Station Overview Station Location
Station Number CO-ME-69 Latitude 39.088668
Station Name Grand Junction 4.0 W Longitude -108.628179
County Mesa Elevation (ft) 4630



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 19 1.19 0.09 31 0.07 30 0.02 1 1 3 1 0.2 1 0
Nov 19 0.88 0.62 30 0.62 30 0.00 0 0 4 3 0.5 1 1
Dec 19 0.55 0.66 31 0.54 25 0.12 6 2 6 1 2.2 1 2
Jan 20 0.53 0.44 31 0.44 31 0.00 0 0 6 7 4.2 5 20
Feb 20 0.51 0.12 22 0.10 20 0.02 2 1 1 0 1.5 1 2
March 20 0.79 1.27 27 1.27 27 0.00 0 0 11 2 0.0 0 0
April 20 0.96 0.33 29 0.33 29 0.00 0 0 5 3 0.0 0 0
May 20 0.80 0.07 31 0.07 31 0.00 0 0 2 3 0.0 0 0
June 20 0.59 0.68 30 0.65 27 0.03 3 1 4 3 0.0 0 0
July 20 0.71 0.12 31 0.12 31 0.00 0 0 4 4 0.0 0 0
Aug 20 1.13 0.05 31 0.03 26 0.02 5 1 1 0 0.0 0 0
Sept 20 1.05 1.09 29 0.00 12 1.09 17 2 0 1 0.0 0 0
Water Year Totals: 9.69" 5.54" 353 days 4.24" 319 1.30" 34 days 8 47 days 28 days 8.6" 9 days 25 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
10/1/2019 0.02
10/2/2019 0.00
10/3/2019 0.00
10/4/2019 0.00
10/5/2019 0.00
10/6/2019 0.00
10/7/2019 0.00
10/8/2019 0.00
10/9/2019 0.00
10/10/2019 T
10/11/2019 0.00
10/12/2019 0.00
10/13/2019 0.00
10/14/2019 0.00
10/15/2019 0.00
10/16/2019 0.00
10/17/2019 0.00
10/18/2019 0.01
10/19/2019 0.00
10/20/2019 0.04
10/21/2019 0.00
10/22/2019 0.00
10/23/2019 0.00
10/24/2019 0.00
10/25/2019 0.00
10/26/2019 0.00
10/27/2019 0.00
10/28/2019 0.00
10/29/2019 0.00
10/30/2019 0.02
10/31/2019 0.00
11/1/2019 0.00
11/2/2019 0.00
11/3/2019 0.00
11/4/2019 0.00
11/5/2019 0.00
11/6/2019 0.00
11/7/2019 0.00
11/8/2019 0.00
11/9/2019 0.00
11/10/2019 0.00
11/11/2019 0.00
11/12/2019 0.00
11/13/2019 0.00
11/14/2019 0.00
11/15/2019 0.00
11/16/2019 0.00
11/17/2019 0.00
11/18/2019 0.00
11/19/2019 0.00
11/20/2019 0.10
11/21/2019 0.13
11/22/2019 T
11/23/2019 T
11/24/2019 0.00
11/25/2019 0.00
11/26/2019 0.18
11/27/2019 T
11/28/2019 0.00
11/29/2019 0.00
11/30/2019 0.21
12/1/2019 0.00
12/2/2019 0.00
12/3/2019 0.00
12/4/2019 0.00
12/5/2019 0.07
12/6/2019 T
12/7/2019 0.00
12/8/2019 0.02
12/9/2019 0.15
12/10/2019 0.00
12/11/2019 0.00
12/12/2019 **
12/13/2019 **
12/14/2019 0.03
12/15/2019 0.03
12/16/2019 0.00
12/17/2019 0.00
12/18/2019 0.00
12/19/2019 0.00
12/20/2019 0.00
12/21/2019 0.00
12/22/2019 0.00
12/23/2019 0.00
12/24/2019 0.00
12/25/2019 0.16
12/26/2019 0.11
12/27/2019 **
12/28/2019 **
12/29/2019 0.09
12/30/2019 0.00
12/31/2019 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.00
1/2/2020 0.09
1/3/2020 0.00
1/4/2020 0.00
1/5/2020 0.00
1/6/2020 T
1/7/2020 0.00
1/8/2020 0.00
1/9/2020 0.00
1/10/2020 T
1/11/2020 0.00
