Station Overview Station Location
Station Number CO-BO-321 Latitude 40.0022315979004
Station Name Boulder 1.7 S Longitude -105.254951477051
County Boulder Elevation (ft) 5345



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 12 1.35 1.12 8 1.12 8 0.00 0 0 4 1 6.9 3 2
Nov 12 1.04 0.29 23 0.29 23 0.00 0 0 1 0 0.0 0 0
Dec 12 0.80 0.12 19 0.12 19 0.00 0 0 2 0 3.0 2 2
Jan 13 0.63 0.20 4 0.20 4 0.00 0 0 1 0 1.6 1 1
Feb 13 0.65 0.55 20 0.55 20 0.00 0 0 4 3 7.0 4 4
March 13 1.89 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 13 2.38 2.00 8 2.00 8 0.00 0 0 7 0 18.7 4 6
May 13 2.71 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 13 2.26 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 13 1.64 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 13 1.77 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 13 1.58 14.21 8 14.21 8 0.00 0 0 6 1 0.0 0 0
Water Year Totals: 18.70" 18.49" 90 days 18.49" 90 0.00" 0 days 0 25 days 5 days 37.2" 14 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
10/1/2012 T
10/2/2012 0.00
10/3/2012 0.00
10/4/2012 0.00
10/5/2012 0.02
10/6/2012 0.10
10/7/2012
10/8/2012
10/9/2012
10/10/2012
10/11/2012
10/12/2012
10/13/2012
10/14/2012
10/15/2012
10/16/2012
10/17/2012
10/18/2012
10/19/2012
10/20/2012
10/21/2012
10/22/2012
10/23/2012
10/24/2012
10/25/2012 0.74
10/26/2012 0.26
10/27/2012
10/28/2012
10/29/2012
10/30/2012
10/31/2012
11/1/2012
11/2/2012
11/3/2012
11/4/2012
11/5/2012
11/6/2012
11/7/2012 0.00
11/8/2012 0.00
11/9/2012 0.00
11/10/2012 0.00
11/11/2012 0.29
11/12/2012 0.00
11/13/2012 0.00
11/14/2012 0.00
11/15/2012 0.00
11/16/2012
11/17/2012 0.00
11/18/2012 0.00
11/19/2012 0.00
11/20/2012 0.00
11/21/2012 0.00
11/22/2012 0.00
11/23/2012 0.00
11/24/2012 0.00
11/25/2012 0.00
11/26/2012 0.00
11/27/2012 0.00
11/28/2012 0.00
11/29/2012 0.00
11/30/2012 0.00
12/1/2012 0.00
12/2/2012 0.00
12/3/2012 0.00
12/4/2012 0.00
12/5/2012 0.00
12/6/2012 0.00
12/7/2012 0.00
12/8/2012 0.00
12/9/2012 0.00
12/10/2012 0.00
12/11/2012
12/12/2012 0.00
12/13/2012 0.00
12/14/2012 0.00
12/15/2012 0.00
12/16/2012 0.00
12/17/2012 0.00
12/18/2012 0.00
12/19/2012 0.08
12/20/2012 0.04
12/21/2012
12/22/2012
12/23/2012
12/24/2012
12/25/2012
12/26/2012
12/27/2012
12/28/2012
12/29/2012
12/30/2012
