Station Overview Station Location
Station Number CO-BO-19 Latitude 40.0046
Station Name Boulder 4.6 E Longitude -105.1715
County Boulder Elevation (ft) 5315



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 10 1.25 1.05 9 1.05 9 0.00 0 0 6 1 0.0 0 0
Nov 10 0.97 0.34 6 0.34 6 0.00 0 0 3 1 1.5 3 1
Dec 10 0.69 0.02 4 0.02 4 0.00 0 0 2 0 0.2 1 0
Jan 11 0.54 0.50 5 0.50 5 0.00 0 0 2 0 8.9 3 4
Feb 11 0.53 0.94 12 0.94 12 0.00 0 0 7 0 10.6 7 9
March 11 1.75 0.21 7 0.21 7 0.00 0 0 4 2 1.0 1 1
April 11 2.08 1.61 7 1.61 7 0.00 0 0 5 1 2.8 3 1
May 11 2.33 0.12 2 0.12 2 0.00 0 0 1 0 0.0 0 0
June 11 1.78 1.05 7 1.05 7 0.00 0 0 4 0 0.0 0 0
July 11 1.62 3.93 10 1.68 6 2.25 4 2 5 0 0.0 0 0
Aug 11 1.56 0.15 1 0.15 1 0.00 0 0 1 0 0.0 0 0
Sept 11 1.42 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 16.52" 9.92" 70 days 7.67" 66 2.25" 4 days 2 40 days 5 days 25.0" 18 days 16 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
10/1/2010
10/2/2010
10/3/2010
10/4/2010
10/5/2010
10/6/2010 0.00
10/7/2010 0.47
10/8/2010
10/9/2010 0.00
10/10/2010 T
10/11/2010 0.11
10/12/2010 0.10
10/13/2010 0.31
10/14/2010
10/15/2010
10/16/2010
10/17/2010
10/18/2010
10/19/2010 0.03
10/20/2010
10/21/2010
10/22/2010
10/23/2010 0.03
10/24/2010
10/25/2010
10/26/2010
10/27/2010
10/28/2010
10/29/2010
10/30/2010
10/31/2010
11/1/2010
11/2/2010
11/3/2010
11/4/2010
11/5/2010
11/6/2010
11/7/2010
11/8/2010
11/9/2010
11/10/2010 0.19
11/11/2010 0.12
11/12/2010 0.03
11/13/2010 0.00
11/14/2010
11/15/2010
11/16/2010 T
11/17/2010
11/18/2010
11/19/2010
11/20/2010
11/21/2010
11/22/2010 M
11/23/2010
11/24/2010
11/25/2010
11/26/2010
11/27/2010
11/28/2010 0.00
11/29/2010
11/30/2010
12/1/2010
12/2/2010 0.00
12/3/2010
12/4/2010
12/5/2010
12/6/2010
12/7/2010
12/8/2010
12/9/2010
12/10/2010
12/11/2010
12/12/2010
12/13/2010
12/14/2010
12/15/2010
12/16/2010
12/17/2010 0.01
12/18/2010 0.01
12/19/2010 0.00
12/20/2010
12/21/2010
12/22/2010
12/23/2010
12/24/2010
12/25/2010
12/26/2010
12/27/2010
12/28/2010
12/29/2010
12/30/2010
12/31/2010
Day of YearDaily PrcpMultiday Prcp
1/1/2011
1/2/2011
1/3/2011 0.00
1/4/2011
1/5/2011
1/6/2011
1/7/2011
1/8/2011
1/9/2011 M
1/10/2011 0.37
1/11/2011 0.00
1/12/2011
1/13/2011
1/14/2011
1/15/2011
1/16/2011
1/17/2011 0.00
1/18/2011
1/19/2011
1/20/2011 0.13
1/21/2011
1/22/2011
1/23/2011
1/24/2011
1/25/2011
1/26/2011
1/27/2011
1/28/2011
1/29/2011
1/30/2011
1/31/2011
2/1/2011 0.09
2/2/2011 0.01
2/3/2011
2/4/2011 0.04
2/5/2011 0.00
2/6/2011 0.45
2/7/2011 0.00
2/8/2011 0.27
2/9/2011 0.06
2/10/2011 0.00
2/11/2011
2/12/2011
2/13/2011 0.00
2/14/2011
2/15/2011
2/16/2011
2/17/2011 0.00
2/18/2011
2/19/2011
2/20/2011
2/21/2011
2/22/2011
2/23/2011
2/24/2011
2/25/2011 M
2/26/2011 0.02
2/27/2011
2/28/2011
3/1/2011
3/2/2011
3/3/2011
3/4/2011
3/5/2011
3/6/2011
3/7/2011 0.01
3/8/2011 0.01
3/9/2011 T
3/10/2011
3/11/2011
3/12/2011 0.00
