Station Overview Station Location
Station Number CO-BO-497 Latitude 39.9807
Station Name Boulder 3.2 S Longitude -105.2418
County Boulder Elevation (ft) 5404



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 17 1.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 17 1.04 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 17 0.82 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 18 0.65 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 18 0.64 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 18 1.89 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 18 2.34 1.04 21 1.04 21 0.00 0 0 6 0 0.1 1 0
May 18 2.66 5.92 31 5.92 31 0.00 0 0 13 0 0.0 0 0
June 18 2.17 1.33 15 1.33 15 0.00 0 0 5 0 0.0 0 0
July 18 1.67 1.61 30 1.30 19 0.31 11 1 8 0 0.0 0 0
Aug 18 1.84 0.73 30 0.65 26 0.08 4 1 3 3 0.0 0 0
Sept 18 1.61 1.07 30 1.04 14 0.03 16 3 3 0 0.0 0 0
Water Year Totals: 18.70" 11.70" 157 days 11.28" 126 0.42" 31 days 5 38 days 3 days 0.1" 1 days 0 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
10/1/2017
10/2/2017
10/3/2017
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017
10/9/2017
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017
10/30/2017
10/31/2017
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017
11/6/2017
11/7/2017
11/8/2017
11/9/2017
11/10/2017
11/11/2017
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017
11/19/2017
11/20/2017
11/21/2017
11/22/2017
11/23/2017
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017
11/29/2017
11/30/2017
12/1/2017
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017
12/17/2017
12/18/2017
12/19/2017
12/20/2017
12/21/2017
12/22/2017
12/23/2017
12/24/2017
12/25/2017
12/26/2017
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
4/8/2018
4/9/2018
4/10/2018 0.09
4/11/2018 0.00
4/12/2018 0.00
4/13/2018 0.01
4/14/2018 0.00
4/15/2018 0.00
4/16/2018 0.00
4/17/2018 0.00
4/18/2018 0.00
4/19/2018 0.00
4/20/2018 0.00
4/21/2018 0.38
4/22/2018 0.11
4/23/2018 0.00
4/24/2018 0.06
4/25/2018 0.39
4/26/2018 0.00
4/27/2018 0.00
4/28/2018 0.00
4/29/2018 0.00
4/30/2018 0.00
5/1/2018 0.02
5/2/2018 0.03
5/3/2018 0.94
5/4/2018 0.82
5/5/2018 0.00
5/6/2018 0.00
5/7/2018 0.00
5/8/2018 0.00
5/9/2018 0.00
5/10/2018 0.00
5/11/2018 0.00
5/12/2018 0.16
5/13/2018 0.46
5/14/2018 1.00
5/15/2018 0.03
5/16/2018 0.00
5/17/2018 0.00
5/18/2018 0.00
5/19/2018 1.65
5/20/2018 0.39
5/21/2018 0.18
5/22/2018 0.00
5/23/2018 0.00
