Station Overview Station Location
Station Number CO-BO-159 Latitude 40.0395
Station Name Boulder 3.6 WNW Longitude -105.3275
County Boulder Elevation (ft) 6906



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 15 1.46 1.88 24 1.88 24 0.00 0 0 9 0 0.0 0 0
Nov 15 1.39 1.44 29 0.67 6 0.77 23 1 1 1 3.0 1 2
Dec 15 0.93 0.84 18 0.84 18 0.00 0 0 2 0 13.2 2 13
Jan 16 0.79 0.16 9 0.16 9 0.00 0 0 1 0 1.3 1 8
Feb 16 0.91 1.04 4 1.04 4 0.00 0 0 3 0 21.0 3 3
March 16 2.06 1.84 4 1.84 4 0.00 0 0 1 0 19.0 1 3
April 16 2.78 0.32 7 0.32 5 0.00 2 1 2 0 8.9 3 4
May 16 3.08 1.68 5 1.68 5 0.00 0 0 4 0 0.0 0 0
June 16 2.72 1.95 10 1.95 10 0.00 0 0 9 0 0.0 0 0
July 16 1.92 0.81 5 0.81 5 0.00 0 0 5 0 0.0 0 0
Aug 16 1.93 1.61 12 1.59 10 0.02 2 1 9 0 0.0 0 0
Sept 16 1.74 0.25 3 0.25 3 0.00 0 0 2 0 0.0 0 0
Water Year Totals: 21.71" 13.82" 130 days 13.03" 103 0.79" 27 days 3 48 days 1 days 66.4" 11 days 33 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
10/1/2015 0.00
10/2/2015 0.00
10/3/2015 0.09
10/4/2015 0.17
10/5/2015
10/6/2015 0.04
10/7/2015 0.14
10/8/2015 0.00
10/9/2015 0.00
10/10/2015
10/11/2015 0.00
10/12/2015
10/13/2015
10/14/2015
10/15/2015 0.00
10/16/2015
10/17/2015 0.00
10/18/2015 0.00
10/19/2015 0.00
10/20/2015 0.05
10/21/2015 0.83
10/22/2015 0.49
10/23/2015
10/24/2015 0.04
10/25/2015 0.00
10/26/2015 0.00
10/27/2015 0.00
10/28/2015 0.00
10/29/2015 0.00
10/30/2015 0.00
10/31/2015 0.03
11/1/2015 0.00
11/2/2015
11/3/2015 0.00
11/4/2015 0.00
11/5/2015 0.67
11/6/2015 T
11/7/2015 0.00
11/8/2015 **
11/9/2015 **
11/10/2015 **
11/11/2015 **
11/12/2015 **
11/13/2015 **
11/14/2015 **
11/15/2015 **
11/16/2015 **
11/17/2015 **
11/18/2015 **
11/19/2015 **
11/20/2015 **
11/21/2015 **
11/22/2015 **
11/23/2015 **
11/24/2015 **
11/25/2015 **
11/26/2015 **
11/27/2015 **
11/28/2015 **
11/29/2015 **
11/30/2015 0.77
12/1/2015
12/2/2015
12/3/2015
12/4/2015 0.00
12/5/2015 0.00
12/6/2015
12/7/2015 0.00
12/8/2015 0.00
12/9/2015
12/10/2015
12/11/2015 0.00
12/12/2015 0.07
12/13/2015
12/14/2015 0.00
12/15/2015 0.77
12/16/2015 0.00
12/17/2015 0.00
12/18/2015 0.00
12/19/2015 0.00
12/20/2015 0.00
12/21/2015 0.00
12/22/2015
12/23/2015
12/24/2015 0.00
12/25/2015
12/26/2015
12/27/2015
12/28/2015
12/29/2015 0.00
12/30/2015 0.00
12/31/2015 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2016 0.00
1/2/2016 0.00
1/3/2016 0.00
1/4/2016
1/5/2016 0.00
1/6/2016
1/7/2016 0.00
1/8/2016
1/9/2016
1/10/2016
1/11/2016 0.00
1/12/2016 0.00
1/13/2016
1/14/2016
1/15/2016
1/16/2016
1/17/2016
1/18/2016
1/19/2016
