Station Overview Station Location
Station Number CO-BO-504 Latitude 40.002951
Station Name Lafayette 1.3 WNW Longitude -105.119328
County Boulder Elevation (ft) 5328



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 18 1.14 1.28 31 1.28 31 0.00 0 0 6 0 0.0 0 0
Nov 18 0.93 0.47 8 0.47 8 0.00 0 0 5 1 5.0 1 0
Dec 18 0.71 0.05 4 0.05 4 0.00 0 0 1 2 0.0 0 0
Jan 19 0.49 1.79 9 1.79 9 0.00 0 0 6 2 15.5 7 0
Feb 19 0.47 0.01 3 0.01 3 0.00 0 0 1 2 0.1 1 0
March 19 1.59 1.37 6 1.37 6 0.00 0 0 6 0 5.7 4 0
April 19 1.99 0.89 10 0.89 10 0.00 0 0 3 5 6.2 2 0
May 19 2.25 2.70 16 2.70 16 0.00 0 0 15 0 4.0 2 0
June 19 1.79 2.25 30 1.67 22 0.58 8 1 7 1 0.0 0 0
July 19 1.54 4.04 32 3.42 22 0.62 10 1 9 0 0.0 0 0
Aug 19 1.58 0.52 31 0.52 31 0.00 0 0 3 2 0.0 0 0
Sept 19 1.42 0.28 25 0.28 25 0.00 0 0 3 1 0.0 0 0
Water Year Totals: 15.90" 15.65" 205 days 14.45" 187 1.20" 18 days 2 65 days 16 days 36.5" 17 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
10/1/2018 0.00
10/2/2018 0.00
10/3/2018 0.00
10/4/2018 0.00
10/5/2018 0.00
10/6/2018 0.00
10/7/2018 0.23
10/8/2018 0.61
10/9/2018 0.10
10/10/2018 0.05
10/11/2018 0.08
10/12/2018 0.00
10/13/2018 0.00
10/14/2018 0.00
10/15/2018 0.00
10/16/2018 0.00
10/17/2018 0.00
10/18/2018 0.00
10/19/2018 0.00
10/20/2018 0.00
10/21/2018 0.00
10/22/2018 0.00
10/23/2018 0.00
10/24/2018 0.00
10/25/2018 0.00
10/26/2018 0.00
10/27/2018 0.00
10/28/2018 0.00
10/29/2018 0.00
10/30/2018 0.00
10/31/2018 0.21
11/1/2018 0.00
11/2/2018 0.00
11/3/2018 0.03
11/4/2018 0.01
11/5/2018 M
11/6/2018
11/7/2018
11/8/2018
11/9/2018
11/10/2018
11/11/2018 0.30
11/12/2018
11/13/2018
11/14/2018
11/15/2018
11/16/2018
11/17/2018 T
11/18/2018 0.10
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018 0.03
11/26/2018
11/27/2018
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018
12/3/2018
12/4/2018
12/5/2018
12/6/2018 0.05
12/7/2018
12/8/2018
12/9/2018
12/10/2018
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018
12/16/2018
12/17/2018
12/18/2018
12/19/2018
12/20/2018
12/21/2018
12/22/2018 T
12/23/2018
12/24/2018
12/25/2018
12/26/2018
12/27/2018 T
12/28/2018
12/29/2018 0.00
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.11
1/2/2019
1/3/2019
1/4/2019
1/5/2019 0.00
1/6/2019
1/7/2019
1/8/2019
1/9/2019
1/10/2019
1/11/2019 T
1/12/2019 0.75
1/13/2019
1/14/2019
1/15/2019
1/16/2019
1/17/2019
1/18/2019
1/19/2019 0.28
1/20/2019
1/21/2019
1/22/2019 T
1/23/2019
1/24/2019
1/25/2019 0.30
1/26/2019
1/27/2019
1/28/2019 0.20
1/29/2019 0.15
1/30/2019
1/31/2019
2/1/2019
2/2/2019
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019
2/8/2019
2/9/2019
2/10/2019
2/11/2019
2/12/2019
2/13/2019
2/14/2019
2/15/2019
2/16/2019
2/17/2019 T
