Station Overview Station Location
Station Number CO-BO-407 Latitude 39.9810752868652
Station Name Lafayette 1.0 SSW Longitude -105.106269836426
County Boulder Elevation (ft) 5244



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 1.12 1.96 25 0.11 14 1.85 11 4 2 3 0.0 0 0
Nov 17 0.93 0.34 24 0.34 10 0.00 14 3 2 2 0.0 0 0
Dec 17 0.70 0.44 32 0.44 7 0.00 25 5 3 1 3.5 2 0
Jan 18 0.49 0.43 28 0.43 5 0.00 23 4 3 0 1.0 1 1
Feb 18 0.47 0.46 27 0.26 4 0.20 23 4 3 0 8.0 1 0
March 18 1.56 2.33 27 1.24 5 1.09 22 4 4 0 0.0 0 0
April 18 2.00 1.14 45 0.00 3 1.14 42 4 0 0 0.0 0 0
May 18 2.26 2.89 36 0.94 6 1.95 30 6 3 0 0.0 0 0
June 18 1.93 0.91 30 0.10 28 0.81 2 1 2 0 0.0 0 0
July 18 1.53 2.55 26 2.55 17 0.00 9 1 12 1 0.0 0 0
Aug 18 1.68 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 18 1.39 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 16.06" 13.45" 300 days 6.41" 99 7.04" 201 days 36 34 days 7 days 12.5" 4 days 1 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 **
10/2/2017 1.08
10/3/2017
10/4/2017 T
10/5/2017
10/6/2017
10/7/2017 0.00
10/8/2017 0.00
10/9/2017 **
10/10/2017 0.77
10/11/2017 T
10/12/2017
10/13/2017 0.00
10/14/2017 0.00
10/15/2017
10/16/2017 0.00
10/17/2017 0.00
10/18/2017 0.00
10/19/2017
10/20/2017 0.00
10/21/2017 **
10/22/2017 0.00
10/23/2017 **
10/24/2017 **
10/25/2017 **
10/26/2017 **
10/27/2017 0.00
10/28/2017 0.06
10/29/2017 0.00
10/30/2017 0.05
10/31/2017 T
11/1/2017
11/2/2017 0.00
11/3/2017
11/4/2017 0.00
11/5/2017
11/6/2017 T
11/7/2017 0.28
11/8/2017 0.00
11/9/2017 **
11/10/2017 **
11/11/2017 **
11/12/2017 **
11/13/2017 **
11/14/2017 0.00
11/15/2017 0.00
11/16/2017
11/17/2017 0.06
11/18/2017 **
11/19/2017 **
11/20/2017 0.00
11/21/2017
11/22/2017
11/23/2017 **
11/24/2017 **
11/25/2017 **
11/26/2017 **
11/27/2017 0.00
11/28/2017 T
11/29/2017 0.00
11/30/2017 0.00
12/1/2017 **
12/2/2017 **
12/3/2017 **
12/4/2017 0.00
12/5/2017 **
12/6/2017 **
12/7/2017 **
12/8/2017 **
12/9/2017 **
12/10/2017 0.00
12/11/2017 **
12/12/2017 **
12/13/2017 0.00
12/14/2017 0.07
12/15/2017 **
12/16/2017 **
12/17/2017 **
12/18/2017 **
12/19/2017 **
12/20/2017 0.00
12/21/2017 0.12
12/22/2017
12/23/2017 T
12/24/2017 0.25
12/25/2017 **
12/26/2017 T
12/27/2017 0.00
12/28/2017 0.00
12/29/2017 0.00
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 0.00
1/10/2018
1/11/2018
1/12/2018 0.01
1/13/2018
1/14/2018 0.00
1/15/2018 0.09
1/16/2018 0.00
1/17/2018 **
1/18/2018 **
1/19/2018 **
1/20/2018 0.00
1/21/2018 0.33
1/22/2018 **
1/23/2018 **
1/24/2018 **
1/25/2018 **
1/26/2018 0.00
1/27/2018 **
1/28/2018 **
1/29/2018 **
1/30/2018 **
1/31/2018 0.00
2/1/2018 0.02
2/2/2018 **
2/3/2018 0.00
2/4/2018 0.02
2/5/2018 **
2/6/2018 **
2/7/2018 **
