Station Overview Station Location
Station Number CO-JF-256 Latitude 39.8239
Station Name Arvada 5.2 WNW Longitude -105.1823
County Jefferson Elevation (ft) 5636



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 19 1.14 0.62 10 0.62 10 0.00 0 0 1 2 9.9 2 1
Nov 19 1.01 0.41 17 0.41 17 0.00 0 0 2 0 5.8 2 3
Dec 19 0.68 0.05 3 0.05 3 0.00 0 0 1 1 1.1 1 0
Jan 20 0.48 0.03 1 0.03 1 0.00 0 0 1 0 0.1 1 0
Feb 20 0.56 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 2
March 20 1.63 0.10 7 0.10 7 0.00 0 0 1 0 0.0 0 0
April 20 2.22 0.49 9 0.02 3 0.47 6 2 1 0 0.0 0 0
May 20 2.42 1.52 7 1.52 7 0.00 0 0 3 0 0.0 0 0
June 20 2.04 0.75 9 0.75 9 0.00 0 0 1 0 0.0 0 0
July 20 1.61 0.39 2 0.39 2 0.00 0 0 2 0 0.0 0 0
Aug 20 2.02 0.61 28 0.61 28 0.00 0 0 2 0 0.0 0 0
Sept 20 1.18 0.78 5 0.00 2 0.78 3 1 0 0 0.0 0 0
Water Year Totals: 16.99" 5.75" 99 days 4.50" 90 1.25" 9 days 3 15 days 3 days 16.9" 6 days 6 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
10/1/2019 T
10/2/2019
10/3/2019
10/4/2019
10/5/2019 0.00
10/6/2019 0.00
10/7/2019 0.00
10/8/2019
10/9/2019 0.00
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019 0.00
10/15/2019
10/16/2019
10/17/2019
10/18/2019
10/19/2019
10/20/2019 0.00
10/21/2019
10/22/2019
10/23/2019
10/24/2019 0.62
10/25/2019 0.00
10/26/2019
10/27/2019 T
10/28/2019 M
10/29/2019
10/30/2019
10/31/2019
11/1/2019 0.00
11/2/2019 0.00
11/3/2019 0.00
11/4/2019 0.00
11/5/2019 0.00
11/6/2019 0.00
11/7/2019 0.00
11/8/2019 0.00
11/9/2019 0.00
11/10/2019
11/11/2019 0.09
11/12/2019
11/13/2019 0.00
11/14/2019 0.00
11/15/2019 0.00
11/16/2019
11/17/2019
11/18/2019
11/19/2019
11/20/2019 0.00
11/21/2019
11/22/2019 0.32
11/23/2019
11/24/2019
11/25/2019 0.00
11/26/2019 0.00
11/27/2019
11/28/2019 M
11/29/2019
11/30/2019
12/1/2019
12/2/2019
12/3/2019
12/4/2019
12/5/2019
12/6/2019
12/7/2019
12/8/2019
12/9/2019
12/10/2019
12/11/2019
12/12/2019
12/13/2019
12/14/2019
12/15/2019 T
12/16/2019
12/17/2019
12/18/2019
12/19/2019
12/20/2019
12/21/2019
12/22/2019 0.00
12/23/2019
12/24/2019
12/25/2019
12/26/2019
12/27/2019
12/28/2019
12/29/2019 0.05
12/30/2019
12/31/2019
Day of YearDaily PrcpMultiday Prcp
1/1/2020
1/2/2020
1/3/2020
1/4/2020
1/5/2020
1/6/2020
1/7/2020
1/8/2020
1/9/2020
1/10/2020
1/11/2020
1/12/2020
1/13/2020
1/14/2020
1/15/2020
1/16/2020
1/17/2020
1/18/2020
1/19/2020
1/20/2020
1/21/2020
1/22/2020
1/23/2020
1/24/2020
1/25/2020
1/26/2020
1/27/2020
1/28/2020
1/29/2020
1/30/2020
1/31/2020 0.03
2/1/2020
2/2/2020
2/3/2020
2/4/2020 0.00
2/5/2020
2/6/2020
2/7/2020
2/8/2020
2/9/2020 M
2/10/2020
2/11/2020
2/12/2020
2/13/2020
2/14/2020
2/15/2020
2/16/2020
2/17/2020
2/18/2020
2/19/2020
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020
2/26/2020
2/27/2020
2/28/2020
2/29/2020
3/1/2020 0.00
3/2/2020
3/3/2020
