Station Overview Station Location
Station Number CO-JF-343 Latitude 39.7667
Station Name Wheat Ridge 0.9 WSW Longitude -105.1142
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 16 1.12 0.41 31 0.41 31 0.00 0 0 4 1 0.0 0 0
Nov 16 0.94 0.42 30 0.42 30 0.00 0 0 4 1 3.2 1 3
Dec 16 0.64 1.01 31 1.01 31 0.00 0 0 4 2 13.9 4 20
Jan 17 0.50 1.03 31 1.03 31 0.00 0 0 7 1 13.0 7 31
Feb 17 0.52 0.22 28 0.22 28 0.00 0 0 3 3 2.2 2 3
March 17 1.59 0.67 31 0.67 31 0.00 0 0 6 3 0.0 0 0
April 17 2.09 2.66 30 2.66 30 0.00 0 0 10 1 15.7 4 4
May 17 2.39 4.16 31 4.16 31 0.00 0 0 14 4 2.0 2 2
June 17 2.00 0.54 30 0.54 30 0.00 0 0 6 3 0.0 0 0
July 17 1.75 1.22 31 1.17 29 0.05 2 1 7 4 0.0 0 0
Aug 17 1.94 1.73 31 0.49 18 1.24 13 3 3 3 0.0 0 0
Sept 17 1.15 1.65 29 1.65 29 0.00 0 0 9 3 0.0 0 0
Water Year Totals: 16.63" 15.72" 364 days 14.43" 349 1.29" 15 days 4 77 days 29 days 50.0" 20 days 63 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 T
10/2/2016 0.00
10/3/2016 0.00
10/4/2016 0.00
10/5/2016 0.00
10/6/2016 0.27
10/7/2016 0.08
10/8/2016 0.00
10/9/2016 0.00
10/10/2016 0.00
10/11/2016 0.00
10/12/2016 0.05
10/13/2016 0.01
10/14/2016 0.00
10/15/2016 0.00
10/16/2016 0.00
10/17/2016 0.00
10/18/2016 0.00
10/19/2016 0.00
10/20/2016 0.00
10/21/2016 0.00
10/22/2016 0.00
10/23/2016 0.00
10/24/2016 0.00
10/25/2016 0.00
10/26/2016 0.00
10/27/2016 0.00
10/28/2016 0.00
10/29/2016 0.00
10/30/2016 0.00
10/31/2016 0.00
11/1/2016 0.00
11/2/2016 0.01
11/3/2016 0.00
11/4/2016 0.00
11/5/2016 0.00
11/6/2016 0.00
11/7/2016 0.00
11/8/2016 0.00
11/9/2016 0.00
11/10/2016 0.00
11/11/2016 0.00
11/12/2016 0.00
11/13/2016 0.00
11/14/2016 0.00
11/15/2016 0.00
11/16/2016 0.00
11/17/2016 0.00
11/18/2016 0.24
11/19/2016 0.00
11/20/2016 0.00
11/21/2016 0.00
11/22/2016 0.01
11/23/2016 0.16
11/24/2016 0.00
11/25/2016 0.00
11/26/2016 0.00
11/27/2016 0.00
11/28/2016 T
11/29/2016 0.00
11/30/2016 0.00
12/1/2016 0.00
12/2/2016 0.00
12/3/2016 T
12/4/2016 0.00
12/5/2016 0.00
12/6/2016 0.00
12/7/2016 0.12
12/8/2016 0.02
12/9/2016 0.00
12/10/2016 0.00
12/11/2016 0.09
12/12/2016 0.00
12/13/2016 0.00
12/14/2016 0.00
12/15/2016 T
12/16/2016 0.00
12/17/2016 0.78
12/18/2016 0.00
12/19/2016 0.00
12/20/2016 0.00
12/21/2016 0.00
12/22/2016 0.00
12/23/2016 0.00
12/24/2016 0.00
12/25/2016 0.00
12/26/2016 0.00
12/27/2016 0.00
12/28/2016 0.00
12/29/2016 0.00
12/30/2016 0.00
12/31/2016 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.00
1/2/2017 0.00
1/3/2017 T
1/4/2017 0.01
1/5/2017 0.50
1/6/2017 0.08
1/7/2017 0.00
1/8/2017 0.00
1/9/2017 0.00
1/10/2017 0.00
1/11/2017 0.00
1/12/2017 0.00
1/13/2017 0.01
1/14/2017 0.00
1/15/2017 0.00
1/16/2017 0.32
1/17/2017 0.10
1/18/2017 0.00
1/19/2017 0.00
1/20/2017 0.00
1/21/2017 0.00
1/22/2017 0.00
1/23/2017 0.00
1/24/2017 0.00
1/25/2017 0.01
1/26/2017 0.00
1/27/2017 0.00
1/28/2017 0.00
1/29/2017 0.00
1/30/2017 0.00
1/31/2017 0.00
2/1/2017 0.00
2/2/2017 0.04
2/3/2017 T
2/4/2017 0.00
2/5/2017 0.00
2/6/2017 0.00
2/7/2017 0.00
2/8/2017 0.00
2/9/2017 0.00
2/10/2017 0.00
2/11/2017 0.00
2/12/2017 T
2/13/2017 0.00
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.00
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 0.00
2/20/2017 T
2/21/2017 0.00
2/22/2017 0.00
2/23/2017 0.00
2/24/2017 0.17
2/25/2017 0.01
2/26/2017 0.00
2/27/2017 0.00
2/28/2017 0.00
3/1/2017 T
3/2/2017 0.00
3/3/2017 0.00
3/4/2017 0.00
3/5/2017 0.00
3/6/2017 0.00
3/7/2017 0.00
3/8/2017 0.00
3/9/2017 0.00
3/10/2017 0.00
3/11/2017 0.00
3/12/2017 0.01
3/13/2017 0.00
3/14/2017 0.00
3/15/2017 0.00
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.00