12/31/2012
Day of YearDaily PrcpMultiday Prcp
1/1/2013
1/2/2013
1/3/2013
1/4/2013
1/5/2013
1/6/2013
1/7/2013
1/8/2013
1/9/2013
1/10/2013
1/11/2013
1/12/2013
1/13/2013
1/14/2013
1/15/2013
1/16/2013
1/17/2013
1/18/2013
1/19/2013
1/20/2013
1/21/2013
1/22/2013
1/23/2013
1/24/2013
1/25/2013
1/26/2013
1/27/2013
1/28/2013 0.00
1/29/2013 0.20
1/30/2013 0.00
1/31/2013 0.00
2/1/2013 0.00
2/2/2013 0.00
2/3/2013 0.00
2/4/2013 0.00
2/5/2013 0.00
2/6/2013 0.00
2/7/2013 T
2/8/2013 0.00
2/9/2013 0.00
2/10/2013 0.01
2/11/2013 T
2/12/2013 T
2/13/2013 0.00
2/14/2013 0.00
2/15/2013
2/16/2013
2/17/2013
2/18/2013 0.00
2/19/2013 0.00
2/20/2013 0.00
2/21/2013 0.36
2/22/2013 0.06
2/23/2013
2/24/2013 0.12
2/25/2013
2/26/2013
2/27/2013
2/28/2013
3/1/2013
3/2/2013
3/3/2013
3/4/2013
3/5/2013
3/6/2013
3/7/2013
3/8/2013
3/9/2013
3/10/2013
3/11/2013
3/12/2013
3/13/2013
3/14/2013
3/15/2013
3/16/2013
3/17/2013
3/18/2013
3/19/2013
3/20/2013
3/21/2013
3/22/2013
3/23/2013
3/24/2013
3/25/2013
3/26/2013
3/27/2013
3/28/2013
3/29/2013
3/30/2013
3/31/2013
Day of YearDaily PrcpMultiday Prcp
4/1/2013
4/2/2013
4/3/2013
4/4/2013
4/5/2013
4/6/2013
4/7/2013
4/8/2013
4/9/2013 0.38
4/10/2013 0.30
4/11/2013
4/12/2013
4/13/2013
4/14/2013 0.14
4/15/2013 0.10
4/16/2013
4/17/2013 0.08
4/18/2013
4/19/2013
4/20/2013
4/21/2013
4/22/2013
4/23/2013 0.95
4/24/2013 0.05
4/25/2013 0.00
4/26/2013
4/27/2013
4/28/2013
4/29/2013
4/30/2013
5/1/2013
5/2/2013
5/3/2013
5/4/2013
5/5/2013
5/6/2013
5/7/2013
5/8/2013
5/9/2013
5/10/2013
5/11/2013
5/12/2013
5/13/2013
5/14/2013
5/15/2013
5/16/2013
5/17/2013
5/18/2013
5/19/2013
5/20/2013
5/21/2013
5/22/2013
5/23/2013
5/24/2013
5/25/2013
5/26/2013
5/27/2013
5/28/2013
5/29/2013
5/30/2013
5/31/2013
6/1/2013
6/2/2013
6/3/2013
6/4/2013
6/5/2013
6/6/2013
6/7/2013
6/8/2013
6/9/2013
6/10/2013
6/11/2013
6/12/2013
6/13/2013
6/14/2013
6/15/2013
6/16/2013
6/17/2013
6/18/2013
6/19/2013
6/20/2013
6/21/2013
6/22/2013
6/23/2013
6/24/2013
6/25/2013
6/26/2013
6/27/2013
6/28/2013
6/29/2013
6/30/2013
Day of YearDaily PrcpMultiday Prcp
7/1/2013
7/2/2013
7/3/2013
7/4/2013
7/5/2013
7/6/2013
7/7/2013
7/8/2013
7/9/2013
7/10/2013
7/11/2013
7/12/2013
7/13/2013
7/14/2013
7/15/2013
7/16/2013
7/17/2013
7/18/2013
7/19/2013
7/20/2013
7/21/2013
7/22/2013