3/4/2020
3/5/2020
3/6/2020 0.00
3/7/2020 0.00
3/8/2020 0.00
3/9/2020 0.10
3/10/2020 0.00
3/11/2020
3/12/2020
3/13/2020
3/14/2020
3/15/2020
3/16/2020
3/17/2020
3/18/2020 0.00
3/19/2020
3/20/2020
3/21/2020
3/22/2020
3/23/2020
3/24/2020
3/25/2020
3/26/2020
3/27/2020
3/28/2020
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020
4/7/2020
4/8/2020
4/9/2020
4/10/2020
4/11/2020 **
4/12/2020 **
4/13/2020 **
4/14/2020 0.47
4/15/2020 0.00
4/16/2020 **
4/17/2020 M
4/18/2020
4/19/2020
4/20/2020
4/21/2020
4/22/2020
4/23/2020 0.02
4/24/2020
4/25/2020
4/26/2020 0.00
4/27/2020
4/28/2020
4/29/2020
4/30/2020
5/1/2020
5/2/2020
5/3/2020
5/4/2020
5/5/2020
5/6/2020 0.00
5/7/2020 0.00
5/8/2020
5/9/2020
5/10/2020
5/11/2020
5/12/2020
5/13/2020
5/14/2020
5/15/2020 0.34
5/16/2020
5/17/2020
5/18/2020
5/19/2020
5/20/2020
5/21/2020
5/22/2020
5/23/2020
5/24/2020
5/25/2020 0.93
5/26/2020 0.00
5/27/2020 0.00
5/28/2020
5/29/2020
5/30/2020
5/31/2020 0.25
6/1/2020
6/2/2020
6/3/2020
6/4/2020
6/5/2020
6/6/2020
6/7/2020
6/8/2020 M
6/9/2020 0.00
6/10/2020 0.00
6/11/2020
6/12/2020
6/13/2020
6/14/2020 0.00
6/15/2020 0.00
6/16/2020
6/17/2020 0.00
6/18/2020
6/19/2020 0.75
6/20/2020
6/21/2020
6/22/2020 0.00
6/23/2020 0.00
6/24/2020
6/25/2020
6/26/2020
6/27/2020 0.00
6/28/2020
6/29/2020
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020
7/2/2020
7/3/2020
7/4/2020
7/5/2020
7/6/2020
7/7/2020
7/8/2020
7/9/2020
7/10/2020
7/11/2020
7/12/2020
7/13/2020
7/14/2020
7/15/2020
7/16/2020
7/17/2020
7/18/2020
7/19/2020
7/20/2020
7/21/2020
7/22/2020
7/23/2020
7/24/2020
7/25/2020 0.22
7/26/2020 0.17
7/27/2020
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020 0.31
8/2/2020
8/3/2020
8/4/2020 0.00
8/5/2020 0.00
8/6/2020 0.00
8/7/2020 0.00
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.00
8/11/2020 0.00
8/12/2020 0.00
8/13/2020 0.00
8/14/2020 0.00
8/15/2020 0.00
8/16/2020 0.00
8/17/2020 0.00
8/18/2020 0.00
8/19/2020 0.00
8/20/2020 0.00
8/21/2020 0.00
8/22/2020 0.00
8/23/2020 0.00
8/24/2020 0.00
8/25/2020 0.00
8/26/2020 0.00
8/27/2020 0.00
8/28/2020 0.00
8/29/2020 0.30
8/30/2020 0.00
8/31/2020
9/1/2020
9/2/2020 0.00
9/3/2020
9/4/2020 0.00
9/5/2020
9/6/2020
9/7/2020 **
9/8/2020 **
9/9/2020 0.78
9/10/2020
9/11/2020
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
9/26/2020
9/27/2020
9/28/2020
9/29/2020
9/30/2020



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2019 7:00 AM T M M M M
10/5/2019 7:00 AM 0.00 0.0 M M M
10/6/2019 7:00 AM 0.00 0.0 M M M
10/7/2019 9:45 AM 0.00 0.0 M M M
10/9/2019 7:00 AM 0.00 0.0 M M M
10/14/2019 7:00 AM 0.00 0.0 M M M
10/20/2019 7:00 AM 0.00 0.0 M M M
10/24/2019 11:30 AM 0.62 4.5 0.64 M M
10/25/2019 11:13 AM 0.00 0.0 M 3.5 0.75
10/27/2019 7:00 AM T M M M M SNOW BEGAN TO FALL VERY LIGHTLY About 6:15 a.m.