3/19/2017 0.00
3/20/2017 0.00
3/21/2017 0.00
3/22/2017 0.00
3/23/2017 0.00
3/24/2017 0.29
3/25/2017 T
3/26/2017 0.00
3/27/2017 0.04
3/28/2017 0.02
3/29/2017 0.29
3/30/2017 T
3/31/2017 0.02
Day of YearDaily PrcpMultiday Prcp
4/1/2017 0.34
4/2/2017 0.00
4/3/2017 0.07
4/4/2017 0.63
4/5/2017 0.46
4/6/2017 0.00
4/7/2017 0.00
4/8/2017 0.00
4/9/2017 0.00
4/10/2017 0.00
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 0.00
4/14/2017 0.00
4/15/2017 0.00
4/16/2017 0.00
4/17/2017 0.00
4/18/2017 0.00
4/19/2017 0.00
4/20/2017 0.00
4/21/2017 0.20
4/22/2017 0.03
4/23/2017 T
4/24/2017 0.00
4/25/2017 0.00
4/26/2017 0.15
4/27/2017 0.00
4/28/2017 0.02
4/29/2017 0.56
4/30/2017 0.20
5/1/2017 0.00
5/2/2017 0.00
5/3/2017 0.19
5/4/2017 0.08
5/5/2017 0.00
5/6/2017 0.00
5/7/2017 0.00
5/8/2017 0.03
5/9/2017 0.41
5/10/2017 T
5/11/2017 0.33
5/12/2017 0.00
5/13/2017 T
5/14/2017 0.00
5/15/2017 0.00
5/16/2017 0.00
5/17/2017 0.01
5/18/2017 1.00
5/19/2017 0.90
5/20/2017 T
5/21/2017 0.00
5/22/2017 0.17
5/23/2017 0.22
5/24/2017 0.00
5/25/2017 0.00
5/26/2017 0.27
5/27/2017 0.01
5/28/2017 0.53
5/29/2017 0.00
5/30/2017 T
5/31/2017 0.01
6/1/2017 0.00
6/2/2017 T
6/3/2017 0.05
6/4/2017 0.00
6/5/2017 0.00
6/6/2017 T
6/7/2017 0.00
6/8/2017 0.01
6/9/2017 T
6/10/2017 0.00
6/11/2017 0.00
6/12/2017 0.00
6/13/2017 0.00
6/14/2017 0.00
6/15/2017 0.00
6/16/2017 0.00
6/17/2017 0.00
6/18/2017 0.01
6/19/2017 0.00
6/20/2017 0.00
6/21/2017 0.00
6/22/2017 0.00
6/23/2017 0.12
6/24/2017 0.02
6/25/2017 0.00
6/26/2017 0.00
6/27/2017 0.00
6/28/2017 0.00
6/29/2017 0.00
6/30/2017 0.33
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.00
7/2/2017 0.00
7/3/2017 0.00
7/4/2017 0.00
7/5/2017 0.00
7/6/2017 0.00
7/7/2017 0.00
7/8/2017 0.00
7/9/2017 0.00
7/10/2017 0.00
7/11/2017 T
7/12/2017 T
7/13/2017 0.02
7/14/2017 0.00
7/15/2017 0.23
7/16/2017 0.03
7/17/2017 0.00
7/18/2017 0.00
7/19/2017 T
7/20/2017 0.00
7/21/2017 T
7/22/2017 0.02
7/23/2017 0.00
7/24/2017 0.00
7/25/2017 0.00
7/26/2017 0.02
7/27/2017 0.34
7/28/2017 0.00
7/29/2017 0.51
7/30/2017 **
7/31/2017 0.05
8/1/2017 0.00
8/2/2017 0.00
8/3/2017 0.35
8/4/2017 0.02
8/5/2017 T
8/6/2017 **
8/7/2017 **
8/8/2017 0.81
8/9/2017 **
8/10/2017 **
8/11/2017 0.36
8/12/2017 T
8/13/2017 0.12
8/14/2017 **
8/15/2017 **
8/16/2017 **
8/17/2017 **
8/18/2017 **
8/19/2017 **
8/20/2017 0.07
8/21/2017 0.00
8/22/2017 0.00
8/23/2017 0.00
8/24/2017 0.00
8/25/2017 0.00
8/26/2017 0.00
8/27/2017 T
8/28/2017 0.00
8/29/2017 0.00
8/30/2017 0.00
8/31/2017 0.00
9/1/2017 T
9/2/2017 0.00
9/3/2017 0.00
9/4/2017 0.00
9/5/2017 0.00
9/6/2017 0.00
9/7/2017 0.00
9/8/2017 0.00
9/9/2017 0.00
9/10/2017 0.00
9/11/2017 0.00
9/12/2017
9/13/2017 0.00
9/14/2017 0.05
9/15/2017 0.00
9/16/2017 T
9/17/2017 0.00
9/18/2017 0.11
9/19/2017 0.00
9/20/2017 0.00
9/21/2017 0.00
9/22/2017 0.00
9/23/2017 0.03
9/24/2017 0.72
9/25/2017 0.18
9/26/2017 0.02
9/27/2017 0.05
9/28/2017 0.45
9/29/2017 0.04
9/30/2017 T



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 7:00 AM T M M M M
10/2/2016 7:00 AM 0.00 0.0 M M M
10/3/2016 7:00 AM 0.00 0.0 M M M
10/4/2016 7:00 AM 0.00 0.0 M M M
10/5/2016 7:00 AM 0.00 0.0 M M M
10/6/2016 7:00 AM 0.27 M M M M
10/7/2016 7:00 AM 0.08 M M M M I noted 0.07" of rain in the gauge from the tail end of yesterday morning's showers, when I checked it around 5 p.m., and then another 0.01" was added from a light sprinkle that evening. And this morning was our first (very) light frost of any kind of the season; just a touch of frost on the lawn only in more exposed unsheltered areas, and a partial skim of ice on the water on our birdbath.
