Station Overview Station Location
Station Number CO-BO-482 Latitude 40.036253
Station Name Boulder 4.5 W Longitude -105.335719
County Boulder Elevation (ft) 6515



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 1.43 1.96 14 1.96 14 0.00 0 0 10 2 10.6 2 2
Nov 18 1.32 0.63 12 0.62 4 0.01 8 1 2 0 11.6 1 2
Dec 18 0.92 0.05 10 0.05 10 0.00 0 0 1 6 0.4 1 2
Jan 19 0.76 0.90 12 0.90 12 0.00 0 0 4 1 12.4 4 7
Feb 19 0.87 0.48 21 0.37 17 0.11 4 1 4 7 6.8 5 4
March 19 2.02 2.48 14 2.48 14 0.00 0 0 9 1 18.1 6 6
April 19 2.74 1.08 13 1.08 13 0.00 0 0 6 2 3.6 1 0
May 19 3.06 3.98 20 3.98 20 0.00 0 0 17 3 10.4 5 2
June 19 2.58 2.56 19 2.41 16 0.15 3 1 9 2 0.0 0 0
July 19 1.90 1.78 22 1.17 13 0.61 9 2 8 2 0.0 0 0
Aug 19 1.95 0.45 14 0.45 14 0.00 0 0 8 2 0.0 0 0
Sept 19 1.73 0.88 15 0.88 15 0.00 0 0 6 1 0.0 0 0
Water Year Totals: 21.28" 17.23" 186 days 16.35" 162 0.88" 24 days 5 84 days 29 days 73.9" 25 days 25 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 0.00
10/2/2018 0.01
10/3/2018 0.00
10/4/2018 0.03
10/5/2018 0.17
10/6/2018 0.15
10/7/2018 0.02
10/8/2018 0.30
10/9/2018 0.18
10/10/2018 0.24
10/11/2018 0.18
10/12/2018 T
10/13/2018
10/14/2018 0.68
10/15/2018
10/16/2018
10/17/2018
10/18/2018
10/19/2018 T
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
11/1/2018 **
11/2/2018 **
11/3/2018 **
11/4/2018 **
11/5/2018 **
11/6/2018 **
11/7/2018 **
11/8/2018 0.01
11/9/2018 0.00
11/10/2018 0.00
11/11/2018 0.52
11/12/2018 0.10
11/13/2018
11/14/2018
11/15/2018
11/16/2018
11/17/2018
11/18/2018
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 0.05
12/7/2018
12/8/2018 0.00
12/9/2018 0.00
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 T
12/20/2018 T
12/21/2018
12/22/2018 T
12/23/2018
12/24/2018
12/25/2018
12/26/2018
12/27/2018 T
12/28/2018 T
12/29/2018
12/30/2018 0.00
12/31/2018 T
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.07
1/2/2019 0.00
1/3/2019 0.00
1/4/2019 0.00
1/5/2019
1/6/2019
1/7/2019 0.00
1/8/2019 T
1/9/2019
1/10/2019
1/11/2019 0.14
1/12/2019 0.51
1/13/2019 0.00
1/14/2019 0.00
1/15/2019
1/16/2019
1/17/2019
1/18/2019
1/19/2019 0.18
1/20/2019
1/21/2019 0.00
1/22/2019