10/28/2019 9:00 AM M 5.4 0.45 M M SNOWED LIGHTLY THROUGHUOT MOST OF THE DAY YESTERDAY BUT STARTED SNSSOWING HEAVILY ABOUT 8:30 PM, THAT CONTRIBUTED THE MAJORITY OF THE ACCUMULATION REPORTED HERE.
11/1/2019 7:00 AM 0.00 0.0 M 4.0 0.66
11/2/2019 7:00 AM 0.00 0.0 M M M
11/3/2019 7:00 AM 0.00 0.0 M M M
11/4/2019 7:00 AM 0.00 0.0 M M M
11/5/2019 7:00 AM 0.00 0.0 M M M
11/6/2019 7:00 AM 0.00 0.0 M M M
11/7/2019 7:00 AM 0.00 0.0 M M M
11/8/2019 7:00 AM 0.00 0.0 M M M
11/9/2019 7:00 AM 0.00 0.0 M M M
11/11/2019 2:00 PM 0.09 2.0 0.08 M M
11/13/2019 7:00 AM 0.00 0.0 M M M
11/14/2019 7:00 AM 0.00 0.0 M M M
11/15/2019 7:00 AM 0.00 0.0 M M M
11/20/2019 7:00 AM 0.00 0.0 M M M
11/22/2019 11:45 AM 0.32 3.8 0.32 M M
11/25/2019 7:00 AM 0.00 0.0 M M M
11/26/2019 12:30 PM 0.00 0.0 M 16.0 1.26
11/28/2019 11:00 AM M M M 13.5 1.37
12/15/2019 7:00 AM T M M M M
12/22/2019 7:00 AM 0.00 0.0 M M M
12/29/2019 9:00 AM 0.05 1.1 0.05 M M
1/31/2020 7:00 AM 0.03 0.1 M M M
2/4/2020 10:00 AM 0.00 0.0 M 6.0 0.31
2/9/2020 7:00 AM M M M 8.5 0.97 {EDIT: Observer reported 0.00 for new precip/new snowfall. QPE data and surrounding reports of snow indicate this could be a typo. Changed reports of 0.00's to NA until observer can be contacted to verify. Submission Time Before EDIT: 2/12/2020 2:22 PM CoCoSTAFF DNT}
3/1/2020 7:00 AM 0.00 0.0 M M M
3/6/2020 7:00 AM 0.00 0.0 M M M
3/7/2020 7:00 AM 0.00 0.0 M M M
3/8/2020 7:00 AM 0.00 0.0 M M M
3/9/2020 7:00 AM 0.10 M M M M
3/10/2020 7:00 AM 0.00 0.0 M M M
3/18/2020 7:00 AM 0.00 0.0 M M M
4/15/2020 7:00 AM 0.00 0.0 M M M
4/23/2020 7:00 AM 0.02 M M M M Afternoon shower
4/26/2020 7:00 AM 0.00 0.0 M M M
5/6/2020 7:00 AM 0.00 0.0 M M M T
5/7/2020 7:00 AM 0.00 0.0 M M M
5/15/2020 7:00 AM 0.34 M M M M This is total of rain and melted hail that fell for the past 24 hours. See picture I sent of hai yesterday just after it fell. Sent to info@cocorahs.org
5/25/2020 7:00 AM 0.93 M M M M
5/26/2020 7:00 AM 0.00 0.0 M M M
5/27/2020 7:00 AM 0.00 0.0 M M M
5/31/2020 9:00 AM 0.25 M M M M