1/20/2016
1/21/2016
1/22/2016
1/23/2016
1/24/2016
1/25/2016
1/26/2016 0.00
1/27/2016
1/28/2016
1/29/2016
1/30/2016
1/31/2016 0.16
2/1/2016 0.20
2/2/2016 0.77
2/3/2016 0.07
2/4/2016
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/2016
2/12/2016
2/13/2016
2/14/2016
2/15/2016
2/16/2016
2/17/2016
2/18/2016
2/19/2016
2/20/2016
2/21/2016 0.00
2/22/2016
2/23/2016
2/24/2016
2/25/2016
2/26/2016
2/27/2016
2/28/2016
2/29/2016
3/1/2016
3/2/2016
3/3/2016
3/4/2016 0.00
3/5/2016
3/6/2016
3/7/2016
3/8/2016
3/9/2016
3/10/2016
3/11/2016
3/12/2016
3/13/2016
3/14/2016
3/15/2016
3/16/2016
3/17/2016
3/18/2016
3/19/2016
3/20/2016
3/21/2016
3/22/2016
3/23/2016
3/24/2016 1.84
3/25/2016
3/26/2016
3/27/2016 0.00
3/28/2016
3/29/2016
3/30/2016 0.00
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016
4/2/2016
4/3/2016
4/4/2016
4/5/2016
4/6/2016
4/7/2016
4/8/2016
4/9/2016
4/10/2016
4/11/2016
4/12/2016
4/13/2016
4/14/2016
4/15/2016
4/16/2016 **
4/17/2016 M
4/18/2016 0.25
4/19/2016 0.00
4/20/2016
4/21/2016 0.00
4/22/2016
4/23/2016
4/24/2016
4/25/2016 0.00
4/26/2016 0.07
4/27/2016
4/28/2016
4/29/2016 M
4/30/2016
5/1/2016
5/2/2016
5/3/2016
5/4/2016
5/5/2016
5/6/2016
5/7/2016
5/8/2016 0.67
5/9/2016 0.26
5/10/2016
5/11/2016
5/12/2016
5/13/2016
5/14/2016
5/15/2016
5/16/2016
5/17/2016 0.59
5/18/2016 0.00
5/19/2016
5/20/2016
5/21/2016
5/22/2016
5/23/2016
5/24/2016
5/25/2016
5/26/2016
5/27/2016
5/28/2016 0.16
5/29/2016
5/30/2016
5/31/2016
6/1/2016 0.49
6/2/2016
6/3/2016
6/4/2016
6/5/2016
6/6/2016
6/7/2016 0.21
6/8/2016 0.01
6/9/2016 0.02
6/10/2016 0.76
6/11/2016
6/12/2016
6/13/2016 0.09
6/14/2016
6/15/2016
6/16/2016
6/17/2016 0.00
6/18/2016
6/19/2016
6/20/2016
6/21/2016
6/22/2016
6/23/2016
6/24/2016 0.03
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016 0.24
6/30/2016 0.10
Day of YearDaily PrcpMultiday Prcp
7/1/2016 0.03
7/2/2016
7/3/2016
7/4/2016 0.20
7/5/2016
7/6/2016
7/7/2016
7/8/2016
7/9/2016
7/10/2016
7/11/2016
7/12/2016
7/13/2016
7/14/2016
7/15/2016
7/16/2016
7/17/2016
7/18/2016
7/19/2016 0.32
7/20/2016 0.19
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016 0.07
7/26/2016
7/27/2016
7/28/2016
7/29/2016
7/30/2016
7/31/2016
8/1/2016
8/2/2016
8/3/2016 0.00
8/4/2016
8/5/2016 0.04
8/6/2016
8/7/2016 0.04
8/8/2016
8/9/2016
8/10/2016
8/11/2016
8/12/2016
8/13/2016
8/14/2016
8/15/2016
8/16/2016
8/17/2016 0.33
8/18/2016
8/19/2016 0.08
8/20/2016 0.36
8/21/2016
8/22/2016
8/23/2016
8/24/2016
8/25/2016 0.13
8/26/2016 0.08
8/27/2016
8/28/2016 **
8/29/2016 0.02
8/30/2016 0.36
8/31/2016 0.17
