Station Overview Station Location
Station Number CO-JF-72 Latitude 39.8826
Station Name Broomfield 2.3 SSW Longitude -105.1056
County Jefferson Elevation (ft) 5436



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 1.04 2.24 31 2.24 31 0.00 0 0 8 2 3.8 3 3
Nov 17 0.84 0.11 30 0.11 30 0.00 0 0 1 4 1.3 2 2
Dec 17 0.60 0.20 31 0.20 31 0.00 0 0 4 1 3.0 4 8
Jan 18 0.41 0.50 31 0.50 31 0.00 0 0 3 2 5.1 3 10
Feb 18 0.42 0.49 24 0.49 24 0.00 0 0 4 6 8.0 5 13
March 18 1.58 1.74 31 1.74 31 0.00 0 0 5 0 6.7 3 4
April 18 1.97 1.03 30 1.03 30 0.00 0 0 7 3 3.1 4 4
May 18 2.23 2.33 31 2.33 31 0.00 0 0 13 1 0.0 0 0
June 18 1.87 0.69 30 0.69 30 0.00 0 0 3 5 0.0 0 0
July 18 1.79 1.68 31 1.68 31 0.00 0 0 9 6 0.0 0 0
Aug 18 1.83 0.66 31 0.66 31 0.00 0 0 4 8 0.0 0 0
Sept 18 1.17 1.06 30 1.06 30 0.00 0 0 4 2 0.0 0 0
Water Year Totals: 15.75" 12.73" 361 days 12.73" 361 0.00" 0 days 0 65 days 40 days 31.0" 24 days 44 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 0.01
10/2/2017 0.79
10/3/2017 0.44
10/4/2017 0.00
10/5/2017 T
10/6/2017 0.01
10/7/2017 0.00
10/8/2017 0.00
10/9/2017 0.59
10/10/2017 0.31
10/11/2017 0.00
10/12/2017 0.00
10/13/2017 0.00
10/14/2017 0.00
10/15/2017 0.00
10/16/2017 0.00
10/17/2017 0.00
10/18/2017 0.00
10/19/2017 0.00
10/20/2017 0.00
10/21/2017 0.00
10/22/2017 0.00
10/23/2017 0.00
10/24/2017 0.00
10/25/2017 0.00
10/26/2017 0.00
10/27/2017 0.04
10/28/2017 0.00
10/29/2017 0.00
10/30/2017 0.05
10/31/2017 T
11/1/2017 0.00
11/2/2017 0.00
11/3/2017 0.00
11/4/2017 0.00
11/5/2017 0.00
11/6/2017 0.00
11/7/2017 0.11
11/8/2017 T
11/9/2017 0.00
11/10/2017 0.00
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.00
11/14/2017 0.00
11/15/2017 0.00
11/16/2017 0.00
11/17/2017 0.00
11/18/2017 T
11/19/2017 0.00
11/20/2017 0.00
11/21/2017 0.00
11/22/2017 T
11/23/2017 0.00
11/24/2017 0.00
11/25/2017 0.00
11/26/2017 0.00
11/27/2017 0.00
11/28/2017 T
11/29/2017 0.00
11/30/2017 0.00
12/1/2017 0.00
12/2/2017 0.00
12/3/2017 0.00
12/4/2017 0.00
12/5/2017 0.00
12/6/2017 0.00
12/7/2017 0.00
12/8/2017 0.00
12/9/2017 0.00
12/10/2017 0.00
12/11/2017 0.00
12/12/2017 0.00
12/13/2017 0.00
12/14/2017 0.04
12/15/2017 0.00
12/16/2017 0.00
12/17/2017 T
12/18/2017 0.00
12/19/2017 0.00
12/20/2017 0.00
12/21/2017 0.03
12/22/2017 0.09
12/23/2017 0.00
12/24/2017 0.04
12/25/2017 0.00
12/26/2017 0.00
12/27/2017 0.00
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 T
1/2/2018 0.00
1/3/2018 0.00
1/4/2018 0.00
1/5/2018 0.00
1/6/2018 0.00
1/7/2018 0.00
1/8/2018 0.00
1/9/2018 0.00
1/10/2018 0.00
1/11/2018 0.00
1/12/2018 0.00
1/13/2018 0.00
1/14/2018 0.00
1/15/2018 T
1/16/2018 0.02
1/17/2018 0.00
1/18/2018 0.00
1/19/2018 0.00
1/20/2018 0.00
1/21/2018 0.23
1/22/2018 0.25
1/23/2018 0.00
1/24/2018 0.00
1/25/2018 0.00
1/26/2018 0.00
1/27/2018 0.00
1/28/2018 0.00
1/29/2018 0.00
1/30/2018 0.00
1/31/2018 0.00
2/1/2018 T
2/2/2018 0.00
2/3/2018 0.00
2/4/2018 T
2/5/2018 T
2/6/2018 0.00
2/7/2018 0.00
2/8/2018 0.00
2/9/2018 0.00
2/10/2018 0.01
2/11/2018 0.14
2/12/2018 T
2/13/2018 T
2/14/2018 0.00
2/15/2018 0.00
2/16/2018 T
2/17/2018 0.00
2/18/2018 0.00
2/19/2018 0.01
2/20/2018 0.33
2/21/2018 0.00
2/22/2018 0.00
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018 0.00
2/28/2018 0.00
3/1/2018 0.00
3/2/2018 0.00
3/3/2018 0.00
3/4/2018 0.00
3/5/2018 0.00
3/6/2018 0.00
3/7/2018 0.00
3/8/2018 0.00
3/9/2018 0.00
3/10/2018 0.00
3/11/2018 0.00
3/12/2018 0.00
3/13/2018 0.00
3/14/2018 0.00
3/15/2018 0.00
3/16/2018 0.09
3/17/2018 0.00
3/18/2018 0.00
3/19/2018 0.72
3/20/2018 0.00
3/21/2018 0.00
3/22/2018 0.00
3/23/2018 0.00
3/24/2018 0.00
3/25/2018 0.00
3/26/2018 0.00
3/27/2018 0.50
