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 11 0.98 1.40 27 1.40 27 0.00 0 0 3 3 9.3 1 1
Nov 11 0.79 0.59 30 0.59 30 0.00 0 0 2 3 7.7 2 1
Dec 11 0.56 0.00 16 0.00 16 0.00 0 0 0 1 11.3 2 0
Jan 12 0.35 0.00 3 0.00 3 0.00 0 0 0 0 0.0 0 0
Feb 12 0.46 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 12 1.48 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 12 1.79 0.72 5 0.72 5 0.00 0 0 4 0 0.0 0 0
May 12 2.33 0.13 6 0.13 6 0.00 0 0 3 1 0.0 0 0
June 12 1.74 0.13 13 0.13 13 0.00 0 0 6 3 0.0 0 0
July 12 1.26 1.82 26 1.82 26 0.00 0 0 11 2 0.0 0 0
Aug 12 1.38 0.15 30 0.15 30 0.00 0 0 4 4 0.0 0 0
Sept 12 1.32 1.39 20 1.39 20 0.00 0 0 8 1 0.0 0 0
Water Year Totals: 14.44" 6.33" 176 days 6.33" 176 0.00" 0 days 0 41 days 18 days 28.3" 5 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
10/1/2011 0.00
10/2/2011 0.00
10/3/2011 0.00
10/4/2011 0.00
10/5/2011 T
10/6/2011 0.00
10/7/2011 T
10/8/2011 T
10/9/2011 0.38
10/10/2011 0.00
10/11/2011 0.00
10/12/2011 0.00
10/13/2011 0.00
10/14/2011 0.00
10/15/2011 0.00
10/16/2011 0.00
10/17/2011 0.00
10/18/2011 0.04
10/19/2011 0.00
10/20/2011 0.00
10/21/2011 0.00
10/22/2011 0.00
10/23/2011 0.00
10/24/2011 0.00
10/25/2011 0.00
10/26/2011 0.98
10/27/2011
10/28/2011
10/29/2011 0.00
10/30/2011
10/31/2011
11/1/2011 0.00
11/2/2011 0.58
11/3/2011 T
11/4/2011 0.00
11/5/2011 0.00
11/6/2011 0.00
11/7/2011 0.00
11/8/2011 0.00
11/9/2011 0.00
11/10/2011 0.00
11/11/2011 0.00
11/12/2011 0.00
11/13/2011 0.00
11/14/2011 0.00
11/15/2011 0.00
11/16/2011 0.00
11/17/2011 0.00
11/18/2011 0.00
11/19/2011 0.01
11/20/2011 T
11/21/2011 0.00
11/22/2011 0.00
11/23/2011 0.00
11/24/2011 0.00
11/25/2011 0.00
11/26/2011 T
11/27/2011 0.00
11/28/2011 0.00
11/29/2011 0.00
11/30/2011 0.00
12/1/2011
12/2/2011
12/3/2011
12/4/2011
12/5/2011 T
12/6/2011 0.00
12/7/2011 0.00
12/8/2011 0.00
12/9/2011 0.00
12/10/2011 0.00
12/11/2011 0.00
12/12/2011 0.00
12/13/2011 0.00
12/14/2011 0.00
12/15/2011 0.00
12/16/2011 0.00
12/17/2011 0.00
12/18/2011 0.00
12/19/2011 0.00
12/20/2011 M
12/21/2011 0.00
12/22/2011 M
12/23/2011
12/24/2011
12/25/2011
12/26/2011
12/27/2011
12/28/2011
12/29/2011
12/30/2011
12/31/2011
Day of YearDaily PrcpMultiday Prcp
1/1/2012 0.00
1/2/2012 0.00
1/3/2012 0.00
1/4/2012
1/5/2012
1/6/2012
1/7/2012
1/8/2012
1/9/2012
1/10/2012
1/11/2012
1/12/2012
1/13/2012
1/14/2012
1/15/2012
1/16/2012
1/17/2012
1/18/2012
1/19/2012
1/20/2012
1/21/2012
1/22/2012
1/23/2012
1/24/2012
1/25/2012
1/26/2012
1/27/2012
1/28/2012
1/29/2012
1/30/2012
1/31/2012
2/1/2012
2/2/2012
2/3/2012
2/4/2012
2/5/2012
2/6/2012
2/7/2012
2/8/2012
2/9/2012
2/10/2012
2/11/2012
2/12/2012
2/13/2012
2/14/2012
2/15/2012
2/16/2012
2/17/2012
2/18/2012
2/19/2012
2/20/2012
2/21/2012
2/22/2012
2/23/2012
2/24/2012
2/25/2012
2/26/2012
2/27/2012
2/28/2012
2/29/2012
3/1/2012
3/2/2012
3/3/2012
3/4/2012
3/5/2012
3/6/2012
3/7/2012
3/8/2012
3/9/2012
3/10/2012
3/11/2012
3/12/2012
3/13/2012