1/12/2020 T
1/13/2020 T
1/14/2020 0.00
1/15/2020 0.00
1/16/2020 0.00
1/17/2020 0.00
1/18/2020 T
1/19/2020 0.00
1/20/2020 0.00
1/21/2020 0.00
1/22/2020 0.12
1/23/2020 0.01
1/24/2020 0.00
1/25/2020 0.00
1/26/2020 0.00
1/27/2020 0.15
1/28/2020 0.06
1/29/2020 0.01
1/30/2020 T
1/31/2020 T
2/1/2020 0.00
2/2/2020 0.00
2/3/2020 0.00
2/4/2020 0.10
2/5/2020 0.00
2/6/2020 0.00
2/7/2020 0.00
2/8/2020 0.00
2/9/2020 **
2/10/2020 0.02
2/11/2020 0.00
2/12/2020 0.00
2/13/2020 0.00
2/14/2020 0.00
2/15/2020 0.00
2/16/2020 0.00
2/17/2020 0.00
2/18/2020 0.00
2/19/2020 0.00
2/20/2020 0.00
2/21/2020 0.00
2/22/2020 0.00
2/23/2020
2/24/2020
2/25/2020
2/26/2020
2/27/2020
2/28/2020
2/29/2020
3/1/2020
3/2/2020
3/3/2020
3/4/2020
3/5/2020 0.00
3/6/2020 0.00
3/7/2020 0.00
3/8/2020 0.00
3/9/2020 T
3/10/2020 0.00
3/11/2020 0.00
3/12/2020 0.02
3/13/2020 0.07
3/14/2020 0.03
3/15/2020 0.00
3/16/2020 0.00
3/17/2020 0.00
3/18/2020 0.00
3/19/2020 0.42
3/20/2020 0.26
3/21/2020 0.06
3/22/2020 0.17
3/23/2020 T
3/24/2020 0.06
3/25/2020 0.00
3/26/2020 0.00
3/27/2020 0.01
3/28/2020 0.15
3/29/2020 0.00
3/30/2020 0.02
3/31/2020 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020 0.00
4/3/2020 0.03
4/4/2020 0.00
4/5/2020 0.00
4/6/2020 0.00
4/7/2020 0.00
4/8/2020 0.00
4/9/2020 0.00
4/10/2020 0.01
4/11/2020 0.00
4/12/2020 T
4/13/2020 0.00
4/14/2020 T
4/15/2020 0.00
4/16/2020 0.00
4/17/2020 0.27
4/18/2020 0.00
4/19/2020 0.01
4/20/2020 0.00
4/21/2020 0.00
4/22/2020 0.00
4/23/2020 0.00
4/24/2020 T
4/25/2020 0.00
4/26/2020
4/27/2020 0.01
4/28/2020 0.00
4/29/2020 0.00
4/30/2020 0.00
5/1/2020 0.00
5/2/2020 0.00
5/3/2020 0.00
5/4/2020 0.00
5/5/2020 0.00
5/6/2020 0.00
5/7/2020 0.00
5/8/2020 0.00
5/9/2020 0.00
5/10/2020 0.00
5/11/2020 T
5/12/2020 0.01
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.00
5/16/2020 T
5/17/2020 0.00
5/18/2020 0.00
5/19/2020 0.00
5/20/2020 0.00
5/21/2020 0.00
5/22/2020 0.00
5/23/2020 0.00
5/24/2020 0.00
5/25/2020 0.00
5/26/2020 0.00
5/27/2020 0.00
5/28/2020 T
5/29/2020 0.00
5/30/2020 0.00
5/31/2020 0.06
6/1/2020 T
6/2/2020 0.00
6/3/2020 0.00
6/4/2020 0.00
6/5/2020 0.00
6/6/2020 0.30
6/7/2020 0.17
6/8/2020 0.00
6/9/2020 T
6/10/2020 0.00
6/11/2020 0.00
6/12/2020 0.00
6/13/2020 0.00
6/14/2020 T
6/15/2020 0.00
6/16/2020 0.00
6/17/2020 0.00
6/18/2020 0.00
6/19/2020 0.00
6/20/2020 0.00
6/21/2020 0.00
6/22/2020 0.00
6/23/2020 0.00
6/24/2020 0.00
6/25/2020 0.00
6/26/2020 0.16
6/27/2020 **
6/28/2020 **
6/29/2020 0.03
6/30/2020 0.02
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.00
7/2/2020 0.00
7/3/2020 0.00
7/4/2020 0.00
7/5/2020 T
7/6/2020 0.00