3/28/2018 0.00
3/29/2018 0.40
3/30/2018 0.03
3/31/2018 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2018 T
4/2/2018 0.00
4/3/2018 0.00
4/4/2018 0.00
4/5/2018 0.00
4/6/2018 T
4/7/2018 0.09
4/8/2018 0.00
4/9/2018 T
4/10/2018 0.03
4/11/2018 0.00
4/12/2018 0.00
4/13/2018 0.12
4/14/2018 0.00
4/15/2018 0.00
4/16/2018 0.00
4/17/2018 0.00
4/18/2018 0.00
4/19/2018 0.00
4/20/2018 0.00
4/21/2018 0.51
4/22/2018 0.04
4/23/2018 0.00
4/24/2018 0.16
4/25/2018 0.08
4/26/2018 0.00
4/27/2018 0.00
4/28/2018 0.00
4/29/2018 0.00
4/30/2018 0.00
5/1/2018 T
5/2/2018 0.03
5/3/2018 0.80
5/4/2018 0.86
5/5/2018 0.00
5/6/2018 0.00
5/7/2018 0.00
5/8/2018 0.00
5/9/2018 0.00
5/10/2018 0.00
5/11/2018 0.00
5/12/2018 0.03
5/13/2018 0.12
5/14/2018 0.06
5/15/2018 0.01
5/16/2018 0.00
5/17/2018 0.00
5/18/2018 0.00
5/19/2018 0.04
5/20/2018 0.08
5/21/2018 0.14
5/22/2018 0.00
5/23/2018 0.03
5/24/2018 0.00
5/25/2018 0.00
5/26/2018 0.00
5/27/2018 0.00
5/28/2018 0.00
5/29/2018 0.07
5/30/2018 0.00
5/31/2018 0.06
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 T
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 T
6/16/2018 0.00
6/17/2018 T
6/18/2018 0.27
6/19/2018 0.39
6/20/2018 0.03
6/21/2018 0.00
6/22/2018 0.00
6/23/2018 T
6/24/2018 0.00
6/25/2018 T
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 T
7/2/2018 0.00
7/3/2018 T
7/4/2018 0.00
7/5/2018 T
7/6/2018 0.02
7/7/2018 0.00
7/8/2018 T
7/9/2018 0.00
7/10/2018 0.00
7/11/2018 0.00
7/12/2018 0.00
7/13/2018 T
7/14/2018 0.00
7/15/2018 0.00
7/16/2018 0.28
7/17/2018 0.00
7/18/2018 0.02
7/19/2018 0.00
7/20/2018 0.00
7/21/2018 0.00
7/22/2018 T
7/23/2018 0.25
7/24/2018 0.15
7/25/2018 0.00
7/26/2018 0.12
7/27/2018 0.72
7/28/2018 0.10
7/29/2018 0.02
7/30/2018 0.00
7/31/2018 0.00
8/1/2018 0.00
8/2/2018 0.00
8/3/2018 0.00
8/4/2018 T
8/5/2018 T
8/6/2018 0.07
8/7/2018 0.01
8/8/2018 0.00
8/9/2018 0.00
8/10/2018 0.00
8/11/2018 0.00
8/12/2018 0.00
8/13/2018 0.00
8/14/2018 0.00
8/15/2018 0.04
8/16/2018 0.00
8/17/2018 0.00
8/18/2018 0.00
8/19/2018 0.54
8/20/2018 T
8/21/2018 T
8/22/2018 T
8/23/2018 0.00
8/24/2018 0.00
8/25/2018 T
8/26/2018 0.00
8/27/2018 T
8/28/2018 0.00
8/29/2018 0.00
8/30/2018 0.00
8/31/2018 T
9/1/2018 T
9/2/2018 0.00
9/3/2018 0.00
9/4/2018 0.00
9/5/2018 0.67
9/6/2018 0.15
9/7/2018 0.01
9/8/2018 0.00
9/9/2018 0.00
9/10/2018 T
9/11/2018 0.00
9/12/2018 0.00
9/13/2018 0.00
9/14/2018 0.00
9/15/2018 0.00
9/16/2018 0.00
9/17/2018 0.00
9/18/2018 0.00
9/19/2018 0.00
9/20/2018 0.23
9/21/2018 0.00
9/22/2018 0.00
9/23/2018 0.00
9/24/2018 0.00
9/25/2018 0.00
9/26/2018 0.00
9/27/2018 0.00
9/28/2018 0.00
9/29/2018 0.00
9/30/2018 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 6:00 AM 0.01 0.0 M 0.0 M
10/2/2017 6:16 AM 0.79 0.0 M 0.0 M Raining lightly and 40F at 0616 obsv time.
10/3/2017 7:12 AM 0.44 0.0 M 0.0 M 39F and mostly cloudy but not raining at 0712 obsv time.
10/4/2017 6:00 AM 0.00 0.0 M 0.0 M
10/5/2017 5:57 AM T 0.0 M 0.0 M Dense fog and misty drizzle at 0557 obsv time.
10/6/2017 6:42 AM 0.01 0.0 M 0.0 M
10/7/2017 6:00 AM 0.00 0.0 M 0.0 M
10/8/2017 6:02 AM 0.00 0.0 M 0.0 M
10/9/2017 6:25 AM 0.59 2.4 0.34 2.5 0.25 Rain began at 2025 and accumulated 0.25" of rain until turning to rain/snow mix at 0355, then all snow at 0445. Still snowing and 32F at 0625 obsv time. Very wet and heavy snow - branches bent. No snow accumulation on concrete or ashpalt surfaces.
10/10/2017 6:22 AM 0.31 1.0 M 2.0 M I believe the fluid in the gauge is from snow that melted upon contact.
10/11/2017 6:44 AM 0.00 0.0 M T M About one-third of the ground is covered in snow that is 1-2" deep, the remainder is bare ground.
