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 12 0.98 0.80 31 0.80 31 0.00 0 0 8 0 5.8 3 2
Nov 12 0.79 0.33 30 0.33 11 0.00 19 1 1 0 0.0 0 0
Dec 12 0.56 0.00 8 0.00 8 0.00 0 0 0 0 0.0 0 0
Jan 13 0.35 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 13 0.46 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 13 1.48 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 13 1.79 0.23 1 0.23 1 0.00 0 0 1 0 0.0 0 0
May 13 2.33 1.22 11 1.22 11 0.00 0 0 6 1 0.0 0 0
June 13 1.74 0.20 30 0.20 30 0.00 0 0 3 4 0.0 0 0
July 13 1.26 0.71 28 0.71 28 0.00 0 0 10 6 0.0 0 0
Aug 13 1.38 0.50 27 0.50 27 0.00 0 0 8 8 0.0 0 0
Sept 13 1.32 5.75 30 5.75 27 0.00 3 1 12 0 0.0 0 0
Water Year Totals: 14.44" 9.74" 196 days 9.74" 174 0.00" 22 days 2 49 days 19 days 5.8" 3 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
10/1/2012 0.01
10/2/2012 0.00
10/3/2012 0.00
10/4/2012 0.00
10/5/2012 0.03
10/6/2012 0.01
10/7/2012 0.01
10/8/2012 0.00
10/9/2012 0.00
10/10/2012 0.00
10/11/2012 0.00
10/12/2012 0.00
10/13/2012 0.02
10/14/2012 0.09
10/15/2012 0.00
10/16/2012 0.00
10/17/2012 0.00
10/18/2012 0.00
10/19/2012 0.00
10/20/2012 0.00
10/21/2012 0.00
10/22/2012 0.00
10/23/2012 0.00
10/24/2012 0.00
10/25/2012 0.42
10/26/2012 0.21
10/27/2012 0.00
10/28/2012 0.00
10/29/2012 0.00
10/30/2012 0.00
10/31/2012 0.00
11/1/2012 0.00
11/2/2012 0.00
11/3/2012 0.00
11/4/2012 0.00
11/5/2012 0.00
11/6/2012 0.00
11/7/2012 0.00
11/8/2012 0.00
11/9/2012 0.00
11/10/2012 0.00
11/11/2012 0.33
11/12/2012 **
11/13/2012 **
11/14/2012 **
11/15/2012 **
11/16/2012 **
11/17/2012 **
11/18/2012 **
11/19/2012 **
11/20/2012 **
11/21/2012 **
11/22/2012 **
11/23/2012 **
11/24/2012 **
11/25/2012 **
11/26/2012 **
11/27/2012 **
11/28/2012 **
11/29/2012 **
11/30/2012 0.00
12/1/2012 0.00
12/2/2012 0.00
12/3/2012 0.00
12/4/2012 0.00
12/5/2012 0.00
12/6/2012 0.00
12/7/2012
12/8/2012
12/9/2012
12/10/2012
12/11/2012
12/12/2012
12/13/2012
12/14/2012
12/15/2012
12/16/2012
12/17/2012
12/18/2012 0.00
12/19/2012
12/20/2012
12/21/2012 0.00
12/22/2012
12/23/2012
12/24/2012
12/25/2012
12/26/2012
12/27/2012
12/28/2012
12/29/2012
12/30/2012
12/31/2012
Day of YearDaily PrcpMultiday Prcp
1/1/2013
1/2/2013
1/3/2013
1/4/2013
1/5/2013
1/6/2013
1/7/2013
1/8/2013
1/9/2013
1/10/2013
1/11/2013
1/12/2013
1/13/2013
1/14/2013
1/15/2013
1/16/2013
1/17/2013
1/18/2013
1/19/2013
1/20/2013
1/21/2013
1/22/2013
1/23/2013
1/24/2013
1/25/2013
1/26/2013
1/27/2013
1/28/2013
1/29/2013
1/30/2013
1/31/2013
2/1/2013
2/2/2013
2/3/2013
2/4/2013
2/5/2013
2/6/2013
2/7/2013
2/8/2013
2/9/2013
2/10/2013
2/11/2013
2/12/2013
2/13/2013
2/14/2013
2/15/2013
2/16/2013
2/17/2013
2/18/2013
2/19/2013
2/20/2013
2/21/2013
2/22/2013
2/23/2013
2/24/2013
2/25/2013
2/26/2013
2/27/2013
2/28/2013
3/1/2013
3/2/2013
3/3/2013
3/4/2013
3/5/2013
3/6/2013
3/7/2013
3/8/2013
3/9/2013
3/10/2013
3/11/2013
3/12/2013
3/13/2013
3/14/2013
3/15/2013
3/16/2013
3/17/2013
3/18/2013
3/19/2013
3/20/2013
