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 13 1.46 2.07 26 1.48 22 0.59 4 2 6 1 6.2 3 0
Nov 13 1.39 0.00 17 0.00 17 0.00 0 0 0 1 1.2 1 0
Dec 13 0.93 0.03 1 0.03 1 0.00 0 0 1 0 7.0 2 0
Jan 14 0.79 1.66 16 1.66 16 0.00 0 0 6 0 23.2 5 4
Feb 14 0.91 0.57 9 0.57 9 0.00 0 0 6 1 7.7 5 6
March 14 2.06 0.67 18 0.67 18 0.00 0 0 3 1 7.1 3 4
April 14 2.78 2.03 23 1.35 18 0.68 5 1 3 0 11.2 1 1
May 14 3.08 1.87 13 1.87 13 0.00 0 0 5 0 0.0 0 0
June 14 2.72 1.44 20 1.44 20 0.00 0 0 10 0 0.0 0 0
July 14 1.92 3.40 17 3.34 14 0.06 3 1 10 0 0.0 0 0
Aug 14 1.93 1.88 24 1.69 19 0.19 5 1 15 0 0.0 0 0
Sept 14 1.74 1.96 26 1.14 10 0.82 16 1 5 0 0.0 0 0
Water Year Totals: 21.71" 17.58" 210 days 15.24" 177 2.34" 33 days 6 70 days 4 days 63.6" 20 days 15 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
10/1/2013 **
10/2/2013 0.51
10/3/2013
10/4/2013 0.85
10/5/2013 **
10/6/2013 0.08
10/7/2013 0.00
10/8/2013 0.00
10/9/2013 0.00
10/10/2013 0.00
10/11/2013 0.01
10/12/2013 0.00
10/13/2013 0.00
10/14/2013
10/15/2013 T
10/16/2013 0.00
10/17/2013 0.00
10/18/2013 0.03
10/19/2013 0.00
10/20/2013
10/21/2013 0.20
10/22/2013 0.00
10/23/2013 0.00
10/24/2013 0.00
10/25/2013
10/26/2013 0.00
10/27/2013
10/28/2013 0.00
10/29/2013 0.11
10/30/2013 0.28
10/31/2013 0.00
11/1/2013 0.00
11/2/2013 0.00
11/3/2013 0.00
11/4/2013 0.00
11/5/2013 0.00
11/6/2013 0.00
11/7/2013 0.00
11/8/2013 0.00
11/9/2013 0.00
11/10/2013 0.00
11/11/2013 0.00
11/12/2013 0.00
11/13/2013 0.00
11/14/2013 0.00
11/15/2013 0.00
11/16/2013 0.00
11/17/2013 T
11/18/2013
11/19/2013
11/20/2013
11/21/2013 M
11/22/2013
11/23/2013
11/24/2013
11/25/2013
11/26/2013
11/27/2013
11/28/2013
11/29/2013
11/30/2013
12/1/2013
12/2/2013
12/3/2013
12/4/2013 M
12/5/2013
12/6/2013
12/7/2013
12/8/2013
12/9/2013
12/10/2013
12/11/2013
12/12/2013
12/13/2013
12/14/2013
12/15/2013
12/16/2013
12/17/2013
12/18/2013
12/19/2013
12/20/2013
12/21/2013
12/22/2013 0.03
12/23/2013
12/24/2013
12/25/2013
12/26/2013
12/27/2013
12/28/2013
12/29/2013
12/30/2013
12/31/2013
Day of YearDaily PrcpMultiday Prcp
1/1/2014
1/2/2014
1/3/2014 0.00
1/4/2014 0.46
1/5/2014 0.23
1/6/2014 0.04
1/7/2014
1/8/2014
1/9/2014
1/10/2014
1/11/2014
1/12/2014
1/13/2014
1/14/2014
1/15/2014 0.00
1/16/2014
1/17/2014
1/18/2014 0.00
1/19/2014
1/20/2014 0.00
1/21/2014
1/22/2014 0.00
1/23/2014 0.15
1/24/2014 0.00
1/25/2014 0.00
1/26/2014 0.00