5/24/2018 0.00
5/25/2018 0.00
5/26/2018 0.00
5/27/2018 0.00
5/28/2018 0.00
5/29/2018 0.06
5/30/2018 0.00
5/31/2018 0.18
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018 0.00
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018 0.00
6/17/2018 0.14
6/18/2018 0.74
6/19/2018 0.38
6/20/2018 0.04
6/21/2018 0.00
6/22/2018 0.00
6/23/2018 0.00
6/24/2018 0.00
6/25/2018 0.03
6/26/2018 0.00
6/27/2018 0.00
6/28/2018 0.00
6/29/2018 0.00
6/30/2018 M
Day of YearDaily PrcpMultiday Prcp
7/1/2018 M
7/2/2018 0.00
7/3/2018 0.00
7/4/2018 0.00
7/5/2018 0.02
7/6/2018 0.24
7/7/2018 0.00
7/8/2018 0.00
7/9/2018 0.00
7/10/2018 0.00
7/11/2018 **
7/12/2018 **
7/13/2018 **
7/14/2018 **
7/15/2018 **
7/16/2018 **
7/17/2018 **
7/18/2018 **
7/19/2018 **
7/20/2018 **
7/21/2018 0.31
7/22/2018 0.00
7/23/2018 0.13
7/24/2018 0.34
7/25/2018 0.00
7/26/2018 0.16
7/27/2018 0.29
7/28/2018 0.06
7/29/2018 0.06
7/30/2018 0.00
7/31/2018 0.00
8/1/2018 0.00
8/2/2018 0.00
8/3/2018 0.02
8/4/2018 0.00
8/5/2018 0.00
8/6/2018 T
8/7/2018 T
8/8/2018 T
8/9/2018 0.00
8/10/2018 0.00
8/11/2018 0.00
8/12/2018 0.00
8/13/2018 0.00
8/14/2018 **
8/15/2018 **
8/16/2018 **
8/17/2018 0.08
8/18/2018 0.00
8/19/2018 0.58
8/20/2018 0.00
8/21/2018 0.00
8/22/2018 0.05
8/23/2018 0.00
8/24/2018 0.00
8/25/2018 0.00
8/26/2018 0.00
8/27/2018 0.00
8/28/2018 0.00
8/29/2018
8/30/2018 0.00
8/31/2018 0.00
9/1/2018 0.00
9/2/2018 0.00
9/3/2018 0.00
9/4/2018 0.00
9/5/2018 0.94
9/6/2018 0.07
9/7/2018 0.03
9/8/2018 **
9/9/2018 **
9/10/2018 **
9/11/2018 **
9/12/2018 **
9/13/2018 **
9/14/2018 0.00
9/15/2018 0.00
9/16/2018 **
9/17/2018 **
9/18/2018 **
9/19/2018 **
9/20/2018 **
9/21/2018 0.03
9/22/2018 0.00
9/23/2018 0.00
9/24/2018 0.00
9/25/2018 0.00
9/26/2018 0.00
9/27/2018 **
9/28/2018 **
9/29/2018 0.00
9/30/2018 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
4/10/2018 7:00 AM 0.09 M M M M
4/11/2018 7:00 AM 0.00 0.0 M M M
4/12/2018 7:00 AM 0.00 0.0 M M M
4/13/2018 7:00 AM 0.01 M M M M
4/14/2018 7:00 AM 0.00 0.0 M M M
4/15/2018 7:00 AM 0.00 0.0 M M M
4/16/2018 6:00 AM 0.00 0.0 M M M
4/17/2018 6:00 AM 0.00 0.0 M M M
4/18/2018 6:00 AM 0.00 0.0 M M M
4/19/2018 6:00 AM 0.00 0.0 M M M
4/20/2018 6:00 AM 0.00 0.0 M M M
4/21/2018 6:00 AM 0.38 0.1 M M M
4/22/2018 6:00 AM 0.11 M M M M
4/23/2018 6:00 AM 0.00 0.0 M M M
4/24/2018 6:00 AM 0.06 M M M M
4/25/2018 6:00 AM 0.39 M M M M
4/26/2018 6:00 AM 0.00 0.0 M M M
4/27/2018 6:00 AM 0.00 0.0 M M M
4/28/2018 6:00 AM 0.00 0.0 M M M
