Station Overview Station Location
Station Number CO-BO-118 Latitude 40.1832
Station Name Longmont 2.9 WNW Longitude -105.1516
County Boulder Elevation (ft) 5098



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 0.98 0.22 4 0.22 4 0.00 0 0 3 0 0.0 0 0
Nov 16 0.79 0.04 8 0.04 8 0.00 0 0 1 2 0.0 0 0
Dec 16 0.56 0.00 4 0.00 4 0.00 0 0 0 3 0.0 0 0
Jan 17 0.35 0.71 4 0.71 4 0.00 0 0 2 1 8.5 1 1
Feb 17 0.46 0.35 2 0.35 2 0.00 0 0 1 1 3.5 1 1
March 17 1.48 0.51 7 0.51 7 0.00 0 0 4 2 0.0 0 0
April 17 1.79 1.24 7 1.24 7 0.00 0 0 7 0 0.0 0 0
May 17 2.33 2.66 15 2.66 15 0.00 0 0 11 3 0.0 0 0
June 17 1.74 0.17 6 0.17 6 0.00 0 0 2 1 0.0 0 0
July 17 1.26 0.01 3 0.01 3 0.00 0 0 1 2 0.0 0 0
Aug 17 1.38 1.85 24 1.85 24 0.00 0 0 10 1 0.0 0 0
Sept 17 1.32 1.61 24 1.61 12 0.00 12 2 6 2 0.0 0 0
Water Year Totals: 14.44" 9.37" 108 days 9.37" 96 0.00" 12 days 2 48 days 18 days 12.0" 2 days 2 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 0.11
10/7/2016 0.04
10/8/2016
10/9/2016
10/10/2016
10/11/2016
10/12/2016
10/13/2016
10/14/2016
10/15/2016
10/16/2016
10/17/2016
10/18/2016
10/19/2016 0.07
10/20/2016 0.00
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 T
11/3/2016 0.00
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 T
11/18/2016
11/19/2016
11/20/2016
11/21/2016
11/22/2016 0.04
11/23/2016
11/24/2016
11/25/2016
11/26/2016 0.00
11/27/2016 0.00
11/28/2016 0.00
11/29/2016 0.00
11/30/2016
12/1/2016
12/2/2016
12/3/2016 T
12/4/2016 0.00
12/5/2016
12/6/2016
12/7/2016
12/8/2016
12/9/2016
12/10/2016
12/11/2016
12/12/2016
12/13/2016
12/14/2016
12/15/2016 T
12/16/2016
12/17/2016
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 T
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
1/4/2017
1/5/2017 0.70
1/6/2017
1/7/2017
1/8/2017
1/9/2017
1/10/2017 0.01
1/11/2017 0.00
1/12/2017 T
1/13/2017
1/14/2017
1/15/2017
1/16/2017
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 T
2/24/2017 0.35
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 T
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 T
3/25/2017
3/26/2017 0.00
3/27/2017 0.09
3/28/2017 0.10
3/29/2017 0.30
3/30/2017
3/31/2017 0.02
Day of YearDaily PrcpMultiday Prcp
4/1/2017 0.36
4/2/2017
4/3/2017 0.12
4/4/2017
4/5/2017
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
4/21/2017 0.48
4/22/2017 0.08
4/23/2017
4/24/2017
4/25/2017 0.17
4/26/2017 0.02
4/27/2017
4/28/2017 0.01
4/29/2017
4/30/2017
5/1/2017
5/2/2017 0.00
5/3/2017 0.03
5/4/2017
5/5/2017
5/6/2017
5/7/2017
5/8/2017
5/9/2017 0.40
5/10/2017 0.02
5/11/2017 0.34
5/12/2017
5/13/2017
5/14/2017
5/15/2017
5/16/2017
5/17/2017 0.25
5/18/2017 0.99
5/19/2017
5/20/2017
5/21/2017
5/22/2017 0.06
5/23/2017 0.11
5/24/2017
5/25/2017
5/26/2017 0.36
5/27/2017 T
5/28/2017 0.08
5/29/2017 0.02
5/30/2017 T
5/31/2017 T
6/1/2017
6/2/2017 0.09
6/3/2017
6/4/2017
6/5/2017 0.00
6/6/2017
6/7/2017
6/8/2017 T
6/9/2017 0.00
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 0.00
6/22/2017
6/23/2017 0.08
6/24/2017
6/25/2017
6/26/2017
6/27/2017