10/8/2016 7:00 AM 0.00 0.0 M M M
10/9/2016 7:00 AM 0.00 0.0 M M M
10/10/2016 7:00 AM 0.00 0.0 M M M
10/11/2016 7:00 AM 0.00 0.0 M M M
10/12/2016 7:00 AM 0.05 M M M M
10/13/2016 7:00 AM 0.01 M M M M
10/14/2016 7:00 AM 0.00 0.0 M M M
10/15/2016 7:00 AM 0.00 0.0 M M M
10/16/2016 7:00 AM 0.00 0.0 M M M
10/17/2016 7:00 AM 0.00 0.0 M M M
10/18/2016 7:00 AM 0.00 0.0 M M M
10/19/2016 7:00 AM 0.00 0.0 M M M
10/20/2016 7:00 AM 0.00 0.0 M M M
10/21/2016 7:00 AM 0.00 0.0 M M M
10/22/2016 7:00 AM 0.00 0.0 M M M
10/23/2016 7:00 AM 0.00 0.0 M M M
10/24/2016 7:00 AM 0.00 0.0 M M M
10/25/2016 7:00 AM 0.00 0.0 M M M
10/26/2016 7:00 AM 0.00 0.0 M M M
10/27/2016 7:00 AM 0.00 0.0 M M M
10/28/2016 7:00 AM 0.00 0.0 M M M
10/29/2016 7:00 AM 0.00 0.0 M M M
10/30/2016 7:00 AM 0.00 0.0 M M M
10/31/2016 7:00 AM 0.00 0.0 M M M
11/1/2016 7:00 AM 0.00 0.0 M M M
11/2/2016 7:30 AM 0.01 M M M M
11/3/2016 7:00 AM 0.00 0.0 M M M
11/4/2016 7:00 AM 0.00 0.0 M M M
11/5/2016 7:00 AM 0.00 0.0 M M M
11/6/2016 7:00 AM 0.00 0.0 M M M
11/7/2016 7:00 AM 0.00 0.0 M M M
11/8/2016 7:00 AM 0.00 0.0 M M M
11/9/2016 7:00 AM 0.00 0.0 M M M
11/10/2016 7:00 AM 0.00 0.0 M M M
11/11/2016 7:00 AM 0.00 0.0 M M M
11/12/2016 7:00 AM 0.00 0.0 M M M
11/13/2016 7:00 AM 0.00 0.0 M M M
11/14/2016 7:00 AM 0.00 0.0 M M M
11/15/2016 7:00 AM 0.00 0.0 M M M
11/16/2016 7:00 AM 0.00 0.0 M M M
11/17/2016 7:00 AM 0.00 0.0 M M M
11/18/2016 6:00 AM 0.24 3.2 0.26 3.0 0.26 Precipitation fell as snow melting on contact at first, then accumulating snow. On the board surface measured, loose snow on top amounted to 0.23" of water, and an icy crust layer at the base, 0.03", for a total of 0.26" precipitation.
11/19/2016 7:00 AM 0.00 0.0 M 2.0 0.16
11/20/2016 7:00 AM 0.00 0.0 M 2.0 0.19 Comparison of my yesterday's vs. today's snow depth and SWE measurements shows the variation & scatter in snow cover and measurement; 2.0/0.16 yesterday, 2.0/0.19 today, though there "must" have been some melting and settling. Our sheltered yard, slight north slope, and low sun angle, mean limited daily melting or sublimation at this time of year, unless it's really warm.
11/21/2016 7:00 AM 0.00 0.0 M T M
11/22/2016 7:00 AM 0.01 0.0 M 0.0 M Just a little rain, no snow at all yet today.
11/23/2016 7:00 AM 0.16 T M 0.0 M Precip. began as rain, fell as snow for a while, but all melting as it fell, then back to rain.
11/24/2016 7:00 AM 0.00 0.0 M 0.0 M
11/25/2016 7:00 AM 0.00 0.0 M 0.0 M
11/26/2016 7:00 AM 0.00 0.0 M 0.0 M
11/27/2016 7:00 AM 0.00 0.0 M M M
11/28/2016 7:00 AM T 0.0 M 0.0 M A trace of rain fell, between about 7:30 to 8:30 a.m.; just barely enough to dampen the ground.
11/29/2016 7:00 AM 0.00 0.0 M 0.0 M
11/30/2016 7:00 AM 0.00 0.0 M 0.0 M
12/1/2016 7:00 AM 0.00 0.0 M 0.0 M
12/2/2016 7:00 AM 0.00 0.0 M 0.0 M
12/3/2016 7:00 AM T T M 0.0 M Just a trace of very fine snow fell, but nothing accumulated on the ground.
12/4/2016 7:00 AM 0.00 0.0 M 0.0 M
12/5/2016 7:00 AM 0.00 0.0 M 0.0 M
12/6/2016 7:00 AM 0.00 0.0 M 0.0 M
12/7/2016 7:30 AM 0.12 2.0 0.12 2.0 0.12
12/8/2016 7:00 AM 0.02 0.2 0.02 1.5 0.11
12/9/2016 7:00 AM 0.00 0.0 M 1.5 M
12/10/2016 7:00 AM 0.00 0.0 M 1.0 0.10 Snow remaining on the ground is variable; I took two core measurements, both about 1 inch depth, one showed 0.13" water, the other, 0.07"; reporting the average as 0.10".
12/11/2016 7:20 AM 0.09 0.7 0.09 0.5 0.09 Wet snow on the ground, it's just above freezing now, and it should melt quickly as it warms up a bit. Not snowing any more. The snow on the ground showed the same water content as in the gauge, 0.09 inches.