3/13/2011
3/14/2011
3/15/2011
3/16/2011
3/17/2011
3/18/2011 0.04
3/19/2011
3/20/2011
3/21/2011
3/22/2011
3/23/2011
3/24/2011
3/25/2011
3/26/2011
3/27/2011
3/28/2011 T
3/29/2011 0.15
3/30/2011
3/31/2011
Day of YearDaily PrcpMultiday Prcp
4/1/2011
4/2/2011
4/3/2011
4/4/2011 0.20
4/5/2011
4/6/2011
4/7/2011 T
4/8/2011
4/9/2011
4/10/2011 0.17
4/11/2011
4/12/2011
4/13/2011
4/14/2011 1.04
4/15/2011 0.02
4/16/2011 0.00
4/17/2011
4/18/2011
4/19/2011 0.18
4/20/2011
4/21/2011
4/22/2011
4/23/2011
4/24/2011
4/25/2011
4/26/2011
4/27/2011
4/28/2011
4/29/2011
4/30/2011
5/1/2011
5/2/2011
5/3/2011
5/4/2011
5/5/2011
5/6/2011
5/7/2011
5/8/2011
5/9/2011
5/10/2011
5/11/2011
5/12/2011
5/13/2011
5/14/2011
5/15/2011
5/16/2011
5/17/2011
5/18/2011
5/19/2011
5/20/2011
5/21/2011
5/22/2011
5/23/2011
5/24/2011
5/25/2011 0.12
5/26/2011
5/27/2011
5/28/2011
5/29/2011
5/30/2011 0.00
5/31/2011
6/1/2011
6/2/2011
6/3/2011
6/4/2011
6/5/2011
6/6/2011
6/7/2011
6/8/2011
6/9/2011 0.14
6/10/2011
6/11/2011
6/12/2011 0.00
6/13/2011
6/14/2011
6/15/2011
6/16/2011
6/17/2011 0.00
6/18/2011
6/19/2011 0.00
6/20/2011 0.86
6/21/2011
6/22/2011
6/23/2011
6/24/2011 0.04
6/25/2011
6/26/2011
6/27/2011
6/28/2011
6/29/2011
6/30/2011 0.01
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.13
7/2/2011 0.07
7/3/2011
7/4/2011
7/5/2011
7/6/2011 0.01
7/7/2011 **
7/8/2011 M 1.38
7/9/2011 **
7/10/2011 0.87
7/11/2011 0.85
7/12/2011 0.62
7/13/2011
7/14/2011
7/15/2011
7/16/2011
7/17/2011
7/18/2011
7/19/2011
7/20/2011
7/21/2011
7/22/2011
7/23/2011
7/24/2011 0.00
7/25/2011
7/26/2011
7/27/2011
7/28/2011
7/29/2011
7/30/2011
7/31/2011
8/1/2011
8/2/2011
8/3/2011
8/4/2011
8/5/2011
8/6/2011
8/7/2011
8/8/2011
8/9/2011
8/10/2011
8/11/2011
8/12/2011
8/13/2011
8/14/2011
8/15/2011
8/16/2011
8/17/2011 0.15
8/18/2011
8/19/2011
8/20/2011
8/21/2011
8/22/2011
8/23/2011
8/24/2011
8/25/2011
8/26/2011
8/27/2011
8/28/2011
8/29/2011
8/30/2011
8/31/2011
9/1/2011
9/2/2011
9/3/2011
9/4/2011
9/5/2011
9/6/2011
9/7/2011
9/8/2011
9/9/2011
9/10/2011
9/11/2011
9/12/2011
9/13/2011
9/14/2011
9/15/2011
9/16/2011
9/17/2011
9/18/2011
9/19/2011
9/20/2011
9/21/2011
9/22/2011
9/23/2011
9/24/2011
9/25/2011
9/26/2011
9/27/2011
9/28/2011
9/29/2011
9/30/2011



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/6/2010 7:00 AM 0.00 0.0 M 0.0 M
10/7/2010 7:00 AM 0.47 0.0 M 0.0 M
10/9/2010 7:00 AM 0.00 0.0 M 0.0 M
10/10/2010 7:00 AM T 0.0 M 0.0 M
10/11/2010 7:00 AM 0.11 0.0 M 0.0 M
10/12/2010 7:00 AM 0.10 0.0 M 0.0 M
10/13/2010 7:00 AM 0.31 0.0 M 0.0 M
10/19/2010 7:00 AM 0.03 0.0 M 0.0 M
10/23/2010 7:00 AM 0.03 0.0 M 0.0 M
11/10/2010 7:00 AM 0.19 0.2 M T M
11/11/2010 7:00 AM 0.12 1.1 M 1.0 M
11/12/2010 7:00 AM 0.03 T M T M
11/13/2010 7:00 AM 0.00 0.0 M 0.0 M
11/16/2010 7:00 AM T T M 0.0 M
11/22/2010 7:00 AM M 0.2 M T M
11/28/2010 7:00 AM 0.00 0.0 M 0.0 M
12/2/2010 7:00 AM 0.00 0.0 M 0.0 M