2/18/2019 T
2/19/2019 0.01
2/20/2019
2/21/2019
2/22/2019
2/23/2019
2/24/2019
2/25/2019
2/26/2019
2/27/2019
2/28/2019
3/1/2019
3/2/2019 0.28
3/3/2019
3/4/2019 0.03
3/5/2019
3/6/2019
3/7/2019 0.01
3/8/2019
3/9/2019
3/10/2019
3/11/2019
3/12/2019
3/13/2019 0.33
3/14/2019 0.36
3/15/2019
3/16/2019
3/17/2019
3/18/2019
3/19/2019
3/20/2019
3/21/2019
3/22/2019
3/23/2019
3/24/2019
3/25/2019
3/26/2019
3/27/2019
3/28/2019
3/29/2019
3/30/2019 0.36
3/31/2019
Day of YearDaily PrcpMultiday Prcp
4/1/2019
4/2/2019
4/3/2019
4/4/2019
4/5/2019
4/6/2019
4/7/2019
4/8/2019
4/9/2019
4/10/2019 0.00
4/11/2019 0.53
4/12/2019 T
4/13/2019 T
4/14/2019
4/15/2019
4/16/2019 T
4/17/2019 T
4/18/2019
4/19/2019
4/20/2019
4/21/2019
4/22/2019 0.15
4/23/2019
4/24/2019
4/25/2019 T
4/26/2019
4/27/2019
4/28/2019
4/29/2019 0.00
4/30/2019 0.21
5/1/2019 0.22
5/2/2019 0.07
5/3/2019
5/4/2019
5/5/2019
5/6/2019
5/7/2019 0.18
5/8/2019 0.08
5/9/2019 0.49
5/10/2019 0.09
5/11/2019
5/12/2019
5/13/2019
5/14/2019
5/15/2019
5/16/2019
5/17/2019
5/18/2019 0.09
5/19/2019
5/20/2019 0.17
5/21/2019 0.67
5/22/2019 0.02
5/23/2019 0.15
5/24/2019
5/25/2019
5/26/2019 0.02
5/27/2019 0.10
5/28/2019 0.26
5/29/2019 0.09
5/30/2019
5/31/2019 0.00
6/1/2019 T
6/2/2019 0.02
6/3/2019 0.06
6/4/2019 **
6/5/2019 **
6/6/2019 **
6/7/2019 **
6/8/2019 **
6/9/2019 **
6/10/2019 **
6/11/2019 0.58
6/12/2019 0.00
6/13/2019 0.00
6/14/2019 0.00
6/15/2019 0.02
6/16/2019 0.00
6/17/2019 0.19
6/18/2019 0.33
6/19/2019 0.00
6/20/2019 0.00
6/21/2019 0.00
6/22/2019 0.80
6/23/2019 0.25
6/24/2019 0.00
6/25/2019 0.00
6/26/2019 0.00
6/27/2019 0.00
6/28/2019 0.00
6/29/2019 0.00
6/30/2019 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2019 0.02
7/2/2019 0.33
7/3/2019 0.00
7/4/2019 0.00
7/5/2019 0.34
7/6/2019 0.92
7/7/2019 0.00
7/8/2019 0.96
7/9/2019 0.00
7/10/2019 0.00
7/11/2019 0.00
7/12/2019 0.00
7/13/2019 **
7/14/2019 **
7/15/2019 **
7/16/2019 **
7/17/2019 **
7/18/2019 **
7/19/2019 **
7/20/2019 **
7/21/2019 **
7/22/2019 0.62 0.62
7/23/2019 0.10
7/24/2019 0.00
7/25/2019 0.00
7/26/2019 0.00
7/27/2019 0.00
7/28/2019 0.04
7/29/2019 0.00
7/30/2019 0.00
7/31/2019 0.09
8/1/2019 0.00
8/2/2019 0.11
8/3/2019 0.00
8/4/2019 0.00
8/5/2019 0.00
8/6/2019 T
8/7/2019 0.00
8/8/2019 0.33
8/9/2019 0.08
8/10/2019 0.00
8/11/2019 0.00
8/12/2019 0.00
8/13/2019 0.00
8/14/2019 0.00
8/15/2019 0.00
8/16/2019 0.00
8/17/2019 0.00
8/18/2019 0.00
8/19/2019 0.00
8/20/2019 0.00
8/21/2019 0.00
8/22/2019 0.00
8/23/2019 0.00
8/24/2019 T
8/25/2019 0.00
8/26/2019 0.00
8/27/2019 0.00
8/28/2019 0.00
8/29/2019 0.00
8/30/2019 0.00
8/31/2019 0.00
9/1/2019 0.00
9/2/2019 0.00
9/3/2019 0.00
9/4/2019
9/5/2019
9/6/2019 T
9/7/2019 0.06
9/8/2019 0.00
9/9/2019 0.20
9/10/2019 0.00