10/12/2017 6:00 AM 0.00 0.0 M 0.0 M
10/13/2017 5:51 AM 0.00 0.0 M 0.0 M
10/14/2017 5:40 AM 0.00 0.0 M 0.0 M
10/15/2017 7:00 AM 0.00 0.0 M 0.0 M
10/16/2017 6:17 AM 0.00 0.0 M 0.0 M
10/17/2017 6:05 AM 0.00 0.0 M 0.0 M
10/18/2017 5:30 AM 0.00 0.0 M 0.0 M
10/19/2017 6:00 AM 0.00 0.0 M 0.0 M
10/20/2017 5:55 AM 0.00 0.0 M 0.0 M
10/21/2017 6:00 AM 0.00 0.0 M 0.0 M Windy and dry.
10/22/2017 6:22 AM 0.00 0.0 M 0.0 M Windy yesterday, but calm at 0622 obsv time this morning. Dry.
10/23/2017 6:19 AM 0.00 0.0 M 0.0 M Warm and windy. 50F
10/24/2017 6:15 AM 0.00 0.0 M 0.0 M
10/25/2017 6:17 AM 0.00 0.0 M 0.0 M
10/26/2017 6:20 AM 0.00 0.0 M 0.0 M
10/27/2017 6:43 AM 0.04 0.4 0.05 0.5 0.06 Snowboard measurement comes with an aterisk: Difficult to obtain layer of ice on snowboard. Ice was from snowfall that melted on contact (no rain). Ice on asphalt/concrete sublimated overnight. Some frost on surfaces that did not retain snow (windshields, sections of grassy areas).
10/28/2017 6:00 AM 0.00 0.0 M 0.0 M
10/29/2017 6:00 AM 0.00 0.0 M 0.0 M A little frost on rooftops only.
10/30/2017 6:51 AM 0.05 0.0 M T T Freezing rain at 0651 osbv time, but no snowfall. Updated gauge content on 10/31/17 after allowing frozen rain to melt on its own (no adding, then subtracting step).
10/31/2017 6:32 AM T T T T T
11/1/2017 6:30 AM 0.00 0.0 M 0.0 M Windy through the night and at 0630 obsv time.
11/2/2017 6:15 AM 0.00 0.0 M 0.0 M
11/3/2017 6:00 AM 0.00 0.0 M 0.0 M
11/4/2017 6:00 AM 0.00 0.0 M 0.0 M
11/5/2017 6:00 AM 0.00 0.0 M 0.0 M
11/6/2017 6:30 AM 0.00 0.0 M 0.0 M
11/7/2017 6:44 AM 0.11 0.8 0.05 1.0 0.04 Ice in bottom of gauge. Difficult to collect the ice layer on the ground when obtaining snow cores. Started as misty rain ~2130, not really worthy of drizzle status. Woke up to snow around 0400. Still snowing lightly with bigger flakes at 0644 obsv time.
11/8/2017 5:35 AM T 0.5 T 1.0 T Gauge content and melted core fields will be updated tonight 08nov17. Updated data in core field 22nov17.
11/9/2017 6:15 AM 0.00 0.0 M 0.0 M Frost this morning.
11/10/2017 6:28 AM 0.00 0.0 M 0.0 M Significant frost this morning.
11/11/2017 7:00 AM 0.00 0.0 M 0.0 M Frost
11/12/2017 7:00 AM 0.00 0.0 M 0.0 M
11/13/2017 6:16 AM 0.00 0.0 M 0.0 M
11/14/2017 6:00 AM 0.00 0.0 M 0.0 M
11/15/2017 6:00 AM 0.00 0.0 M 0.0 M
11/16/2017 6:00 AM 0.00 0.0 M 0.0 M
11/17/2017 6:00 AM 0.00 0.0 M 0.0 M
11/18/2017 5:30 AM T 0.0 M 0.0 M
11/19/2017 5:45 AM 0.00 0.0 M 0.0 M
11/20/2017 5:55 AM 0.00 0.0 M 0.0 M
11/21/2017 6:00 AM 0.00 0.0 M 0.0 M
11/22/2017 6:20 AM T 0.0 M 0.0 M Trace of rain during the day.
11/23/2017 7:00 AM 0.00 0.0 M 0.0 M
11/24/2017 6:10 AM 0.00 0.0 M 0.0 M
11/25/2017 6:57 AM 0.00 0.0 M 0.0 M Thin light frost on house rooftops.
11/26/2017 6:05 AM 0.00 0.0 M 0.0 M
11/27/2017 5:50 AM 0.00 0.0 M 0.0 M
11/28/2017 6:15 AM T 0.0 M 0.0 M Drizzle from 0430-0610 this morning. 36F at 0615 obsv time.
11/29/2017 5:55 AM 0.00 0.0 M 0.0 M
11/30/2017 6:00 AM 0.00 0.0 M 0.0 M
12/1/2017 6:00 AM 0.00 0.0 M 0.0 M
12/2/2017 6:00 AM 0.00 0.0 M 0.0 M
12/3/2017 6:00 AM 0.00 0.0 M 0.0 M
12/4/2017 6:15 AM 0.00 0.0 M 0.0 M
12/5/2017 5:57 AM 0.00 0.0 M 0.0 M
12/6/2017 6:00 AM 0.00 0.0 M 0.0 M
12/7/2017 6:40 AM 0.00 0.0 M 0.0 M Frost this morning on some grass (alot on nearby golf course), windshields, and roofs.
12/8/2017 5:42 AM 0.00 0.0 M 0.0 M
12/9/2017 6:52 AM 0.00 0.0 M 0.0 M
12/10/2017 6:00 AM 0.00 0.0 M 0.0 M
12/11/2017 7:00 AM 0.00 0.0 M 0.0 M
12/12/2017 6:40 AM 0.00 0.0 M 0.0 M
12/13/2017 5:55 AM 0.00 0.0 M 0.0 M
12/14/2017 5:54 AM 0.04 0.9 0.04 1.0 0.04 Snow began around midnight and ended about 0530 this morning. 28F, partly cloudy, and not snowing at 0554 obsv time.