1/27/2014 0.20
1/28/2014 M
1/29/2014 0.00
1/30/2014 0.00
1/31/2014 0.58
2/1/2014 0.12
2/2/2014
2/3/2014
2/4/2014 0.10
2/5/2014 0.10
2/6/2014
2/7/2014
2/8/2014
2/9/2014 0.05
2/10/2014
2/11/2014
2/12/2014
2/13/2014
2/14/2014
2/15/2014
2/16/2014
2/17/2014
2/18/2014
2/19/2014
2/20/2014 T
2/21/2014
2/22/2014
2/23/2014 0.08
2/24/2014 0.00
2/25/2014 0.00
2/26/2014 0.12
2/27/2014
2/28/2014
3/1/2014
3/2/2014 0.23
3/3/2014 0.00
3/4/2014 0.00
3/5/2014 0.29
3/6/2014
3/7/2014
3/8/2014
3/9/2014
3/10/2014
3/11/2014
3/12/2014 0.00
3/13/2014
3/14/2014
3/15/2014 0.00
3/16/2014 0.00
3/17/2014 0.00
3/18/2014 0.00
3/19/2014 0.00
3/20/2014
3/21/2014 0.00
3/22/2014 T
3/23/2014 0.15
3/24/2014 0.00
3/25/2014
3/26/2014 0.00
3/27/2014
3/28/2014 0.00
3/29/2014 0.00
3/30/2014 0.00
3/31/2014
Day of YearDaily PrcpMultiday Prcp
4/1/2014
4/2/2014 0.00
4/3/2014 1.03
4/4/2014
4/5/2014 0.00
4/6/2014 0.00
4/7/2014 0.00
4/8/2014 0.00
4/9/2014 0.00
4/10/2014 **
4/11/2014 **
4/12/2014 **
4/13/2014 **
4/14/2014 0.68
4/15/2014 0.00
4/16/2014 0.00
4/17/2014 0.00
4/18/2014 0.00
4/19/2014 0.00
4/20/2014 0.22
4/21/2014 0.10
4/22/2014 0.00
4/23/2014 0.00
4/24/2014
4/25/2014
4/26/2014
4/27/2014
4/28/2014 0.00
4/29/2014 0.00
4/30/2014
5/1/2014 0.00
5/2/2014 0.00
5/3/2014 0.00
5/4/2014
5/5/2014 0.00
5/6/2014 0.00
5/7/2014 0.00
5/8/2014 0.32
5/9/2014
5/10/2014
5/11/2014
5/12/2014
5/13/2014
5/14/2014
5/15/2014
5/16/2014
5/17/2014
5/18/2014
5/19/2014
5/20/2014 0.00
5/21/2014
5/22/2014
5/23/2014
5/24/2014 1.15
5/25/2014 0.36
5/26/2014 0.03
5/27/2014 0.01
5/28/2014
5/29/2014 0.00
5/30/2014
5/31/2014
6/1/2014 0.00
6/2/2014 0.00
6/3/2014 0.00
6/4/2014 0.00
6/5/2014
6/6/2014 0.01
6/7/2014
6/8/2014 0.05
6/9/2014 0.28
6/10/2014
6/11/2014 0.00
6/12/2014
6/13/2014
6/14/2014
6/15/2014 0.01
6/16/2014
6/17/2014 0.00
6/18/2014 0.00
6/19/2014 0.62
6/20/2014 0.00
6/21/2014 0.00
6/22/2014 0.00
6/23/2014 0.16
6/24/2014 0.12
6/25/2014 0.01
6/26/2014
6/27/2014 0.02
6/28/2014 0.16
6/29/2014
6/30/2014
Day of YearDaily PrcpMultiday Prcp
7/1/2014 0.00
7/2/2014
7/3/2014 0.00 **
7/4/2014 **
7/5/2014 0.06
7/6/2014 0.02
7/7/2014
7/8/2014 0.20
7/9/2014 0.00
7/10/2014 0.13
7/11/2014
7/12/2014
7/13/2014
7/14/2014
7/15/2014 0.00
7/16/2014 0.31
7/17/2014 0.40
7/18/2014
7/19/2014
7/20/2014
7/21/2014
7/22/2014
7/23/2014
7/24/2014
7/25/2014
7/26/2014 0.03
7/27/2014 0.22
7/28/2014 0.02
7/29/2014