1/23/2019
1/24/2019
1/25/2019
1/26/2019
1/27/2019
1/28/2019
1/29/2019
1/30/2019
1/31/2019
2/1/2019
2/2/2019
2/3/2019
2/4/2019 T
2/5/2019
2/6/2019 T
2/7/2019 0.29
2/8/2019 0.00
2/9/2019 0.00
2/10/2019 T
2/11/2019 0.00
2/12/2019 0.00
2/13/2019
2/14/2019
2/15/2019 0.02
2/16/2019 T
2/17/2019 T
2/18/2019 0.03
2/19/2019 T
2/20/2019 0.03
2/21/2019 0.00
2/22/2019 **
2/23/2019 **
2/24/2019 **
2/25/2019 0.11
2/26/2019 0.00
2/27/2019
2/28/2019 T
3/1/2019 0.00
3/2/2019 0.11
3/3/2019 0.40
3/4/2019 0.07
3/5/2019 0.00
3/6/2019 0.00
3/7/2019 0.09
3/8/2019
3/9/2019
3/10/2019
3/11/2019
3/12/2019 T
3/13/2019 0.24
3/14/2019 1.07
3/15/2019 0.00
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 0.04
3/30/2019 0.45
3/31/2019 0.01
Day of YearDaily PrcpMultiday Prcp
4/1/2019
4/2/2019 T
4/3/2019 0.01
4/4/2019
4/5/2019
4/6/2019 0.00
4/7/2019 0.00
4/8/2019 0.00
4/9/2019 0.00
4/10/2019 0.00
4/11/2019
4/12/2019
4/13/2019
4/14/2019
4/15/2019
4/16/2019
4/17/2019
4/18/2019 0.02
4/19/2019
4/20/2019
4/21/2019
4/22/2019 0.46
4/23/2019 0.15
4/24/2019
4/25/2019
4/26/2019
4/27/2019 0.04
4/28/2019 T
4/29/2019
4/30/2019 0.40
5/1/2019 0.13
5/2/2019 0.08
5/3/2019
5/4/2019
5/5/2019
5/6/2019
5/7/2019 0.04
5/8/2019 0.17
5/9/2019 1.40
5/10/2019 0.06
5/11/2019
5/12/2019
5/13/2019 T
5/14/2019 T
5/15/2019 T
5/16/2019
5/17/2019
5/18/2019 0.12
5/19/2019 0.01
5/20/2019 0.24
5/21/2019 0.67
5/22/2019 0.06
5/23/2019 0.22
5/24/2019 0.09
5/25/2019
5/26/2019
5/27/2019 0.05
5/28/2019 0.37
5/29/2019 0.26
5/30/2019 0.01
5/31/2019
6/1/2019 0.02
6/2/2019 0.02
6/3/2019 T
6/4/2019
6/5/2019
6/6/2019
6/7/2019 0.02
6/8/2019 **
6/9/2019 0.15
6/10/2019 0.00
6/11/2019 0.00
6/12/2019 0.00
6/13/2019
6/14/2019
6/15/2019 0.00
6/16/2019
6/17/2019 0.29
6/18/2019 0.99
6/19/2019 0.06
6/20/2019 0.01
6/21/2019 0.00
6/22/2019 0.83
6/23/2019 0.17
6/24/2019 T
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 **
7/2/2019 **
7/3/2019 **
7/4/2019 0.47
7/5/2019 0.55
7/6/2019 0.01
7/7/2019
7/8/2019 0.02
7/9/2019
7/10/2019
7/11/2019 **
7/12/2019 **
7/13/2019 **
7/14/2019 **
7/15/2019 0.14
7/16/2019 0.12
7/17/2019
7/18/2019
7/19/2019
7/20/2019 0.00
7/21/2019 0.27