7/7/2020 0.00
7/8/2020 0.00
7/9/2020 0.00
7/10/2020 0.00
7/11/2020 0.00
7/12/2020 0.00
7/13/2020 0.06
7/14/2020 0.00
7/15/2020 0.00
7/16/2020 0.00
7/17/2020 T
7/18/2020 0.01
7/19/2020 0.01
7/20/2020 0.00
7/21/2020 0.00
7/22/2020 0.00
7/23/2020 T
7/24/2020 0.04
7/25/2020 0.00
7/26/2020 0.00
7/27/2020 0.00
7/28/2020 0.00
7/29/2020 0.00
7/30/2020 T
7/31/2020 0.00
8/1/2020 0.00
8/2/2020 0.00
8/3/2020 0.00
8/4/2020 0.00
8/5/2020 0.00
8/6/2020 0.00
8/7/2020 0.00
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.00
8/11/2020 0.00
8/12/2020 0.00
8/13/2020 0.00
8/14/2020 0.00
8/15/2020 0.00
8/16/2020 0.00
8/17/2020 0.00
8/18/2020 0.00
8/19/2020 0.00
8/20/2020 0.00
8/21/2020 0.00
8/22/2020 0.00
8/23/2020 0.00
8/24/2020 0.00
8/25/2020 0.00
8/26/2020 **
8/27/2020 **
8/28/2020 **
8/29/2020 0.02
8/30/2020 0.03
8/31/2020 **
9/1/2020 **
9/2/2020 **
9/3/2020 **
9/4/2020 0.06
9/5/2020 0.00
9/6/2020 0.00
9/7/2020
9/8/2020 **
9/9/2020 **
9/10/2020 **
9/11/2020 **
9/12/2020 **
9/13/2020 **
9/14/2020 **
9/15/2020 **
9/16/2020 **
9/17/2020 **
9/18/2020 **
9/19/2020 **
9/20/2020 1.03
9/21/2020 0.00
9/22/2020 0.00
9/23/2020 T
9/24/2020 0.00
9/25/2020 0.00
9/26/2020 0.00
9/27/2020 0.00
9/28/2020 0.00
9/29/2020 0.00
9/30/2020 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/2/2019 7:00 AM 0.00 0.0 M 0.0 M
10/3/2019 7:00 AM 0.00 0.0 M 0.0 M
10/4/2019 7:00 AM 0.00 0.0 M 0.0 M
10/5/2019 7:00 AM 0.00 0.0 M 0.0 M
10/6/2019 7:00 AM 0.00 0.0 M 0.0 M
10/7/2019 7:00 AM 0.00 0.0 M 0.0 M
10/8/2019 7:00 AM 0.00 0.0 M 0.0 M
10/9/2019 7:00 AM 0.00 0.0 M 0.0 M
10/10/2019 7:00 AM T 0.0 M 0.0 M My location experienced a very light rain shower last evening around 2100 MDT.
10/11/2019 7:00 AM 0.00 0.0 M 0.0 M
10/12/2019 7:00 AM 0.00 0.0 M 0.0 M
10/13/2019 7:00 AM 0.00 0.0 M 0.0 M
10/14/2019 7:00 AM 0.00 0.0 M 0.0 M
10/15/2019 7:00 AM 0.00 0.0 M 0.0 M
10/16/2019 7:00 AM 0.00 0.0 M 0.0 M
10/17/2019 7:00 AM 0.00 0.0 M 0.0 M
10/18/2019 8:00 AM 0.01 0.0 M 0.0 M
10/19/2019 7:00 AM 0.00 0.0 M 0.0 M
10/20/2019 7:00 AM 0.04 0.0 M 0.0 M
10/21/2019 7:00 AM 0.00 0.0 M 0.0 M
10/22/2019 7:00 AM 0.00 0.0 M 0.0 M
10/23/2019 7:00 AM 0.00 0.0 M 0.0 M
10/24/2019 7:00 AM 0.00 0.0 M 0.0 M
10/25/2019 7:00 AM 0.00 0.0 M 0.0 M
10/26/2019 7:00 AM 0.00 0.0 M 0.0 M
10/27/2019 7:00 AM 0.00 0.0 M 0.0 M
10/28/2019 7:00 AM 0.00 0.0 M 0.0 M
10/29/2019 7:00 AM 0.00 0.0 M 0.0 M
10/30/2019 7:00 AM 0.02 0.2 0.02 T M Prior to the measured snowfall, a snow pellet shower occurred around 1250 MDT. Total depth of snow was actually 0.2", but that amount to the nearest half inch is of course just a trace.