2/8/2018 **
2/9/2018 **
2/10/2018 **
2/11/2018 **
2/12/2018 0.17
2/13/2018 **
2/14/2018 **
2/15/2018 **
2/16/2018 0.02
2/17/2018
2/18/2018 0.00
2/19/2018 0.22
2/20/2018 **
2/21/2018 0.01
2/22/2018 **
2/23/2018 **
2/24/2018 **
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 0.00
3/15/2018
3/16/2018 0.31
3/17/2018 0.00
3/18/2018 **
3/19/2018 0.01 0.71
3/20/2018
3/21/2018
3/22/2018
3/23/2018 **
3/24/2018 **
3/25/2018 **
3/26/2018 0.03
3/27/2018 0.88
3/28/2018 **
3/29/2018 0.35
3/30/2018 0.04
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018 **
4/2/2018 0.01
4/3/2018 **
4/4/2018 **
4/5/2018 **
4/6/2018 **
4/7/2018 **
4/8/2018 **
4/9/2018 0.22
4/10/2018 0.00
4/11/2018 0.00
4/12/2018 0.00
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 0.53
4/22/2018 **
4/23/2018 **
4/24/2018 **
4/25/2018 **
4/26/2018 **
4/27/2018 **
4/28/2018 **
4/29/2018 **
4/30/2018 **
5/1/2018 **
5/2/2018 **
5/3/2018 **
5/4/2018 **
5/5/2018 **
5/6/2018 **
5/7/2018 **
5/8/2018 **
5/9/2018 **
5/10/2018 0.00
5/11/2018 0.00
5/12/2018 0.23
5/13/2018 0.41
5/14/2018 0.30
5/15/2018 **
5/16/2018 **
5/17/2018 **
5/18/2018 **
5/19/2018 **
5/20/2018 0.18
5/21/2018 **
5/22/2018 **
5/23/2018 0.12
5/24/2018 **
5/25/2018 **
5/26/2018 **
5/27/2018 **
5/28/2018 **
5/29/2018 0.11
5/30/2018 0.00
5/31/2018 0.00
6/1/2018 0.00
6/2/2018 0.00
6/3/2018 0.00
6/4/2018 0.00
6/5/2018 0.00
6/6/2018 0.00
6/7/2018 0.00
6/8/2018 0.00
6/9/2018 0.00
6/10/2018 0.00
6/11/2018 0.00
6/12/2018 0.00
6/13/2018 0.00
6/14/2018 0.00
6/15/2018 0.00
6/16/2018 0.00
6/17/2018 0.09
6/18/2018 **
6/19/2018 0.81
6/20/2018 0.00
6/21/2018 0.00
6/22/2018 0.00
6/23/2018 0.00
6/24/2018 0.01
6/25/2018 0.00
6/26/2018 0.00
6/27/2018 0.00
6/28/2018 0.00
6/29/2018 0.00
6/30/2018 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.00
7/2/2018 0.00
7/3/2018 0.00
7/4/2018 0.00
7/5/2018 0.01
7/6/2018 **
7/7/2018 **
7/8/2018 **
7/9/2018 **
7/10/2018 **
7/11/2018 **
7/12/2018 **
7/13/2018 **
7/14/2018 0.00
7/15/2018 0.25
7/16/2018 0.01
7/17/2018 0.01
7/18/2018 0.17
7/19/2018
7/20/2018
7/21/2018
7/22/2018 T
7/23/2018 1.27
7/24/2018 0.10
7/25/2018 0.36
7/26/2018 0.26
7/27/2018 0.09
7/28/2018 0.01
7/29/2018 0.01
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
8/16/2018
8/17/2018
8/18/2018
8/19/2018
8/20/2018
8/21/2018
8/22/2018
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
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
10/4/2017 6:00 PM T M M M M sunny
10/7/2017 6:00 PM 0.00 0.0 M M M clear
10/8/2017 6:00 PM 0.00 0.0 M M M
10/11/2017 6:00 PM T M M M M clear
10/13/2017 6:00 PM 0.00 0.0 M M M clear
10/14/2017 6:00 PM 0.00 0.0 M M M clear, windy
10/16/2017 6:00 PM 0.00 0.0 M M M clear