12/12/2016 7:00 AM 0.00 0.0 M T M Just a trace of yesterday's snow remains on the ground.
12/13/2016 7:00 AM 0.00 0.0 M T M Still a trace of snow left, patchy all over our back yard, from Saturday morning's light snowfall.
12/14/2016 7:00 AM 0.00 0.0 M T M
12/15/2016 7:00 AM T T T T M A trace of light snow fell during the first few hours of the observation period (the morning of the 14th). A trace (scattered patchy snow on the grass, ranging from none to about a half inch) still remains on the ground from the snow that fell back on the 10th.
12/16/2016 7:00 AM 0.00 0.0 M 0.0 M With one or two warm days, all the remaining snow on the ground has finally melted.
12/17/2016 7:30 AM 0.78 11.0 0.83 11.0 0.83 The water content of snow in the rain gauge measured 0.78", but the gauge was full with snow mounded on the top. I'm not sure if this is the most accurate record of how much snow fell. Perhaps the water content measured from the snow core, 0.83", is more accurate; but I'll still report the amount from the gauge here, 0.78".
12/18/2016 7:00 AM 0.00 0.0 M 8.5 M Total snow on the ground from yesterday's snowfall ranges from about 8 to 9 inches. I'm sure none has melted, it has just compacted a bit.
12/19/2016 7:00 AM 0.00 0.0 M 8.0 0.92
12/20/2016 7:00 AM 0.00 0.0 M 7.0 0.92 In spite of the warm day yesterday, the snow on the ground has compacted a bit more and become wetter, but my snow core still shows about the same total water content in it. The measuring area in my back yard is a sheltered area on a slightly northfacing slope, so snow is always slow to melt there at this time of year.
12/21/2016 7:00 AM 0.00 0.0 M 4.0 0.78
12/22/2016 7:00 AM 0.00 0.0 M 4.0 0.76 My back yard measurement area still shows about the same amount of remaining snow, and contained water, as yesterday.
12/23/2016 7:00 AM 0.00 0.0 M 4.0 0.69
12/24/2016 7:00 AM 0.00 0.0 M 4.0 0.68 Total old snow on the ground still ranges from about 3 to 4.5 inches, I'll still call 4.0 inches as the best average.
12/25/2016 7:00 AM 0.00 0.0 M 4.0 0.68 Old snow on the ground still ranges from about 3 to 4.5 inches, and my estimate of the average is still about 4 inches, and the water content still hasn't changed measurably.
12/26/2016 7:00 AM 0.00 0.0 M 3.5 0.57 Total old snow on the ground still has not changed very much; ranges from 3.0 to 4.0 inches.
12/27/2016 7:00 AM 0.00 0.0 M 3.5 0.64
12/28/2016 7:00 AM 0.00 0.0 M 3.5 0.61 Old snow on ground still ranges from 3 to 4 inches depth.
12/29/2016 7:00 AM 0.00 0.0 M 3.0 0.69 Total snow on ground ranges from 2 to 4 inches.
12/30/2016 7:00 AM 0.00 0.0 M 3.0 0.62 Total snow on ground still ranges from 2 to 4 inches.
12/31/2016 7:00 AM 0.00 0.0 M 3.0 0.67 There is still considerable snow on the ground here, it ranges from about 2 to 3.5 inches; because we originally received more snow in this area (11 inches back on 12/17), and the area has slight north slope and is partly shaded on the south by trees. 3.0" is still my best estimate of the average depth. I took 3 snow cores this morning: 3.5" depth = 0.66" SWE, 2.5" = 0.68", 2.0" = 0.57". I'm reporting 0.67" as the average/typical SWE. All the observations show that the snow under these conditions melts a bit on the surface and compacts, but the melt water mostly just soaks down into the underlying snow and is not lost.
1/1/2017 7:00 AM 0.00 0.0 M 2.5 0.63 Total snow ranges from 2 to 3.5 inches; I'll call 2.5 inches the average amount.
1/2/2017 7:00 AM 0.00 0.0 M 2.5 0.63 Total snow still ranges from about 2 to 3.5 inches on ground. In our observation area around our gauge, which is slightly shaded/sheltered and slightly north-facing; some areas in the neighborhood that are more open and sunlit, have zero snow left.
1/3/2017 7:00 AM T T M 2.5 M Total snow on the ground ranges from 2 to 3.5 inches.
1/4/2017 7:00 AM 0.01 0.3 0.01 3.0 0.59 A new accumulation of very light, fluffy snow. Total snow on the ground ranges from about 2 to 4 inches.
1/5/2017 7:45 AM 0.50 7.0 0.50 10.0 1.32 SWE in gauge is 0.50", SWE of core of new snow also measures 0.50". Total snow includes the 3-4" base of old snow already on the ground beneath new snowfall.
1/6/2017 7:00 AM 0.08 1.0 0.10 9.0 1.42
1/7/2017 7:00 AM 0.00 0.0 M 8.0 M
1/8/2017 7:00 AM 0.00 0.0 M 8.0 1.34 Total snow depth ranged from about 6 to 9 inches; my best estimate of the representative average is 8 inches.
1/9/2017 7:00 AM 0.00 0.0 M 6.0 1.32 Total snow on ground ranges from 4 to 6.5 inches; estimate of average depth is 6.0 inches.
1/10/2017 7:00 AM 0.00 0.0 M 2.0 0.74 Total (old) snow on the ground ranges from 0 to 3.5 inches; best estimate of average is 2 inches.
1/11/2017 7:00 AM 0.00 0.0 M 1.5 0.54 Total old snow remaining on ground ranges from 0 to 3 inches.
1/12/2017 7:00 AM 0.00 0.0 M 1.0 M Total snow on ground ranges from about 3 to 0 inches; nearly 1/2 the area is now snow-free. 1 inch is my best estimate of the average.
