Station Overview Station Location
Station Number CO-BO-282 Latitude 39.964607
Station Name Boulder 4.4 S Longitude -105.236213
County Boulder Elevation (ft) 5440



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 1.34 2.10 20 2.10 20 0.00 0 0 6 1 6.0 2 2
Nov 17 1.00 0.40 21 0.40 21 0.00 0 0 3 3 3.2 2 2
Dec 17 0.82 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 18 0.60 0.54 4 0.54 4 0.00 0 0 2 1 6.5 2 2
Feb 18 0.64 0.89 8 0.89 8 0.00 0 0 5 1 13.0 4 4
March 18 1.90 1.15 4 1.15 4 0.00 0 0 3 1 4.7 2 2
April 18 2.41 0.85 4 0.85 4 0.00 0 0 3 1 0.0 0 0
May 18 2.64 6.29 12 6.29 12 0.00 0 0 12 0 0.0 0 0
June 18 2.14 1.64 5 1.64 5 0.00 0 0 4 1 0.0 0 0
July 18 1.65 0.85 7 0.85 7 0.00 0 0 6 1 0.0 0 0
Aug 18 1.88 0.52 3 0.52 3 0.00 0 0 3 0 0.0 0 0
Sept 18 1.51 0.90 1 0.90 1 0.00 0 0 1 0 0.0 0 0
Water Year Totals: 18.53" 16.13" 89 days 16.13" 89 0.00" 0 days 0 48 days 10 days 33.4" 12 days 12 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 0.11
10/2/2017 0.74
10/3/2017 0.59
10/4/2017 0.00
10/5/2017 0.00
10/6/2017 0.00
10/7/2017 0.00
10/8/2017
10/9/2017 0.52
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 0.00
10/21/2017 0.00
10/22/2017 0.00
10/23/2017 0.00
10/24/2017 0.00
10/25/2017 0.00
10/26/2017 0.00
10/27/2017 0.12
10/28/2017 0.00
10/29/2017 0.00
10/30/2017 T
10/31/2017 0.02
11/1/2017 0.00
11/2/2017 0.00
11/3/2017 0.00
11/4/2017 0.00
11/5/2017 T
11/6/2017 T
11/7/2017 0.28
11/8/2017 0.02
11/9/2017 0.00
11/10/2017 0.00
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.00
11/14/2017 0.00
11/15/2017 0.00
11/16/2017 0.00
11/17/2017 0.00
11/18/2017 0.10
11/19/2017 0.00
11/20/2017 0.00
11/21/2017 T
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 T
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018 0.50
1/22/2018 0.04
1/23/2018 0.00
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 T
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018 0.12
2/11/2018 0.10
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018 0.02
2/20/2018 0.53
2/21/2018 0.00
2/22/2018 0.00
2/23/2018
2/24/2018 0.12
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 T
3/17/2018
3/18/2018
3/19/2018 0.50
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018 0.15
3/27/2018 0.50
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
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018 0.20
4/22/2018 0.15
4/23/2018
4/24/2018 T
4/25/2018 0.50
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018 0.11
5/3/2018 1.20
5/4/2018 0.58
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018 0.15
5/13/2018 0.54
5/14/2018 0.77
5/15/2018 0.10
5/16/2018
5/17/2018
5/18/2018
5/19/2018 2.10
5/20/2018 0.43
5/21/2018 0.17
5/22/2018
5/23/2018 0.06
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018 0.08
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018 T
6/17/2018 0.16
6/18/2018 0.81
6/19/2018 0.53
6/20/2018
6/21/2018
6/22/2018
6/23/2018
6/24/2018
6/25/2018 0.14
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018 T
7/6/2018 0.05
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018 0.30
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018 0.13
7/24/2018
7/25/2018
7/26/2018 0.09
7/27/2018 0.23
7/28/2018
7/29/2018 0.05
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018 0.17
8/16/2018
8/17/2018
8/18/2018
8/19/2018 0.30
8/20/2018
8/21/2018
8/22/2018 0.05
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018 0.90
