Station Overview Station Location
Station Number CO-BO-292 Latitude 40.1498792
Station Name Longmont 2.7 SW Longitude -105.1519936
County Boulder Elevation (ft) 5023



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 0.99 1.39 8 1.39 8 0.00 0 0 7 1 0.5 1 1
Nov 17 0.87 0.41 7 0.41 7 0.00 0 0 5 1 3.0 2 2
Dec 17 0.55 0.31 12 0.31 12 0.00 0 0 4 1 3.3 4 11
Jan 18 0.38 0.35 5 0.35 5 0.00 0 0 3 1 3.3 3 3
Feb 18 0.48 0.62 17 0.62 17 0.00 0 0 8 1 11.1 6 11
March 18 1.48 1.24 5 1.24 5 0.00 0 0 5 0 0.2 1 0
April 18 1.76 0.66 5 0.66 5 0.00 0 0 5 0 0.0 0 0
May 18 2.34 2.50 8 2.50 8 0.00 0 0 8 0 0.0 0 0
June 18 1.76 0.77 6 0.77 6 0.00 0 0 6 0 0.0 0 0
July 18 1.24 2.20 8 2.20 8 0.00 0 0 8 0 0.0 0 0
Aug 18 1.34 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 18 1.41 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 14.60" 10.45" 81 days 10.45" 81 0.00" 0 days 0 59 days 5 days 21.4" 17 days 28 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 0.52
10/3/2017 0.33
10/4/2017 0.01
10/5/2017
10/6/2017
10/7/2017
10/8/2017
10/9/2017 0.29
10/10/2017 0.19
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017 0.02
10/28/2017
10/29/2017
10/30/2017 T
10/31/2017 0.03
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017 0.11
11/6/2017 0.01
11/7/2017 0.17
11/8/2017 0.03
11/9/2017
11/10/2017
11/11/2017
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017 0.09
11/19/2017
11/20/2017
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
11/30/2017
12/1/2017
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017 0.04
12/15/2017
12/16/2017
12/17/2017
12/18/2017
12/19/2017
12/20/2017
12/21/2017 0.14
12/22/2017 0.04
12/23/2017 0.00
12/24/2017 0.09
12/25/2017 0.00
12/26/2017 0.00
12/27/2017 T
12/28/2017 0.00
12/29/2017 0.00
12/30/2017 0.00
12/31/2017 0.00
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
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018 T
1/16/2018 0.06
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018 0.21
1/22/2018 0.08
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018 0.00
2/1/2018 0.04
2/2/2018
2/3/2018
2/4/2018 T
2/5/2018 0.01
2/6/2018
2/7/2018
2/8/2018
2/9/2018 0.00
2/10/2018 0.08
2/11/2018 0.03
2/12/2018
2/13/2018
2/14/2018 0.00
2/15/2018
2/16/2018 0.01
2/17/2018
2/18/2018
2/19/2018 0.01
2/20/2018 0.31
2/21/2018 0.00
2/22/2018 0.00
2/23/2018
2/24/2018 0.13
2/25/2018 0.00
2/26/2018 0.00
2/27/2018 0.00
2/28/2018 0.00
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
3/15/2018
3/16/2018 0.15
3/17/2018
3/18/2018
3/19/2018 0.54
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018 0.02
3/27/2018 0.30
3/28/2018
3/29/2018 0.23
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018 0.02
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018 0.09
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
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 0.22
4/22/2018
4/23/2018
4/24/2018 0.17
4/25/2018 0.16
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018 0.11
5/3/2018 0.86
5/4/2018 0.45
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018 0.06
5/13/2018 0.16
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018
5/19/2018 0.67
5/20/2018 0.08
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018 0.11
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018 0.02
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018 0.23
6/19/2018 0.27
6/20/2018 0.16
6/21/2018
6/22/2018
6/23/2018
6/24/2018 0.03
6/25/2018 0.06
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.15
7/2/2018
7/3/2018
7/4/2018
7/5/2018
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
7/15/2018
7/16/2018 0.37
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018 0.05
7/24/2018 0.71
7/25/2018
7/26/2018 0.67
7/27/2018 0.14
7/28/2018 0.03
7/29/2018 0.08
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
10/2/2017 7:00 AM 0.52 M M M M
10/3/2017 7:00 AM 0.33 M M M M
10/4/2017 7:00 AM 0.01 M M M M
10/9/2017 7:00 AM 0.29 M M M M
10/10/2017 7:00 AM 0.19 M M M M
10/27/2017 7:00 AM 0.02 M M M M
10/30/2017 7:00 AM T M M M M
10/31/2017 7:00 AM 0.03 0.5 M 0.5 M lite snowfall before five am
11/5/2017 7:00 AM 0.11 M M M M
11/6/2017 7:00 AM 0.01 M M M M
11/7/2017 7:00 AM 0.17 2.5 M 2.5 M
11/8/2017 7:00 AM 0.03 0.5 M 2.0 M
11/18/2017 7:00 AM 0.09 M M M M
11/27/2017 7:00 AM 0.00 0.0 M M M 'warm' & windy prior to sunrise w/ temps in the low 60's...
