
7/26/2019
7/27/2019
7/28/2019
7/29/2019
7/30/2019
7/31/2019 T
8/1/2019
8/2/2019 T
8/3/2019
8/4/2019
8/5/2019
8/6/2019
8/7/2019
8/8/2019
8/9/2019
8/10/2019
8/11/2019
8/12/2019
8/13/2019
8/14/2019
8/15/2019
8/16/2019
8/17/2019
8/18/2019
8/19/2019
8/20/2019
8/21/2019
8/22/2019
8/23/2019
8/24/2019
8/25/2019
8/26/2019
8/27/2019
8/28/2019
8/29/2019
8/30/2019
8/31/2019
9/1/2019
9/2/2019
9/3/2019
9/4/2019
9/5/2019
9/6/2019
9/7/2019
9/8/2019
9/9/2019 0.25
9/10/2019
9/11/2019
9/12/2019 0.30
9/13/2019
9/14/2019
9/15/2019
9/16/2019
9/17/2019
9/18/2019
9/19/2019
9/20/2019
9/21/2019
9/22/2019 0.05
9/23/2019
9/24/2019
9/25/2019
9/26/2019
9/27/2019
9/28/2019
9/29/2019
9/30/2019



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/6/2018 7:00 AM 0.23 M M M M
10/8/2018 7:00 AM 0.34 M M M M
10/14/2018 7:00 AM 0.35 3.0 0.35 M M
10/31/2018 7:00 AM 0.21 T M M M {EDIT: Observer reported T for new snowfall with a melted core value of 0.21. Melted core is high for a Trace amount of snow. It appears gauge catch accidentally got entered twice. Changed SWE report of 0.21 to NA until observer can be contacted to verify. CoCoSTAFF DNT}
11/3/2018 7:00 AM T M M M M
11/11/2018 7:00 AM M 1.0 0.11 M M {EDIT: Observer reported 1.00 for new precip. QPE data and surrounding reports of 0.03 to 0.06 indicate this could be a decimal typo. Changed report of 1.00 to NA until observer can be contacted to verify. Submission Time Before EDIT: 11/12/2018 3:16 PM CoCoSTAFF DNT}
11/12/2018 7:00 AM M 3.0 0.15 M M {EDIT: Observer reported 3.00 for new precip. This is high compared to surrounding reports and appears to be a deciaml typo. Changed report of 3.00 to NA until observer can be contacted to verify. Submission Time Before EDIT: 11/12/2018 3:17 PM CoCoSTAFF DNT}
11/17/2018 7:00 AM T M M M M Light freezing drizzle, some light snow
11/18/2018 7:00 AM T M M M M Light drizzle all night
1/12/2019 7:00 AM M 2.9 0.75 M M {EDIT: Observer reported 2.95 for new precip but it appears it was new snowfall depth instead. Changed new precip report of 2.95 to NA until observer can be contacted to verify. Submission Time Before EDIT: 1/12/2019 12:55 PM CoCoSTAFF DNT}
1/28/2019 7:00 AM 0.25 2.0 0.25 M M
2/7/2019 7:00 AM 0.25 5.5 0.25 M M
2/18/2019 7:00 AM T M M M M
2/19/2019 7:00 AM T 1.2 T M M
2/23/2019 7:00 AM 0.41 4.2 0.41 M M
3/3/2019 7:00 AM M 4.5 0.28 M M EDIT: Snowfall also entered as precip. 4.50" precip set to NA pending followup with observer. OST 3/03/2019 10:41 AM -CCR Staff SDH-
3/7/2019 7:00 AM T M M M M
3/8/2019 7:00 AM T M M M M sleet
3/14/2019 7:00 AM 0.78 5.2 0.78 M M
3/30/2019 7:00 AM 0.28 1.2 0.28 M M
4/11/2019 7:00 AM 0.50 2.5 0.50 M M
4/18/2019 7:00 AM T M M M M Heavy thunderstorm about 11pm, trace of rain but lots of lightning and thunder
4/22/2019 7:00 AM 0.15 M M M M
4/29/2019 7:00 AM 0.13 M M M M
5/1/2019 7:00 AM T M M M M
5/7/2019 7:00 AM 0.72 M M M M Heavy rain and hail about 7pm. Short duration but intense.
5/8/2019 7:00 AM T M M M M
5/18/2019 7:00 AM 0.05 M M M M
5/19/2019 7:00 AM 0.04 M M M M
5/20/2019 7:00 AM 0.05 M M M M
5/21/2019 7:00 AM 0.86 3.1 0.86 3.1 0.86 wet, heavy snow. no broken tree limbs yet
5/25/2019 7:00 AM T M M M M
5/28/2019 7:00 AM 0.28 M M M M Heavy thunderstorms overnight
5/29/2019 7:00 AM 0.13 M M M M
6/4/2019 7:00 AM 0.05 M M M M Heavy thunder, not much rain
6/9/2019 7:00 AM 0.13 M M M M
6/16/2019 7:00 AM 0.13 M M M M
6/17/2019 7:00 AM T M M M M
6/19/2019 7:00 AM M M M M M {EDIT: Observer reported 0.85 for new precip. QPE data and surrounding reports of 0.02 to 0.07 indicate this could be a multi-day report. Changed report of 0.85 to NA until observer can be contacted to verify. Submission Time Before EDIT: 6/19/2019 7:43 AM CoCoSTAFF DNT}
6/22/2019 7:00 AM 0.53 M M M M
6/23/2019 7:00 AM 0.15 M M M M
7/1/2019 7:00 AM 0.47 M M M M High winds heavy rain, thunder for 2 hours.
7/2/2019 7:00 AM 0.10 M M M M
7/5/2019 7:00 AM 0.25 M M M M Heavy rain; pea size hail briefly and lots of rolling thunder and lightning
7/14/2019 7:00 AM 0.48 M M M M
7/17/2019 7:00 AM T M M M M
7/21/2019 7:00 AM T M M M M
7/22/2019 7:00 AM 0.32 M M M M
7/25/2019 7:00 AM 0.40 M M M M
7/31/2019 7:00 AM T M M M M
8/2/2019 7:00 AM T M M M M
9/9/2019 7:00 AM 0.25 M M M M
9/12/2019 7:00 AM 0.30 M M M M Heavy thunder and lightning, brief heavy rain about 11pm
9/22/2019 7:00 AM 0.05 M M M 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