10/17/2017 6:00 PM 0.00 0.0 M M M clear
10/18/2017 6:00 PM 0.00 0.0 M M M clear
10/20/2017 6:00 PM 0.00 0.0 M M M clear
10/28/2017 6:00 PM 0.06 M M M M some clouds overnight
10/29/2017 6:00 PM 0.00 0.0 M M M clear
10/30/2017 6:00 PM 0.05 M M M M some rain/drizzle/snow during night & morning
10/31/2017 6:00 PM T M M M M partly cloudy
11/2/2017 6:00 PM 0.00 0.0 M M M clear
11/4/2017 6:00 PM 0.00 0.0 M M M clear
11/6/2017 6:00 PM T M M M M cloudy
11/7/2017 6:00 PM 0.28 M M M M light snow
11/8/2017 6:00 PM 0.00 0.0 M M M clear
11/15/2017 6:00 PM 0.00 0.0 M M M clear
11/17/2017 6:00 PM 0.06 M M M M partly cloudy, rainy
11/28/2017 6:00 PM T M M M M cloudy, some light drizzle
11/29/2017 6:00 PM 0.00 0.0 M M M clear
11/30/2017 6:00 PM 0.00 0.0 M M M clear
12/14/2017 6:00 PM 0.07 M M M M light snow overnight
12/21/2017 6:00 PM 0.12 0.5 0.12 M M snow overnight
12/23/2017 6:00 PM T M M M M started snowing about 5:30pm
12/24/2017 6:00 PM 0.25 3.0 M M M few inches snow overnight
12/27/2017 6:00 PM 0.00 0.0 M M M clear
12/28/2017 6:00 PM 0.00 0.0 M M M clear
12/29/2017 6:00 PM 0.00 0.0 M M M clear
1/12/2018 6:00 PM 0.01 M M M M a little rain
1/14/2018 6:00 PM 0.00 0.0 M M M clear
1/15/2018 6:00 PM 0.09 1.0 M M M snow previous night & morning
1/16/2018 6:00 PM 0.00 0.0 M M M clear
1/21/2018 6:00 PM 0.33 M M 6.0 M snow!
2/1/2018 6:00 PM 0.02 M M M M light snow
2/4/2018 6:00 PM 0.02 M M M M light snow
2/18/2018 6:00 PM 0.00 0.0 M M M clear & warm
2/19/2018 6:00 PM 0.22 8.0 M M M snow! cold!
3/16/2018 10:00 AM 0.31 M M M M intense rail & hail on night on 3/15/18
3/17/2018 6:00 PM 0.00 0.0 M M M clear
3/19/2018 6:00 PM 0.01 M M M M from cloudy night of 3/18/18?
3/27/2018 5:00 PM 0.88 M M M M Rain & snow last night!
3/30/2018 6:00 PM 0.04 M M M M
4/10/2018 6:00 PM 0.00 0.0 M M M
4/11/2018 6:00 PM 0.00 0.0 M M M
4/12/2018 6:00 PM 0.00 0.0 M M M
5/11/2018 6:00 PM 0.00 0.0 M M M clear but getting cloudy...
5/12/2018 6:00 PM 0.23 M M M M cloudy & rainy
5/13/2018 6:00 PM 0.41 M M M M rainy...
5/14/2018 9:00 PM 0.30 M M M M partly cloudy
5/30/2018 6:00 PM 0.00 0.0 M M M
5/31/2018 6:00 PM 0.00 0.0 M M M
6/1/2018 6:00 PM 0.00 0.0 M M M
6/2/2018 6:00 PM 0.00 0.0 M M M
6/3/2018 6:00 PM 0.00 0.0 M M M
6/4/2018 6:00 PM 0.00 0.0 M M M
6/5/2018 6:00 PM 0.00 0.0 M M M
6/6/2018 6:00 PM 0.00 0.0 M M M
6/7/2018 6:00 PM 0.00 0.0 M M M
6/8/2018 6:00 PM 0.00 0.0 M M M
6/9/2018 6:00 PM 0.00 0.0 M M M
6/10/2018 6:00 PM 0.00 0.0 M M M
6/11/2018 6:00 PM 0.00 0.0 M M M
6/12/2018 6:00 PM 0.00 0.0 M M M
6/13/2018 6:00 PM 0.00 0.0 M M M
6/14/2018 6:00 PM 0.00 0.0 M M M
6/15/2018 6:00 PM 0.00 0.0 M M M Few sprinkles in afternoon around 1pm; mostly verga
6/16/2018 6:00 PM 0.00 0.0 M M M Dry!