7/30/2014 1.21
7/31/2014 0.80
8/1/2014
8/2/2014 0.00
8/3/2014
8/4/2014
8/5/2014 0.02
8/6/2014 0.04
8/7/2014
8/8/2014 0.08
8/9/2014
8/10/2014 0.04
8/11/2014 0.02
8/12/2014
8/13/2014 0.00
8/14/2014 **
8/15/2014 **
8/16/2014 **
8/17/2014 **
8/18/2014 0.19
8/19/2014
8/20/2014 0.06
8/21/2014 0.01
8/22/2014 0.02
8/23/2014 0.22
8/24/2014 0.18
8/25/2014 0.00
8/26/2014 0.10
8/27/2014 0.28
8/28/2014 0.06
8/29/2014 0.01
8/30/2014 0.55
8/31/2014 0.00
9/1/2014 0.04
9/2/2014 0.00
9/3/2014
9/4/2014 0.00
9/5/2014 0.58
9/6/2014 0.11
9/7/2014 **
9/8/2014 **
9/9/2014 **
9/10/2014 **
9/11/2014 **
9/12/2014 **
9/13/2014 **
9/14/2014 **
9/15/2014 **
9/16/2014 **
9/17/2014 **
9/18/2014 **
9/19/2014 **
9/20/2014 **
9/21/2014 **
9/22/2014 0.82
9/23/2014 0.01
9/24/2014
9/25/2014 0.00
9/26/2014 0.00
9/27/2014
9/28/2014
9/29/2014 0.00
9/30/2014 0.40



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/4/2013 7:00 AM 0.85 M M M M
10/7/2013 7:00 AM 0.00 0.0 M M M
10/8/2013 7:00 AM 0.00 0.0 M M M
10/9/2013 7:00 AM 0.00 0.0 M M M
10/10/2013 7:00 AM 0.00 0.0 M M M
10/11/2013 7:00 AM 0.01 M M M M
10/12/2013 7:00 AM 0.00 0.0 M M M
10/13/2013 7:00 AM 0.00 0.0 M M M
10/15/2013 7:00 AM T M M M M
10/16/2013 7:00 AM 0.00 0.0 M M M
10/17/2013 7:00 AM 0.00 0.0 M M M
10/18/2013 7:00 AM 0.03 2.7 M M M
10/19/2013 7:00 AM 0.00 0.0 M M M
10/21/2013 7:00 AM 0.20 1.5 M M M
10/22/2013 7:00 AM 0.00 0.0 M M M
10/23/2013 7:00 AM 0.00 0.0 M M M
10/24/2013 7:00 AM 0.00 0.0 M M M
10/26/2013 7:00 AM 0.00 0.0 M M M
10/28/2013 7:00 AM 0.00 0.0 M M M
10/29/2013 7:00 AM 0.11 M M M M
10/30/2013 7:00 AM 0.28 2.0 M M M
10/31/2013 7:00 AM 0.00 0.0 M M M
11/1/2013 7:00 AM 0.00 0.0 M M M
11/2/2013 7:00 AM 0.00 0.0 M M M
11/3/2013 7:00 AM 0.00 0.0 M M M
11/4/2013 7:00 AM 0.00 0.0 M M M
11/5/2013 7:00 AM 0.00 0.0 M M M
11/6/2013 7:00 AM 0.00 0.0 M M M
11/7/2013 7:00 AM 0.00 0.0 M M M
11/8/2013 7:00 AM 0.00 0.0 M M M
11/9/2013 7:00 AM 0.00 0.0 M M M
11/10/2013 7:00 AM 0.00 0.0 M M M
11/11/2013 7:00 AM 0.00 0.0 M M M
11/12/2013 7:00 AM 0.00 0.0 M M M
11/13/2013 7:00 AM 0.00 0.0 M M M
11/14/2013 7:00 AM 0.00 0.0 M M M
11/15/2013 7:00 AM 0.00 0.0 M M M
11/16/2013 7:00 AM 0.00 0.0 M M M
11/17/2013 7:00 AM T M M M M
11/21/2013 7:00 AM M 1.2 M M M (edit: daily precip initially recorded as 1.26". changed to NA as this appears to be a new snowfall total. observer contacted. P.G.)