3/21/2013
3/22/2013
3/23/2013
3/24/2013
3/25/2013
3/26/2013
3/27/2013
3/28/2013
3/29/2013
3/30/2013
3/31/2013
Day of YearDaily PrcpMultiday Prcp
4/1/2013
4/2/2013
4/3/2013 0.23
4/4/2013
4/5/2013
4/6/2013
4/7/2013
4/8/2013
4/9/2013
4/10/2013
4/11/2013
4/12/2013
4/13/2013
4/14/2013
4/15/2013
4/16/2013
4/17/2013
4/18/2013
4/19/2013
4/20/2013
4/21/2013
4/22/2013
4/23/2013
4/24/2013
4/25/2013
4/26/2013
4/27/2013
4/28/2013
4/29/2013
4/30/2013
5/1/2013
5/2/2013
5/3/2013
5/4/2013
5/5/2013
5/6/2013
5/7/2013
5/8/2013 0.16
5/9/2013 0.38
5/10/2013 0.18
5/11/2013 T
5/12/2013 0.00
5/13/2013 0.00
5/14/2013
5/15/2013
5/16/2013
5/17/2013
5/18/2013
5/19/2013
5/20/2013
5/21/2013
5/22/2013
5/23/2013 0.03
5/24/2013
5/25/2013
5/26/2013
5/27/2013
5/28/2013 0.00
5/29/2013 0.02
5/30/2013 0.45
5/31/2013 0.00
6/1/2013 0.00
6/2/2013 0.00
6/3/2013 0.00
6/4/2013 0.00
6/5/2013 0.04
6/6/2013 T
6/7/2013 0.00
6/8/2013 0.00
6/9/2013 0.00
6/10/2013 0.00
6/11/2013 0.00
6/12/2013 0.00
6/13/2013 0.00
6/14/2013 0.01
6/15/2013 0.00
6/16/2013 0.00
6/17/2013 0.00
6/18/2013 0.00
6/19/2013 0.00
6/20/2013 0.00
6/21/2013 0.00
6/22/2013 0.00
6/23/2013 T
6/24/2013 T
6/25/2013 0.00
6/26/2013 0.00
6/27/2013 0.00
6/28/2013 0.00
6/29/2013 0.15
6/30/2013 T
Day of YearDaily PrcpMultiday Prcp
7/1/2013 T
7/2/2013 T
7/3/2013 0.00
7/4/2013 0.00
7/5/2013
7/6/2013
7/7/2013
7/8/2013 0.04
7/9/2013 0.20
7/10/2013 0.00
7/11/2013 0.00
7/12/2013 T
7/13/2013 0.09
7/14/2013 0.02
7/15/2013 0.02
7/16/2013 T
7/17/2013 0.00
7/18/2013 0.00
7/19/2013 0.19
7/20/2013 0.00
7/21/2013 T
7/22/2013 0.00
7/23/2013 0.00
7/24/2013 0.00
7/25/2013 0.01
7/26/2013 T
7/27/2013 0.00
7/28/2013 0.02
7/29/2013 0.02
7/30/2013 0.10
7/31/2013 0.00
8/1/2013 0.08
8/2/2013 T
8/3/2013 T
8/4/2013
8/5/2013 0.00
8/6/2013 0.02
8/7/2013 T
8/8/2013 0.00
8/9/2013 0.06
8/10/2013
8/11/2013
8/12/2013 0.00
8/13/2013 0.02
8/14/2013 0.00
8/15/2013 0.02
8/16/2013 T
8/17/2013
8/18/2013 0.00
8/19/2013 T
8/20/2013 0.00
8/21/2013 0.00
8/22/2013 T
8/23/2013 0.26
8/24/2013 T
8/25/2013 0.03
8/26/2013 T
8/27/2013 0.01
8/28/2013 0.00
8/29/2013 0.00
8/30/2013 0.00
8/31/2013 0.00
9/1/2013 0.01
9/2/2013 0.00
9/3/2013 0.00
9/4/2013 0.00
9/5/2013 0.00
9/6/2013 0.00
9/7/2013 0.00
9/8/2013 0.00
9/9/2013 0.00
9/10/2013 1.04
9/11/2013 0.19
9/12/2013 1.51
9/13/2013 1.19
9/14/2013 0.04
9/15/2013 0.00
9/16/2013 1.04
9/17/2013 0.01
9/18/2013 0.00
9/19/2013 0.09
9/20/2013 0.00
9/21/2013 0.00
9/22/2013 0.00
9/23/2013 0.46
9/24/2013 **
9/25/2013 **
9/26/2013 0.00
9/27/2013 0.01
9/28/2013 0.16
9/29/2013 0.00
9/30/2013 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2012 7:00 AM 0.01 M M M M
10/2/2012 7:00 AM 0.00 0.0 M M M
10/3/2012 7:00 AM 0.00 0.0 M M M
10/4/2012 7:00 AM 0.00 0.0 M M M
10/5/2012 7:00 AM 0.03 0.5 0.03 0.5 M
10/6/2012 7:00 AM 0.01 M M 0.0 M
10/7/2012 7:00 AM 0.01 M M M M Mix of light very drizzle, snow grains, snow pellets and regular snow off and/on over the course of the day.