10/31/2019 7:00 AM 0.00 0.0 M T M A thin layer of snow remained in the mostly-shaded areas at the time of observation.
11/1/2019 7:00 AM 0.00 0.0 M T M A thin layer of snow remained mostly in the shaded areas.
11/2/2019 7:00 AM 0.00 0.0 M T M
11/3/2019 7:00 AM 0.00 0.0 M T M
11/4/2019 7:00 AM 0.00 0.0 M 0.0 M
11/5/2019 7:00 AM 0.00 0.0 M 0.0 M
11/6/2019 7:00 AM 0.00 0.0 M 0.0 M
11/7/2019 7:00 AM 0.00 0.0 M 0.0 M
11/8/2019 7:00 AM 0.00 0.0 M 0.0 M
11/9/2019 7:00 AM 0.00 0.0 M 0.0 M
11/10/2019 7:00 AM 0.00 0.0 M 0.0 M
11/11/2019 7:00 AM 0.00 0.0 M 0.0 M
11/12/2019 7:00 AM 0.00 0.0 M 0.0 M
11/13/2019 7:00 AM 0.00 0.0 M 0.0 M
11/14/2019 7:00 AM 0.00 0.0 M 0.0 M
11/15/2019 7:00 AM 0.00 0.0 M 0.0 M
11/16/2019 7:00 AM 0.00 0.0 M 0.0 M
11/17/2019 7:00 AM 0.00 0.0 M 0.0 M
11/18/2019 7:00 AM 0.00 0.0 M 0.0 M
11/19/2019 7:00 AM 0.00 0.0 M 0.0 M
11/20/2019 7:00 AM 0.10 0.0 M 0.0 M
11/21/2019 7:00 AM 0.13 0.0 M 0.0 M
11/22/2019 7:00 AM T 0.0 M 0.0 M
11/23/2019 7:00 AM T 0.0 M 0.0 M Light rain occurred between 1420 and 1430 MST.
11/24/2019 7:00 AM 0.00 0.0 M 0.0 M
11/25/2019 7:00 AM 0.00 0.0 M 0.0 M
11/26/2019 7:00 AM 0.18 0.5 M 0.5 M Rain initiated about 1745 MST and then began to transition to snow beginning about 2045 MST.
11/27/2019 7:00 AM T T M T M A light snow shower occurred around 1400 MST yesterday.
11/28/2019 7:00 AM 0.00 0.0 M 0.0 M
11/29/2019 7:00 AM 0.00 0.0 M 0.0 M
11/30/2019 7:00 AM 0.21 0.0 M 0.0 M Most of the rainfall, 0.20 of an inch, fell within an hour around noon MST yesterday.
12/1/2019 7:00 AM 0.00 0.0 M 0.0 M
12/2/2019 7:00 AM 0.00 0.0 M 0.0 M
12/3/2019 7:00 AM 0.00 0.0 M 0.0 M
12/4/2019 7:00 AM 0.00 0.0 M 0.0 M
12/5/2019 7:00 AM 0.07 0.0 M 0.0 M
12/6/2019 7:00 AM T 0.0 M 0.0 M
12/7/2019 7:00 AM 0.00 0.0 M 0.0 M
12/8/2019 7:00 AM 0.02 0.0 M 0.0 M It was raining lightly at the time of observation.
12/9/2019 7:00 AM 0.15 0.0 M 0.0 M Most of the rainfall, 0.13", fell within a 20-minute period yesterday during a thunderstorm, between 1220 and 1240 MST. Dense fog was present at the time of observation this morning, with the visibility about 50 feet.
12/10/2019 7:00 AM 0.00 0.0 M 0.0 M
12/11/2019 7:00 AM 0.00 0.0 M 0.0 M
12/15/2019 7:00 AM 0.03 0.0 M 0.0 M It rained for a while yesterday starting around noon MST and ended shortly before 1330 MST.