3/14/2012
3/15/2012
3/16/2012
3/17/2012
3/18/2012
3/19/2012
3/20/2012
3/21/2012
3/22/2012
3/23/2012
3/24/2012
3/25/2012
3/26/2012
3/27/2012
3/28/2012
3/29/2012
3/30/2012
3/31/2012
Day of YearDaily PrcpMultiday Prcp
4/1/2012
4/2/2012
4/3/2012 0.03
4/4/2012
4/5/2012
4/6/2012
4/7/2012
4/8/2012
4/9/2012
4/10/2012
4/11/2012
4/12/2012 0.24
4/13/2012
4/14/2012
4/15/2012 0.44
4/16/2012
4/17/2012
4/18/2012
4/19/2012
4/20/2012
4/21/2012
4/22/2012 0.01
4/23/2012 0.00
4/24/2012
4/25/2012
4/26/2012
4/27/2012
4/28/2012
4/29/2012
4/30/2012
5/1/2012
5/2/2012
5/3/2012
5/4/2012
5/5/2012
5/6/2012
5/7/2012
5/8/2012
5/9/2012
5/10/2012
5/11/2012
5/12/2012 0.06
5/13/2012 0.05
5/14/2012 T
5/15/2012
5/16/2012
5/17/2012 0.00
5/18/2012 0.00
5/19/2012 0.02
5/20/2012
5/21/2012
5/22/2012
5/23/2012
5/24/2012
5/25/2012
5/26/2012
5/27/2012
5/28/2012
5/29/2012
5/30/2012
5/31/2012
6/1/2012
6/2/2012
6/3/2012 0.03
6/4/2012 0.01
6/5/2012
6/6/2012 0.00
6/7/2012 T
6/8/2012
6/9/2012 0.00
6/10/2012 0.00
6/11/2012 0.00
6/12/2012
6/13/2012
6/14/2012
6/15/2012 0.01
6/16/2012
6/17/2012
6/18/2012
6/19/2012
6/20/2012
6/21/2012
6/22/2012
6/23/2012
6/24/2012
6/25/2012 0.02
6/26/2012
6/27/2012 0.05
6/28/2012 T
6/29/2012 0.01
6/30/2012 T
Day of YearDaily PrcpMultiday Prcp
7/1/2012 0.00
7/2/2012 0.00
7/3/2012 0.09
7/4/2012 0.00
7/5/2012 0.00
7/6/2012 0.06
7/7/2012 0.16
7/8/2012 1.01
7/9/2012 0.06
7/10/2012 0.11
7/11/2012 0.00
7/12/2012 T
7/13/2012 0.00
7/14/2012 0.00
7/15/2012
7/16/2012 T
7/17/2012 0.03
7/18/2012 0.00
7/19/2012 0.00
7/20/2012 0.00
7/21/2012 0.00
7/22/2012 0.00
7/23/2012
7/24/2012
7/25/2012 0.11
7/26/2012 0.04
7/27/2012 0.00
7/28/2012
7/29/2012
7/30/2012 0.06
7/31/2012 0.09
8/1/2012 0.00
8/2/2012 0.09
8/3/2012 0.01
8/4/2012 T
8/5/2012 0.00
8/6/2012 0.00
8/7/2012 0.00
8/8/2012 0.00
8/9/2012 0.00
8/10/2012
8/11/2012 T
8/12/2012 T
8/13/2012 0.00
8/14/2012 0.00
8/15/2012 0.00
8/16/2012 0.00
8/17/2012 0.00
8/18/2012 T
8/19/2012 0.00
8/20/2012 0.00
8/21/2012 0.02
8/22/2012 0.00
8/23/2012 0.03
8/24/2012 0.00
8/25/2012 0.00
8/26/2012 0.00
8/27/2012 0.00
8/28/2012 0.00
8/29/2012 0.00
8/30/2012 0.00
8/31/2012 0.00
9/1/2012 0.00
9/2/2012 0.00
9/3/2012 0.00
9/4/2012 0.02
9/5/2012 0.00
9/6/2012
9/7/2012 0.05
9/8/2012 T
9/9/2012 0.00
9/10/2012 0.00
9/11/2012
9/12/2012 0.40
9/13/2012 0.19
9/14/2012 0.00
9/15/2012
9/16/2012
9/17/2012
9/18/2012
9/19/2012
9/20/2012
9/21/2012 0.00
9/22/2012 0.00
9/23/2012 0.00
9/24/2012 0.00
9/25/2012 0.01
9/26/2012 0.40
9/27/2012 0.30
9/28/2012 0.02
9/29/2012
9/30/2012



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 7:00 AM 0.00 0.0 M M M
10/2/2011 7:00 AM 0.00 0.0 M M M
10/3/2011 7:00 AM 0.00 0.0 M M M
10/4/2011 7:00 AM 0.00 0.0 M M M
10/5/2011 7:00 AM T M M M M A few late afternoon sprinkles
10/6/2011 7:00 AM 0.00 0.0 M M M
10/7/2011 7:00 AM T M M M M
10/8/2011 7:00 AM T M M M M Wet deck, but no accumulation, so I am assuming a trace overnight.