12/4/2013 7:00 AM M 6.0 M M M (edit: daily precip changed from 6.00" to NA. this looks like a pre-melted snow total. observer will be contacted. P.G.)
12/22/2013 7:00 AM 0.03 1.0 M M M
1/3/2014 7:00 AM 0.00 0.0 M M M
1/4/2014 8:00 AM 0.46 6.3 M 6.0 M
1/5/2014 7:00 AM 0.23 4.0 M 9.0 M
1/6/2014 8:00 AM 0.04 M M 7.5 M Extensive drifting on snow platform made measurements of new snow impossible.
1/15/2014 7:00 AM 0.00 0.0 M M M
1/18/2014 7:00 AM 0.00 0.0 M M M
1/20/2014 7:00 AM 0.00 0.0 M M M
1/22/2014 7:00 AM 0.00 0.0 M M M
1/23/2014 7:00 AM 0.15 3.3 M 3.3 M
1/24/2014 7:00 AM 0.00 0.0 M M M
1/25/2014 7:00 AM 0.00 0.0 M M M
1/26/2014 7:00 AM 0.00 0.0 M M M
1/27/2014 9:00 AM 0.20 4.5 M M M
1/28/2014 7:00 AM M M M M M (edit: daily precip and new snowfall changed from 0.00" to NA. P.G.)
1/29/2014 7:00 AM 0.00 0.0 M M M
1/30/2014 7:00 AM 0.00 0.0 M M M
1/31/2014 7:00 AM 0.58 5.1 M M M
2/1/2014 7:00 AM 0.12 2.4 M 9.0 M
2/4/2014 7:00 AM 0.10 1.3 M 8.4 M
2/5/2014 7:00 AM 0.10 1.5 M 9.5 M Error: 2/04/2014 Rain and Melted snow should have been .05.
2/9/2014 7:00 AM 0.05 T M 7.0 M
2/20/2014 7:00 AM T M M M M
2/23/2014 7:00 AM 0.08 0.9 M 0.9 M
2/24/2014 7:00 AM 0.00 0.0 M M M
2/25/2014 7:00 AM 0.00 0.0 M M M
2/26/2014 7:00 AM 0.12 1.6 M 1.6 M
3/2/2014 9:00 AM 0.23 3.0 M 3.0 M We left our house at 7:00 am on 3/1 and there was no precipitation. By the time we reached town about 15 minutes later, it was snowing and by the time we returned home at about 7:35 am it was snowing heavily.