6/28/2017
6/29/2017
6/30/2017
Day of YearDaily PrcpMultiday Prcp
7/1/2017
7/2/2017
7/3/2017
7/4/2017
7/5/2017
7/6/2017
7/7/2017
7/8/2017
7/9/2017
7/10/2017
7/11/2017
7/12/2017 0.01
7/13/2017 T
7/14/2017
7/15/2017
7/16/2017
7/17/2017
7/18/2017
7/19/2017
7/20/2017
7/21/2017 T
7/22/2017
7/23/2017
7/24/2017
7/25/2017
7/26/2017
7/27/2017
7/28/2017
7/29/2017
7/30/2017
7/31/2017
8/1/2017
8/2/2017
8/3/2017 0.11
8/4/2017 0.10
8/5/2017 0.03
8/6/2017 0.58
8/7/2017 0.18
8/8/2017 0.62
8/9/2017 0.00
8/10/2017 0.06
8/11/2017 0.14
8/12/2017 0.00
8/13/2017 0.00
8/14/2017 0.00
8/15/2017 0.00
8/16/2017 0.02
8/17/2017 0.01
8/18/2017 0.00
8/19/2017
8/20/2017
8/21/2017
8/22/2017
8/23/2017
8/24/2017 T
8/25/2017 0.00
8/26/2017 0.00
8/27/2017 0.00
8/28/2017 0.00
8/29/2017 0.00
8/30/2017 0.00
8/31/2017 0.00
9/1/2017 0.00
9/2/2017 0.00
9/3/2017 0.00
9/4/2017 **
9/5/2017 **
9/6/2017 **
9/7/2017 **
9/8/2017 0.00
9/9/2017 T
9/10/2017
9/11/2017
9/12/2017
9/13/2017
9/14/2017
9/15/2017
9/16/2017 0.08
9/17/2017 **
9/18/2017 **
9/19/2017 **
9/20/2017 **
9/21/2017 **
9/22/2017 **
9/23/2017 0.00
9/24/2017 0.93
9/25/2017 0.15
9/26/2017 T
9/27/2017 0.04
9/28/2017 0.38
9/29/2017 0.03
9/30/2017 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/6/2016 7:00 AM 0.11 M M M M
10/7/2016 7:00 AM 0.04 M M M M
10/19/2016 7:00 AM 0.07 M M M M
10/20/2016 7:00 AM 0.00 0.0 M M M
11/2/2016 7:00 AM T M M M M A bit of rain around 10pm
11/3/2016 7:00 AM 0.00 0.0 M M M
11/17/2016 7:00 AM T M M M M Really, really light drizzle started falling right around 7am
11/22/2016 7:00 AM 0.04 M M M M
11/26/2016 7:00 AM 0.00 0.0 M M M
11/27/2016 7:00 AM 0.00 0.0 M M M
11/28/2016 7:00 AM 0.00 0.0 M M M
11/29/2016 7:00 AM 0.00 0.0 M M M
12/3/2016 7:00 AM T T M M M
12/4/2016 7:00 AM 0.00 0.0 M M M
12/15/2016 7:00 AM T T M M M Just a few flurries here and there. Some decently rimed crystals at times.
12/26/2016 7:00 AM T T M M M A few brief, intense snow showers, then a lot of wind. Gusts in the 40s.
1/5/2017 7:00 AM 0.70 8.5 M 9.0 M Still snowing. Liquid is an approximation from neighboring observations with similar snow amounts - which should work well in a storm like this. Snowfall and snow depth should be good.
1/10/2017 7:00 AM 0.01 M M M M Rain in January, at night! Seems to now be more "normal", after never getting it for the first 20+ years of living here, now I think it has happened the last 3 years in a row. Tons of snow melt over the last 48 hours.
1/11/2017 7:00 AM 0.00 0.0 M M M Impressive winds overnight
1/12/2017 7:00 AM T T M M M
2/23/2017 7:00 AM T T M M M Graupel at 7:30
2/24/2017 7:00 AM 0.35 3.5 0.35 3.5 M
3/11/2017 7:00 AM T M M M M Wet ground, deck and streets
3/24/2017 7:00 AM T M M M M What a bust!
3/26/2017 7:00 AM 0.00 0.0 M M M
3/27/2017 7:00 AM 0.09 M M M M
3/28/2017 7:00 AM 0.10 M M M M
3/29/2017 7:00 AM 0.30 0.0 M M M
3/31/2017 7:00 AM 0.02 M M M M
4/1/2017 7:00 AM 0.36 0.0 M M M What a bust! Glad we at least got some water out of it. Rain/drizzle off and on all day.