12/16/2019 7:00 AM 0.00 0.0 M 0.0 M
12/17/2019 7:00 AM 0.00 0.0 M 0.0 M
12/18/2019 7:00 AM 0.00 0.0 M 0.0 M
12/19/2019 7:00 AM 0.00 0.0 M 0.0 M
12/20/2019 7:00 AM 0.00 0.0 M 0.0 M
12/21/2019 7:00 AM 0.00 0.0 M 0.0 M
12/22/2019 7:00 AM 0.00 0.0 M 0.0 M
12/23/2019 7:00 AM 0.00 0.0 M 0.0 M
12/24/2019 7:00 AM 0.00 0.0 M 0.0 M
12/25/2019 8:00 AM 0.16 T M T M It was snowing lightly at the time of observation. Graupel accompanied the snowfall.
12/26/2019 7:00 AM 0.11 2.2 0.10 2.0 0.10 Light snowfall continued shortly after the previous day's precipitation measurement, which resulted in 0.01 while all of that snowfall melted. The 2.2 inches of new snow which accumulated at a later time mainly during the night had a SWE of 0.10.
12/30/2019 7:00 AM 0.00 0.0 M 0.5 0.03 The average snow depth today at observation time is 0.3 of an inch. The average snow depth yesterday at observation time was 0.6 of an inch.
12/31/2019 7:00 AM 0.00 0.0 M T M
1/1/2020 7:00 AM 0.00 0.0 M T M
1/2/2020 7:00 AM 0.09 1.1 0.09 1.0 M
1/3/2020 7:00 AM 0.00 0.0 M 0.5 0.09
1/4/2020 7:00 AM 0.00 0.0 M 0.5 0.05
1/5/2020 7:00 AM 0.00 0.0 M 0.5 0.05 It has been foggy since last evening. Snow grains precipitated out of the fog to a depth of 0.2" in some areas of the valley last evening, including the area around the CMU campus.
1/6/2020 7:00 AM T T M 0.5 0.05 Snow grains were precipitating from the low clouds and fog around 2300 MST last evening.
1/7/2020 7:00 AM 0.00 0.0 M 0.5 0.03
1/8/2020 7:00 AM 0.00 0.0 M 0.5 M Patchy dense fog spread into the observation site last evening and was still present at the time of observation this morning. Shaded areas still have about an inch of snow depth while unshaded areas have little or no snow cover.
1/9/2020 7:00 AM 0.00 0.0 M 0.5 M
1/10/2020 7:00 AM T T M 0.5 M Snow flurries occurred around 1500 MST yesterday.
1/11/2020 7:00 AM 0.00 0.0 M 0.5 M
1/12/2020 7:00 AM T T M 0.5 M A snow flurry occurred around 1130 MST yesterday.
1/13/2020 7:00 AM T T M 0.5 M The first in a series of very light snow showers and flurries began about 1315 MST yesterday.
1/14/2020 7:00 AM 0.00 0.0 M 0.5 M
1/15/2020 7:00 AM 0.00 0.0 M 0.5 M About a fourth of the remaining snow in the shaded areas melted yesterday as temperatures in the afternoon rose up into the lower 40s. Nonetheless, the totally shaded areas still have about an inch of snow on average upon the ground.
1/16/2020 7:00 AM 0.00 0.0 M T M The mild daytime temperatures (into the 40s F) the past couple of days reduced the amount of snow remaining on the ground by about 50%.
1/17/2020 7:00 AM 0.00 0.0 M T M
1/18/2020 7:00 AM T T M T M Snow pellets occurred around 0830 MST yesterday, followed by light rain shortly after 1000 MST, then very light snow (0.75" diameter snowflakes) shortly after 1100 MST. Then windy conditions occurred thereafter for the rest of the daylight hours. A little snow remained on the ground in the shaded areas as of the time of observation.
1/19/2020 7:00 AM 0.00 0.0 M T M Sone snow remains on the ground in the totally shaded areas.
1/20/2020 7:00 AM 0.00 0.0 M T M
1/21/2020 7:00 AM 0.00 0.0 M T M
1/22/2020 7:00 AM 0.12 0.8 0.12 0.5 0.12 Light snowfall began shortly after 0900 MST yesterday and continued without any significant breaks until about 2200 MST last evening. The snowfall which occurred in the morning mostly melted. Then it began to accumulate again beginning around sunset.
1/23/2020 7:00 AM 0.01 T M T M Persistent light snow in the form of tiny prisms or plates occurred between 1900 and 2100 MST last evening.