3/3/2014 7:00 AM 0.00 0.0 M 2.5 M
3/4/2014 7:00 AM 0.00 0.0 M M M
3/5/2014 7:00 AM 0.29 3.2 M 3.2 M
3/12/2014 7:00 AM 0.00 0.0 M M M
3/15/2014 7:00 AM 0.00 0.0 M M M
3/16/2014 7:00 AM 0.00 0.0 M M M
3/17/2014 7:00 AM 0.00 0.0 M M M
3/18/2014 7:00 AM 0.00 0.0 M M M
3/19/2014 7:00 AM 0.00 0.0 M M M
3/21/2014 7:00 AM 0.00 0.0 M M M
3/22/2014 7:00 AM T T M M M
3/23/2014 7:00 AM 0.15 0.9 M 0.9 M
3/24/2014 7:00 AM 0.00 0.0 M M M
3/26/2014 7:00 AM 0.00 0.0 M M M
3/28/2014 7:00 AM 0.00 0.0 M M M
3/29/2014 7:00 AM 0.00 0.0 M M M
3/30/2014 7:00 AM 0.00 0.0 M M M
4/2/2014 7:00 AM 0.00 0.0 M M M
4/3/2014 7:00 AM 1.03 11.2 M 11.2 M
4/5/2014 7:00 AM 0.00 0.0 M M M
4/6/2014 7:00 AM 0.00 0.0 M M M
4/7/2014 7:00 AM 0.00 0.0 M M M
4/8/2014 7:00 AM 0.00 0.0 M M M
4/9/2014 7:00 AM 0.00 0.0 M M M
4/15/2014 7:00 AM 0.00 0.0 M M M
4/16/2014 7:00 AM 0.00 0.0 M M M
4/17/2014 7:00 AM 0.00 0.0 M M M
4/18/2014 7:00 AM 0.00 0.0 M M M
4/19/2014 7:00 AM 0.00 0.0 M M M
4/20/2014 7:00 AM 0.22 M M M M
4/21/2014 7:00 AM 0.10 M M M M
4/22/2014 7:00 AM 0.00 0.0 M M M
4/23/2014 7:00 AM 0.00 0.0 M M M
4/28/2014 7:00 AM 0.00 0.0 M M M
4/29/2014 7:00 AM 0.00 0.0 M M M
5/1/2014 7:00 AM 0.00 0.0 M M M
5/2/2014 7:00 AM 0.00 0.0 M M M
5/3/2014 7:00 AM 0.00 0.0 M M M
5/5/2014 7:00 AM 0.00 0.0 M M M
5/6/2014 7:00 AM 0.00 0.0 M M M
5/7/2014 7:00 AM 0.00 0.0 M M M
5/8/2014 7:30 AM 0.32 M M 0.0 0.00 There was a trace of snow but was unmeasurable.
5/20/2014 7:00 AM 0.00 0.0 M M M
5/24/2014 7:00 AM 1.15 M M M M
5/25/2014 7:00 AM 0.36 M M M M
5/26/2014 7:00 AM 0.03 M M M M
5/27/2014 7:00 AM 0.01 M M M M
5/29/2014 7:00 AM 0.00 0.0 M M M
6/1/2014 7:00 AM 0.00 0.0 M M M
6/2/2014 7:00 AM 0.00 0.0 M M M
6/3/2014 7:00 AM 0.00 0.0 M M M
6/4/2014 7:00 AM 0.00 0.0 M M M
6/6/2014 7:00 AM 0.01 M M M M
6/8/2014 7:00 AM 0.05 M M M M
6/9/2014 7:00 AM 0.28 M M M M
6/11/2014 7:00 AM 0.00 0.0 M M M
6/15/2014 7:00 AM 0.01 M M M M
6/17/2014 7:00 AM 0.00 0.0 M M M
6/18/2014 7:00 AM 0.00 0.0 M M M
6/19/2014 7:00 AM 0.62 M M M M First 7 minutes was small hail.