9/11/2019 0.00
9/12/2019 0.02
9/13/2019
9/14/2019 0.00
9/15/2019 0.00
9/16/2019 0.00
9/17/2019 0.00
9/18/2019 0.00
9/19/2019 0.00
9/20/2019 0.00
9/21/2019 0.00
9/22/2019 0.00
9/23/2019 0.00
9/24/2019 0.00
9/25/2019 0.00
9/26/2019 0.00
9/27/2019 M
9/28/2019 M
9/29/2019 0.00
9/30/2019 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2018 8:00 AM 0.00 0.0 M M M
10/2/2018 8:00 AM 0.00 0.0 M M M
10/3/2018 8:00 AM 0.00 0.0 M M M
10/4/2018 8:00 AM 0.00 0.0 M M M
10/5/2018 8:00 AM 0.00 0.0 M M M
10/6/2018 8:00 AM 0.00 0.0 M M M
10/7/2018 8:00 AM 0.23 M M M M
10/8/2018 8:00 AM 0.61 M M M M
10/9/2018 8:00 AM 0.10 M M M M
10/10/2018 8:00 AM 0.05 T M M M first snow
10/11/2018 8:00 AM 0.08 T M M M flurries
10/12/2018 8:00 AM 0.00 0.0 M M M
10/13/2018 8:00 AM 0.00 0.0 M M M
10/14/2018 8:00 AM 0.00 0.0 M M M
10/15/2018 8:00 AM 0.00 0.0 M M M
10/16/2018 8:00 AM 0.00 0.0 M M M
10/17/2018 8:00 AM 0.00 0.0 M M M
10/18/2018 8:00 AM 0.00 0.0 M M M
10/19/2018 8:00 AM 0.00 0.0 M M M
10/20/2018 8:00 AM 0.00 0.0 M M M
10/21/2018 8:00 AM 0.00 0.0 M M M
10/22/2018 8:00 AM 0.00 0.0 M M M
10/23/2018 8:00 AM 0.00 0.0 M M M
10/24/2018 8:00 AM 0.00 0.0 M M M
10/25/2018 8:00 AM 0.00 0.0 M M M
10/26/2018 8:00 AM 0.00 0.0 M M M
10/27/2018 8:00 AM 0.00 0.0 M M M
10/28/2018 8:00 AM 0.00 0.0 M M M
10/29/2018 8:00 AM 0.00 0.0 M M M
10/30/2018 8:00 AM 0.00 0.0 M M M
10/31/2018 8:00 AM 0.21 T M M M
11/1/2018 8:00 AM 0.00 0.0 M M M
11/2/2018 8:00 AM 0.00 0.0 M M M
11/3/2018 8:00 AM 0.03 M M M M
11/4/2018 8:00 AM 0.01 M M M M
11/5/2018 8:00 AM M 0.0 M M M {EDIT: Observer reported 0.77 for new precip. QPE data and surrounding reports of 0.00's indicate this could be a date error or a multi-day report. Changed report of 0.77 to NA until observer can be contacted to verify. Submission Time Before EDIT: 11/05/2018 11:12 AM CoCoSTAFF DNT}
11/11/2018 8:00 AM 0.30 5.0 M M M
11/17/2018 8:00 AM T T M M M sleet
11/18/2018 8:00 AM 0.10 T M M M
11/25/2018 8:00 AM 0.03 T M M M
12/6/2018 8:00 AM 0.05 T M M M
12/22/2018 8:00 AM T T M M M
12/27/2018 8:00 AM T T M M M
12/29/2018 8:00 AM 0.00 T M M M
1/1/2019 8:00 AM 0.11 2.2 M M M
1/5/2019 8:00 AM 0.00 0.0 M M M
1/11/2019 8:00 AM T T M M M
1/12/2019 8:00 AM 0.75 2.5 M M M Heavy wet snow
1/19/2019 8:00 AM 0.28 2.2 M M M
1/22/2019 8:00 AM T 0.1 M M M
1/25/2019 8:00 AM 0.30 2.5 M M M
1/28/2019 8:00 AM 0.20 4.0 M M M
1/29/2019 8:00 AM 0.15 2.0 M M M
2/17/2019 8:00 AM T T M M M
2/18/2019 8:00 AM T 0.1 M M M
2/19/2019 8:00 AM 0.01 T M M M
3/2/2019 8:00 AM 0.28 0.5 M M M
3/4/2019 8:00 AM 0.03 T M M M
3/7/2019 8:00 AM 0.01 0.2 M M M
3/13/2019 8:00 AM 0.33 M M M M sleet
3/14/2019 8:00 AM 0.36 2.5 M M M The famed "bomb cyclone" !!