12/15/2017 6:00 AM 0.00 0.0 M T T
12/16/2017 7:30 AM 0.00 0.0 M 0.0 M
12/17/2017 6:10 AM T 0.0 M 0.0 M Very fine mist in the air and 28F at 0610 obsv time. Not quite fog, really, but more like an ultra-fine drizzle. Can barely, but positively, feel the mist on skin and is barely perceptable on a car windshield. The gauge technically had moisture, noticeable only if you sweep a finger across the inside surface, and still it was barely wet. This is not frost nor dew, as it is felt in the air (not enough light to assist in seeing it).
12/18/2017 6:13 AM 0.00 0.0 M 0.0 M Frost on >50% of surfaces.
12/19/2017 5:45 AM 0.00 0.0 M 0.0 M
12/20/2017 5:30 AM 0.00 0.0 M 0.0 M
12/21/2017 6:11 AM 0.03 0.5 0.03 0.5 0.03 At 0355 this morning, moderately slushy snow pellets started to fall from a NNE trajectory in 15 mph winds. Temperature was 28F at 0355. Measured exactly 0.5" of snow at 0611, this time with less wet snow falling and still 28F.
12/22/2017 6:11 AM 0.09 0.5 0.12 0.7 0.03
12/23/2017 6:00 AM 0.00 0.0 M 0.7 0.03
12/24/2017 6:00 AM 0.04 1.1 0.04 2.5 0.23
12/25/2017 6:00 AM 0.00 0.0 M 2.0 0.12
12/26/2017 6:00 AM 0.00 0.0 M 2.0 0.13
12/27/2017 6:00 AM 0.00 0.0 M 1.0 0.09
12/28/2017 6:00 AM 0.00 0.0 M T T
12/29/2017 6:00 AM 0.00 0.0 M T T
12/30/2017 6:00 AM 0.00 0.0 M T T
12/31/2017 7:00 AM 0.00 0.0 M 0.0 M
1/1/2018 8:00 AM T T T 0.0 M About 10 flakes per hour all day and past midnight. No accumulation.
1/2/2018 7:00 AM 0.00 0.0 M 0.0 M
1/3/2018 5:30 AM 0.00 0.0 M 0.0 M
1/4/2018 7:00 AM 0.00 0.0 M 0.0 M
1/5/2018 5:30 AM 0.00 0.0 M 0.0 M
1/6/2018 6:00 AM 0.00 0.0 M 0.0 M
1/7/2018 6:30 AM 0.00 0.0 M 0.0 M
1/8/2018 6:53 AM 0.00 0.0 M 0.0 M
1/9/2018 6:05 AM 0.00 0.0 M 0.0 M
1/10/2018 6:11 AM 0.00 0.0 M 0.0 M
1/11/2018 6:00 AM 0.00 0.0 M 0.0 M
1/12/2018 6:04 AM 0.00 0.0 M 0.0 M 45F and ~20mph northwesterly gusty winds this morning at 0604 obsv time.
1/13/2018 5:40 AM 0.00 0.0 M 0.0 M Very dense fog at 0540 this morning.
1/14/2018 7:00 AM 0.00 0.0 M 0.0 M
1/15/2018 6:03 AM T T T T T Freezing rain, then freezing rain / snow mix, then only snow pellets
1/16/2018 6:42 AM 0.02 0.6 0.01 0.5 0.01 Precipitation began as freezing drizzle, then changed to freezing drizzle/snow mix, then finished as light snow. Thin ice glaze on windshields, roads, deck surfaces, etc.
1/17/2018 6:33 AM 0.00 0.0 M T T 50% of ground covered with ~0.25" of old snow (mostly in shady areas).
1/18/2018 6:00 AM 0.00 0.0 M 0.0 M
1/19/2018 6:00 AM 0.00 0.0 M 0.0 M
1/20/2018 6:00 AM 0.00 0.0 M 0.0 M
1/21/2018 5:42 AM 0.23 3.7 0.23 4.0 0.24 Snowing, windy, and drifting at 0542 observation time.
1/22/2018 6:45 AM 0.25 0.8 0.08 5.0 0.33 Not sure if I trust the gauge SWE or the new snowfall SWE (off the board). Blowing and drifting snow resulting in varying depths. Range of total snow depth is 3-7 inches.
1/23/2018 6:59 AM 0.00 0.0 M 5.0 0.61
1/24/2018 6:24 AM 0.00 0.0 M 4.0 0.64
1/25/2018 6:16 AM 0.00 0.0 M 3.5 0.63
1/26/2018 6:20 AM 0.00 0.0 M 3.0 0.64
1/27/2018 6:00 AM 0.00 0.0 M 2.0 M Total snow coverage ~75%, depth ranging 0-3.5".
1/28/2018 5:45 AM 0.00 0.0 M 1.5 M Total snow coverage ~75%, ranging 0-3" deep.
1/29/2018 6:33 AM 0.00 0.0 M 1.0 M Total snow coverage 60%, with depth range 0-2.5", averaging 1".
1/30/2018 6:00 AM 0.00 0.0 M T T
1/31/2018 6:20 AM 0.00 0.0 M T T
2/1/2018 6:20 AM T T T T T Snowing very lightly at 0620 obsv time.
2/2/2018 6:31 AM 0.00 0.0 M T T Dense fog this morning.
2/3/2018 6:00 AM 0.00 0.0 M 0.0 M Windy in the morning.
2/4/2018 6:26 AM T T T T T Dense fog, northerly wind, and light snow flurries at 0626 obsv time.
2/5/2018 7:10 AM T T T 0.0 M Trace of snow was done by 9:00am and melted entirely by 2:00pm.
2/6/2018 6:00 AM 0.00 0.0 M 0.0 M
2/7/2018 5:53 AM 0.00 0.0 M 0.0 M Dense fog again this morning.
2/8/2018 5:41 AM 0.00 0.0 M 0.0 M Corona surroundng the moon this morning. Optics report submitted.