7/22/2019 0.17
7/23/2019
7/24/2019
7/25/2019 T
7/26/2019 0.02
7/27/2019 0.00
7/28/2019 T
7/29/2019 0.00
7/30/2019
7/31/2019 0.01
8/1/2019 0.01
8/2/2019 0.06
8/3/2019 0.02
8/4/2019
8/5/2019
8/6/2019 0.06
8/7/2019
8/8/2019
8/9/2019 0.20
8/10/2019 0.03
8/11/2019 T
8/12/2019 0.02
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 T
8/22/2019 0.05
8/23/2019
8/24/2019
8/25/2019
8/26/2019 0.00
8/27/2019 0.00
8/28/2019 0.00
8/29/2019 0.00
8/30/2019
8/31/2019
9/1/2019
9/2/2019
9/3/2019
9/4/2019 T
9/5/2019
9/6/2019 0.02
9/7/2019 0.16
9/8/2019 0.00
9/9/2019 0.13
9/10/2019 0.00
9/11/2019 0.04
9/12/2019 0.19
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 0.00
9/23/2019 0.00
9/24/2019 0.00
9/25/2019 0.00
9/26/2019 0.00
9/27/2019 0.00
9/28/2019 0.34
9/29/2019
9/30/2019



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2018 7:40 AM 0.00 0.0 M M M
10/2/2018 8:20 AM 0.01 M M M M
10/3/2018 7:00 AM 0.00 0.0 M M M
10/4/2018 7:45 AM 0.03 M M M M
10/5/2018 8:10 AM 0.17 M M M M
10/6/2018 8:10 AM 0.15 M M M M
10/7/2018 8:10 AM 0.02 M M M M
10/8/2018 8:20 AM 0.30 M M M M
10/9/2018 8:00 AM 0.18 M M M M
10/10/2018 8:00 AM 0.24 1.6 M 1.6 M
10/11/2018 8:00 AM 0.18 M M 2.5 M
10/12/2018 8:00 AM T M M M M
10/14/2018 11:00 AM 0.68 9.0 M M M
10/19/2018 8:30 AM T M M M M Around 9:00 last night there was snow falling. It may have been blowing in from the west.
11/9/2018 7:00 AM 0.00 0.0 M M M
11/10/2018 7:00 AM 0.00 0.0 M M M
11/11/2018 2:30 PM 0.52 11.6 M 11.6 M
11/12/2018 8:00 AM 0.10 M M 11.0 M
12/6/2018 7:00 AM 0.05 M M M M
12/8/2018 7:00 AM 0.00 0.0 M 1.5 M
12/9/2018 7:00 AM 0.00 0.0 M 0.5 M
12/19/2018 8:00 AM T M M M M saw some flakes at 8 am
12/20/2018 7:00 AM T M M M M
12/22/2018 7:00 AM T M M M M
12/27/2018 8:00 AM T M M M M
12/28/2018 8:00 AM T M M M M snowed for hours, but no measurable accumulation
12/30/2018 8:00 AM 0.00 0.0 M M M
12/31/2018 7:50 AM T 0.4 M M M snowing heavily, but light, fluffy snow
1/1/2019 7:50 AM 0.07 2.5 M 2.5 M
1/2/2019 7:00 AM 0.00 0.0 M M M
1/3/2019 7:50 AM 0.00 0.0 M 1.0 M
1/4/2019 7:50 AM 0.00 0.0 M M M
1/7/2019 7:50 AM 0.00 0.0 M M M I saw it snowing last night. Very light.
