Station Overview Station Location
Station Number CO-BO-351 Latitude 40.0027
Station Name Lafayette 2.3 WNW Longitude -105.141
County Boulder Elevation (ft) 5376



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 16 1.22 0.44 4 0.44 4 0.00 0 0 4 0 0.0 0 0
Nov 16 0.95 0.61 2 0.61 2 0.00 0 0 2 0 4.0 1 0
Dec 16 0.73 0.38 3 0.38 3 0.00 0 0 2 1 4.4 2 3
Jan 17 0.51 0.34 2 0.34 2 0.00 0 0 2 0 3.6 2 2
Feb 17 0.52 0.37 1 0.37 1 0.00 0 0 1 0 4.0 1 1
March 17 1.69 0.41 3 0.41 3 0.00 0 0 3 0 0.0 0 0
April 17 2.02 2.78 9 2.78 9 0.00 0 0 9 0 15.1 4 4
May 17 2.32 6.12 11 6.12 11 0.00 0 0 11 0 2.2 2 1
June 17 1.73 0.36 6 0.36 6 0.00 0 0 4 2 0.0 0 0
July 17 1.61 0.60 4 0.60 4 0.00 0 0 3 1 0.0 0 0
Aug 17 1.57 1.06 10 1.06 10 0.00 0 0 10 0 0.0 0 0
Sept 17 1.45 1.46 7 1.46 7 0.00 0 0 7 0 0.0 0 0
Water Year Totals: 16.32" 14.93" 62 days 14.93" 62 0.00" 0 days 0 58 days 4 days 33.3" 12 days 11 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
10/1/2016
10/2/2016
10/3/2016
10/4/2016
10/5/2016
10/6/2016 0.20
10/7/2016 0.07
10/8/2016
10/9/2016
10/10/2016
10/11/2016
10/12/2016 0.15
10/13/2016
10/14/2016
10/15/2016
10/16/2016
10/17/2016
10/18/2016
10/19/2016 0.02
10/20/2016
10/21/2016
10/22/2016
10/23/2016
10/24/2016
10/25/2016
10/26/2016
10/27/2016
10/28/2016
10/29/2016
10/30/2016
10/31/2016
11/1/2016
11/2/2016
11/3/2016
11/4/2016
11/5/2016
11/6/2016
11/7/2016
11/8/2016
11/9/2016
11/10/2016
11/11/2016
11/12/2016
11/13/2016
11/14/2016
11/15/2016
11/16/2016
11/17/2016
11/18/2016 0.55
11/19/2016
11/20/2016
11/21/2016
11/22/2016 0.06
11/23/2016
11/24/2016
11/25/2016
11/26/2016
11/27/2016
11/28/2016
11/29/2016
11/30/2016
12/1/2016
12/2/2016
12/3/2016
12/4/2016
12/5/2016
12/6/2016
12/7/2016
12/8/2016 M
12/9/2016 T
12/10/2016
12/11/2016 0.03
12/12/2016
12/13/2016
12/14/2016
12/15/2016
12/16/2016
12/17/2016 0.35
12/18/2016
12/19/2016
12/20/2016
12/21/2016
12/22/2016
12/23/2016
12/24/2016
12/25/2016
12/26/2016
12/27/2016
12/28/2016
12/29/2016
12/30/2016
12/31/2016
Day of YearDaily PrcpMultiday Prcp
1/1/2017
1/2/2017
1/3/2017 0.01
1/4/2017
1/5/2017
1/6/2017
1/7/2017
1/8/2017
1/9/2017
1/10/2017
1/11/2017
1/12/2017
1/13/2017
1/14/2017
1/15/2017
1/16/2017 0.33
1/17/2017
1/18/2017
1/19/2017
1/20/2017
1/21/2017
1/22/2017
1/23/2017
1/24/2017
1/25/2017
1/26/2017
1/27/2017
1/28/2017
1/29/2017
1/30/2017
1/31/2017
2/1/2017
2/2/2017
2/3/2017
2/4/2017
2/5/2017
2/6/2017
2/7/2017
2/8/2017
2/9/2017
2/10/2017
2/11/2017
2/12/2017
2/13/2017
2/14/2017
2/15/2017
2/16/2017
2/17/2017
2/18/2017
2/19/2017
2/20/2017
2/21/2017
2/22/2017
2/23/2017
2/24/2017 0.37
2/25/2017
2/26/2017
2/27/2017
2/28/2017
3/1/2017
3/2/2017
3/3/2017
3/4/2017
3/5/2017
3/6/2017
3/7/2017
3/8/2017
3/9/2017
3/10/2017
3/11/2017
3/12/2017
3/13/2017
3/14/2017
3/15/2017
3/16/2017
3/17/2017
3/18/2017
3/19/2017