1/13/2017 7:00 AM 0.01 0.2 0.01 1.0 0.24 Total snow on ground ranges from 0 to 3 inches; about half of the area is snow-free. I'll report 1.0" as my best estimate of the overall average snow cover.
1/14/2017 7:00 AM 0.00 0.0 M 1.0 0.33 Hard to accurately estimate average total snow depth; about half of the area is bare of snow, half still has between 1 to 3 inches remaining (but most of which is 2 to 3 inches). I will give 1 inch as my best estimate of the overall average. I took a snow core where the depth is 2 inches, = 0.66" water content, then dividing that by 2 to correspond to a 1 inch depth, I'll report 0.33" as the melted value.
1/15/2017 7:00 AM 0.00 0.0 M 0.5 0.16 Total (old) snow on ground ranges from zero (about 2/3 of my measurement area) to 1-3 inches (about 1/3 of the area). Again, thanks to the time of year and the north-sloping and south-shaded aspect of my site, snow is slow to melt. Prorating the water content from a core taken where the snow depth is 2.5", 0.79"H2O/2.5"snow = 0.32"H2O/inch snow, I'm reporting 0.16" water content for an averaged snow depth of 0.5".
1/16/2017 7:40 AM 0.32 3.5 0.30 4.0 0.43 If I had gotten out to measure at 7:00, accumulation would have been a bit less (3.0" perhaps). As per my snow depth measurements yesterday, variable old snow depth on ground (0 to 3 inches) makes an avg. total snow depth difficult. Measured a core where total depth is 5 inches, with 3.5" new snow atop 1.5" old snow, = 0.69" water content. Adjusting this to my estimated overall average from yesterday of 0.5" old snow depth, I'll report 4.0" total depth, 0.43" total water content.
1/17/2017 7:00 AM 0.10 0.8 0.11 4.5 0.45 Total snow on ground ranges from 4.0" where ground had previously been bare of snow before latest snowfall, to 5.5" where some snow had still remained from earlier snowfalls.
1/18/2017 7:00 AM 0.00 0.0 M 4.0 M Total snow depth ranges from about 3.5 to 5 inches.
1/19/2017 7:00 AM 0.00 0.0 M 4.0 0.61
1/20/2017 7:00 AM 0.00 0.0 M 3.5 0.53 In spite of warm weather yesterday, most of the snow still remains. Snow depth ranges from 3", 0.39"SWE (about 2/3 of the area, which had been bare before last snowfall) to 5"(0.95"SWE) (had still been snow covered at time of last snowfall). My best weighted average estimate from the two measurements is 3.5" avg. depth, 0.53" SWE.
1/21/2017 7:00 AM 0.00 0.0 M 3.0 M Total snow depth ranges from about 2 to 4 inches.
1/22/2017 7:00 AM 0.00 0.0 M 3.0 0.46 Total snow on ground ranges from 2 to 4 inches. Took 3 snow cores: 4.0"=0.67"SWE, 2.5"=0.38"SWE, 2.0"=0.33" SWE. Avg of 3 = 2.8" (report as 3.0"), 0.46" SWE.
1/23/2017 7:00 AM 0.00 0.0 M 3.0 0.61 Total snow on ground still ranges from 2 to 4 inches, average estimate is 3 inches.
1/24/2017 7:00 AM 0.00 0.0 M 2.5 M Total (all old) snow on the ground ranges from about 1.5 to 3.5 inches depth.
1/25/2017 7:00 AM 0.01 0.2 M 2.5 0.55 Total snow on ground ranges from about 1" to 4".
1/26/2017 7:00 AM 0.00 0.0 M 2.5 M Total snow on ground hasn't changed noticably since yesterday, still ranges from about 1 to 4 inches.
1/27/2017 7:00 AM 0.00 0.0 M 2.5 M Total snow depth still ranges from 1 to 4 inches. It has remained cold.
1/28/2017 7:00 AM 0.00 0.0 M 2.5 0.56 Total snow still ranges from about 1 to 4 inches.
1/29/2017 7:00 AM 0.00 0.0 M 2.0 0.44 Total snow remaining on ground ranges from zero to 2 to 4 inches; snow cores, 0.97" SWE at 4" depth, 0.36" at 2" depth. Use depth average as equal parts 0, 2", 4" = 2", SWE avg. of 0, .36, .97 = 0.44".
1/30/2017 7:00 AM 0.00 0.0 M 2.0 0.48 Total snow ranges from 0 to 4 inches.
1/31/2017 7:00 AM 0.00 0.0 M 1.0 M Remaining snow depth ranges from none to trace (about half or 2/3 of the area) to 2-3 inches (about 1/3 of the area). Best average estimate, 1 inch.
2/1/2017 7:00 AM 0.00 0.0 M T M About 2/3 or 3/4 of the area is now snow-free. 1/4 still has between about 1 to 3 inches of snow; maybe I could estimate a spread-out average as still 0.5 inch, but, I'll just call it Trace now.
2/2/2017 7:00 AM 0.04 T 0.03 T M Precip. mostly fell as freezing rain and freezing fog, maybe a little graupel. Accumulated as a layer of ice, inside the gauge and elsewhere. Scraped off the ice from my smooth (glass table top, not board) surface that I use for my snow measurement, SWE was 0.03"; ice layer was probably about 1 mm thick, I'll report it as "Trace". Some areas at my measuring site still have 1 to 3 inches of old, now icy snow remaining, but most ground is bare.