7/23/2013
7/24/2013
7/25/2013
7/26/2013
7/27/2013
7/28/2013
7/29/2013
7/30/2013
7/31/2013
8/1/2013
8/2/2013
8/3/2013
8/4/2013
8/5/2013
8/6/2013
8/7/2013
8/8/2013
8/9/2013
8/10/2013
8/11/2013
8/12/2013
8/13/2013
8/14/2013
8/15/2013
8/16/2013
8/17/2013
8/18/2013
8/19/2013
8/20/2013
8/21/2013
8/22/2013
8/23/2013
8/24/2013
8/25/2013
8/26/2013
8/27/2013
8/28/2013
8/29/2013
8/30/2013
8/31/2013
9/1/2013
9/2/2013
9/3/2013
9/4/2013
9/5/2013
9/6/2013
9/7/2013
9/8/2013
9/9/2013 T
9/10/2013 1.20
9/11/2013 1.10
9/12/2013 7.38
9/13/2013 4.37
9/14/2013 0.08
9/15/2013 0.08
9/16/2013 M
9/17/2013 0.00
9/18/2013
9/19/2013
9/20/2013
9/21/2013
9/22/2013
9/23/2013
9/24/2013
9/25/2013
9/26/2013
9/27/2013
9/28/2013
9/29/2013
9/30/2013



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2012 7:00 AM T M M M M
10/2/2012 7:00 AM 0.00 0.0 M M M
10/3/2012 7:00 AM 0.00 0.0 M M M
10/4/2012 7:00 AM 0.00 0.0 M M M
10/5/2012 7:00 AM 0.02 0.1 0.02 0.0 0.00 Snow mixed with frozen pellets falling at time of measurement
10/6/2012 7:00 AM 0.10 0.0 0.00 0.0 0.00
10/25/2012 7:00 AM 0.74 3.8 0.58 3.8 0.58 Rain switching to snow by 8pm
10/26/2012 7:00 AM 0.26 3.0 0.26 5.0 M
11/7/2012 7:00 AM 0.00 0.0 M M M Submitted via CoCoRaHS Observer for Android
11/8/2012 7:00 AM 0.00 0.0 M M M
11/9/2012 7:00 AM 0.00 0.0 M M M Submitted via CoCoRaHS Observer for Android
11/10/2012 7:00 AM 0.00 0.0 M M M Submitted via CoCoRaHS Observer for Android
11/11/2012 7:00 AM 0.29 T M T M Snow accumulation has all frozen together into a hard sheet of ice
11/12/2012 7:00 AM 0.00 0.0 M 0.0 M
11/13/2012 7:00 AM 0.00 0.0 M 0.0 M
11/14/2012 7:00 AM 0.00 0.0 M 0.0 M
11/15/2012 7:00 AM 0.00 0.0 M 0.0 0.00 Very light snow falling this morning, at this rate no accumualation would be expected
11/17/2012 7:00 AM 0.00 0.0 M M M
11/18/2012 7:00 AM 0.00 0.0 M M M
11/19/2012 7:00 AM 0.00 0.0 M M M
11/20/2012 7:00 AM 0.00 0.0 M M M
11/21/2012 7:00 AM 0.00 0.0 M M M
11/22/2012 7:00 AM 0.00 0.0 M M M
11/23/2012 7:00 AM 0.00 0.0 M 0.0 M
11/24/2012 7:00 AM 0.00 0.0 M M M
11/25/2012 7:00 AM 0.00 0.0 M M M
11/26/2012 7:00 AM 0.00 0.0 M M M
11/27/2012 7:00 AM 0.00 0.0 M 0.0 0.00 Very light snow falling, no accumulation or even road wetting, in the morning but gauge was dry by 7am.