4/29/2018 6:00 AM 0.00 0.0 M M M
4/30/2018 6:00 AM 0.00 0.0 M M M
5/1/2018 6:00 AM 0.02 M M M M
5/2/2018 6:00 AM 0.03 M M M M
5/3/2018 6:00 AM 0.94 M M M M
5/4/2018 6:00 AM 0.82 M M M M
5/5/2018 6:00 AM 0.00 0.0 M M M
5/6/2018 6:00 AM 0.00 0.0 M M M
5/7/2018 6:00 AM 0.00 0.0 M M M
5/8/2018 6:00 AM 0.00 0.0 M M M
5/9/2018 6:00 AM 0.00 0.0 M M M
5/10/2018 6:00 AM 0.00 0.0 M M M
5/11/2018 6:00 AM 0.00 0.0 M M M
5/12/2018 6:00 AM 0.16 M M M M
5/13/2018 6:00 AM 0.46 M M M M
5/14/2018 6:00 AM 1.00 M M M M
5/15/2018 6:00 AM 0.03 M M M M
5/16/2018 6:00 AM 0.00 0.0 M M M
5/17/2018 6:00 AM 0.00 0.0 M M M
5/18/2018 6:00 AM 0.00 0.0 M M M
5/19/2018 6:00 AM 1.65 M M M M
5/20/2018 6:00 AM 0.39 M M M M
5/21/2018 6:00 AM 0.18 M M M M
5/22/2018 6:00 AM 0.00 0.0 M M M
5/23/2018 6:00 AM 0.00 0.0 M M M
5/24/2018 6:00 AM 0.00 0.0 M M M
5/25/2018 6:00 AM 0.00 0.0 M M M
5/26/2018 6:00 AM 0.00 0.0 M M M
5/27/2018 6:00 AM 0.00 0.0 M M M
5/28/2018 6:00 AM 0.00 0.0 M M M
5/29/2018 6:00 AM 0.06 M M M M
5/30/2018 6:00 AM 0.00 0.0 M M M
5/31/2018 6:00 AM 0.18 M M M M
6/8/2018 6:00 AM 0.00 0.0 M M M
6/16/2018 6:00 AM 0.00 0.0 M M M
6/17/2018 6:00 AM 0.14 M M M M
6/18/2018 6:00 AM 0.74 M M M M
6/19/2018 6:00 AM 0.38 M M M M
6/20/2018 6:00 AM 0.04 M M M M
6/21/2018 6:00 AM 0.00 0.0 M M M
6/22/2018 6:00 AM 0.00 0.0 M M M
6/23/2018 6:00 AM 0.00 0.0 M M M
6/24/2018 6:00 AM 0.00 0.0 M M M
6/25/2018 6:00 AM 0.03 M M M M
6/26/2018 6:00 AM 0.00 0.0 M M M
6/27/2018 6:00 AM 0.00 0.0 M M M
6/28/2018 6:00 AM 0.00 0.0 M M M
6/29/2018 6:00 AM 0.00 0.0 M M M
6/30/2018 6:00 AM M M M M M {EDIT: observer reported 0.04 for new precip. Surrounding reports of 0.00's indicate this could be a date error. It appears 6/30 and 7/1 reports were switched during submission. Changed report of 0.04 to NA until observer can be contacted to verify. Submission Time Before EDIT: 7/01/2018 10:52 AM CoCoSTAFF DNT}
7/1/2018 6:00 AM M 0.0 M M M {EDIT: observer reported 0.00 for new precip. Surrounding reports of precip indicate this could be a date error. It appears 6/30 and 7/1 reports were switched during submission. Changed report of 0.00 to NA until observer can be contacted to verify. Submission Time Before EDIT: 7/01/2018 10:51 AM CoCoSTAFF DNT}
7/2/2018 6:00 AM 0.00 0.0 M M M
7/3/2018 6:00 AM 0.00 0.0 M M M
7/4/2018 6:00 AM 0.00 0.0 M M M
7/5/2018 6:00 AM 0.02 M M M M
7/6/2018 6:00 AM 0.24 M M M M
7/7/2018 6:00 AM 0.00 0.0 M M M