2/3/2017 7:00 AM T T T T M
2/4/2017 7:00 AM 0.00 0.0 M M M
2/5/2017 7:00 AM 0.00 0.0 M M M
2/6/2017 7:00 AM 0.00 0.0 M M M
2/7/2017 7:00 AM 0.00 0.0 M M M
2/8/2017 7:00 AM 0.00 0.0 M M M
2/9/2017 7:00 AM 0.00 0.0 M M M
2/10/2017 7:00 AM 0.00 0.0 M M M
2/11/2017 7:00 AM 0.00 0.0 M M M
2/12/2017 7:00 AM T 0.0 M M M
2/13/2017 7:00 AM 0.00 0.0 M M M
2/14/2017 7:00 AM 0.00 0.0 M M M
2/15/2017 7:00 AM 0.00 0.0 M 0.0 M
2/16/2017 7:00 AM 0.00 0.0 M 0.0 M
2/17/2017 7:00 AM 0.00 0.0 M 0.0 M
2/18/2017 7:00 AM 0.00 0.0 M 0.0 M
2/19/2017 7:00 AM 0.00 0.0 M 0.0 M
2/20/2017 7:00 AM T 0.0 M 0.0 M
2/21/2017 7:00 AM 0.00 0.0 M 0.0 M
2/22/2017 7:00 AM 0.00 0.0 M 0.0 M
2/23/2017 7:00 AM 0.00 0.0 M 0.0 M
2/24/2017 7:00 AM 0.17 2.0 0.22 2.0 0.22 Precip. first fell as intermittent snow that melted off and on as it fell, then continued as snow. Accumulation was a layer of crusty refrozen ice at the base, topped by loose snow.
2/25/2017 7:00 AM 0.01 0.2 0.10 1.5 0.10
2/26/2017 7:00 AM 0.00 0.0 M 0.5 M Depth of old snow remaining on the ground ranges from 1 inch (about 2/3 of the area) to none (about 1/3). I'll call the average 0.5 inch.
2/27/2017 7:00 AM 0.00 0.0 0.00 T M Maybe 1/3 of the area still has about 1/2 to 1 inch of snow remaining, rest of area is bare. I'll report the overall snow on the ground as Trace.
2/28/2017 7:00 AM 0.00 0.0 M 0.0 M
3/1/2017 7:00 AM T T M 0.0 M Just a few minutes of light snow flurry, around 4 p.m. Nothing really accumulated on the ground. Don't know if I should report this as Trace new snow accumulation, as I have, or 0.0!
3/2/2017 7:00 AM 0.00 0.0 M 0.0 M
3/3/2017 7:00 AM 0.00 0.0 M 0.0 M
3/4/2017 7:00 AM 0.00 0.0 M 0.0 M
3/5/2017 7:00 AM 0.00 0.0 M 0.0 M
3/6/2017 7:00 AM 0.00 0.0 M 0.0 M
3/7/2017 7:00 AM 0.00 0.0 M 0.0 M
3/8/2017 7:00 AM 0.00 0.0 M 0.0 M
3/9/2017 7:00 AM 0.00 0.0 M 0.0 M
3/10/2017 7:00 AM 0.00 0.0 M 0.0 M
3/11/2017 7:00 AM 0.00 0.0 M 0.0 M
3/12/2017 7:00 AM 0.01 0.0 M 0.0 M Light sprinkles, from about 7 to 9:30 a.m. on the 11th.
3/13/2017 7:00 AM 0.00 0.0 M 0.0 M
3/14/2017 7:00 AM 0.00 0.0 M 0.0 M
3/15/2017 7:00 AM 0.00 0.0 M 0.0 M
3/16/2017 7:00 AM 0.00 0.0 M M M
3/17/2017 7:00 AM 0.00 0.0 M M M
3/18/2017 7:00 AM 0.00 0.0 M M M
3/19/2017 7:00 AM 0.00 0.0 M M M
3/20/2017 7:00 AM 0.00 0.0 M M M
3/21/2017 7:00 AM 0.00 0.0 M M M
3/22/2017 7:00 AM 0.00 0.0 M M M
3/23/2017 7:00 AM 0.00 0.0 M M M
3/24/2017 7:00 AM 0.29 0.0 M 0.0 M No snow here, just rain.
3/25/2017 7:00 AM T 0.0 M 0.0 M
3/26/2017 7:00 AM 0.00 0.0 M M M
3/27/2017 7:00 AM 0.04 0.0 M 0.0 M
3/28/2017 7:00 AM 0.02 0.0 M 0.0 M
3/29/2017 7:00 AM 0.29 0.0 M 0.0 M No snow here, all rain.
3/30/2017 7:00 AM T 0.0 M 0.0 M
3/31/2017 7:00 AM 0.02 0.0 M 0.0 M
4/1/2017 7:00 AM 0.34 0.0 M 0.0 M There was a trace of snow (never saw any coming down, pre-dawn), only left on some surfaces (roof, plastic bins), nothing on the ground. Should I call this 0 snow, or trace?
4/2/2017 7:00 AM 0.00 0.0 M 0.0 M
4/3/2017 7:00 AM 0.07 0.0 M 0.0 M
4/4/2017 7:00 AM 0.63 5.5 0.58 5.5 0.58 Precip. fell first as 0.02 in. rain (measured in gauge at 3 a.m.), then the rest as snow. On pavement surfaces, the accumulation was as one or a few inches of very heavy wet snow; on a snow board surface on a grassy lawn, I measured 5.5 inches snow accumulation.
4/5/2017 7:00 AM 0.46 2.5 0.24 5.0 0.67 Hard to measure this snowfall over the last 24 hours. Snow fell during the morning, then stopped, much of what fell melted away in the afternoon, then snow resumed in evening. The reported new accumulation represents only the evening's snowfall.
