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 17 1.05 0.47 1 0.47 1 0.00 0 0 1 0 3.5 1 0
Nov 17 0.79 0.11 1 0.11 1 0.00 0 0 1 0 0.0 0 0
Dec 17 0.61 0.07 3 0.07 3 0.00 0 0 1 2 0.5 1 0
Jan 18 0.42 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 18 0.40 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 18 1.51 0.35 1 0.35 1 0.00 0 0 1 0 3.0 1 1
April 18 1.88 0.63 2 0.63 2 0.00 0 0 2 0 3.0 2 0
May 18 2.28 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 18 1.83 0.98 1 0.98 1 0.00 0 0 1 0 0.0 0 0
July 18 1.57 2.50 2 2.50 2 0.00 0 0 2 0 0.0 0 0
Aug 18 1.89 0.52 2 0.52 2 0.00 0 0 1 1 0.0 0 0
Sept 18 1.00 0.27 1 0.27 1 0.00 0 0 1 0 0.0 0 0
Water Year Totals: 15.23" 5.90" 14 days 5.90" 14 0.00" 0 days 0 11 days 3 days 10.0" 5 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
10/1/2017
10/2/2017 0.47
10/3/2017
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017 M
10/9/2017 M
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017
10/30/2017
10/31/2017
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017
11/6/2017
11/7/2017
11/8/2017
11/9/2017
11/10/2017
11/11/2017
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017 0.11
11/19/2017
11/20/2017
11/21/2017
11/22/2017
11/23/2017
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017
11/29/2017
11/30/2017
12/1/2017
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017
12/17/2017
12/18/2017
12/19/2017
12/20/2017
12/21/2017 0.07
12/22/2017 T
12/23/2017
12/24/2017
12/25/2017
12/26/2017 T
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018 0.35
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018 0.10
4/7/2018
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018 0.53
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018
5/20/2018
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018 0.98
6/20/2018
6/21/2018
6/22/2018
6/23/2018
6/24/2018
6/25/2018
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018
7/24/2018 1.50
7/25/2018
7/26/2018 1.00
7/27/2018
7/28/2018
7/29/2018
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018
8/16/2018
8/17/2018
8/18/2018
8/19/2018 0.52
8/20/2018
8/21/2018
8/22/2018 T
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018 0.27
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/2/2017 7:00 AM 0.47 M M M M
10/8/2017 7:00 AM M M M M M (edit: daily precipitation and new snowfall initially recorded as 1.80" and 2.5" respectively. changed to NA as A. the precip looks high, and B. these data were reported for the day before the storm. observer contacted. PG)
10/9/2017 7:00 AM M 3.5 M M M {EDIT: Observer reported 2.50 of new precip. This report appears high compared to QPE data and surrounding reports of 0.50 to 0.72. This appears to be a typo. Changed report of 2.50 to NA until observer can be contacted to verify. Submission Time Before EDIT: 10/09/2017 7:06 PM CoCoSTAFF DNT}
11/18/2017 7:00 AM 0.11 M M M M
12/21/2017 7:00 AM 0.07 0.5 0.07 M M
12/22/2017 7:00 AM T M M M M
12/26/2017 7:00 AM T M M M M
3/27/2018 7:00 AM 0.35 3.0 M 3.0 M
4/6/2018 7:00 AM 0.10 1.0 M M M
4/21/2018 7:00 AM 0.53 2.0 0.33 M M
6/19/2018 7:00 AM 0.98 M M M M Heavy rain, various sizes of hail up to golf ball size. Lasted maybe 30 minutes
7/24/2018 7:00 AM 1.50 M M M M Heavy rain last evening. Gutters overflowed, some streets temporarily flooded.
7/26/2018 7:00 AM 1.00 M M M M Heavy rain and thunderstorms
8/19/2018 7:00 AM 0.52 M M M M Heavy rain after 10:30pm, short time period
8/22/2018 7:00 AM T M M M M
9/5/2018 7:00 AM 0.27 M M M M Heavy rain and thunder after 1am, intermittenly



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