11/28/2017 7:00 AM T M M M M low overcast sky & calm @ obsn
12/14/2017 7:00 AM 0.04 0.6 M 0.5 M light snow in the early morning hours/overcast & calm @ obsn
12/21/2017 7:00 AM 0.14 1.3 M 1.5 M breezy w/ light snow falling before 4:30 am and continuing at 7:30 am
12/22/2017 7:00 AM 0.04 0.4 M 1.5 M
12/23/2017 7:00 AM 0.00 0.0 M 1.5 M
12/24/2017 7:00 AM 0.09 1.0 M 2.5 M snow
12/25/2017 7:00 AM 0.00 0.0 M 2.0 M
12/26/2017 7:00 AM 0.00 0.0 M 2.0 M
12/27/2017 7:00 AM T T M 2.0 M
12/28/2017 7:00 AM 0.00 0.0 M 2.0 M
12/29/2017 7:00 AM 0.00 0.0 M 2.0 M
12/30/2017 7:00 AM 0.00 0.0 M 1.0 M
12/31/2017 7:00 AM 0.00 0.0 M 0.0 M
1/15/2018 7:00 AM T T M T M freezing rain mixed w/ light snow @ obsn
1/16/2018 7:00 AM 0.06 0.6 M 0.5 M
1/21/2018 7:00 AM 0.21 2.1 M 2.0 M
1/22/2018 7:00 AM 0.08 0.6 M 2.6 M
1/31/2018 7:00 AM 0.00 0.0 M 0.0 M very strong winds Tuesday night (1-30-18) between 8 and 9 o'clock...
2/1/2018 7:00 AM 0.04 0.2 M T M early AM snow before 0700 obsn & after w/ breezy conditions
2/4/2018 7:00 AM T T M T M freezing drizzle to snow and breezy
2/5/2018 7:00 AM 0.01 M M M M early AM rain
2/9/2018 7:00 AM 0.00 0.0 M 0.0 M fog and drizzle beginning around 7 o'clock
2/10/2018 7:00 AM 0.08 2.2 M 2.0 M light snow and calm @ obsn
2/11/2018 7:00 AM 0.03 T M 1.5 M
2/14/2018 7:00 AM 0.00 0.0 M M M Mid forties during the four o'clock hour this AM with strong gusty winds during the five o'clock hour
2/16/2018 7:00 AM 0.01 0.1 M T M light snow last night to overcast and calm @ obsn
2/19/2018 7:00 AM 0.01 0.5 M 0.5 M early AM light snow
2/20/2018 7:00 AM 0.31 5.3 M 5.5 M
2/21/2018 7:00 AM 0.00 0.0 M 4.0 M clear & calm @ obsn w/ temps in the negative single digits
2/22/2018 7:00 AM 0.00 0.0 M 2.0 M overcast w/ temps in the mid teens
2/24/2018 7:00 AM 0.13 2.8 M 3.0 M
2/25/2018 7:00 AM 0.00 0.0 M 2.5 M
2/26/2018 7:00 AM 0.00 0.0 M 2.0 M
2/27/2018 7:00 AM 0.00 0.0 M 1.5 M
2/28/2018 7:00 AM 0.00 0.0 M 1.0 M
3/16/2018 7:00 AM 0.15 M M M M
3/19/2018 7:00 AM 0.54 T M T M on Sunday afternoon, lightning heard @ 3:45 pm, mostly rainfall w/ snow mix to clear & calm @ obsn
3/26/2018 7:00 AM 0.02 M M M M
3/27/2018 7:00 AM 0.30 0.2 M T M rain changing to snow on Monday evening into early Tuesday morning...
3/29/2018 7:00 AM 0.23 M M M M
4/1/2018 7:00 AM 0.02 M M M M
4/7/2018 7:00 AM 0.09 T M T M
4/21/2018 7:00 AM 0.22 T M T M light rain/snow mix early morning & @ obsn
4/24/2018 7:00 AM 0.17 T M T M
4/25/2018 7:00 AM 0.16 M M M M
5/2/2018 7:00 AM 0.11 M M M M
5/3/2018 7:00 AM 0.86 M M M M
5/4/2018 7:00 AM 0.45 M M M M
5/12/2018 7:00 AM 0.06 M M M M
5/13/2018 7:00 AM 0.16 M M M M
5/19/2018 7:00 AM 0.67 M M M M Hail occurred around 4;30 pm on Friday (5-18) and some still present on ground two hours later
5/20/2018 7:00 AM 0.08 M M M M
5/29/2018 7:00 AM 0.11 M M M M
6/7/2018 7:00 AM 0.02 M M M M
6/18/2018 7:00 AM 0.23 M M M M
6/19/2018 7:00 AM 0.27 M M M M
6/20/2018 7:00 AM 0.16 M M M M
6/24/2018 7:00 AM 0.03 M M M M
6/25/2018 7:00 AM 0.06 M M M M
7/1/2018 7:00 AM 0.15 M M M M
7/16/2018 7:00 AM 0.37 M M M M
7/23/2018 7:00 AM 0.05 M M M M
7/24/2018 7:00 AM 0.71 M M M M
7/26/2018 7:00 AM 0.67 M M M M
7/27/2018 7:00 AM 0.14 M M M M
7/28/2018 7:00 AM 0.03 M M M M
7/29/2018 7:00 AM 0.08 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