4/6/2017 7:00 AM 0.00 0.0 M T M
4/7/2017 7:00 AM 0.00 0.0 M 0.0 M
4/8/2017 7:00 AM 0.00 0.0 M 0.0 M
4/9/2017 7:00 AM 0.00 0.0 M M M
4/10/2017 7:00 AM 0.00 0.0 M M M
4/11/2017 7:00 AM 0.00 0.0 M M M
4/12/2017 7:00 AM 0.00 0.0 M M M
4/13/2017 7:00 AM 0.00 0.0 M M M
4/14/2017 7:00 AM 0.00 0.0 M M M
4/15/2017 7:00 AM 0.00 0.0 M M M
4/16/2017 7:00 AM 0.00 0.0 M M M
4/17/2017 7:00 AM 0.00 0.0 M M M
4/18/2017 7:00 AM 0.00 0.0 M M M
4/19/2017 7:00 AM 0.00 0.0 M M M
4/20/2017 7:00 AM 0.00 0.0 M M M
4/21/2017 7:00 AM 0.20 0.0 M 0.0 M
4/22/2017 7:00 AM 0.03 0.0 M 0.0 M
4/23/2017 7:00 AM T 0.0 M 0.0 M
4/24/2017 7:00 AM 0.00 0.0 M 0.0 M
4/25/2017 7:00 AM 0.00 0.0 M 0.0 M
4/26/2017 7:00 AM 0.15 0.0 M 0.0 M If any of the precip. fell as snow, it was during the night and I did not see it. But, I don't think so.
4/27/2017 7:00 AM 0.00 0.0 M 0.0 M
4/28/2017 7:00 AM 0.02 0.0 M 0.0 M
4/29/2017 7:00 AM 0.56 6.0 0.49 6.0 0.49 I checked my gauge at 9 p.m.; only a trace in the bottom of the tube was water (rain or melted snow), all the rest at that time, 0.22", was snow in the funnel that had to be melted. By 7 a.m., the additional snow in the gauge added 0.34" when melted, to total 0.56" total water content.
4/30/2017 7:00 AM 0.20 1.7 0.22 4.5 0.56
5/1/2017 7:00 AM 0.00 0.0 M 0.0 M
5/2/2017 7:00 AM 0.00 0.0 M 0.0 M
5/3/2017 7:00 AM 0.19 0.0 M 0.0 M Precip. began shortly after midnight, as (small-pea-sized) hail, accompanied by thunder & lightning (which woke me up). Hail only lasted for a short time (about 10 minutes?). A little hail remained in the grassy areas at my 7 a.m. measurement time. Precip. continued (as far as I know) as light drizzle, until morning and continuing.
5/4/2017 7:00 AM 0.08 0.0 M 0.0 M
5/5/2017 7:00 AM 0.00 0.0 M 0.0 M
5/6/2017 7:00 AM 0.00 0.0 M 0.0 M
5/7/2017 7:00 AM 0.00 0.0 M 0.0 M
5/8/2017 7:00 AM 0.03 0.0 M 0.0 M
5/9/2017 6:30 AM 0.41 0.0 M 0.0 M Storm began as hail, from pea up to golf-ball size. Some of the hail was probably not collected in the rain gauge, as the funnel was in place and much of it probably bounced out.
5/10/2017 7:00 AM T M M M M
5/11/2017 7:00 AM 0.33 M M M M
5/12/2017 7:00 AM 0.00 0.0 M M M
5/13/2017 7:00 AM T M M M M
5/14/2017 7:00 AM 0.00 0.0 M M M
5/15/2017 7:00 AM 0.00 0.0 M M M
5/16/2017 7:00 AM 0.00 0.0 M M M
5/17/2017 7:00 AM 0.01 M M M M
5/18/2017 7:00 AM 1.00 0.5 0.27 0.5 0.27 Most of the precip. so far fell as rain, but it changed to sleet & snow early this morning. In my rain gauge, 0.73" fell as rain and snow that melted into the bottom of the gauge, 0.27" was wet snow that collected unmelted in the funnel. As of 7 a.m., snow has accumulated on grass, trees, and cars, but not on pavement.
5/19/2017 7:00 AM 0.90 1.5 0.52 2.0 0.54 Precip. fell as a mixture of rain, melting snow, and wet snow that accumulated on grass but not on pavement. I'm sure that more snow had accumulated at times, but subsequently partially melted.
5/20/2017 7:00 AM T 0.0 M 0.0 M
5/21/2017 7:00 AM 0.00 0.0 M M M
5/22/2017 7:00 AM 0.17 M M M M
5/23/2017 7:00 AM 0.22 M M M M
5/24/2017 7:00 AM 0.00 0.0 M M M
5/25/2017 7:00 AM 0.00 0.0 M M M
5/26/2017 7:00 AM 0.27 M M M M
5/27/2017 7:00 AM 0.01 M M M M
5/28/2017 7:00 AM 0.53 M M M M
5/29/2017 7:00 AM 0.00 0.0 M M M
5/30/2017 7:00 AM T M M M M
5/31/2017 7:00 AM 0.01 M M M M
6/1/2017 7:00 AM 0.00 0.0 M M M
6/2/2017 7:00 AM T M M M M
6/3/2017 7:00 AM 0.05 M M M M
6/4/2017 7:00 AM 0.00 0.0 M M M
6/5/2017 7:00 AM 0.00 0.0 M M M
6/6/2017 7:00 AM T M M M M
6/7/2017 7:00 AM 0.00 0.0 M M M
6/8/2017 7:00 AM 0.01 M M M M
6/9/2017 7:00 AM T M M M M
6/10/2017 7:00 AM 0.00 0.0 M M M
6/11/2017 7:00 AM 0.00 0.0 M M M
6/12/2017 7:00 AM 0.00 0.0 M M M
6/13/2017 7:00 AM 0.00 0.0 M M M
6/14/2017 7:00 AM 0.00 0.0 M M M
6/15/2017 7:00 AM 0.00 0.0 M M M
6/16/2017 7:00 AM 0.00 0.0 M M M