6/17/2018 6:00 PM 0.09 M M M M cloudy; steady drizzle part of day
6/20/2018 6:00 PM 0.00 0.0 M M M
6/21/2018 6:00 PM 0.00 0.0 M M M
6/22/2018 6:00 PM 0.00 0.0 M M M
6/23/2018 6:00 PM 0.00 0.0 M M M
6/24/2018 6:00 PM 0.01 M M M M light rain around noon
6/25/2018 6:00 PM 0.00 0.0 M M M
6/26/2018 6:00 PM 0.00 0.0 M M M
6/27/2018 6:00 PM 0.00 0.0 M M M
6/28/2018 6:00 PM 0.00 0.0 M M M
6/29/2018 6:00 PM 0.00 0.0 M M M
6/30/2018 6:00 PM 0.00 0.0 M M M
7/1/2018 6:00 PM 0.00 0.0 M M M
7/2/2018 6:00 PM 0.00 0.0 M M M
7/3/2018 6:00 PM 0.00 0.0 M M M
7/4/2018 6:00 PM 0.00 0.0 M M M
7/5/2018 6:00 PM 0.01 M M M M afternoon shower
7/15/2018 6:00 PM 0.25 M M M M cool, cloudy, rainy day....
7/16/2018 6:00 PM 0.01 M M M M shower
7/17/2018 6:00 PM 0.01 M M M M brief shower
7/18/2018 6:00 PM 0.17 M M M M brief storm night before, hail & rain
7/22/2018 6:00 PM T M M M M Sprinkles
7/23/2018 6:00 PM 1.27 M M M M Big afternoon thunderstorm, much lightning
7/24/2018 6:00 PM 0.10 M M M M
7/25/2018 8:00 PM 0.36 M M M M Heavy afternoon shower
7/26/2018 6:00 PM 0.26 M M M M Rain during previous night
7/27/2018 6:00 PM 0.09 M M M M
7/28/2018 6:00 PM 0.01 M M M M Rain just started around 6pm
7/29/2018 6:00 PM 0.01 M M M M Slight rain previous night



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/1/2017 10/02/2017 6:00 PM 2 1.08 M M Rainy day!
10/9/2017 10/10/2017 6:00 PM 2 0.77 M M snow on Monday
10/21/2017 10/22/2017 6:00 PM 2 0.00 M M clear
10/23/2017 10/27/2017 6:00 PM 5 0.00 M M
11/9/2017 11/14/2017 6:00 PM 6 0.00 M M clear
11/18/2017 11/20/2017 6:00 PM 3 0.00 M M clear
11/23/2017 11/27/2017 6:00 PM 5 0.00 M M clear
12/1/2017 12/10/2017 6:00 PM 10 0.00 M M clear & unseasonably warm
12/3/2017 12/04/2017 6:00 PM 2 0.00 M M clear
12/11/2017 12/13/2017 6:00 PM 3 0.00 M M clear
12/15/2017 12/20/2017 6:00 PM 6 0.00 M M clear
12/25/2017 12/26/2017 6:00 PM 2 T M M
12/30/2017 1/09/2018 6:00 PM 11 0.00 M M clear, too warm
1/17/2018 1/20/2018 6:00 PM 4 0.00 M M clear
1/22/2018 1/26/2018 6:00 PM 5 0.00 M M clear
1/27/2018 1/31/2018 6:00 PM 5 0.00 M M Clear
2/2/2018 2/03/2018 6:00 PM 2 0.00 M M clear
2/5/2018 2/12/2018 6:00 PM 8 0.17 M M snow on 2/10/18
2/13/2018 2/16/2018 6:00 PM 4 0.02 M M light snow
2/20/2018 2/21/2018 6:00 PM 2 0.01 M M
2/22/2018 3/14/2018 6:00 PM 21 0.00 M M clear spell....
3/18/2018 3/19/2018 6:00 PM 2 0.71 M M rain/snow/hail on night of 3/18/18
3/23/2018 3/26/2018 1:00 PM 4 0.03 M M
3/28/2018 3/29/2018 4:00 PM 2 0.35 M M
4/1/2018 4/02/2018 5:00 PM 2 0.01 M M
4/3/2018 4/09/2018 6:00 PM 7 0.22 M M
4/13/2018 4/21/2018 6:00 PM 9 0.53 M M
4/22/2018 4/24/2018 6:00 PM 3 0.38 M M
4/23/2018 5/02/2018 7:00 PM 10 0.25 M M
4/24/2018 5/03/2018 7:00 PM 10 1.29 M M
4/25/2018 5/10/2018 6:00 PM 16 0.00 M M clear period
5/15/2018 5/20/2018 8:00 PM 6 0.18 M M cloudy, drizzly
5/21/2018 5/23/2018 6:00 PM 3 0.12 M M
5/24/2018 5/29/2018 6:00 PM 6 0.11 M M
6/18/2018 6/19/2018 6:00 PM 2 0.81 M M
7/6/2018 7/14/2018 6:00 PM 9 0.00 M M hot & dry spell!



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