3/20/2017
3/21/2017
3/22/2017
3/23/2017
3/24/2017 0.20
3/25/2017
3/26/2017
3/27/2017
3/28/2017 0.19
3/29/2017
3/30/2017
3/31/2017 0.02
Day of YearDaily PrcpMultiday Prcp
4/1/2017 0.41
4/2/2017 0.02
4/3/2017
4/4/2017 0.84
4/5/2017 0.51
4/6/2017
4/7/2017
4/8/2017
4/9/2017
4/10/2017
4/11/2017
4/12/2017
4/13/2017
4/14/2017
4/15/2017
4/16/2017
4/17/2017
4/18/2017
4/19/2017
4/20/2017 M
4/21/2017
4/22/2017 0.10
4/23/2017
4/24/2017
4/25/2017 0.14
4/26/2017 0.09
4/27/2017
4/28/2017
4/29/2017 0.23
4/30/2017 0.44
5/1/2017
5/2/2017
5/3/2017 0.20
5/4/2017
5/5/2017
5/6/2017
5/7/2017
5/8/2017 0.06
5/9/2017 0.37
5/10/2017 0.44
5/11/2017 0.21
5/12/2017
5/13/2017
5/14/2017
5/15/2017
5/16/2017 0.05
5/17/2017
5/18/2017 2.25
5/19/2017 2.03
5/20/2017
5/21/2017
5/22/2017
5/23/2017
5/24/2017
5/25/2017
5/26/2017 0.35
5/27/2017
5/28/2017 0.15
5/29/2017
5/30/2017
5/31/2017 0.01
6/1/2017 0.04
6/2/2017 0.05
6/3/2017
6/4/2017
6/5/2017
6/6/2017
6/7/2017
6/8/2017 T
6/9/2017
6/10/2017
6/11/2017
6/12/2017
6/13/2017
6/14/2017
6/15/2017
6/16/2017
6/17/2017
6/18/2017
6/19/2017
6/20/2017
6/21/2017 T
6/22/2017
6/23/2017 0.25
6/24/2017
6/25/2017
6/26/2017
6/27/2017
6/28/2017
6/29/2017
6/30/2017 0.02
Day of YearDaily PrcpMultiday Prcp
7/1/2017
7/2/2017
7/3/2017 T
7/4/2017 0.02
7/5/2017
7/6/2017
7/7/2017
7/8/2017
7/9/2017
7/10/2017
7/11/2017
7/12/2017
7/13/2017
7/14/2017
7/15/2017
7/16/2017
7/17/2017
7/18/2017
7/19/2017
7/20/2017
7/21/2017
7/22/2017 0.28
7/23/2017
7/24/2017
7/25/2017
7/26/2017
7/27/2017 0.30
7/28/2017
7/29/2017
7/30/2017
7/31/2017
8/1/2017
8/2/2017
8/3/2017 0.04
8/4/2017
8/5/2017 0.03
8/6/2017 0.07
8/7/2017 0.21
8/8/2017 0.54
8/9/2017 0.02
8/10/2017 0.03
8/11/2017 0.06
8/12/2017
8/13/2017
8/14/2017
8/15/2017
8/16/2017 0.04
8/17/2017 0.02
8/18/2017
8/19/2017
8/20/2017
8/21/2017
8/22/2017
8/23/2017
8/24/2017
8/25/2017
8/26/2017
8/27/2017
8/28/2017
8/29/2017
8/30/2017
8/31/2017
9/1/2017
9/2/2017
9/3/2017
9/4/2017
9/5/2017
9/6/2017
9/7/2017
9/8/2017
9/9/2017
9/10/2017
9/11/2017
9/12/2017
9/13/2017
9/14/2017
9/15/2017
9/16/2017
9/17/2017
9/18/2017
9/19/2017
9/20/2017
9/21/2017
9/22/2017
9/23/2017 0.02
9/24/2017 0.86
9/25/2017 0.08
9/26/2017 0.01
9/27/2017 0.02
9/28/2017 0.38
9/29/2017
9/30/2017 0.09



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/6/2016 7:00 AM 0.20 M M M M
10/7/2016 7:00 AM 0.07 M M M M
10/12/2016 7:00 AM 0.15 M M M M
10/19/2016 7:00 AM 0.02 M M M M
11/18/2016 7:00 AM 0.55 4.0 0.55 M M
11/22/2016 7:00 AM 0.06 M M M M
12/8/2016 7:00 AM M M M M M {EDIT: Observer reported 4.0 of new/total snow and 0.22 for SWE values and new precip. QPE data and surrounding reports of 0.00's indicate a date error. Report matches better with reports in the area on the previous day. Changed reports of 4.0 and 0.22 to NA until observer can be contacted to verify. Submission Time Before EDIT: 12/10/2016 12:11 AM CoCoSTAFF DNT}