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 7:00 AM 0.11 M M M M
10/2/2017 7:00 AM 0.74 M M M M
10/3/2017 7:00 AM 0.59 M M M M
10/4/2017 7:00 AM 0.00 0.0 M M M
10/5/2017 7:00 AM 0.00 0.0 M M M
10/6/2017 7:00 AM 0.00 0.0 M M M
10/7/2017 7:00 AM 0.00 0.0 M M M
10/9/2017 9:00 AM 0.52 5.0 M 5.0 M (edit: daily precip initially recorded as 5.20". change to NA as this appears to be a decimal error. observer will be contacted. PG) (confirmed as 0.52". PG)
10/20/2017 7:00 AM 0.00 0.0 M M M
10/21/2017 7:00 AM 0.00 0.0 M M M
10/22/2017 7:00 AM 0.00 0.0 M M M
10/23/2017 7:00 AM 0.00 0.0 M M M
10/24/2017 7:00 AM 0.00 0.0 M M M
10/25/2017 7:00 AM 0.00 0.0 M M M
10/26/2017 7:00 AM 0.00 0.0 M M M
10/27/2017 7:00 AM 0.12 1.0 M 1.0 M
10/28/2017 7:00 AM 0.00 0.0 M M M
10/29/2017 7:00 AM 0.00 0.0 M M M
10/30/2017 7:00 AM T M M M M
10/31/2017 7:00 AM 0.02 T M T M
11/1/2017 7:00 AM 0.00 0.0 M M M
11/2/2017 7:00 AM 0.00 0.0 M M M
11/3/2017 7:00 AM 0.00 0.0 M M M
11/4/2017 7:00 AM 0.00 0.0 M M M
11/5/2017 7:00 AM T T M T M
11/6/2017 7:00 AM T T M T M
11/7/2017 7:00 AM 0.28 2.7 M 3.5 M
11/8/2017 7:00 AM 0.02 0.5 M 2.8 M
11/9/2017 7:00 AM 0.00 0.0 M M M
11/10/2017 7:00 AM 0.00 0.0 M M M
11/11/2017 7:00 AM 0.00 0.0 M M M
11/12/2017 7:00 AM 0.00 0.0 M M M
11/13/2017 7:00 AM 0.00 0.0 M M M
11/14/2017 7:00 AM 0.00 0.0 M M M
11/15/2017 7:00 AM 0.00 0.0 M M M
11/16/2017 7:00 AM 0.00 0.0 M M M
11/17/2017 7:00 AM 0.00 0.0 M M M
11/18/2017 7:00 AM 0.10 M M M M
11/19/2017 7:00 AM 0.00 0.0 M M M
11/20/2017 7:00 AM 0.00 0.0 M M M
11/21/2017 7:00 AM T M M M M
1/15/2018 7:00 AM T M M M M
1/21/2018 9:00 AM 0.50 4.5 M 4.5 M
1/22/2018 9:00 AM 0.04 2.0 M 2.0 M
1/23/2018 7:00 AM 0.00 0.0 M M M
2/4/2018 7:00 AM T T M T M
2/10/2018 9:00 AM 0.12 2.5 M 2.5 M
2/11/2018 7:00 AM 0.10 M M M M
2/19/2018 9:00 AM 0.02 1.0 M 1.0 M
2/20/2018 7:00 AM 0.53 7.5 M 7.5 M
2/21/2018 7:00 AM 0.00 0.0 M M M
2/22/2018 7:00 AM 0.00 0.0 M M M
2/24/2018 7:00 AM 0.12 2.0 M 3.5 M
3/16/2018 7:00 AM T M M M M
3/19/2018 7:00 AM 0.50 1.2 M 1.2 M
3/26/2018 7:00 AM 0.15 M M M M
3/27/2018 7:00 AM 0.50 3.5 M 3.5 M
4/21/2018 7:00 AM 0.20 T M T M
4/22/2018 7:00 AM 0.15 M M M M
4/24/2018 7:00 AM T T M M M
4/25/2018 7:00 AM 0.50 M M M M
5/2/2018 9:00 AM 0.11 M M M M
5/3/2018 7:00 AM 1.20 M M M M
5/4/2018 7:00 AM 0.58 M M M M
5/12/2018 7:00 AM 0.15 M M M M
5/13/2018 7:00 AM 0.54 M M M M
5/14/2018 7:00 AM 0.77 M M M M
5/15/2018 7:00 AM 0.10 M M M M
5/19/2018 7:00 AM 2.10 M M M M Hail destroyed my veggie and perennial gardens. Stripped trees of leaves and needles. Had hail on ground at least an inch all over after it was over. Worst I have seen in this area in 39 years. Cleanup will be a long process.
5/20/2018 7:00 AM 0.43 M M M M
5/21/2018 7:00 AM 0.17 M M M M
5/23/2018 7:00 AM 0.06 M M M M
5/29/2018 7:00 AM 0.08 M M M M
6/16/2018 7:00 AM T M M M M
6/17/2018 7:00 AM 0.16 M M M M
6/18/2018 8:30 AM 0.81 M M M M
6/19/2018 7:00 AM 0.53 M M M M Hail last night for about 15 min. Not as heavy as the hail on May 19. Some stones about 1/2". Good rain for about 1 hour.
6/25/2018 7:00 AM 0.14 M M M M
7/5/2018 7:00 AM T M M M M
7/6/2018 7:00 AM 0.05 M M M M
7/16/2018 7:00 AM 0.30 M M M M
7/23/2018 7:00 AM 0.13 M M M M
7/26/2018 7:00 AM 0.09 M M M M
7/27/2018 7:00 AM 0.23 M M M M
7/29/2018 7:00 AM 0.05 M M M M
8/15/2018 7:00 AM 0.17 M M M M
8/19/2018 7:00 AM 0.30 M M M M
8/22/2018 7:00 AM 0.05 M M M M
9/5/2018 7:00 AM 0.90 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