Station Overview Station Location
Station Number CO-JF-474 Latitude 39.849008
Station Name Arvada 2.7 NE Longitude -105.070586
County Jefferson Elevation (ft) 5447



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 1.08 1.66 30 1.66 30 0.00 0 0 8 2 14.5 5 5
Nov 19 0.91 1.66 30 1.66 30 0.00 0 0 5 2 12.3 5 3
Dec 19 0.61 0.00 5 0.00 5 0.00 0 0 0 0 0.0 0 0
Jan 20 0.44 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 20 0.45 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 20 1.44 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 20 2.09 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 20 2.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 20 1.91 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 20 1.70 0.03 1 0.03 1 0.00 0 0 1 0 0.0 0 0
Aug 20 2.02 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 20 1.08 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 16.10" 3.35" 66 days 3.35" 66 0.00" 0 days 0 14 days 4 days 26.8" 10 days 8 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 0.05
10/2/2019 0.16
10/3/2019 0.00
10/4/2019 0.00
10/5/2019 0.00
10/6/2019 0.00
10/7/2019 0.00
10/8/2019 0.00
10/9/2019 0.00
10/10/2019 0.06
10/11/2019 0.26
10/12/2019 0.00
10/13/2019 0.00
10/14/2019 0.00
10/15/2019 0.00
10/16/2019 0.00
10/17/2019 0.00
10/18/2019 0.00
10/19/2019 0.00
10/20/2019 0.00
10/21/2019 0.00
10/22/2019 0.00
10/23/2019 0.00
10/24/2019 0.43
10/25/2019 0.00
10/26/2019
10/27/2019 T
10/28/2019 0.38
10/29/2019 0.12
10/30/2019 0.20
10/31/2019 T
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 0.00
11/11/2019 0.05
11/12/2019 T
11/13/2019 0.00
11/14/2019 0.00
11/15/2019 0.00
11/16/2019 0.00
11/17/2019 0.00
11/18/2019 0.00
11/19/2019 0.00
11/20/2019 0.00
11/21/2019 0.20
11/22/2019 0.23
11/23/2019 0.00
11/24/2019 0.00
11/25/2019 0.00
11/26/2019 1.14
11/27/2019 T
11/28/2019 0.00
11/29/2019 0.00
11/30/2019 0.04
12/1/2019 0.00
12/2/2019 0.00
12/3/2019 0.00
12/4/2019 0.00
12/5/2019 0.00
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
12/16/2019
12/17/2019
12/18/2019
12/19/2019
12/20/2019
12/21/2019
12/22/2019
12/23/2019
12/24/2019
12/25/2019
12/26/2019
12/27/2019
12/28/2019
12/29/2019
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
2/1/2020
2/2/2020
2/3/2020
2/4/2020
2/5/2020
2/6/2020
2/7/2020
2/8/2020
2/9/2020
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
3/2/2020
3/3/2020
3/4/2020
3/5/2020
3/6/2020
3/7/2020
3/8/2020
3/9/2020
3/10/2020
3/11/2020
3/12/2020
3/13/2020
3/14/2020
3/15/2020
3/16/2020
3/17/2020
3/18/2020
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
4/15/2020
4/16/2020
4/17/2020
4/18/2020
4/19/2020
4/20/2020
4/21/2020
4/22/2020
4/23/2020
4/24/2020
4/25/2020
4/26/2020
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
5/7/2020
5/8/2020
5/9/2020
5/10/2020
5/11/2020
5/12/2020
5/13/2020
5/14/2020
5/15/2020
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
5/26/2020
5/27/2020
5/28/2020
5/29/2020
5/30/2020
5/31/2020
6/1/2020
6/2/2020
6/3/2020
6/4/2020
6/5/2020
6/6/2020
6/7/2020
6/8/2020
6/9/2020
6/10/2020
6/11/2020
6/12/2020
6/13/2020
6/14/2020
6/15/2020
6/16/2020
6/17/2020
6/18/2020
6/19/2020
6/20/2020
6/21/2020
6/22/2020
6/23/2020
6/24/2020
6/25/2020
6/26/2020
6/27/2020
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
7/26/2020
7/27/2020
7/28/2020
7/29/2020 0.03
7/30/2020
7/31/2020
8/1/2020
8/2/2020
8/3/2020
8/4/2020
8/5/2020
8/6/2020
8/7/2020
8/8/2020
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020
8/18/2020
8/19/2020
8/20/2020
8/21/2020
8/22/2020
8/23/2020
8/24/2020
8/25/2020
8/26/2020
8/27/2020
8/28/2020
8/29/2020
8/30/2020
8/31/2020
9/1/2020
9/2/2020
9/3/2020
9/4/2020
9/5/2020
9/6/2020
9/7/2020
9/8/2020
9/9/2020