12/17/2010 7:00 AM 0.01 0.2 M T M
12/18/2010 7:00 AM 0.01 T M T M
12/19/2010 7:00 AM 0.00 0.0 M T M
1/3/2011 7:00 AM 0.00 0.0 M 2.5 M
1/9/2011 8:45 AM M 0.2 M T M
1/10/2011 7:00 AM 0.37 5.7 M 5.5 M
1/11/2011 7:00 AM 0.00 0.0 M 4.5 M
1/17/2011 7:00 AM 0.00 0.0 M T M
1/20/2011 7:00 AM 0.13 3.0 M 3.0 M
2/1/2011 7:00 AM 0.09 1.4 M 1.5 M
2/2/2011 7:00 AM 0.01 0.1 M 1.0 M
2/4/2011 7:00 AM 0.04 T M 1.0 M
2/5/2011 7:00 AM 0.00 0.0 M T M
2/6/2011 8:00 AM 0.45 5.5 M 5.5 M
2/7/2011 7:00 AM 0.00 0.0 M 4.0 M
2/8/2011 7:00 AM 0.27 2.5 M 5.0 M
2/9/2011 7:00 AM 0.06 0.7 M 5.0 M
2/10/2011 7:00 AM 0.00 0.0 M 5.0 M
2/13/2011 7:00 AM 0.00 0.0 M 3.5 M
2/17/2011 7:00 AM 0.00 0.0 M T M
2/25/2011 7:00 AM M 0.2 M T M
2/26/2011 7:00 AM 0.02 0.2 M T M
3/7/2011 7:00 AM 0.01 T M T M
3/8/2011 7:00 AM 0.01 T M T M
3/9/2011 7:00 AM T T M 0.0 M
3/12/2011 7:00 AM 0.00 0.0 M 0.0 M
3/18/2011 7:00 AM 0.04 T M T M
3/28/2011 7:00 AM T T M T M
3/29/2011 7:00 AM 0.15 1.0 M 1.0 M
4/4/2011 7:00 AM 0.20 0.3 M T M
4/7/2011 7:00 AM T 0.0 M 0.0 M
4/10/2011 7:00 AM 0.17 0.1 M T M
4/14/2011 7:00 AM 1.04 2.4 M 2.0 M
4/15/2011 7:00 AM 0.02 T M 0.0 M
4/16/2011 7:00 AM 0.00 0.0 M 0.0 M
4/19/2011 7:00 AM 0.18 0.0 M 0.0 M
5/25/2011 7:00 AM 0.12 0.0 M 0.0 M
5/30/2011 7:00 AM 0.00 0.0 M 0.0 M
6/9/2011 7:00 AM 0.14 0.0 M 0.0 M
6/12/2011 7:00 AM 0.00 0.0 M 0.0 M
6/17/2011 7:00 AM 0.00 0.0 M 0.0 M
6/19/2011 7:00 AM 0.00 0.0 M 0.0 M
6/20/2011 7:00 AM 0.86 0.0 M 0.0 M
6/24/2011 7:00 AM 0.04 0.0 M 0.0 M
6/30/2011 7:00 AM 0.01 0.0 M 0.0 M
7/1/2011 7:00 AM 0.13 0.0 M 0.0 M
7/2/2011 7:00 AM 0.07 0.0 M 0.0 M
7/6/2011 7:00 AM 0.01 0.0 M 0.0 M
7/8/2011 7:00 AM M 0.0 M 0.0 M
7/11/2011 7:00 AM 0.85 0.0 M 0.0 M
7/12/2011 7:00 AM 0.62 0.0 M 0.0 M
7/24/2011 7:00 AM 0.00 0.0 M 0.0 M
8/17/2011 7:00 AM 0.15 0.0 M 0.0 M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
7/7/2011 7/08/2011 8:00 AM 2 1.38 0.0 M
7/9/2011 7/10/2011 8:30 AM 2 0.87 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
1/1/0001 12:00 AM It was around 2:00 or 2:20 am. The hail was still there in the morning. The pattern was lightning, thunder, hail, sounding like it was mixed with rain, blown into the windows somewhat horizontally rather than down to the ground. There was a dusting of snow in the morning too. Rice Rice Rice Soft|Clear Ice|White Ice no damage Intermittent False
7/10/2011 2:19 PM The hail melted quickly. Then we had another hail storm at 5:37 pm with white, soft hail that was rice sized. This only lasted one minute and also melted quickly. So there were 2 hail incidents and 3 different episodes of thunder, lightning and rain. 1/4" Pea Size 1/4" Pea Size Rice Soft|White Ice 2 1min minor leaf damage Continuous True After rain Same time as smaller hail 30-40
1/1/0001 12:00 AM 1/4" Pea Size 1/4" Pea Size Rice Soft|White Ice 1 1min no damage Continuous True After rain Same time as smaller hail