1/24/2020 7:00 AM 0.00 0.0 M T M
1/25/2020 7:00 AM 0.00 0.0 M T M
1/26/2020 7:00 AM 0.00 0.0 M T M
1/27/2020 7:30 AM 0.15 1.6 0.15 1.5 0.15 It was still snowing at the time of observation.
1/28/2020 7:00 AM 0.06 0.6 0.06 1.0 M
1/29/2020 7:00 AM 0.01 0.1 0.01 0.5 M
1/30/2020 7:00 AM T T M 0.5 M Very light snow fell continuously from about 0835 to 0905 MST yesterday.
1/31/2020 7:00 AM T T M 0.5 M Very light and continuous snowfall occurred from about 1050 MST until about noon MST yesterday.
2/1/2020 7:00 AM 0.00 0.0 M T M
2/2/2020 7:00 AM 0.00 0.0 M T M
2/3/2020 7:00 AM 0.00 0.0 M T M
2/4/2020 7:00 AM 0.10 1.5 0.06 1.5 0.06 Very low density snow accumulation occurred during the night, with a snow water equivalent ratio of 25:1. All of the snow which fell during the day yesterday (water content of 0.04) melted as it fell due to relatively warm ground temperatures.
2/5/2020 7:00 AM 0.00 0.0 M 0.5 M
2/6/2020 7:00 AM 0.00 0.0 M T M
2/7/2020 7:00 AM 0.00 0.0 M T M
2/8/2020 7:00 AM 0.00 0.0 M T M
2/11/2020 7:00 AM 0.00 0.0 M 0.0 M
2/12/2020 7:00 AM 0.00 0.0 M 0.0 M
2/13/2020 7:00 AM 0.00 0.0 M 0.0 M
2/14/2020 7:00 AM 0.00 0.0 M 0.0 M
2/15/2020 7:00 AM 0.00 0.0 M 0.0 M
2/16/2020 7:00 AM 0.00 0.0 M 0.0 M
2/17/2020 7:00 AM 0.00 0.0 M 0.0 M
2/18/2020 7:00 AM 0.00 0.0 M 0.0 M
2/19/2020 7:00 AM 0.00 0.0 M 0.0 M
2/20/2020 7:00 AM 0.00 0.0 M 0.0 M
2/21/2020 7:00 AM 0.00 0.0 M 0.0 M
2/22/2020 7:00 AM 0.00 0.0 M 0.0 M
3/5/2020 7:00 AM 0.00 0.0 M 0.0 M
3/6/2020 7:00 AM 0.00 0.0 M 0.0 M
3/7/2020 7:00 AM 0.00 0.0 M 0.0 M
3/8/2020 7:00 AM 0.00 0.0 M 0.0 M
3/9/2020 7:00 AM T 0.0 M 0.0 M
3/10/2020 7:00 AM 0.00 0.0 M 0.0 M
3/11/2020 7:00 AM 0.00 0.0 M 0.0 M There were showers observed around the adjacent mountains and the eastern part of the Grand Valley yesterday
3/12/2020 7:00 AM 0.02 0.0 M 0.0 M Light rain showers occurred occasionally throughout the daylight hours yesterday at my location.
3/13/2020 7:30 AM 0.07 0.0 M 0.0 M It was still raining lightly at my location at the time of observation.
3/14/2020 7:00 AM 0.03 0.0 M 0.0 M
3/15/2020 7:00 AM 0.00 0.0 M 0.0 M
3/16/2020 7:00 AM 0.00 0.0 M 0.0 M
3/17/2020 7:00 AM 0.00 0.0 M 0.0 M
3/18/2020 7:00 AM 0.00 0.0 M 0.0 M
3/19/2020 7:20 AM 0.42 0.0 M 0.0 M It was still raining at the time of observation.
3/20/2020 7:00 AM 0.26 T M 0.0 M Rain transitioned to snow shortly before 1000 MDT yesterday, and then the snowfall quit around 1130 MDT yesterday. All of the snow melted as it fell.
3/21/2020 7:00 AM 0.06 T M 0.0 M A shower occurred in the late afternoon which consisted of snow pellets and rain, but mostly snow pellets.
3/22/2020 7:00 AM 0.17 T M 0.0 M At least one of the showers included snow pellets. That shower occurred late yesterday afternoon.
3/23/2020 7:00 AM T 0.0 M 0.0 M A light rain shower occurred around midday yesterday.
3/24/2020 7:00 AM 0.06 0.0 M 0.0 M There were at least two rain showers yesterday. The primary precipitation producer within the last 24 hours began about 1355 MDT and ended about 1450 MDT.