12/9/2016 7:00 AM T T M 3.5 0.22
12/11/2016 7:00 AM 0.03 0.4 0.03 0.4 0.03
12/17/2016 7:00 AM 0.35 4.0 0.35 4.0 0.35
1/3/2017 7:00 AM 0.01 0.2 0.01 0.2 0.01
1/16/2017 7:00 AM 0.33 3.4 0.33 3.4 0.33
2/24/2017 7:00 AM 0.37 4.0 0.37 4.0 0.37
3/24/2017 7:00 AM 0.20 M M M M
3/28/2017 7:00 AM 0.19 M M M M
3/31/2017 7:00 AM 0.02 M M M M
4/1/2017 7:00 AM 0.41 M M M M
4/2/2017 7:00 AM 0.02 M M M M
4/4/2017 7:00 AM 0.84 5.0 0.84 5.0 0.84
4/5/2017 7:00 AM 0.51 3.5 0.51 6.0 M
4/20/2017 7:00 AM M M M M M {EDIT: Observer reported 0.21 of new precip. QPE data and surrounding reports of 0.00's indicate this could be an error. Changed report of 0.21 to NA until observer can be contacted to verify. Submission Time Before EDIT: 4/24/2017 7:41 AM CoCoSTAFF DNT}
4/22/2017 7:00 AM 0.10 M M M M
4/25/2017 7:00 AM 0.14 M M M M
4/26/2017 7:00 AM 0.09 M M M M
4/29/2017 7:00 AM 0.23 4.1 0.23 4.1 0.23
4/30/2017 7:00 AM 0.44 2.5 0.44 2.5 0.32
5/3/2017 7:00 AM 0.20 M M M M
5/8/2017 7:00 AM 0.06 M M M M
5/9/2017 7:00 AM 0.37 M M M M
5/10/2017 7:00 AM 0.44 M M M M
5/11/2017 7:00 AM 0.21 M M M M
5/16/2017 7:00 AM 0.05 M M M M
5/18/2017 7:00 AM 2.25 0.2 M M M {EDIT: Observer reported 0.2 for new snowfall and 2.25 for new SWE. It appears new precip amount accidentally got entered into the new SWE category. Changed SWE report of 2.25 to NA until verification. Submission Time Before EDIT: 5/18/2017 7:47 AM CoCoSTAFF DNT}
5/19/2017 7:00 AM 2.03 2.0 M 8.0 4.30 Heavy wet melting snow. Patchy accumulation. {EDIT: Observer reported 2.0 for new snowfall and 2.03 for new SWE. It appears new precip accidentally got entered into the wrong category. Changed SWE value of 2.03 to NA until verification. Submission Time Before EDIT: 5/19/2017 8:33 AM CoCoSTAFF DNT}
5/26/2017 7:00 AM 0.35 M M M M
5/28/2017 7:00 AM 0.15 M M M M
5/31/2017 7:00 AM 0.01 M M M M
6/1/2017 7:00 AM 0.04 M M M M
6/2/2017 7:00 AM 0.05 M M M M
6/8/2017 7:00 AM T M M M M
6/21/2017 7:00 AM T M M M M
6/23/2017 7:00 AM 0.25 M M M M
6/30/2017 7:00 AM 0.02 M M M M
7/3/2017 7:00 AM T M M M M
7/4/2017 7:00 AM 0.02 M M M M
7/22/2017 7:00 AM 0.28 M M M M
7/27/2017 7:00 AM 0.30 M M M M
8/3/2017 7:00 AM 0.04 M M M M
8/5/2017 7:00 AM 0.03 M M M M
8/6/2017 7:00 AM 0.07 M M M M
8/7/2017 7:00 AM 0.21 M M M M
8/8/2017 7:00 AM 0.54 M M M M
8/9/2017 7:00 AM 0.02 M M M M
8/10/2017 7:00 AM 0.03 M M M M
8/11/2017 7:00 AM 0.06 M M M M
8/16/2017 7:00 AM 0.04 M M M M
8/17/2017 7:00 AM 0.02 M M M M
9/23/2017 7:00 AM 0.02 M M M M
9/24/2017 7:00 AM 0.86 M M M M
9/25/2017 7:00 AM 0.08 M M M M
9/26/2017 7:00 AM 0.01 M M M M
9/27/2017 7:00 AM 0.02 M M M M
9/28/2017 7:00 AM 0.38 M M M M
9/30/2017 7:00 AM 0.09 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