10/8/2012 7:00 AM 0.00 0.0 M M M
10/9/2012 7:00 AM 0.00 0.0 M M M
10/10/2012 7:00 AM 0.00 0.0 M M M
10/11/2012 7:00 AM 0.00 0.0 M M M
10/12/2012 7:00 AM 0.00 0.0 M M M
10/13/2012 7:00 AM 0.02 M M M M Thunder around 10:30-11:00pm.
10/14/2012 7:00 AM 0.09 M M M M
10/15/2012 7:00 AM 0.00 0.0 M M M
10/16/2012 7:00 AM 0.00 0.0 M M M
10/17/2012 7:00 AM 0.00 0.0 M M M
10/18/2012 7:00 AM 0.00 0.0 M M M
10/19/2012 7:00 AM 0.00 0.0 M M M
10/20/2012 7:00 AM 0.00 0.0 M M M
10/21/2012 7:00 AM 0.00 0.0 M M M
10/22/2012 7:00 AM 0.00 0.0 M M M
10/23/2012 7:00 AM 0.00 0.0 M M M
10/24/2012 7:00 AM 0.00 0.0 M M M
10/25/2012 7:00 AM 0.42 2.5 M M M First 0.18" got into the automated (Davis) gauge before it got clogged with snow. Remaining 0.24" registered as the snow in/on the gauge melted over the course of the day.
10/26/2012 7:00 AM 0.21 2.8 0.21 3.0 M
10/27/2012 7:00 AM 0.00 0.0 M M M
10/28/2012 7:00 AM 0.00 0.0 M M M
10/29/2012 7:00 AM 0.00 0.0 M M M
10/30/2012 7:00 AM 0.00 0.0 M M M
10/31/2012 7:00 AM 0.00 0.0 M M M
11/1/2012 7:00 AM 0.00 0.0 M M M
11/2/2012 7:00 AM 0.00 0.0 M M M
11/3/2012 7:00 AM 0.00 0.0 M M M
11/4/2012 7:00 AM 0.00 0.0 M M M
11/5/2012 7:00 AM 0.00 0.0 M M M
11/6/2012 7:00 AM 0.00 0.0 M M M
11/7/2012 7:00 AM 0.00 0.0 M M M
11/8/2012 7:00 AM 0.00 0.0 M M M
11/9/2012 7:00 AM 0.00 0.0 M M M
11/10/2012 7:00 AM 0.00 0.0 M M M
11/11/2012 7:00 AM 0.33 M M M M Melted equivalent in Davis gauge after the event. Did not get snow depth.
12/1/2012 7:00 AM 0.00 0.0 M M M
12/2/2012 7:00 AM 0.00 0.0 M M M
12/3/2012 7:00 AM 0.00 0.0 M M M
12/4/2012 7:00 AM 0.00 0.0 M M M
12/5/2012 7:00 AM 0.00 0.0 M M M
12/6/2012 7:00 AM 0.00 0.0 M M M Finally, a cloudy morning!