3/25/2020 7:00 AM 0.00 0.0 M 0.0 M
3/26/2020 7:00 AM 0.00 0.0 M 0.0 M
3/27/2020 7:00 AM 0.01 0.0 M 0.0 M It was raining very lightly at the time of observation.
3/28/2020 7:00 AM 0.15 T M 0.0 M Most of the precipitation was in the form of snowflakes or snow pellets which melted as it fell onto paved surfaces and only remained a short time before melting on vegetation. There was a short period of rain just prior to a thunderstorm which produced pea-sized hail up to 3/8 of an inch in diameter. Hail accumulated up to a half inch deep on my deck.
3/29/2020 7:00 AM 0.00 0.0 M 0.0 M
3/30/2020 7:00 AM 0.02 0.0 M 0.0 M
3/31/2020 7:00 AM 0.00 0.0 M 0.0 M
4/1/2020 7:00 AM 0.00 0.0 M 0.0 M
4/2/2020 7:00 AM 0.00 0.0 M 0.0 M
4/3/2020 7:00 AM 0.03 T M 0.0 M It began raining very lightly yesterday morning shortly after 0900 MST. The rain then changed to very light snowfall about 1230 MST and continued until about 1530 MST.
4/4/2020 7:00 AM 0.00 0.0 M 0.0 M
4/5/2020 7:00 AM 0.00 0.0 M 0.0 M
4/6/2020 7:00 AM 0.00 0.0 M 0.0 M
4/7/2020 7:00 AM 0.00 0.0 M 0.0 M
4/8/2020 7:00 AM 0.00 0.0 M 0.0 M
4/9/2020 7:00 AM 0.00 0.0 M 0.0 M
4/10/2020 7:00 AM 0.01 0.0 M 0.0 M Light rain showers and thunderstorms began at 1535 MDT and persisted until about 1715 MDT.
4/11/2020 7:00 AM 0.00 0.0 M 0.0 M
4/12/2020 7:00 AM T 0.0 M 0.0 M
4/13/2020 7:00 AM 0.00 0.0 M 0.0 M
4/14/2020 7:00 AM T T M 0.0 M A snow shower occurred last evening, reducing the visibility to the southwest to about 3 miles. The small snowflakes melted as they fell. A few snow flurries also occurred about a half hour later.
4/15/2020 7:00 AM 0.00 0.0 M 0.0 M
4/16/2020 7:00 AM 0.00 0.0 M 0.0 M
4/17/2020 7:00 AM 0.27 0.0 M 0.0 M Nearly continuous rainfall occurred from 0710 MST to ~1130 MST which produced 0.26 of an inch. Another rain shower early in the afternoon resulted in 0.01 of an inch.
4/18/2020 7:00 AM 0.00 0.0 M 0.0 M
4/19/2020 7:00 AM 0.01 0.0 M 0.0 M
4/20/2020 7:00 AM 0.00 0.0 M 0.0 M
4/21/2020 7:00 AM 0.00 0.0 M 0.0 M
4/22/2020 7:00 AM 0.00 0.0 M 0.0 M
4/23/2020 7:00 AM 0.00 0.0 M 0.0 M
4/24/2020 7:00 AM T 0.0 M 0.0 M At least two light rain showers occurred last evening. The first began about 1840 MDT. The last one ended around 2030 MDT. The main impact from the showers was gusty outflow winds.
4/25/2020 7:00 AM 0.00 0.0 M 0.0 M
4/27/2020 7:00 AM 0.01 0.0 M 0.0 M It began to rain lightly yesterday afternoon at 1533 MDT and continued to rain lightly for about 25 minutes, except for one burst of rainfall accompanied by winds which were estimated to gust to about 40 mph.
4/28/2020 7:00 AM 0.00 0.0 M 0.0 M
4/29/2020 7:00 AM 0.00 0.0 M 0.0 M
4/30/2020 7:00 AM 0.00 0.0 M 0.0 M
5/1/2020 7:00 AM 0.00 0.0 M 0.0 M
5/2/2020 7:00 AM 0.00 0.0 M 0.0 M
5/3/2020 7:00 AM 0.00 0.0 M 0.0 M
5/4/2020 7:00 AM 0.00 0.0 M 0.0 M
5/5/2020 7:00 AM 0.00 0.0 M 0.0 M
5/6/2020 7:00 AM 0.00 0.0 M 0.0 M
5/7/2020 7:00 AM 0.00 0.0 M 0.0 M
5/8/2020 7:00 AM 0.00 0.0 M 0.0 M
5/9/2020 7:00 AM 0.00 0.0 M 0.0 M
5/10/2020 7:00 AM 0.00 0.0 M 0.0 M
5/11/2020 7:00 AM T 0.0 M 0.0 M It was raining lightly at the time of observation.