1/8/2019 7:50 AM T M M M M
1/11/2019 7:45 AM 0.14 2.4 0.14 2.5 0.14
1/12/2019 7:50 AM 0.51 5.7 0.51 7.5 M
1/13/2019 7:40 AM 0.00 0.0 M 5.0 M
1/14/2019 7:50 AM 0.00 0.0 M 5.0 M
1/19/2019 8:10 AM 0.18 1.8 0.18 1.8 M
1/21/2019 7:00 AM 0.00 0.0 M M M
2/4/2019 7:00 AM T M M M M
2/6/2019 7:00 AM T M M M M
2/7/2019 7:00 AM 0.29 3.5 M M M
2/8/2019 7:00 AM 0.00 0.0 M 3.0 M
2/9/2019 7:00 AM 0.00 0.0 M 2.0 M
2/10/2019 7:00 AM T T M 1.0 M
2/11/2019 7:00 AM 0.00 0.0 M 1.0 M
2/12/2019 7:00 AM 0.00 0.0 M M M
2/15/2019 7:00 AM 0.02 0.2 M M M
2/16/2019 7:00 AM T M M M M flurries at 7 AM
2/17/2019 8:00 AM T M M M M
2/18/2019 7:50 AM 0.03 2.4 M M M
2/19/2019 7:00 AM T 0.3 M M M
2/20/2019 7:00 AM 0.03 0.4 M M M
2/21/2019 7:00 AM 0.00 0.0 M M M
2/26/2019 7:00 AM 0.00 0.0 M M M
2/28/2019 7:00 AM T M M M M
3/1/2019 7:00 AM 0.00 0.0 M M M
3/2/2019 7:40 AM 0.11 1.4 M M M
3/3/2019 7:15 AM 0.40 3.7 M 4.5 M
3/4/2019 8:00 AM 0.07 1.2 M 5.0 M
3/5/2019 10:00 AM 0.00 0.0 M 4.5 M
3/6/2019 7:25 AM 0.00 0.0 M 3.0 M
3/7/2019 7:10 AM 0.09 0.4 M 2.0 M
3/12/2019 7:20 AM T M M M M
3/13/2019 7:30 AM 0.24 0.0 M M M The rain had just turned to snow at 7:30, and nothing was visible on the ground. Now, at 7:50 there is at least a half an inch.
3/14/2019 7:20 AM 1.07 6.0 M M M
3/15/2019 7:45 AM 0.00 0.0 M 4.5 M
3/29/2019 8:30 AM 0.04 M M M M
3/30/2019 6:55 AM 0.45 5.4 M M M
3/31/2019 9:00 AM 0.01 M M M M
4/2/2019 7:10 AM T M M M M A few flakes in the air, that is all.
4/3/2019 7:40 AM 0.01 M M M M
4/6/2019 7:30 AM 0.00 0.0 M M M
4/7/2019 8:00 AM 0.00 0.0 M M M
4/8/2019 7:20 AM 0.00 0.0 M M M
4/9/2019 7:30 AM 0.00 0.0 M M M
4/10/2019 7:05 AM 0.00 0.0 M M M
4/18/2019 7:50 AM 0.02 M M M M
4/22/2019 8:05 AM 0.46 M M M M
4/23/2019 8:05 AM 0.15 M M M M
4/27/2019 7:50 AM 0.04 M M M M
4/28/2019 7:50 AM T M M M M
4/30/2019 7:50 AM 0.40 3.6 M M M
5/1/2019 7:50 AM 0.13 0.2 M M M
5/2/2019 7:50 AM 0.08 0.3 M M M
5/7/2019 7:50 AM 0.04 M M M M
5/8/2019 8:00 AM 0.17 M M M M
5/9/2019 8:00 AM 1.40 4.8 M M M
5/10/2019 8:00 AM 0.06 M M 2.5 M
5/13/2019 7:40 AM T M M M M
5/14/2019 7:50 AM T M M M M
5/15/2019 7:50 AM T M M M M
5/18/2019 7:40 AM 0.12 M M M M
5/19/2019 8:00 AM 0.01 M M M M
5/20/2019 8:00 AM 0.24 T M M M
5/21/2019 8:00 AM 0.67 4.8 M M M There was 0.15" of rain by 6 PM on Monday. I then pulled the inner tube, because it was turning to snow.