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 6:55 AM 0.05 0.0 0.00 0.0 0.00 T=50F, Rh=100%, 30.07 overcast/drizzle, light breeze, 0.05" rain
10/2/2019 6:50 AM 0.16 0.0 0.00 0.0 0.00 T=42F, Rh=100%, 30.05, overcast/drizzle, light breeze, 0.16" rain
10/3/2019 6:45 AM 0.00 0.0 M M M T=49F, Rh=67%, 30.32, overcast, light breeze, no precip
10/4/2019 6:50 AM 0.00 0.0 M M M T=41F, Rh=76%, 30.12, clear, calm, no precip
10/5/2019 6:50 AM 0.00 0.0 M M M T=47F, Rh=49%, 30.11, partly cloudy, calm, no precip
10/6/2019 6:50 AM 0.00 0.0 M M M T=46F, Rh=39%, 30.36, cloudy, calm, no precip
10/7/2019 7:04 AM 0.00 0.0 M M M T=32F, Rh=67%, 30.32, clear, calm, no precip
10/8/2019 6:45 AM 0.00 0.0 M M M T=42F, Rh=41%, 29.97, partly cloudy, calm, no precip
10/9/2019 6:50 AM 0.00 0.0 M M M T=42F, Rh=50%, 29.79, partly cloudy, calm, no precip
10/10/2019 6:50 AM 0.06 T T T T T=23F, Rh=91%, 30.15, overcast, calm, trace frozen
10/11/2019 7:00 AM 0.26 2.6 0.26 2.6 0.26 T=17F, Rh=90%, 30.27, clear, calm, 2.6" snow yielded 0.26" liquid
10/12/2019 7:10 AM 0.00 0.0 M M M T=27F, Rh=71%, 30.06, clear, calm, no precip
10/13/2019 7:30 AM 0.00 0.0 M M M T=29F, Rh=61%, 30.04, clear, calm, no precip
10/14/2019 7:10 AM 0.00 0.0 M M M T=34F, Rh=45%, 29.98, clear, calm, no precip
10/15/2019 7:00 AM 0.00 0.0 M M M T=36F, Rh=50%, 30.26, clear, calm, no precip
10/16/2019 7:30 AM 0.00 0.0 M M M T=34F, Rh=66%, 30.19, mostly cloudy, calm, no precip
10/17/2019 6:55 AM 0.00 0.0 M M M T=39F, Rh=43%, 29.94, partly cloudy, calm, no precip
10/18/2019 7:00 AM 0.00 0.0 M M M T=49F, Rh=33%, 29.59, clear, calm, no precip
10/19/2019 7:25 AM 0.00 0.0 M M M T=37F, Rh=40%, 29.92, clear, calm, no precip
10/20/2019 7:00 AM 0.00 0.0 M M M T=40F, Rh=40%, 29.74, cloudy, moderate breeze, no precip
10/21/2019 7:00 AM 0.00 0.0 M M M T=33F, Rh=43%, 29.95, clear, calm, no precip
10/22/2019 7:00 AM 0.00 0.0 M M M T=40F, Rh=41%, 30.16, clear, gentle breeze, no precip
10/23/2019 6:55 AM 0.00 0.0 M M M T=45F, Rh=43%, 30.08, partly cloudy, moderate breeze, no precip
10/24/2019 6:50 AM 0.43 3.6 0.43 3.6 0.43 T=31F, Rh=98%, 30.44"Hg, mostly cloudy, calm, 3.6" snow yielded 0.43" liquid
10/25/2019 7:00 AM 0.00 0.0 M M M T=27F, Rh=99%, 30.33"Hg, clear, calm, no precip
10/27/2019 7:00 AM T T T T T T=25F, Rh=94%, 30.09"Hg, overcast, calm, trace snow
10/28/2019 6:45 AM 0.38 5.0 0.38 5.0 0.38 T=18F, Rh=88%, 30.03"Hg, overcast, calm, 5" snow yielded 0.38" water
10/29/2019 7:00 AM 0.12 1.0 0.12 6.3 M T=18F, Rh=19%, 30.03"Hg, overcast, strong breeze, 1" new snow yielded 0.12" water, 6.3" total depth
10/30/2019 6:45 AM 0.20 2.3 0.20 6.3 M T=8F, Rh=81%, 30.29"Hg, overcast, calm, 2.3" new snow yielded 0.20" water, 6.3" total depth
10/31/2019 7:00 AM T T T M M T=11F, Rh=81%, 30.18"Hg, clear, calm, trace snow
11/1/2019 6:50 AM 0.00 0.0 M M M T=27F, Rh=87%, 30.25, mostly cloudy, calm, no precip
11/2/2019 7:00 AM 0.00 0.0 M M M T=18F, Rh=96%, 30.27"Hg, clear, calm, no precip
11/3/2019 7:20 AM 0.00 0.0 M M M T=36F, Rh=62%, 29.99"Hg, mostly clear, calm, no precip
11/4/2019 7:00 AM 0.00 0.0 M M M T=33F, Rh=67%, 30.08"Hg, mostly clear, calm, no precip
11/5/2019 7:00 AM 0.00 0.0 M M M T=29F, Rh=89%, 30.18"Hg, clear, calm, no precip
11/6/2019 6:40 AM 0.00 0.0 M M M T=28F, Rh=80%, 30.17"Hg, clear, calm, no precip
11/7/2019 7:00 AM 0.00 0.0 M M M T=31F, Rh=87%, 30.44"Hg, overcast, calm, no precip
11/8/2019 6:50 AM 0.00 0.0 M M M T=28F, Rh=90%, 30.27"Hg, clear, calm, no precip
11/9/2019 6:50 AM 0.00 0.0 M M M T=33F, Rh=53%, 30.19"Hg, mostly clear, calm, no precip
11/10/2019 7:00 AM 0.00 0.0 M M M T=36F, Rh=44%, 30.00"Hg, partly cloudy, calm, no precip
11/11/2019 6:50 AM 0.05 1.3 0.05 M M T=15F, Rh=86%, 30.53"Hg, overcast, calm, 1.3" snow yielded 0.05" water.