3/30/2019 8:00 AM 0.36 2.5 M M M
4/10/2019 8:00 AM 0.00 0.0 M M M
4/11/2019 8:00 AM 0.53 4.2 M M M
4/12/2019 8:00 AM T T M M M
4/13/2019 8:00 AM T T M M M
4/16/2019 8:00 AM T T M M M
4/17/2019 8:00 AM T T M M M
4/22/2019 8:00 AM 0.15 M M M M
4/25/2019 8:00 AM T M M M M
4/29/2019 8:00 AM 0.00 0.0 M M M
4/30/2019 8:00 AM 0.21 2.0 M M M
5/1/2019 8:00 AM 0.22 M M M M
5/2/2019 8:00 AM 0.07 M M M M
5/7/2019 8:00 AM 0.18 M M M M
5/8/2019 8:00 AM 0.08 M M M M
5/9/2019 8:00 AM 0.49 1.0 M M M
5/10/2019 8:00 AM 0.09 M M M M
5/18/2019 8:00 AM 0.09 M M M M
5/20/2019 8:00 AM 0.17 M M M M
5/21/2019 8:00 AM 0.67 3.0 M M M Late snow fall
5/22/2019 8:00 AM 0.02 M M M M
5/23/2019 8:00 AM 0.15 M M M M
5/26/2019 8:00 AM 0.02 M M M M
5/27/2019 8:00 AM 0.10 M M M M
5/28/2019 8:00 AM 0.26 M M M M
5/29/2019 8:00 AM 0.09 M M M M
5/31/2019 8:00 AM 0.00 0.0 M M M
6/1/2019 8:00 AM T M M M M
6/2/2019 8:00 AM 0.02 M M M M
6/3/2019 8:00 AM 0.06 M M M M
6/12/2019 8:00 AM 0.00 0.0 M M M
6/13/2019 8:00 AM 0.00 0.0 M M M
6/14/2019 8:00 AM 0.00 0.0 M M M
6/15/2019 8:00 AM 0.02 M M M M
6/16/2019 8:00 AM 0.00 0.0 M M M
6/17/2019 8:00 AM 0.19 M M M M
6/18/2019 8:00 AM 0.33 M M M M
6/19/2019 8:00 AM 0.00 0.0 M M M
6/20/2019 8:00 AM 0.00 0.0 M M M
6/21/2019 8:00 AM 0.00 0.0 M M M
6/22/2019 8:00 AM 0.80 M M M M
6/23/2019 8:00 AM 0.25 M M M M
6/24/2019 8:00 AM 0.00 0.0 M M M
6/25/2019 8:00 AM 0.00 0.0 M M M
6/26/2019 8:00 AM 0.00 0.0 M M M
6/27/2019 8:00 AM 0.00 0.0 M M M
6/28/2019 8:00 AM 0.00 0.0 M M M
6/29/2019 8:00 AM 0.00 0.0 M M M
6/30/2019 8:00 AM 0.00 0.0 M M M
7/1/2019 8:00 AM 0.02 M M M M
7/2/2019 8:00 AM 0.33 M M M M
7/3/2019 8:00 AM 0.00 0.0 M M M
7/4/2019 8:00 AM 0.00 0.0 M M M
7/5/2019 8:00 AM 0.34 M M M M
7/6/2019 8:00 AM 0.92 M M M M .80 rain in 15 minutes. 1 1/2" hail. Damaged house and roof.
7/7/2019 8:00 AM 0.00 0.0 M M M
7/8/2019 8:00 AM 0.96 M M M M .96 in 15 minutes. small hail. no damage.