6/20/2014 7:00 AM 0.00 0.0 M M M
6/21/2014 7:00 AM 0.00 0.0 M M M
6/22/2014 7:00 AM 0.00 0.0 M M M
6/23/2014 7:00 AM 0.16 M M M M
6/24/2014 7:00 AM 0.12 M M M M
6/25/2014 7:00 AM 0.01 M M M M
6/27/2014 7:00 AM 0.02 M M M M
6/28/2014 7:00 AM 0.16 M M M M
7/1/2014 7:00 AM 0.00 0.0 M M M
7/3/2014 7:00 AM 0.00 0.0 M M M
7/6/2014 7:00 AM 0.02 M M M M
7/8/2014 7:00 AM 0.20 M M M M
7/9/2014 7:00 AM 0.00 0.0 M M M
7/10/2014 7:00 AM 0.13 M M M M
7/15/2014 7:00 AM 0.00 0.0 M M M
7/16/2014 7:00 AM 0.31 M M M M
7/17/2014 7:00 AM 0.40 M M M M
7/26/2014 7:00 AM 0.03 M M M M
7/27/2014 7:00 AM 0.22 M M M M
7/28/2014 7:00 AM 0.02 M M M M
7/30/2014 8:30 AM 1.21 M M M M
7/31/2014 7:00 AM 0.80 M M M M
8/2/2014 7:00 AM 0.00 0.0 M M M
8/5/2014 7:00 AM 0.02 M M M M
8/6/2014 7:00 AM 0.04 M M M M
8/8/2014 7:00 AM 0.08 M M M M
8/10/2014 7:00 AM 0.04 M M M M
8/11/2014 7:00 AM 0.02 M M M M
8/13/2014 7:00 AM 0.00 0.0 M M M
8/20/2014 7:00 AM 0.06 M M M M
8/21/2014 7:00 AM 0.01 M M M M
8/22/2014 7:00 AM 0.02 M M M M
8/23/2014 7:00 AM 0.22 M M M M In the late morning, a large bank of clouds formed to the west and a lot of thunder occurred. The thunder stopped shortly before the rain started and during the rain there was no thunder or lightning.
8/24/2014 7:00 AM 0.18 M M M M This storm included a lot of thunder and lightning, with one very loud strike which had no perceptible interval between the flash and the thunder.
8/25/2014 7:00 AM 0.00 0.0 M M M
8/26/2014 7:00 AM 0.10 M M M M .01" fell in the afternoon about 3pm and the rest fell about 9:30pm
8/27/2014 7:00 AM 0.28 M M M M
8/28/2014 7:00 AM 0.06 M M M M
8/29/2014 7:00 AM 0.01 M M M M
8/30/2014 7:00 AM 0.55 M M M M .31" rain between 2:05 - 2:25pm accompanied by a lot of hail up to 3/8" diameter and max wind of 38 mph. Second storm starting at 3:35 pm to 3:50pm had 0.24"rain. All precip on 8/29.
8/31/2014 7:00 AM 0.00 0.0 M M M
9/1/2014 7:00 AM 0.04 M M M M
9/2/2014 7:00 AM 0.00 0.0 M M M
9/4/2014 7:00 AM 0.00 0.0 M M M
9/5/2014 6:30 AM 0.58 M M M M
9/6/2014 7:00 AM 0.11 M M M M
9/23/2014 9:00 AM 0.01 M M M M
9/25/2014 7:00 AM 0.00 0.0 M M M
9/26/2014 7:00 AM 0.00 0.0 M M M
9/29/2014 7:00 AM 0.00 0.0 M M M
9/30/2014 7:00 AM 0.40 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/25/2013 10/02/2013 12:00 AM 8 0.51 M M
10/5/2013 10/06/2013 8:00 AM 2 0.08 M M
4/10/2014 4/14/2014 12:00 AM 5 0.68 6.8 M Observer recorded liquid precip as 6.80" ... changed to 0.68 assuming they meant to do a 10:1 ratio CSPEARS 5/17
7/3/2014 7/05/2014 12:00 AM 3 0.06 M M
8/14/2014 8/18/2014 11:00 AM 5 0.19 M M
9/7/2014 9/22/2014 8:30 AM 16 0.82 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