4/3/2017 7:00 AM 0.12 M M M M
4/21/2017 7:00 AM 0.48 M M M M Received 0.25" in about 10 min yesterday evening around 6:30pm
4/22/2017 7:00 AM 0.08 M M M M
4/25/2017 7:00 AM 0.17 M M M M
4/26/2017 7:00 AM 0.02 M M M M
4/28/2017 7:00 AM 0.01 M M M M
5/2/2017 7:00 AM 0.00 0.0 M M M
5/3/2017 7:00 AM 0.03 M M M M
5/9/2017 7:00 AM 0.40 M M M M
5/10/2017 7:00 AM 0.02 M M M M
5/11/2017 7:00 AM 0.34 M M M M
5/17/2017 7:00 AM 0.25 M M M M
5/18/2017 7:00 AM 0.99 M M M M RA/SN mix at 8am. Total is as of 7am from station nearby. Data from my station (0.40) is really anomalous compared to surrounding stations, so total is from station within 1/2 mi.
5/22/2017 7:00 AM 0.06 M M M M
5/23/2017 6:55 AM 0.11 M M M M
5/26/2017 7:00 AM 0.36 M M M M
5/27/2017 7:00 AM T M M M M
5/28/2017 7:00 AM 0.08 M M M M
5/29/2017 7:00 AM 0.02 M M M M
5/30/2017 7:00 AM T M M M M
5/31/2017 7:00 AM T M M M M
6/2/2017 7:00 AM 0.09 M M M M Downpour around 3:30pm
6/5/2017 7:00 AM 0.00 0.0 M M M
6/8/2017 7:00 AM T M M M M
6/9/2017 7:00 AM 0.00 0.0 M M M
6/21/2017 7:00 AM 0.00 0.0 M M M
6/23/2017 7:00 AM 0.08 M M M M
7/12/2017 7:00 AM 0.01 M M M M
7/13/2017 7:00 AM T M M M M
7/21/2017 7:00 AM T M M M M
8/3/2017 7:00 AM 0.11 M M M M
8/4/2017 7:00 AM 0.10 M M M M
8/5/2017 7:00 AM 0.03 M M M M
8/6/2017 7:00 AM 0.58 M M M M
8/7/2017 7:00 AM 0.18 M M M M
8/8/2017 7:00 AM 0.62 M M M M
8/9/2017 7:00 AM 0.00 0.0 M M M
8/10/2017 7:00 AM 0.06 M M M M
8/11/2017 7:00 AM 0.14 M M M M
8/12/2017 7:00 AM 0.00 0.0 M M M
8/13/2017 7:00 AM 0.00 0.0 M M M
8/14/2017 7:00 AM 0.00 0.0 M M M
8/15/2017 7:00 AM 0.00 0.0 M M M
8/16/2017 7:00 AM 0.02 M M M M
8/17/2017 7:00 AM 0.01 M M M M
8/18/2017 7:00 AM 0.00 0.0 M M M
8/24/2017 7:00 AM T M M M M
8/25/2017 7:00 AM 0.00 0.0 M M M
8/26/2017 7:00 AM 0.00 0.0 M M M
8/27/2017 7:00 AM 0.00 0.0 M M M
8/28/2017 7:00 AM 0.00 0.0 M M M
8/29/2017 7:00 AM 0.00 0.0 M M M
8/30/2017 7:00 AM 0.00 0.0 M M M
8/31/2017 7:00 AM 0.00 0.0 M M M
9/1/2017 7:00 AM 0.00 0.0 M M M
9/2/2017 7:00 AM 0.00 0.0 M M M
9/3/2017 7:00 AM 0.00 0.0 M M M
9/9/2017 7:00 AM T M M M M
9/16/2017 7:00 AM 0.08 M M M M
9/24/2017 7:00 AM 0.93 M M M M
9/25/2017 7:00 AM 0.15 M M M M
9/26/2017 7:00 AM T M M M M Just a few drips here and there.
9/27/2017 7:00 AM 0.04 M M M M
9/28/2017 7:00 AM 0.38 M M M M
9/29/2017 7:00 AM 0.03 M M M M
9/30/2017 7:00 AM 0.00 0.0 M M M Foggy morning



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/4/2017 9/08/2017 7:00 AM 5 0.00 0.0 0.00
9/17/2017 9/23/2017 7:00 AM 7 0.00 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