10/9/2011 7:00 AM 0.38 M M M M Occasional splatters on windshield hinting at not-quite completely melted snow during the day.
10/10/2011 7:00 AM 0.00 0.0 M M M
10/11/2011 7:00 AM 0.00 0.0 M M M
10/12/2011 7:00 AM 0.00 0.0 M M M
10/13/2011 7:00 AM 0.00 0.0 M M M
10/14/2011 7:00 AM 0.00 0.0 M M M
10/15/2011 7:00 AM 0.00 0.0 M M M
10/16/2011 7:00 AM 0.00 0.0 M M M
10/17/2011 7:00 AM 0.00 0.0 M M M
10/18/2011 7:00 AM 0.04 M M M M Essentially all of this rain fell between 7am and 8am yesterday. Maybe just a sprinkle after 8.
10/19/2011 7:00 AM 0.00 0.0 M M M
10/20/2011 7:00 AM 0.00 0.0 M M M
10/21/2011 7:00 AM 0.00 0.0 M M M
10/22/2011 7:00 AM 0.00 0.0 M M M
10/23/2011 7:00 AM 0.00 0.0 M M M
10/24/2011 7:00 AM 0.00 0.0 M M M
10/25/2011 7:00 AM 0.00 0.0 M M M
10/26/2011 7:00 AM 0.98 9.3 M 9.3 M SWE is estimated based on eventual melted snow that fell through our automated gauge. Snowfall was measured on our deck.
10/29/2011 7:00 AM 0.00 0.0 M M M
11/1/2011 7:00 AM 0.00 0.0 M M M
11/2/2011 7:00 AM 0.58 7.5 M 7.5 M
11/3/2011 7:00 AM T T M M M
11/4/2011 7:00 AM 0.00 0.0 M M M
11/5/2011 7:00 AM 0.00 0.0 M M M
11/6/2011 7:00 AM 0.00 0.0 M M M
11/7/2011 7:00 AM 0.00 0.0 M M M
11/8/2011 7:00 AM 0.00 0.0 M M M
11/9/2011 7:00 AM 0.00 0.0 M M M
11/10/2011 7:00 AM 0.00 0.0 M M M
11/11/2011 7:00 AM 0.00 0.0 M M M
11/12/2011 7:00 AM 0.00 0.0 M M M
11/13/2011 7:00 AM 0.00 0.0 M M M
11/14/2011 7:00 AM 0.00 0.0 M M M
11/15/2011 7:00 AM 0.00 0.0 M M M
11/16/2011 7:00 AM 0.00 0.0 M M M
11/17/2011 7:00 AM 0.00 0.0 M M M
11/18/2011 7:00 AM 0.00 0.0 M M M
11/19/2011 7:00 AM 0.01 0.2 M M M Woke up to a some very light snow this morning.
11/20/2011 7:00 AM T M M M M Flurries early yesterday morning, after 7am.
11/21/2011 7:00 AM 0.00 0.0 M M M
11/22/2011 7:00 AM 0.00 0.0 M M M
11/23/2011 7:00 AM 0.00 0.0 M M M
11/24/2011 7:00 AM 0.00 0.0 M M M
11/25/2011 7:00 AM 0.00 0.0 M M M
11/26/2011 7:00 AM T M M M M Brief evening rain shower.