5/22/2019 8:00 AM 0.06 0.3 M 2.0 M
5/23/2019 8:00 AM 0.22 M M M M
5/24/2019 8:00 AM 0.09 M M M M
5/27/2019 8:00 AM 0.05 M M M M
5/28/2019 7:40 AM 0.37 M M M M
5/29/2019 8:00 AM 0.26 M M M M
5/30/2019 8:00 AM 0.01 M M M M
6/1/2019 7:20 AM 0.02 M M M M
6/2/2019 7:10 AM 0.02 M M M M
6/3/2019 7:40 AM T M M M M
6/7/2019 7:20 AM 0.02 M M M M
6/10/2019 7:25 AM 0.00 0.0 M M M
6/11/2019 7:40 AM 0.00 0.0 M M M
6/12/2019 7:30 AM 0.00 0.0 M M M
6/15/2019 7:10 AM 0.00 0.0 M M M
6/17/2019 7:40 AM 0.29 M M M M
6/18/2019 7:10 AM 0.99 M M M M
6/19/2019 7:20 AM 0.06 M M M M
6/20/2019 7:10 AM 0.01 M M M M
6/21/2019 7:20 AM 0.00 0.0 M M M
6/22/2019 7:05 AM 0.83 M M M M
6/23/2019 8:10 AM 0.17 M M M M
6/24/2019 7:00 AM T M M M M
7/5/2019 8:00 AM 0.55 M M M M there was some hail on Thursday - it's very possible that the funnel of the gauge got clogged and some hail bounced out.
7/6/2019 7:00 AM 0.01 M M M M
7/8/2019 7:00 AM 0.02 M M M M
7/16/2019 11:00 AM 0.12 M M M M This was only from 3:30 yesterday. Previous to that was a multi-day reading.
7/20/2019 7:00 AM 0.00 0.0 M M M
7/21/2019 7:00 AM 0.27 M M M M
7/22/2019 7:00 AM 0.17 M M M M
7/25/2019 7:00 AM T M M M M
7/26/2019 7:00 AM 0.02 M M M M
7/27/2019 7:00 AM 0.00 0.0 M M M
7/28/2019 7:00 AM T M M M M
7/29/2019 7:00 AM 0.00 0.0 M M M
7/31/2019 7:00 AM 0.01 M M M M
8/1/2019 7:10 AM 0.01 M M M M
8/2/2019 7:40 AM 0.06 M M M M
8/3/2019 7:20 AM 0.02 M M M M
8/6/2019 7:00 AM 0.06 M M M M
8/9/2019 7:00 AM 0.20 M M M M on 8/8 there was about 0.10 of rain between 6:10 and 6:20
8/10/2019 7:00 AM 0.03 M M M M
8/11/2019 7:00 AM T M M M M
8/12/2019 7:10 AM 0.02 M M M M
8/21/2019 7:00 AM T M M M M
8/22/2019 7:00 AM 0.05 M M M M
8/26/2019 7:00 AM 0.00 0.0 M M M
8/27/2019 7:00 AM 0.00 0.0 M M M
8/28/2019 7:00 AM 0.00 0.0 M M M
8/29/2019 7:00 AM 0.00 0.0 M M M
9/4/2019 7:00 AM T M M M M
9/6/2019 5:00 PM 0.02 M M M M
9/7/2019 8:00 AM 0.16 M M M M
9/8/2019 7:00 AM 0.00 0.0 M M M
9/9/2019 7:30 AM 0.13 M M M M
9/10/2019 7:00 AM 0.00 0.0 M M M
9/11/2019 7:30 AM 0.04 M M M M
9/12/2019 6:40 AM 0.19 M M M M
9/22/2019 7:00 AM 0.00 0.0 M M M
9/23/2019 7:00 AM 0.00 0.0 M M M
9/24/2019 7:00 AM 0.00 0.0 M M M
9/25/2019 7:00 AM 0.00 0.0 M M M
9/26/2019 7:00 AM 0.00 0.0 M M M
9/27/2019 7:00 AM 0.00 0.0 M M M
9/28/2019 7:40 AM 0.34 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/1/2018 11/08/2018 8:00 AM 8 0.01 M M
2/22/2019 2/25/2019 7:00 AM 4 0.11 M M
6/8/2019 6/09/2019 7:05 AM 2 0.15 M M
6/30/2019 7/04/2019 9:00 AM 5 0.47 M M
7/11/2019 7/15/2019 3:00 PM 5 0.14 M M hail fell just before measurement (~2:30)



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