7/8/2018 6:00 AM 0.00 0.0 M M M
7/9/2018 6:00 AM 0.00 0.0 M M M
7/10/2018 6:00 AM 0.00 0.0 M M M
7/22/2018 6:00 AM 0.00 0.0 M M M
7/23/2018 6:00 AM 0.13 M M M M
7/24/2018 6:00 AM 0.34 M M M M
7/25/2018 6:00 AM 0.00 0.0 M M M
7/26/2018 6:00 AM 0.16 M M M M
7/27/2018 6:00 AM 0.29 M M M M
7/28/2018 6:00 AM 0.06 M M M M
7/29/2018 6:00 AM 0.06 M M M M
7/30/2018 6:00 AM 0.00 0.0 M M M
7/31/2018 6:00 AM 0.00 0.0 M M M
8/1/2018 6:00 AM 0.00 0.0 M M M
8/2/2018 6:00 AM 0.00 0.0 M M M
8/3/2018 6:00 AM 0.02 M M M M
8/4/2018 6:00 AM 0.00 0.0 M M M
8/5/2018 6:00 AM 0.00 0.0 M M M
8/6/2018 6:00 AM T 0.0 M M M
8/7/2018 6:00 AM T 0.0 M M M
8/8/2018 6:00 AM T M M M M
8/9/2018 6:00 AM 0.00 0.0 M M M
8/10/2018 6:00 AM 0.00 0.0 M M M
8/11/2018 6:00 AM 0.00 0.0 M M M
8/12/2018 6:00 AM 0.00 0.0 M M M
8/13/2018 6:00 AM 0.00 0.0 M M M
8/18/2018 6:00 AM 0.00 0.0 M M M
8/19/2018 6:00 AM 0.58 M M M M
8/20/2018 6:00 AM 0.00 0.0 M M M
8/21/2018 6:00 AM 0.00 0.0 M M M
8/22/2018 6:00 AM 0.05 M M M M
8/23/2018 6:00 AM 0.00 0.0 M M M
8/24/2018 6:00 AM 0.00 0.0 M M M
8/25/2018 6:00 AM 0.00 0.0 M M M
8/26/2018 6:00 AM 0.00 0.0 M M M
8/27/2018 6:00 AM 0.00 0.0 M M M
8/28/2018 6:00 AM 0.00 0.0 M M M
8/30/2018 6:00 AM 0.00 0.0 M M M
8/31/2018 6:00 AM 0.00 0.0 M M M
9/1/2018 6:00 AM 0.00 0.0 M M M
9/2/2018 6:00 AM 0.00 0.0 M M M
9/3/2018 6:00 AM 0.00 0.0 M M M
9/4/2018 6:00 AM 0.00 0.0 M M M
9/5/2018 6:00 AM 0.94 M M M M
9/6/2018 6:00 AM 0.07 M M M M
9/7/2018 6:00 AM 0.03 0.0 M M M
9/15/2018 6:00 AM 0.00 0.0 M M M
9/22/2018 6:00 AM 0.00 0.0 M M M
9/23/2018 6:00 AM 0.00 0.0 M M M
9/24/2018 6:00 AM 0.00 0.0 M M M
9/25/2018 6:00 AM 0.00 0.0 M M M
9/26/2018 6:00 AM 0.00 0.0 M M M
9/30/2018 6:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
7/11/2018 7/21/2018 6:00 AM 11 0.31 M M
8/14/2018 8/17/2018 6:00 AM 4 0.08 M M
9/8/2018 9/14/2018 6:00 AM 7 0.00 M M
9/16/2018 9/21/2018 6:00 AM 6 0.03 M M
9/27/2018 9/29/2018 6:00 AM 3 0.00 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
5/13/2018 8:30 PM 3/8" 1/4" Pea Size Rice Hard 25 3min minor leaf damage.shredded leaves Continuous False Same time as rain After smaller hail 10-20
5/18/2018 3:00 PM 1/2" Grape NA 1/4" Pea Size Hard 20 3min shredded leaves Continuous True After rain After smaller hail
6/18/2018 7:15 PM 1 1/2" Ping Pong Ball Size 3/8" 1/4" Pea Size Hard|Clear Ice|White Ice 15 3min shredded leaves.car dents Continuous False Same time as rain After smaller hail 10-20