2/9/2018 6:32 AM 0.00 0.0 M 0.0 M Dense fog first noticed at 0455, then steadily thickened substantially for the next hour or more. Very dense fog and a fine mist perceptible in the air at 0632 obsv time, but surfaces were still dry.
2/10/2018 7:15 AM 0.01 0.2 0.01 0.2 0.01 Snowing at 0715 obsv time.
2/11/2018 7:05 AM 0.14 2.3 0.14 1.9 0.13 2.0" new snow measured and not snowing at 1750. Resumed snowing with 0.3" of additional new, then done snowing by 2130.
2/12/2018 6:45 AM T T T 1.0 0.07 Just started snowing at 0640 - only a few very small flakes that were barely perceptible.
2/13/2018 6:10 AM T T T 1.0 0.08 Light snow in the morning only, with very little accumulation.
2/14/2018 6:00 AM 0.00 0.0 M 0.5 T
2/15/2018 6:00 AM 0.00 0.0 M 0.5 T
2/16/2018 7:00 AM T 0.1 T 0.5 T
2/17/2018 7:00 AM 0.00 0.0 M 0.0 M
2/18/2018 6:00 AM 0.00 0.0 M 0.0 M
2/19/2018 7:07 AM 0.01 1.1 0.01 1.0 T Snowing lightly at 0707 obsv time. Ice layer on snowboard, windshields, decks, but not on concrete. Unable to collect ice layer for SWE off of snowboard.
2/20/2018 6:11 AM 0.33 4.3 0.27 4.5 0.30 Snowed all day yesterday: 2.0" running accumulation at 1800, 2.5" at 2000, 4.5" at 0000. Not snowing, temp zero(F), mostly cloudy, and easterly wind at 5 mph at 0611 obsv time.
2/21/2018 6:22 AM 0.00 0.0 M 3.5 0.37 Zero degrees (F) and clear skies at 0622 obsv time.
2/22/2018 6:28 AM 0.00 0.0 M 3.5 0.40
2/27/2018 7:20 AM 0.00 0.0 M 1.5 1.00
2/28/2018 6:27 AM 0.00 0.0 M 1.0 0.08 Ground is 25% bare and 75% covered with patches old snow averaging 1" deep. Melted value of total snow is from 1.0" core.
3/1/2018 6:00 AM 0.00 0.0 M T T
3/2/2018 5:51 AM 0.00 0.0 M T T
3/3/2018 6:00 AM 0.00 0.0 M T T
3/4/2018 5:54 AM 0.00 0.0 M T T
3/5/2018 6:00 AM 0.00 0.0 M T T Very windy from the west all night and at 0600 obsv time.
3/6/2018 5:45 AM 0.00 0.0 M T T Very windy all day and through the night.
3/7/2018 5:40 AM 0.00 0.0 M 0.0 M
3/8/2018 6:00 AM 0.00 0.0 M 0.0 M
3/9/2018 5:57 AM 0.00 0.0 M 0.0 M
3/10/2018 6:00 AM 0.00 0.0 M 0.0 M
3/11/2018 5:55 AM 0.00 0.0 M 0.0 M
3/12/2018 7:00 AM 0.00 0.0 M 0.0 M
3/13/2018 6:00 AM 0.00 0.0 M 0.0 M
3/14/2018 7:00 AM 0.00 0.0 M 0.0 M
3/15/2018 7:05 AM 0.00 0.0 M 0.0 M
3/16/2018 6:10 AM 0.09 0.0 M 0.0 M Started 1948-2000 Hard and soft white pea size hail from West before rain, then mix 2000-2005, then only rain 2005-2100.
3/17/2018 6:02 AM 0.00 0.0 M 0.0 M
3/18/2018 7:00 AM 0.00 0.0 M 0.0 M
3/19/2018 6:23 AM 0.72 2.5 0.70 2.5 0.67 Started as hail/rain mix at 1705 accompanied by long thunder(s). Turned to graupel at 1725, then snow at 1735, lasting long into the night. Hail was pea-size; snowflakes were huge, up to 1.8" in diameter.
3/20/2018 6:33 AM 0.00 0.0 M 0.5 0.12
3/21/2018 6:00 AM 0.00 0.0 M T T
3/22/2018 6:00 AM 0.00 0.0 M T T
3/23/2018 6:00 AM 0.00 0.0 M 0.0 M
3/24/2018 6:00 AM 0.00 0.0 M 0.0 M
3/25/2018 6:00 AM 0.00 0.0 M 0.0 M
3/26/2018 5:30 AM 0.00 0.0 M 0.0 M Fog this morning (not terribly dense).
3/27/2018 5:37 AM 0.50 2.6 0.40 2.5 0.38 Exactly 0.50" in gauge. Started as rain at 1800, turned to snow at 1930, ending at 0430. Snow sticking mostly to grass, trees, and wooden decks. Not much snow sticking to roads, sidewalks, nor windshields.
3/28/2018 6:20 AM 0.00 0.0 M T T Frost this morning.
3/29/2018 6:35 AM 0.40 1.6 0.35 1.5 0.35 Exactly 0.40" in gauge. Started as rain at 1400, then rain snow mix at 1430, then only snow at 1450. Not much snow stuck to roads, concrete, but grass, wooden decks, and cars covered with a sticky glazy snow this morning. Accurate core from board was difficult to obtain due to 0.2" of ice on board under the 1.6" of snow.
3/30/2018 6:31 AM 0.03 T T T T Rain started at 1610, then turned to rain-snow mix at 1630, then all to all snow at 1705. Snow didn't begin to stick until 1815.
3/31/2018 6:32 AM 0.00 0.0 M T T
4/1/2018 6:28 AM T T T T T Snow began at 0600 this morning. Snowing very lightly and 25F at 0628 obsv time.
4/2/2018 6:00 AM 0.00 0.0 M T T
4/3/2018 5:55 AM 0.00 0.0 M 0.0 M Very windy overnight and early this morning.