12/18/2012 7:00 AM 0.00 0.0 M M M
12/21/2012 7:00 AM 0.00 0.0 M M M
4/3/2013 7:00 AM 0.23 M M M M
5/8/2013 7:00 AM 0.16 M M M M
5/9/2013 7:00 AM 0.38 M M M M
5/10/2013 7:00 AM 0.18 M M M M
5/11/2013 7:00 AM T M M M M
5/12/2013 7:00 AM 0.00 0.0 M M M
5/13/2013 7:00 AM 0.00 0.0 M M M
5/23/2013 7:00 AM 0.03 M M M M
5/28/2013 7:00 AM 0.00 0.0 M M M
5/29/2013 7:00 AM 0.02 M M M M Unusual to have rain and even a rainbow to our west in the morning.
5/30/2013 7:00 AM 0.45 M M M M Lots of rain yesterday morning, ending before noon.
5/31/2013 7:00 AM 0.00 0.0 M M M
6/1/2013 7:00 AM 0.00 0.0 M M M
6/2/2013 7:00 AM 0.00 0.0 M M M
6/3/2013 7:00 AM 0.00 0.0 M M M
6/4/2013 7:00 AM 0.00 0.0 M M M
6/5/2013 7:00 AM 0.04 M M M M
6/6/2013 7:00 AM T M M M M A little bit of drizzle was falling yesterday morning, around 8am.
6/7/2013 7:00 AM 0.00 0.0 M M M
6/8/2013 7:00 AM 0.00 0.0 M M M
6/9/2013 7:00 AM 0.00 0.0 M M M
6/10/2013 7:00 AM 0.00 0.0 M M M
6/11/2013 7:00 AM 0.00 0.0 M M M A couple of drops in the vicinity, but none recorded at the station.
6/12/2013 7:00 AM 0.00 0.0 M M M
6/13/2013 7:00 AM 0.00 0.0 M M M
6/14/2013 7:00 AM 0.01 M M M M
6/15/2013 7:00 AM 0.00 0.0 M M M
6/16/2013 7:00 AM 0.00 0.0 M M M
6/17/2013 7:00 AM 0.00 0.0 M M M
6/18/2013 7:00 AM 0.00 0.0 M M M
6/19/2013 7:00 AM 0.00 0.0 M M M There was a trace of rain at Longmont High School in the 5:30-7:30 time window, but I wasn't home to verify that this rain affected my station, as well.
6/20/2013 7:00 AM 0.00 0.0 M M M
6/21/2013 7:00 AM 0.00 0.0 M M M
6/22/2013 7:00 AM 0.00 0.0 M M M
6/23/2013 7:00 AM T M M M M A few sprinkles around 3pm
6/24/2013 7:00 AM T M M M M
6/25/2013 7:00 AM 0.00 0.0 M M M
6/26/2013 7:00 AM 0.00 0.0 M M M
6/27/2013 7:00 AM 0.00 0.0 M M M
6/28/2013 7:00 AM 0.00 0.0 M M M
6/29/2013 7:00 AM 0.15 M M M M
6/30/2013 7:00 AM T M M M M
7/1/2013 7:00 AM T M M M M
7/2/2013 7:00 AM T M M M M
7/3/2013 7:00 AM 0.00 0.0 M M M
7/4/2013 7:00 AM 0.00 0.0 M M M
7/8/2013 7:00 AM 0.04 M M M M
7/9/2013 7:00 AM 0.20 M M M M Heavy rain shower around 3pm. All rain fell in ~12 min.
7/10/2013 7:00 AM 0.00 0.0 M M M
7/11/2013 7:00 AM 0.00 0.0 M M M
7/12/2013 7:00 AM T M M M M Storms were to our south last night
7/13/2013 7:00 AM 0.09 M M M M Multiple rain episodes during the afternoon, evening and night
7/14/2013 7:00 AM 0.02 M M M M
7/15/2013 7:00 AM 0.02 M M M M
7/16/2013 7:00 AM T M M M M
7/17/2013 7:00 AM 0.00 0.0 M M M
7/18/2013 7:00 AM 0.00 0.0 M M M
7/19/2013 7:00 AM 0.19 M M M M
7/20/2013 7:00 AM 0.00 0.0 M M M
7/21/2013 7:00 AM T M M M M
7/22/2013 7:00 AM 0.00 0.0 M M M
7/23/2013 7:00 AM 0.00 0.0 M M M
7/24/2013 7:00 AM 0.00 0.0 M M M
7/25/2013 7:00 AM 0.01 M M M M
7/26/2013 7:00 AM T M M M M
7/27/2013 7:00 AM 0.00 0.0 M M M
7/28/2013 7:00 AM 0.02 M M M M
7/29/2013 7:00 AM 0.02 M M M M
7/30/2013 7:00 AM 0.10 M M M M
7/31/2013 7:00 AM 0.00 0.0 M M M
8/1/2013 7:00 AM 0.08 M M M M
8/2/2013 7:00 AM T M M M M
8/3/2013 7:00 AM T M M M M
8/5/2013 7:00 AM 0.00 0.0 M M M
8/6/2013 7:00 AM 0.02 M M M M
8/7/2013 7:00 AM T 0.0 M M M
8/8/2013 7:00 AM 0.00 0.0 M M M
8/9/2013 7:00 AM 0.06 M M M M Thunderstorms around 10-10:30pm.