11/28/2012 7:00 AM 0.00 0.0 M M M
11/29/2012 7:00 AM 0.00 0.0 M M M
11/30/2012 7:00 AM 0.00 0.0 M M M
12/1/2012 7:00 AM 0.00 0.0 M M M
12/2/2012 7:00 AM 0.00 0.0 M M M
12/3/2012 7:00 AM 0.00 0.0 M M M
12/4/2012 7:00 AM 0.00 0.0 M M M
12/5/2012 7:00 AM 0.00 0.0 M M M
12/6/2012 7:00 AM 0.00 0.0 M M M
12/7/2012 7:00 AM 0.00 0.0 M M M
12/8/2012 7:00 AM 0.00 0.0 M M M
12/9/2012 7:00 AM 0.00 0.0 M M M
12/10/2012 7:00 AM 0.00 0.0 M M M Windy
12/12/2012 7:00 AM 0.00 0.0 M M M
12/13/2012 7:00 AM 0.00 0.0 M M M
12/14/2012 7:00 AM 0.00 0.0 M M M
12/15/2012 7:00 AM 0.00 0.0 M M M
12/16/2012 7:00 AM 0.00 0.0 M M M
12/17/2012 7:00 AM 0.00 0.0 M M M VERY windy night
12/18/2012 7:00 AM 0.00 0.0 M M M
12/19/2012 7:00 AM 0.08 2.0 0.08 2.0 0.08 Snow is light with small flakes, no wind
12/20/2012 7:00 AM 0.04 1.0 0.04 2.8 M
1/28/2013 7:00 AM 0.00 0.0 M M M
1/29/2013 7:00 AM 0.20 1.6 0.28 1.5 0.28 (edit, original obs amount 2.00" changed to NA. Observer will be contacted for actual amount.
1/30/2013 7:00 AM 0.00 0.0 M M M
1/31/2013 7:00 AM 0.00 0.0 M M M
2/1/2013 7:00 AM 0.00 0.0 M M M
2/2/2013 7:00 AM 0.00 0.0 M M M
2/3/2013 7:00 AM 0.00 0.0 M M M
2/4/2013 7:00 AM 0.00 0.0 M M M
2/5/2013 7:00 AM 0.00 0.0 M M M
2/6/2013 7:00 AM 0.00 0.0 M M M
2/7/2013 7:00 AM T 0.0 0.00 0.0 0.00
2/8/2013 7:00 AM 0.00 0.0 M M M
2/9/2013 7:00 AM 0.00 0.0 M M M
2/10/2013 7:00 AM 0.01 0.1 0.01 0.1 0.01
2/11/2013 7:00 AM T T T T T
2/12/2013 7:00 AM T T T 0.0 0.00
2/13/2013 7:00 AM 0.00 0.0 M M M
2/14/2013 7:00 AM 0.00 0.0 M M M
2/18/2013 7:00 AM 0.00 0.0 M M M
2/19/2013 7:00 AM 0.00 0.0 M M M
2/20/2013 7:00 AM 0.00 0.0 M M M
2/21/2013 7:00 AM 0.36 4.0 M 4.0 M
2/22/2013 7:00 AM 0.06 0.7 M 4.1 M
2/24/2013 7:00 AM 0.12 2.2 M 5.0 M
4/9/2013 7:00 AM 0.38 4.6 0.27 4.6 0.27
4/10/2013 7:00 AM 0.30 4.2 0.30 8.5 0.55
4/14/2013 7:00 AM 0.14 0.0 0.00 0.0 0.00
4/15/2013 7:00 AM 0.10 1.4 0.10 1.4 0.10
4/17/2013 7:00 AM 0.08 T M 6.2 M
4/23/2013 7:00 AM 0.95 8.5 0.95 8.5 0.95
4/24/2013 7:00 AM 0.05 M M 3.8 M
4/25/2013 7:00 AM 0.00 0.0 M M M
9/9/2013 7:00 AM T M M M M data provided by observer CSPEARS
9/10/2013 7:00 AM 1.20 M M M M
9/11/2013 7:00 AM 1.10 M M M M
9/12/2013 7:00 AM 7.38 M M M M Most rain seen in years. All drainages flooding. Never seen it rain this hard here or anywhere else.
9/13/2013 7:00 AM 4.37 M M M M
9/14/2013 7:00 AM 0.08 M M M M
9/15/2013 7:00 AM 0.08 M M M M
9/16/2013 7:00 AM M 0.0 M M M data provided by observer CSPEARS. Changed daily precip from 0.0 to NA. CK
9/17/2013 7:00 AM 0.00 0.0 M M M data provided by observer CSPEARS



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