9/1/2016
9/2/2016 0.03
9/3/2016
9/4/2016 0.22
9/5/2016
9/6/2016
9/7/2016
9/8/2016
9/9/2016
9/10/2016
9/11/2016
9/12/2016 0.00
9/13/2016
9/14/2016
9/15/2016
9/16/2016
9/17/2016
9/18/2016
9/19/2016
9/20/2016
9/21/2016
9/22/2016
9/23/2016
9/24/2016
9/25/2016
9/26/2016
9/27/2016
9/28/2016
9/29/2016
9/30/2016



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2015 7:00 AM 0.00 0.0 M M M
10/2/2015 7:00 AM 0.00 0.0 M M M
10/3/2015 7:00 AM 0.09 M M M M
10/4/2015 7:00 AM 0.17 M M M M
10/6/2015 7:00 AM 0.04 M M M M
10/7/2015 7:00 AM 0.14 M M M M
10/8/2015 7:00 AM 0.00 0.0 M M M
10/9/2015 7:00 AM 0.00 0.0 M M M
10/11/2015 7:00 AM 0.00 0.0 M M M
10/15/2015 7:00 AM 0.00 0.0 M M M
10/17/2015 7:00 AM 0.00 0.0 M M M
10/18/2015 7:00 AM 0.00 0.0 M M M
10/19/2015 7:00 AM 0.00 0.0 M M M
10/20/2015 7:00 AM 0.05 M M M M
10/21/2015 7:00 AM 0.83 M M M M
10/22/2015 8:30 AM 0.49 M M M M
10/24/2015 7:00 AM 0.04 M M M M
10/25/2015 7:00 AM 0.00 0.0 M M M
10/26/2015 7:00 AM 0.00 0.0 M M M
10/27/2015 7:00 AM 0.00 0.0 M M M
10/28/2015 7:00 AM 0.00 0.0 M M M
10/29/2015 7:00 AM 0.00 0.0 M M M
10/30/2015 7:00 AM 0.00 0.0 M M M
10/31/2015 7:00 AM 0.03 M M M M
11/1/2015 7:00 AM 0.00 0.0 M M M
11/3/2015 7:00 AM 0.00 0.0 M M M
11/4/2015 7:00 AM 0.00 0.0 M M M
11/5/2015 7:00 AM 0.67 3.0 M 3.0 M
11/6/2015 7:00 AM T 0.0 M 1.0 M
11/7/2015 7:00 AM 0.00 0.0 M M M
12/4/2015 7:00 AM 0.00 0.0 M M M
12/5/2015 7:00 AM 0.00 0.0 M M M
12/7/2015 7:00 AM 0.00 0.0 M M M
12/8/2015 7:00 AM 0.00 0.0 M M M
12/11/2015 7:00 AM 0.00 0.0 M M M
12/12/2015 8:20 AM 0.07 0.7 M 0.7 M
12/14/2015 7:00 AM 0.00 0.0 M 1.5 M
12/15/2015 1:00 PM 0.77 12.5 M 13.0 M Maximum snowfall between 1:00 AM and 9:00 AM
12/16/2015 7:00 AM 0.00 0.0 M 10.2 M
12/17/2015 7:00 AM 0.00 0.0 M 8.5 M
12/18/2015 7:00 AM 0.00 0.0 M 7.5 M
12/19/2015 7:00 AM 0.00 0.0 M 6.0 M
12/20/2015 7:00 AM 0.00 0.0 M 4.5 M
12/21/2015 7:00 AM 0.00 0.0 M 3.5 M
12/24/2015 7:00 AM 0.00 0.0 M 0.5 M
12/29/2015 7:00 AM 0.00 0.0 M 4.0 M
12/30/2015 7:00 AM 0.00 0.0 M 4.0 M
12/31/2015 7:00 AM 0.00 0.0 M 4.0 M
1/1/2016 7:00 AM 0.00 0.0 M 3.5 M
1/2/2016 7:00 AM 0.00 0.0 M 2.7 M
1/3/2016 7:00 AM 0.00 0.0 M 2.5 M
1/5/2016 7:00 AM 0.00 0.0 M 2.2 M
1/7/2016 7:00 AM 0.00 0.0 M 2.0 M
1/11/2016 7:00 AM 0.00 0.0 M 4.0 M
1/12/2016 7:00 AM 0.00 0.0 M 3.0 M
1/26/2016 7:00 AM 0.00 0.0 M M M
1/31/2016 7:00 AM 0.16 1.3 M 1.3 0.16
2/1/2016 8:30 AM 0.20 2.5 M 3.6 M
2/2/2016 8:00 AM 0.77 17.5 M 18.2 M A lot of snow in the rain gauge was lost as it overflowed some time in the middle of the night.