8/12/2013 7:00 AM 0.00 0.0 M M M Thunderstorms in the vicinity around 10pm.
8/13/2013 7:00 AM 0.02 M M M M
8/14/2013 7:00 AM 0.00 0.0 M M M
8/15/2013 7:00 AM 0.02 M M M M
8/16/2013 7:00 AM T M M M M Surprised this wasn't measurable. It must have been very close, but didn't quite trip the automated gauge. Isolated cell on radar brought an off-and-on couple of showers of big drops over several minutes. It seemed pretty solid for a while there. Thus, the expectation that it would have been enough to tip the tipping bucket in the gauge.
8/18/2013 7:00 AM 0.00 0.0 M M M
8/19/2013 7:00 AM T M M M M Brief sprinkle
8/20/2013 7:00 AM 0.00 0.0 M M M
8/21/2013 7:00 AM 0.00 0.0 M M M
8/22/2013 7:00 AM T M M M M
8/23/2013 7:00 AM 0.26 M M M M Nice downpour around 11pm.
8/24/2013 7:00 AM T M M M M Wasn't home, but it rained lightly a few times very nearby, where I was. So, this trace is an assumption based on the skies, etc.
8/25/2013 7:00 AM 0.03 M M M M
8/26/2013 7:00 AM T M M M M
8/27/2013 7:00 AM 0.01 M M M M
8/28/2013 7:00 AM 0.00 0.0 M M M
8/29/2013 7:00 AM 0.00 0.0 M M M
8/30/2013 7:00 AM 0.00 0.0 M M M
8/31/2013 7:00 AM 0.00 0.0 M M M
9/1/2013 7:00 AM 0.01 M M M M Rain fell in the afternoon. Strong thunder/lightning around 3:20 a.m., but no rain. Must have just missed us.
9/2/2013 7:00 AM 0.00 0.0 M M M
9/3/2013 7:00 AM 0.00 0.0 M M M
9/4/2013 7:00 AM 0.00 0.0 M M M
9/5/2013 7:00 AM 0.00 0.0 M M M
9/6/2013 7:00 AM 0.00 0.0 M M M
9/7/2013 7:00 AM 0.00 0.0 M M M
9/8/2013 7:00 AM 0.00 0.0 M M M
9/9/2013 7:00 AM 0.00 0.0 M M M
9/10/2013 7:00 AM 1.04 M M M M
9/11/2013 7:00 AM 0.19 M M M M
9/12/2013 7:00 AM 1.51 M M M M Compared to our neighbors, this seems like an underestimate. Same issue with yesterday's observation.
9/13/2013 7:00 AM 1.19 M M M M
9/14/2013 7:00 AM 0.04 M M M M
9/15/2013 7:00 AM 0.00 0.0 M M M
9/16/2013 7:00 AM 1.04 M M M M Again, i wonder if our automated gauge is under-catching. Seems consistently low compared to nearby stations during this event.
9/17/2013 7:00 AM 0.01 M M M M
9/18/2013 7:00 AM 0.00 0.0 M M M
9/19/2013 7:00 AM 0.09 M M M M 0.06 from t-storms yesterday afternoon, then some t-storms in the middle of the night and some stratiform rain just before dawn.
9/20/2013 7:00 AM 0.00 0.0 M M M
9/21/2013 7:00 AM 0.00 0.0 M M M
9/22/2013 7:00 AM 0.00 0.0 M M M
9/23/2013 7:00 AM 0.46 M M M M
9/27/2013 7:00 AM 0.01 M M M M
9/28/2013 7:00 AM 0.16 M M M M
9/29/2013 7:00 AM 0.00 0.0 M M M
9/30/2013 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/12/2012 11/30/2012 7:00 AM 19 0.00 0.0 0.00 No precipitation since 11/11.
9/24/2013 9/26/2013 7:00 AM 3 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