6/17/2017 7:00 AM 0.00 0.0 M M M
6/18/2017 7:00 AM 0.01 M M M M
6/19/2017 7:00 AM 0.00 0.0 M M M
6/20/2017 7:00 AM 0.00 0.0 M M M
6/21/2017 7:00 AM 0.00 0.0 M M M
6/22/2017 7:00 AM 0.00 0.0 M M M
6/23/2017 7:00 AM 0.12 M M M M
6/24/2017 6:15 AM 0.02 M M M M
6/25/2017 7:00 AM 0.00 0.0 M M M
6/26/2017 7:00 AM 0.00 0.0 M M M
6/27/2017 7:00 AM 0.00 0.0 M M M
6/28/2017 7:00 AM 0.00 0.0 M M M
6/29/2017 7:00 AM 0.00 0.0 M M M
6/30/2017 7:00 AM 0.33 M M M M
7/1/2017 7:00 AM 0.00 0.0 M M M
7/2/2017 7:00 AM 0.00 0.0 M M M
7/3/2017 7:00 AM 0.00 0.0 M M M
7/4/2017 7:00 AM 0.00 0.0 M M M
7/5/2017 7:00 AM 0.00 0.0 M M M
7/6/2017 7:00 AM 0.00 0.0 M M M
7/7/2017 7:00 AM 0.00 0.0 M M M
7/8/2017 7:00 AM 0.00 0.0 M M M
7/9/2017 7:00 AM 0.00 0.0 M M M
7/10/2017 7:00 AM 0.00 0.0 M M M
7/11/2017 7:00 AM T M M M M
7/12/2017 7:00 AM T M M M M
7/13/2017 7:00 AM 0.02 M M M M
7/14/2017 7:00 AM 0.00 0.0 M M M
7/15/2017 7:00 AM 0.23 M M M M
7/16/2017 7:00 AM 0.03 M M M M
7/17/2017 7:00 AM 0.00 0.0 M M M
7/18/2017 7:00 AM 0.00 0.0 M M M
7/19/2017 7:00 AM T M M M M
7/20/2017 7:00 AM 0.00 0.0 M M M
7/21/2017 7:00 AM T M M M M
7/22/2017 7:00 AM 0.02 M M M M
7/23/2017 7:00 AM 0.00 0.0 M M M
7/24/2017 7:00 AM 0.00 0.0 M M M
7/25/2017 7:00 AM 0.00 0.0 M M M
7/26/2017 7:00 AM 0.02 M M M M
7/27/2017 7:00 AM 0.34 M M M M
7/28/2017 7:00 AM 0.00 0.0 M M M
7/29/2017 7:00 AM 0.51 M M M M
8/1/2017 7:00 AM 0.00 0.0 M M M
8/2/2017 7:00 AM 0.00 0.0 M M M
8/3/2017 7:00 AM 0.35 M M M M
8/4/2017 7:00 AM 0.02 M M M M
8/5/2017 7:00 AM T M M M M
8/12/2017 7:00 AM T M M M M
8/13/2017 7:00 AM 0.12 M M M M
8/21/2017 7:00 AM 0.00 0.0 M M M
8/22/2017 7:00 AM 0.00 0.0 M M M
8/23/2017 7:00 AM 0.00 0.0 M M M
8/24/2017 7:00 AM 0.00 0.0 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 T M 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 T M 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
9/4/2017 7:00 AM 0.00 0.0 M M M
9/5/2017 7:00 AM 0.00 0.0 M M M
9/6/2017 7:00 AM 0.00 0.0 M M M
9/7/2017 7:00 AM 0.00 0.0 M M M
9/8/2017 7:00 AM 0.00 0.0 M M M
9/9/2017 7:00 AM 0.00 0.0 M M M
9/10/2017 7:00 AM 0.00 0.0 M M M
9/11/2017 7:00 AM 0.00 0.0 M M M
9/13/2017 7:00 AM 0.00 0.0 M M M
9/14/2017 7:00 AM 0.05 M M M M
9/15/2017 7:00 AM 0.00 0.0 M M M
9/16/2017 7:00 AM T M M M M
9/17/2017 7:00 AM 0.00 0.0 M M M
9/18/2017 7:00 AM 0.11 M M M M
9/19/2017 7:00 AM 0.00 0.0 M M M
9/20/2017 7:00 AM 0.00 0.0 M M M
9/21/2017 7:00 AM 0.00 0.0 M M M
9/22/2017 7:00 AM 0.00 0.0 M M M
9/23/2017 7:00 AM 0.03 M M M M
9/24/2017 7:00 AM 0.72 M M M M
9/25/2017 7:00 AM 0.18 M M M M
9/26/2017 7:00 AM 0.02 M M M M
9/27/2017 7:30 AM 0.05 M M M M
9/28/2017 7:30 AM 0.45 M M M M
9/29/2017 7:00 AM 0.04 M M M M
9/30/2017 7:00 AM T M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
7/30/2017 7/31/2017 7:00 AM 2 0.05 M M
8/6/2017 8/08/2017 7:00 AM 3 0.81 M M
8/9/2017 8/11/2017 7:00 AM 3 0.36 M M
8/14/2017 8/20/2017 7:00 AM 7 0.07 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
5/3/2017 12:10 AM 1/4" Pea Size 1/4" Pea Size Rice Mixed 10 3min no damage Continuous False Before rain Same time as smaller hail
5/8/2017 2:45 PM 1 3/4" Golf Ball Size 3/8" 1/4" Pea Size Mixed|Clear Ice|White Ice 10 3min shredded leaves.car dents.broken house windows Continuous False Before rain Before smaller hail 10-20
5/8/2017 2:48 PM The hailstorm was observed on the Denver Federal Center, Lakewood CO, about 4 miles south of my registered location in Wheat Ridge. But, a call to my home, says that approximately the same type & size of hail fell there too. About 12-13 minutes later, there was another brief (about 1 minute) shower of pea-sized hail, around 3:08 p.m. 1 1/4" Half Dollar Size 3/8" 1/4" Pea Size Mixed|White Ice 7 2min shredded leaves.car dents.broken house windows Continuous False Before rain Same time as smaller hail 10-20