11/12/2019 6:53 AM T T T M M T=17F, Rh=86%, 30.23"Hg, clear, calm, trace snow
11/13/2019 6:50 AM 0.00 0.0 M M M T=53F, Rh=21%, 29.98"Hg, partly cloudy, light breeze, no precip
11/14/2019 7:00 AM 0.00 0.0 M M M T=33F, Rh=74%, 30.34"Hg, clear, calm, no precip
11/15/2019 6:55 AM 0.00 0.0 M M M T=36F, Rh=69%, 30.18"Hg, overcast, calm, no precip
11/16/2019 7:00 AM 0.00 0.0 M M M T=42F, Rh=48%, 30.05, partly cloudy, calm, no precip
11/17/2019 7:00 AM 0.00 0.0 M M M T=30F, Rh=77%, 30.18"Hg, clear, calm, no precip (it did get cloudy and windy yesterday but nothing happened.)
11/18/2019 7:00 AM 0.00 0.0 M M M
11/19/2019 7:00 AM 0.00 0.0 M M M T=35F, Rh=61%, 29.89"Hg, mostly cloudy, calm, no precip
11/20/2019 7:00 AM 0.00 0.0 M M M T=42F, Rh=50%, 29.69"Hg, cloudy, calm, no precip
11/21/2019 7:10 AM 0.20 0.4 0.20 0.5 0.20 27F, Rh=98%, 30.12"Hg, overcast, calm, 0.4" snow/ice gave 0.2" water (NOTE: snow partially melted then froze solid.)
11/22/2019 6:50 AM 0.23 2.7 0.23 3.0 M T=28F, Rh=98%, 30.05"Hg, overcast, calm, 2.7" new snow yielded 0.23" water. Accumulated depth 3.0" snow/ice
11/23/2019 6:50 AM 0.00 0.0 M M M T=22F, Rh=99%, 30.10"Hg, clear, calm, no precip
11/24/2019 7:00 AM 0.00 0.0 M M M T=39F, Rh=75%, 29.94"Hg, mostly clear, calm, no precip
11/25/2019 7:00 AM 0.00 0.0 M M M T=32F, Rh=52%, 29.78"Hg, mostly clear, calm, no precip
11/26/2019 1:27 PM 1.14 7.6 1.14 7.6 1.14 @13:27 local time, 27F, Rh=79%, 29.68"Hg, overcast, calm, 7.6" snow yielded 1.14" water. Snow started at 15:15 Monday and ended at 12:30 hours local time on Tuesday.
11/27/2019 7:00 AM T T T M M T=8F, Rh=85%, 30.04"Hg, partly cloudy, calm, trace snow since last measurement at 13:27 hours local time yesterday (Tuesday.)
11/28/2019 6:55 AM 0.00 0.0 M M M T=17F, Rh=85%, 29.86"Hg, overcast, calm, no precip
11/29/2019 6:50 AM 0.00 0.0 M M M T=16F, Rh=87%, 29.79"Hg, light fog, calm, no precip
11/30/2019 7:00 AM 0.04 0.3 0.04 M M T=33F, Rh=51% 29.46"Hg, overcast, calm, 0.3" snow yielded 0.04" water
12/1/2019 6:50 AM 0.00 0.0 M M M T=17F, Rh=79%, 30.06"Hg, clear, calm, no precip
12/2/2019 7:00 AM 0.00 0.0 M M M T=22F, Rh=76%, 30.08"Hg, mostly clear, calm, no precip
12/3/2019 6:55 AM 0.00 0.0 M M M T=44F, Rh=45%, 30.06"Hg, clear, light breeze, no precip
12/4/2019 7:00 AM 0.00 0.0 M M M T=31F, Rh=60%, 30.07,"Hg, mostly cloudy, calm, no precip
12/5/2019 6:55 AM 0.00 0.0 M M M T=37F, Rh=62%, 29.90"Hg, partly cloudy, calm, no precip
7/29/2020 7:30 AM 0.03 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