6/8/2020 9:30 AM M M M M M {EDIT: Observer reported 0.41 for new precip. QPE data and surrounding reports of 0.00's indicate this could be a date error or a multi-day report. Changed report of 0.41 to NA until observer can be contacted to verify. Submission Time Before EDIT: 6/10/2020 5:24 PM CoCoSTAFF DNT}
6/9/2020 7:00 AM 0.00 0.0 M M M
6/10/2020 7:00 AM 0.00 0.0 M M M
6/14/2020 7:00 AM 0.00 0.0 M M M
6/15/2020 7:00 AM 0.00 0.0 M M M
6/17/2020 7:00 AM 0.00 0.0 M M M
6/19/2020 7:00 AM 0.75 M M M M
6/22/2020 7:00 AM 0.00 0.0 M M M
6/23/2020 7:00 AM 0.00 0.0 M M M
6/27/2020 7:00 AM 0.00 0.0 M M M
7/25/2020 9:00 AM 0.22 M M M M
7/26/2020 9:00 AM 0.17 M M M M
8/1/2020 9:30 AM 0.31 M M M M
8/4/2020 7:00 AM 0.00 0.0 M M M
8/5/2020 7:00 AM 0.00 0.0 M M M
8/6/2020 7:00 AM 0.00 0.0 M M M
8/7/2020 7:00 AM 0.00 0.0 M M M
8/8/2020 7:00 AM 0.00 0.0 M M M
8/9/2020 7:00 AM 0.00 0.0 M M M
8/10/2020 7:00 AM 0.00 0.0 M M M
8/11/2020 7:00 AM 0.00 0.0 M M M
8/12/2020 7:00 AM 0.00 0.0 M M M
8/13/2020 7:00 AM 0.00 0.0 M M M
8/14/2020 7:00 AM 0.00 0.0 M M M
8/15/2020 7:00 AM 0.00 0.0 M M M
8/16/2020 7:00 AM 0.00 0.0 M M M
8/17/2020 7:00 AM 0.00 0.0 M M M
8/18/2020 7:00 AM 0.00 0.0 M M M
8/19/2020 7:00 AM 0.00 0.0 M M M
8/20/2020 7:00 AM 0.00 0.0 M M M
8/21/2020 7:00 AM 0.00 0.0 M M M
8/22/2020 7:00 AM 0.00 0.0 M M M
8/23/2020 7:00 AM 0.00 0.0 M M M
8/24/2020 7:00 AM 0.00 0.0 M M M
8/25/2020 7:00 AM 0.00 0.0 M M M
8/26/2020 7:00 AM 0.00 0.0 M M M
8/27/2020 7:00 AM 0.00 0.0 M M M
8/28/2020 7:00 AM 0.00 0.0 M M M
8/29/2020 2:00 PM 0.30 M M M M
8/30/2020 7:00 AM 0.00 0.0 M M M
9/2/2020 7:00 AM 0.00 0.0 M M M
9/4/2020 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
4/11/2020 4/14/2020 11:00 AM 4 0.47 3.9 M
4/16/2020 4/17/2020 8:30 AM 2 M 7.8 0.78
9/7/2020 9/09/2020 3:00 PM 3 0.78 M M RAINN AND SNOW MIXED STARTING ON SEPT 8TH



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
4/24/2020 11:59 AM I sent a photo to info@cocorahs I don't have hail pad yet but hope to soon if I get supplies. Let me know if this photo is usable. It is the first hail this year at my home! The rain that accompanied the hail started and stopped at the same times.. Thanks. Best regards 1/4" Pea Size NA Rice Soft|White Ice 6 1min no damage Continuous False Same time as rain Same time as smaller hail 10-20