4/4/2018 6:10 AM 0.00 0.0 M 0.0 M
4/5/2018 5:55 AM 0.00 0.0 M 0.0 M
4/6/2018 6:00 AM T 0.0 M 0.0 M
4/7/2018 7:33 AM 0.09 0.2 0.01 0.2 0.01 Snow didn't start accumulating until 3:30.
4/8/2018 6:00 AM 0.00 0.0 M 0.0 M
4/9/2018 6:00 AM T T T 0.0 M
4/10/2018 6:10 AM 0.03 T T 0.0 M
4/11/2018 6:18 AM 0.00 0.0 M 0.0 M
4/12/2018 5:47 AM 0.00 0.0 M 0.0 M
4/13/2018 6:29 AM 0.12 0.7 0.14 1.0 0.14 Snow on most surfaces. Roads and sidewalks just wet.
4/14/2018 7:00 AM 0.00 0.0 M 0.0 M Clear, cold, dry, and windy.
4/15/2018 6:00 AM 0.00 0.0 M 0.0 M
4/16/2018 5:33 AM 0.00 0.0 M 0.0 M
4/17/2018 6:00 AM 0.00 0.0 M 0.0 M
4/18/2018 6:15 AM 0.00 0.0 M 0.0 M Dry, but was very windy yesterday. A few uprooted trees, broken branches, blown down fences, and lost garbage cans scattered throughout the neighborhood.
4/19/2018 6:30 AM 0.00 0.0 M 0.0 M
4/20/2018 6:16 AM 0.00 0.0 M 0.0 M
4/21/2018 7:52 AM 0.51 1.9 0.26 2.0 0.26 Snowing lightly and 100% RH at 0752 obsv time. No accumulation on asphalt or concrete. Started as light rain at 1540. Snow started in early morning hours.
4/22/2018 6:17 AM 0.04 T T T T Frost this morning.
4/23/2018 6:00 AM 0.00 0.0 M 0.0 M
4/24/2018 7:12 AM 0.16 0.3 0.12 0.3 0.12 Snowing lightly and 33F at 0712 obsv time. No snow accumulation on asphalt or concrete - just wet.
4/25/2018 6:50 AM 0.08 T T 0.0 M Snowed most of yesterday, ending around 1500. All of it melted on contact on all surfaces.
4/26/2018 5:55 AM 0.00 0.0 M 0.0 M
4/27/2018 5:35 AM 0.00 0.0 M 0.0 M
4/28/2018 6:00 AM 0.00 0.0 M 0.0 M
4/29/2018 6:00 AM 0.00 0.0 M 0.0 M
4/30/2018 5:45 AM 0.00 0.0 M 0.0 M
5/1/2018 6:07 AM T 0.0 M 0.0 M Very light mist/drizzle in the air at 0607 obsv time felt on face and seen on wooden decks, car windshields, etc. Concrete and asphalt are not wet.
5/2/2018 5:56 AM 0.03 0.0 M 0.0 M Very light rain yesterday morning at 0607 osbv time, then again ~1230-1300, then again light rain this morning at 0556 obsv time. The majority of the 0.03" occurred during the 1230-1300 timeframe.
5/3/2018 6:05 AM 0.80 0.0 M 0.0 M Exactly 0.80" in the gauge at 0605 obsv time. Accumulated 0.24" by 1800 yesterday, then another 0.56" overnight. Raining moderately and 40F at 0605 obsv time.
5/4/2018 5:31 AM 0.86 0.0 M 0.0 M Rained all day until ~1600, then again at ~1900-2000, with pea-size hail 1915-1919. Clear and not raining at 0531 obsv time.
5/5/2018 6:00 AM 0.00 0.0 M 0.0 M
5/6/2018 6:00 AM 0.00 0.0 M 0.0 M
5/7/2018 6:00 AM 0.00 0.0 M 0.0 M
5/8/2018 5:30 AM 0.00 0.0 M 0.0 M
5/9/2018 5:25 AM 0.00 0.0 M 0.0 M
5/10/2018 6:00 AM 0.00 0.0 M 0.0 M
5/11/2018 5:55 AM 0.00 0.0 M 0.0 M
5/12/2018 6:23 AM 0.03 0.0 M 0.0 M Overcast/fog but not raining at 0623 obsv time.
5/13/2018 6:02 AM 0.12 0.0 M 0.0 M Dense fog at 0602 obsv time. Hard white pea-size hail fell 1902-1907. Accumulated 0.02" rain off-and-on throughout the day. Then another 0.10" of rain/hail overnight.
5/14/2018 5:35 AM 0.06 0.0 M 0.0 M
5/15/2018 5:41 AM 0.01 0.0 M 0.0 M
5/16/2018 6:10 AM 0.00 0.0 M 0.0 M
5/17/2018 6:15 AM 0.00 0.0 M 0.0 M
5/18/2018 5:44 AM 0.00 0.0 M 0.0 M
5/19/2018 7:00 AM 0.04 0.0 M 0.0 M
5/20/2018 7:47 AM 0.08 0.0 M 0.0 M Foggy/overcast and lightly misting at 0747 obsv time.
5/21/2018 5:45 AM 0.14 0.0 M 0.0 M Light fog at 0545 obsv time.
5/22/2018 5:52 AM 0.00 0.0 M 0.0 M
5/23/2018 6:01 AM 0.03 0.0 M 0.0 M
5/24/2018 6:00 AM 0.00 0.0 M 0.0 M
5/25/2018 6:12 AM 0.00 0.0 M 0.0 M
5/26/2018 6:00 AM 0.00 0.0 M 0.0 M
5/27/2018 6:00 AM 0.00 0.0 M 0.0 M
5/28/2018 6:00 AM 0.00 0.0 M 0.0 M
5/29/2018 6:16 AM 0.07 0.0 M 0.0 M
5/30/2018 6:20 AM 0.00 0.0 M 0.0 M
5/31/2018 6:06 AM 0.06 0.0 M 0.0 M
6/1/2018 5:33 AM 0.00 0.0 M 0.0 M
6/2/2018 6:03 AM 0.00 0.0 M 0.0 M
6/3/2018 6:05 AM 0.00 0.0 M 0.0 M
6/4/2018 5:47 AM 0.00 0.0 M 0.0 M
6/5/2018 6:00 AM 0.00 0.0 M 0.0 M
6/6/2018 6:00 AM 0.00 0.0 M 0.0 M
6/7/2018 5:54 AM T 0.0 M 0.0 M
6/8/2018 6:00 AM 0.00 0.0 M 0.0 M
6/9/2018 6:20 AM 0.00 0.0 M 0.0 M
6/10/2018 6:02 AM 0.00 0.0 M 0.0 M
6/11/2018 5:56 AM 0.00 0.0 M 0.0 M
6/12/2018 5:35 AM 0.00 0.0 M 0.0 M Hazy from wildfires in Colorado and in neighboring states.