11/27/2011 7:00 AM 0.00 0.0 M M M
11/28/2011 7:00 AM 0.00 0.0 M M M
11/29/2011 7:00 AM 0.00 0.0 M M M
11/30/2011 7:00 AM 0.00 0.0 M M M
12/5/2011 7:00 AM T T M M M
12/6/2011 7:00 AM 0.00 0.0 M M M
12/7/2011 7:00 AM 0.00 0.0 M M M
12/8/2011 7:00 AM 0.00 0.0 M M M
12/9/2011 7:00 AM 0.00 0.0 M M M
12/10/2011 7:00 AM 0.00 0.0 M M M
12/11/2011 7:00 AM 0.00 0.0 M M M
12/12/2011 7:00 AM 0.00 0.0 M M M
12/13/2011 7:00 AM 0.00 0.0 M M M
12/14/2011 7:00 AM 0.00 0.0 M M M
12/15/2011 7:00 AM 0.00 0.0 M M M
12/16/2011 7:00 AM 0.00 0.0 M M M
12/17/2011 7:00 AM 0.00 0.0 M M M
12/18/2011 7:00 AM 0.00 0.0 M M M
12/19/2011 7:00 AM 0.00 0.0 M M M
12/20/2011 7:00 AM M 0.3 M M M Estimated snowfall. No liquid equivalent measurement.
12/21/2011 7:00 AM 0.00 0.0 M M M
12/22/2011 9:00 AM M 11.0 M M M
1/1/2012 7:00 AM 0.00 0.0 M M M
1/2/2012 7:00 AM 0.00 0.0 M M M
1/3/2012 7:00 AM 0.00 0.0 M M M
4/3/2012 7:00 AM 0.03 0.0 M 0.0 M
4/12/2012 7:00 AM 0.24 M M M M FINALLY, SOME RAIN! Most, if not all of it fell between 11pm and 12am. We had a tiny bit of rain at about 10pm, too.
4/15/2012 7:00 AM 0.44 M M M M
4/22/2012 7:00 AM 0.01 M M M M
4/23/2012 7:00 AM 0.00 0.0 M M M
5/12/2012 7:00 AM 0.06 M M M M
5/13/2012 7:00 AM 0.05 M M M M
5/14/2012 7:00 AM T M M M M
5/17/2012 7:00 AM 0.00 0.0 M M M
5/18/2012 7:00 AM 0.00 0.0 M M M
5/19/2012 7:00 AM 0.02 M M M M Nice lightning show around 8:30-9:00, but only a few drops of rain around 9. Measurable precip happened overnight.
6/3/2012 7:00 AM 0.03 M M M M Rain gauge was clogged causing problems with reports made in recent weeks. Now everything seems to be OK.
6/4/2012 7:00 AM 0.01 M M M M
6/6/2012 7:00 AM 0.00 0.0 M M M
6/7/2012 7:00 AM T M M M M
6/9/2012 7:00 AM 0.00 0.0 M M M
6/10/2012 7:00 AM 0.00 0.0 M M M
6/11/2012 7:00 AM 0.00 0.0 M M M
6/15/2012 7:00 AM 0.01 M M M M Thunderstorm in the middle of the night. Lots of thunder, but apparently not much rain.
6/25/2012 7:00 AM 0.02 M M M M Odd little thunderstorm around 7:30pm. Big drops, esp. at the beginning. Lots of thunder.
6/27/2012 7:00 AM 0.05 M M M M
6/28/2012 7:00 AM T M M M M
6/29/2012 7:00 AM 0.01 M M M M
6/30/2012 7:00 AM T M M M M
7/1/2012 7:00 AM 0.00 0.0 M M M
7/2/2012 7:00 AM 0.00 0.0 M M M
7/3/2012 7:00 AM 0.09 M M M M Thunderstorm around 8-8:30pm. Some fairly strong lightning at times.
7/4/2012 7:00 AM 0.00 0.0 M M M
7/5/2012 7:00 AM 0.00 0.0 M M M
7/6/2012 7:00 AM 0.06 M M M M
7/7/2012 7:00 AM 0.16 M M M M
7/8/2012 7:00 AM 1.01 M M M M Period of heavy rain around 5:30-6:00, while we weren't home (we were a few miles away), then fairly steady, stratiform rain for hours with very occasional lightning, some of which was strong.
7/9/2012 7:00 AM 0.06 M M M M Strong lightning at about 1am, but only a little bit of rain. Were we on the periphery of this t-storm?
7/10/2012 7:00 AM 0.11 M M M M Nice, prolonged stratiform rain in the morning.