2/3/2016 7:00 AM 0.07 1.0 M 14.5 M Wind compacted snow pack on ground.
2/21/2016 7:00 AM 0.00 0.0 M M M
3/4/2016 7:00 AM 0.00 0.0 M M M
3/24/2016 7:00 AM 1.84 19.0 M 19.0 M
3/27/2016 7:00 AM 0.00 0.0 M 11.0 M
3/30/2016 7:00 AM 0.00 0.0 M 3.0 0.05
4/18/2016 8:00 AM 0.25 7.0 M 17.0 M
4/19/2016 7:00 AM 0.00 0.0 M 13.0 M
4/21/2016 7:00 AM 0.00 0.0 M 5.5 M
4/25/2016 7:00 AM 0.00 0.0 M M M
4/26/2016 7:00 AM 0.07 0.3 M 0.3 M A neighbor reported major lightning in the middle of the night, most of which appeared to be horizontal.
4/29/2016 7:00 AM M 1.6 0.35 M M
5/8/2016 7:00 AM 0.67 M M M M
5/9/2016 7:00 AM 0.26 M M M M
5/17/2016 7:00 AM 0.59 M M M M
5/18/2016 7:00 AM 0.00 0.0 M M M
5/28/2016 7:00 AM 0.16 M M M M
6/1/2016 7:00 AM 0.49 M M M M
6/7/2016 7:00 AM 0.21 M M M M
6/8/2016 7:00 AM 0.01 M M M M
6/9/2016 7:00 AM 0.02 M M M M
6/10/2016 7:00 AM 0.76 M M M M Some small hail accompanied this storm, initially smaller than pea-sized and then increasing up to 1/4".Total hail at our house was minimal, but friends about 2 miles further up the canyon had a lot of hail on their decks.
6/13/2016 6:30 AM 0.09 M M M M
6/17/2016 7:00 AM 0.00 0.0 M M M
6/24/2016 7:00 AM 0.03 M M M M
6/29/2016 7:00 AM 0.24 M M M M
6/30/2016 7:00 AM 0.10 M M M M
7/1/2016 7:00 AM 0.03 M M M M
7/4/2016 7:00 AM 0.20 M M M M Raisin sized hail for 15 minutes in middle of the 30 minute rain. 3;00-3:30 PM
7/19/2016 7:00 AM 0.32 M M M M No hail.
7/20/2016 7:00 AM 0.19 M M M M No hail here (6900 ft elevation but a lot of small hail 1 mile further up the road.
7/25/2016 7:00 AM 0.07 M M M M
8/3/2016 7:00 AM 0.00 0.0 M M M
8/5/2016 7:00 AM 0.04 M M M M
8/7/2016 7:00 AM 0.04 M M M M
8/17/2016 7:00 AM 0.33 M M M M No hail.
8/19/2016 7:00 AM 0.08 M M M M
8/20/2016 7:00 AM 0.36 M M M M
8/25/2016 7:00 AM 0.13 M M M M
8/26/2016 7:00 AM 0.08 M M M M
8/30/2016 7:00 AM 0.36 M M M M
8/31/2016 7:00 AM 0.17 M M M M
9/2/2016 7:00 AM 0.03 M M M M Lots of lightning and thunder
9/4/2016 7:00 AM 0.22 M M M M 0.19" fell in the bigger storm between 2:15 and 2:45pm. The remaining 0.03" fell in two light rains at 6:40pm and 9:30pm.
9/12/2016 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
11/8/2015 11/30/2015 7:00 AM 23 0.77 M 3.00
4/16/2016 4/17/2016 8:00 AM 2 M 24.0 2.05 Snow started on 4/15 @ 4:00pm, changed to rain about 6:30pm, stopped, then started to snow about 9:00pm and continued until about noon on 4/17. I measured 9" of new snow and 0.81" water at 11:00am on 4/16, then an additional 6.5" of new snow and 0.56" water at 5:30pm on 4/16, and an additional 16" of new snow and 0.68" water at 8:00am on 4/17. The snow collecting tube overflowed during the night so the water reading on 4/17 is low by an unknown amount. {EDIT: Observer reported 31.5 of new precip. This appears to be a decimal typo, probably meant 3.15. Changed report of 31.5 to NA until observer can be contacted to verify. Submission Time Before EDIT: 4/17/2016 6:20 PM -DNT}
8/28/2016 8/29/2016 1:00 PM 2 0.02 M M



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