6/13/2018 6:08 AM 0.00 0.0 M 0.0 M
6/14/2018 6:00 AM 0.00 0.0 M 0.0 M
6/15/2018 6:00 AM T 0.0 M 0.0 M
6/16/2018 6:00 AM 0.00 0.0 M 0.0 M
6/17/2018 6:00 AM T 0.0 M 0.0 M
6/18/2018 5:30 AM 0.27 0.0 M 0.0 M Rain on/off (mostly on) all day. Misting at 0530 obsv time.
6/19/2018 5:30 AM 0.39 0.0 M 0.0 M Cumulative rain total intervals: 0600-2015 0.04"; 2015-2154 0.21"; 2154-0530 0.39". Unmeasured rain episode 0100-0130. Drizzle all morning. Pea to ping-pong ball size white hard hail fell 2017-2033 (started with individual stones falling only every 30-40 seconds or so). More rain started after hail started. Lightning.
6/20/2018 5:25 AM 0.03 0.0 M 0.0 M 0.03" of rain 1816-1852.
6/21/2018 5:20 AM 0.00 0.0 M 0.0 M
6/22/2018 7:00 AM 0.00 0.0 M 0.0 M
6/23/2018 5:25 AM T 0.0 M 0.0 M A few large drops at approximately 1500-1530 .
6/24/2018 6:00 AM 0.00 0.0 M 0.0 M
6/25/2018 7:00 AM T 0.0 M 0.0 M
6/26/2018 7:00 AM 0.00 0.0 M 0.0 M
6/27/2018 7:00 AM 0.00 0.0 M 0.0 M
6/28/2018 7:00 AM 0.00 0.0 M 0.0 M
6/29/2018 7:00 AM 0.00 0.0 M 0.0 M
6/30/2018 7:00 AM 0.00 0.0 M 0.0 M
7/1/2018 5:40 AM T 0.0 M 0.0 M
7/2/2018 6:00 AM 0.00 0.0 M 0.0 M
7/3/2018 5:31 AM T 0.0 M 0.0 M
7/4/2018 7:00 AM 0.00 0.0 M 0.0 M
7/5/2018 5:50 AM T 0.0 M 0.0 M
7/6/2018 6:48 AM 0.02 0.0 M 0.0 M
7/7/2018 6:02 AM 0.00 0.0 M 0.0 M
7/8/2018 5:30 AM T 0.0 M 0.0 M
7/9/2018 7:00 AM 0.00 0.0 M 0.0 M
7/10/2018 6:00 AM 0.00 0.0 M 0.0 M
7/11/2018 5:55 AM 0.00 0.0 M 0.0 M
7/12/2018 6:10 AM 0.00 0.0 M 0.0 M
7/13/2018 6:11 AM T 0.0 M 0.0 M
7/14/2018 7:00 AM 0.00 0.0 M 0.0 M
7/15/2018 7:00 AM 0.00 0.0 M 0.0 M
7/16/2018 5:31 AM 0.28 0.0 M 0.0 M Light rain most of the day.
7/17/2018 6:00 AM 0.00 0.0 M 0.0 M
7/18/2018 6:41 AM 0.02 0.0 M 0.0 M Showers at unknown specific time between 1830-2130.
7/19/2018 7:00 AM 0.00 0.0 M 0.0 M
7/20/2018 7:00 AM 0.00 0.0 M 0.0 M
7/21/2018 7:00 AM 0.00 0.0 M 0.0 M
7/22/2018 6:00 AM T 0.0 M 0.0 M
7/23/2018 6:37 AM 0.25 0.0 M 0.0 M Exactly 0.25" obsverved in gauge. Rain fell 1448-1524, then again between 1730-2030.
7/24/2018 5:46 AM 0.15 0.0 M 0.0 M Exactly 0.15" total observed in the gauge. Rained on and off most of the day and into the night. Collected 0.14" by 2030, then another 0.01" through 2230.
7/25/2018 5:55 AM 0.00 0.0 M 0.0 M
7/26/2018 5:46 AM 0.12 0.0 M 0.0 M
7/27/2018 6:07 AM 0.72 0.0 M 0.0 M Thunder began at 2115. Rain started at 2123, heaviest started at 2153 with minor street flooding, then rain ended at 2215.
7/28/2018 6:43 AM 0.10 0.0 M 0.0 M Exactly 0.10" in gauge.
7/29/2018 7:26 AM 0.02 0.0 M 0.0 M Dense fog in which one can feel the droplets as precipitation.
7/30/2018 6:00 AM 0.00 0.0 M 0.0 M
7/31/2018 6:13 AM 0.00 0.0 M 0.0 M
8/1/2018 6:21 AM 0.00 0.0 M 0.0 M
8/2/2018 5:44 AM 0.00 0.0 M 0.0 M
8/3/2018 5:43 AM 0.00 0.0 M 0.0 M
8/4/2018 7:00 AM T 0.0 M 0.0 M
8/5/2018 5:35 AM T 0.0 M 0.0 M
8/6/2018 5:34 AM 0.07 0.0 M 0.0 M Most of the rain fell 1452-1503, and then intermittent traces into the early evening.
8/7/2018 6:28 AM 0.01 0.0 M 0.0 M Intermittent rain 1400-1600. Heavier shower sometime around 1515.