7/9/2019 8:00 AM 0.00 0.0 M M M
7/10/2019 8:00 AM 0.00 0.0 M M M
7/11/2019 8:00 AM 0.00 0.0 M M M
7/12/2019 8:00 AM 0.00 0.0 M M M
7/22/2019 8:00 AM 0.62 M M M M
7/23/2019 8:00 AM 0.10 M M M M
7/24/2019 8:00 AM 0.00 0.0 M M M
7/25/2019 8:00 AM 0.00 0.0 M M M
7/26/2019 8:00 AM 0.00 0.0 M M M
7/27/2019 8:00 AM 0.00 0.0 M M M
7/28/2019 8:00 AM 0.04 M M M M
7/29/2019 8:00 AM 0.00 0.0 M M M
7/30/2019 8:00 AM 0.00 0.0 M M M
7/31/2019 8:00 AM 0.09 M M M M
8/1/2019 8:00 AM 0.00 0.0 M M M
8/2/2019 8:00 AM 0.11 M M M M
8/3/2019 8:00 AM 0.00 0.0 M M M
8/4/2019 8:00 AM 0.00 0.0 M M M
8/5/2019 8:00 AM 0.00 0.0 M M M
8/6/2019 8:00 AM T M M M M
8/7/2019 8:00 AM 0.00 0.0 M M M
8/8/2019 8:00 AM 0.33 M M M M
8/9/2019 8:00 AM 0.08 M M M M
8/10/2019 8:00 AM 0.00 0.0 M M M
8/11/2019 8:00 AM 0.00 0.0 M M M
8/12/2019 8:00 AM 0.00 0.0 M M M
8/13/2019 8:00 AM 0.00 0.0 M M M
8/14/2019 8:00 AM 0.00 0.0 M M M
8/15/2019 8:00 AM 0.00 0.0 M M M
8/16/2019 8:00 AM 0.00 0.0 M M M
8/17/2019 8:00 AM 0.00 0.0 M M M
8/18/2019 8:00 AM 0.00 0.0 M M M
8/19/2019 8:00 AM 0.00 0.0 M M M
8/20/2019 8:00 AM 0.00 0.0 M M M
8/21/2019 8:00 AM 0.00 0.0 M M M
8/22/2019 8:00 AM 0.00 0.0 M M M
8/23/2019 8:00 AM 0.00 0.0 M M M
8/24/2019 8:00 AM T M M M M
8/25/2019 8:00 AM 0.00 0.0 M M M
8/26/2019 8:00 AM 0.00 0.0 M M M
8/27/2019 8:00 AM 0.00 0.0 M M M
8/28/2019 8:00 AM 0.00 0.0 M M M
8/29/2019 8:00 AM 0.00 0.0 M M M
8/30/2019 8:00 AM 0.00 0.0 M M M
8/31/2019 8:00 AM 0.00 0.0 M M M
9/1/2019 8:00 AM 0.00 0.0 M M M
9/2/2019 8:00 AM 0.00 0.0 M M M
9/3/2019 8:00 AM 0.00 0.0 M M M
9/6/2019 8:00 AM T M M M M
9/7/2019 8:00 AM 0.06 M M M M
9/8/2019 8:00 AM 0.00 0.0 M M M
9/9/2019 8:00 AM 0.20 M M M M
9/10/2019 8:00 AM 0.00 0.0 M M M
9/11/2019 8:00 AM 0.00 0.0 M M M
9/12/2019 8:00 AM 0.02 M M M M
9/14/2019 8:00 AM 0.00 0.0 M M M
9/15/2019 8:00 AM 0.00 0.0 M M M
9/16/2019 8:00 AM 0.00 0.0 M M M
9/17/2019 8:00 AM 0.00 0.0 M M M
9/18/2019 8:00 AM 0.00 0.0 M M M
9/19/2019 8:00 AM 0.00 0.0 M M M
9/20/2019 8:00 AM 0.00 0.0 M M M
9/21/2019 8:00 AM 0.00 0.0 M M M
9/22/2019 8:00 AM 0.00 0.0 M M M
9/23/2019 8:00 AM 0.00 0.0 M M M
9/24/2019 8:00 AM 0.00 0.0 M M M
9/25/2019 8:00 AM 0.00 0.0 M M M
9/26/2019 8:00 AM 0.00 0.0 M M M
9/27/2019 8:00 AM M M M M M {EDIT: Observer reported 0.04 for new precip. QPE data and surrounding reports of 0.00's indicate this could be a date error. It appears 9/27 and 9/28 reports were switched during submission. Changed report of 0.04 to NA until observer can be contacted to verify. Submission Time Before EDIT: 9/30/2019 2:25 PM CoCoSTAFF DNT}
9/28/2019 8:00 AM M 0.0 M M M {EDIT: Observer reported 0.00 for new precip. QPE data and surrounding reports of precip indicate this could be a date error. It appears 9/27 and 9/28 reports were switched during submission. Changed report of 0.00 to NA until observer can be contacted to verify. Submission Time Before EDIT: 9/30/2019 2:25 PM CoCoSTAFF DNT}
9/29/2019 8:00 AM 0.00 0.0 M M M
9/30/2019 8:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
6/4/2019 6/11/2019 8:00 AM 8 0.58 M M
7/13/2019 7/22/2019 8:00 AM 10 0.62 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