7/11/2012 7:00 AM 0.00 0.0 M M M
7/12/2012 7:00 AM T M M M M a few sprinkles
7/13/2012 7:00 AM 0.00 0.0 M M M
7/14/2012 7:00 AM 0.00 0.0 M M M
7/16/2012 7:00 AM T M M M M A few sprinkles
7/17/2012 7:00 AM 0.03 M M M M
7/18/2012 7:00 AM 0.00 0.0 M M M
7/19/2012 7:00 AM 0.00 0.0 M M M
7/20/2012 7:00 AM 0.00 0.0 M M M Lots of lightning 5-8pm, primarily to our east.
7/21/2012 7:00 AM 0.00 0.0 M M M
7/22/2012 7:00 AM 0.00 0.0 M M M
7/25/2012 7:00 AM 0.11 M M M M Off/on thunderstorms from 9pm through around 3am. Some intense lightning at times.
7/26/2012 7:00 AM 0.04 M M M M We were on the edge of a strong shower. It poured just to our northeast.
7/27/2012 7:00 AM 0.00 0.0 M M M
7/30/2012 7:00 AM 0.06 M M M M Most of it was pretty stratiform.
7/31/2012 7:00 AM 0.09 M M M M
8/1/2012 7:00 AM 0.00 0.0 M M M
8/2/2012 7:00 AM 0.09 M M M M
8/3/2012 7:00 AM 0.01 M M M M
8/4/2012 7:00 AM T M M M M Barely wet the ground
8/5/2012 7:00 AM 0.00 0.0 M M M
8/6/2012 7:00 AM 0.00 0.0 M M M
8/7/2012 7:00 AM 0.00 0.0 M M M
8/8/2012 7:00 AM 0.00 0.0 M M M
8/9/2012 7:00 AM 0.00 0.0 M M M
8/11/2012 7:00 AM T M M M M
8/12/2012 7:00 AM T M M M M
8/13/2012 7:00 AM 0.00 0.0 M M M
8/14/2012 7:00 AM 0.00 0.0 M M M
8/15/2012 7:00 AM 0.00 0.0 M M M
8/16/2012 7:00 AM 0.00 0.0 M M M
8/17/2012 7:00 AM 0.00 0.0 M M M
8/18/2012 7:00 AM T M M M M
8/19/2012 7:00 AM 0.00 0.0 M M M
8/20/2012 7:00 AM 0.00 0.0 M M M
8/21/2012 7:00 AM 0.02 M M M M
8/22/2012 7:00 AM 0.00 0.0 M M M
8/23/2012 7:00 AM 0.03 M M M M
8/24/2012 7:00 AM 0.00 0.0 M M M
8/25/2012 7:00 AM 0.00 0.0 M M M
8/26/2012 7:00 AM 0.00 0.0 M M M
8/27/2012 7:00 AM 0.00 0.0 M M M
8/28/2012 7:00 AM 0.00 0.0 M M M
8/29/2012 7:00 AM 0.00 0.0 M M M
8/30/2012 7:00 AM 0.00 0.0 M M M Was at a nearby park and felt a few drops around 6pm, so maybe a trace at the house.
8/31/2012 7:00 AM 0.00 0.0 M M M
9/1/2012 7:00 AM 0.00 0.0 M M M
9/2/2012 7:00 AM 0.00 0.0 M M M
9/3/2012 7:00 AM 0.00 0.0 M M M
9/4/2012 7:00 AM 0.02 M M M M
9/5/2012 7:00 AM 0.00 0.0 M M M
9/7/2012 7:00 AM 0.05 M M M M
9/8/2012 7:00 AM T M M M M Just a couple of sprinkles
9/9/2012 7:00 AM 0.00 0.0 M M M
9/10/2012 7:00 AM 0.00 0.0 M M M
9/12/2012 7:00 AM 0.40 M M M M
9/13/2012 7:00 AM 0.19 M M M M
9/14/2012 7:00 AM 0.00 0.0 M M M
9/21/2012 7:00 AM 0.00 0.0 M M M
9/22/2012 7:00 AM 0.00 0.0 M M M
9/23/2012 7:00 AM 0.00 0.0 M M M
9/24/2012 7:00 AM 0.00 0.0 M M M
9/25/2012 7:00 AM 0.01 M M M M
9/26/2012 7:00 AM 0.40 M M M M Nice lightning last night around 7pm
9/27/2012 7:00 AM 0.30 M M M M Strong-looking area of cumulus to our east at sunset appeared to the match the location of some serious echoes on radar at that time.
9/28/2012 7:00 AM 0.02 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