8/8/2018 6:00 AM 0.00 0.0 M 0.0 M
8/9/2018 6:00 AM 0.00 0.0 M 0.0 M
8/10/2018 5:52 AM 0.00 0.0 M 0.0 M
8/11/2018 6:00 AM 0.00 0.0 M 0.0 M
8/12/2018 6:00 AM 0.00 0.0 M 0.0 M
8/13/2018 6:00 AM 0.00 0.0 M 0.0 M
8/14/2018 5:38 AM 0.00 0.0 M 0.0 M
8/15/2018 5:54 AM 0.04 0.0 M 0.0 M
8/16/2018 7:00 AM 0.00 0.0 M 0.0 M
8/17/2018 6:10 AM 0.00 0.0 M 0.0 M
8/18/2018 6:14 AM 0.00 0.0 M 0.0 M
8/19/2018 5:56 AM 0.54 0.0 M 0.0 M Two separate very electrical storms. Submitted a Significant Weather report and a Thunder report. First rain interval 2029-2040. Second rain interval 2210-2258.
8/20/2018 6:00 AM T 0.0 M 0.0 M
8/21/2018 6:25 AM T 0.0 M 0.0 M
8/22/2018 6:15 AM T 0.0 M 0.0 M
8/23/2018 7:00 AM 0.00 0.0 M 0.0 M
8/24/2018 6:00 AM 0.00 0.0 M 0.0 M
8/25/2018 6:15 AM T 0.0 M 0.0 M
8/26/2018 6:00 AM 0.00 0.0 M 0.0 M
8/27/2018 6:00 AM T 0.0 M 0.0 M Heavy winds began at 0345 this morning, with a few raindrops 0512-0516. Winds generally subsided around 0600 obsv time with partly cloudy skies.
8/28/2018 5:55 AM 0.00 0.0 M 0.0 M
8/29/2018 6:00 AM 0.00 0.0 M 0.0 M
8/30/2018 6:00 AM 0.00 0.0 M 0.0 M
8/31/2018 5:19 AM T 0.0 M 0.0 M
9/1/2018 6:08 AM T 0.0 M 0.0 M A few sprinks observed 2117-2121.
9/2/2018 6:00 AM 0.00 0.0 M 0.0 M
9/3/2018 6:00 AM 0.00 0.0 M 0.0 M
9/4/2018 6:05 AM 0.00 0.0 M 0.0 M
9/5/2018 5:32 AM 0.67 0.0 M 0.0 M First distant thunder heard to my west at 2230 but no rain until 0141. Heavy duty lightning and thunder arrived at 0140. Rain started lightly then intensified around 0240. Not raining at 0532 obsv time.
9/6/2018 6:58 AM 0.15 0.0 M 0.0 M
9/7/2018 6:30 AM 0.01 0.0 M 0.0 M
9/8/2018 6:10 AM 0.00 0.0 M 0.0 M
9/9/2018 6:37 AM 0.00 0.0 M 0.0 M
9/10/2018 6:01 AM T 0.0 M 0.0 M A few raindrops fell at 1608.
9/11/2018 6:00 AM 0.00 0.0 M 0.0 M
9/12/2018 5:33 AM 0.00 0.0 M 0.0 M
9/13/2018 6:00 AM 0.00 0.0 M 0.0 M
9/14/2018 6:20 AM 0.00 0.0 M 0.0 M
9/15/2018 6:00 AM 0.00 0.0 M 0.0 M
9/16/2018 6:00 AM 0.00 0.0 M 0.0 M
9/17/2018 6:00 AM 0.00 0.0 M 0.0 M
9/18/2018 6:00 AM 0.00 0.0 M 0.0 M
9/19/2018 6:00 AM 0.00 0.0 M 0.0 M
9/20/2018 5:57 AM 0.23 0.0 M 0.0 M
9/21/2018 6:28 AM 0.00 0.0 M 0.0 M
9/22/2018 7:00 AM 0.00 0.0 M 0.0 M
9/23/2018 7:00 AM 0.00 0.0 M 0.0 M
9/24/2018 6:00 AM 0.00 0.0 M 0.0 M
9/25/2018 5:48 AM 0.00 0.0 M 0.0 M
9/26/2018 6:00 AM 0.00 0.0 M 0.0 M
9/27/2018 6:00 AM 0.00 0.0 M 0.0 M
9/28/2018 6:00 AM 0.00 0.0 M 0.0 M
9/29/2018 7:00 AM 0.00 0.0 M 0.0 M
9/30/2018 7:00 AM 0.00 0.0 M 0.0 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
3/15/2018 7:48 PM Hail melted less than or equal to 20 minutes of striking the ground. No pad in service. 1/4" Pea Size 1/4" Pea Size Rice Mixed|White Ice 17 1min no damage Continuous True Before rain Before smaller hail
3/18/2018 5:05 PM Hail melted a few minutes after impact, but graupel and snow with giant snowflakes (2" diameter) soon took over. 1/4" Pea Size 1/4" Pea Size Rice Soft|Clear Ice|White Ice 20 1min no damage Continuous False Same time as rain Same time as smaller hail vertical
5/3/2018 4:15 PM 1/4" Pea Size 1/4" Pea Size 1/4" Pea Size Hard|White Ice 4 1min no damage Continuous True After rain Same time as smaller hail
5/12/2018 7:02 PM 1/4" Pea Size 1/4" Pea Size Rice Hard|White Ice 5 1min no damage Continuous True After rain Same time as smaller hail
6/18/2018 8:17 PM Single hailstones fell (not in typical shower form). Only maybe 100 stones fell in total and each one could be heard striking throughout the neighborhood. Distance apart is more like many yards apart. Started as ping-pong ball and quarter size and finished with pea size. Photos available. 1 1/2" Ping Pong Ball Size 1" Quarter Size 1/4" Pea Size Hard|White Ice 21 1min car dents Intermittent True Before rain Before smaller hail 10-20 36 0.0