5/12/2020 7:00 AM 0.01 0.0 M 0.0 M There were at least four rain showers during the past 24 hours; one in the early morning one in the late afternoon, and two in the evening. Even so, the amount of rain with each shower was very light. The second and fourth showers were accompanied by lightning.
5/13/2020 7:00 AM 0.00 0.0 M 0.0 M
5/14/2020 7:00 AM 0.00 0.0 M 0.0 M
5/15/2020 7:00 AM 0.00 0.0 M 0.0 M
5/16/2020 7:00 AM T 0.0 M 0.0 M A very light rain shower occurred at this location early in the evening. A few hours prior to that shower there was an outflow wind event preceded amd accompanied by virga.
5/17/2020 7:00 AM 0.00 0.0 M 0.0 M
5/18/2020 7:00 AM 0.00 0.0 M 0.0 M
5/19/2020 7:00 AM 0.00 0.0 M 0.0 M
5/20/2020 7:00 AM 0.00 0.0 M 0.0 M
5/21/2020 7:00 AM 0.00 0.0 M 0.0 M
5/22/2020 7:00 AM 0.00 0.0 M 0.0 M
5/23/2020 7:00 AM 0.00 0.0 M 0.0 M
5/24/2020 7:00 AM 0.00 0.0 M 0.0 M
5/25/2020 7:00 AM 0.00 0.0 M 0.0 M
5/26/2020 7:00 AM 0.00 0.0 M 0.0 M
5/27/2020 7:00 AM 0.00 0.0 M 0.0 M
5/28/2020 7:00 AM T 0.0 M 0.0 M Light rain briefly fell on this location at the leading edge of outflow from a cloud buildup. The outflow winds had estimated gusts to at least 40 mph which produced areas of blowing dust in the Grand Valley.
5/29/2020 7:00 AM 0.00 0.0 M 0.0 M
5/30/2020 7:00 AM 0.00 0.0 M 0.0 M
5/31/2020 7:00 AM 0.06 0.0 M 0.0 M There were several rain showers at this location during the past 24 hours. Most of the showers were associated with thunderstorms. The first shower began about 1500 MDT.
6/1/2020 7:00 AM T 0.0 M 0.0 M There were at least two light rain showers at this location; one occurred from 1739 to 1745 MDT, and the second of similar duration began around 1900 MDT.
6/2/2020 7:00 AM 0.00 0.0 M 0.0 M
6/3/2020 7:00 AM 0.00 0.0 M 0.0 M
6/4/2020 7:00 AM 0.00 0.0 M 0.0 M
6/5/2020 7:00 AM 0.00 0.0 M 0.0 M
6/6/2020 7:00 AM 0.30 0.0 M 0.0 M
6/7/2020 7:00 AM 0.17 0.0 M 0.0 M
6/8/2020 7:00 AM 0.00 0.0 M 0.0 M
6/9/2020 7:00 AM T 0.0 M 0.0 M Light rain fell at rhis location almost continuously from 1730 MDT to 2000 MDT.
6/10/2020 7:00 AM 0.00 0.0 M 0.0 M
6/11/2020 7:00 AM 0.00 0.0 M 0.0 M
6/12/2020 7:00 AM 0.00 0.0 M 0.0 M
6/13/2020 7:00 AM 0.00 0.0 M 0.0 M
6/14/2020 7:00 AM T 0.0 M 0.0 M High-based thunderstorms produced strong outflow winds and some CG lightning in my area. One of those events produced some very light rainfall at my location.
6/15/2020 7:00 AM 0.00 0.0 M 0.0 M
6/16/2020 7:00 AM 0.00 0.0 M 0.0 M
6/17/2020 7:00 AM 0.00 0.0 M 0.0 M
6/18/2020 7:00 AM 0.00 0.0 M 0.0 M
6/19/2020 7:00 AM 0.00 0.0 M 0.0 M
6/20/2020 7:00 AM 0.00 0.0 M 0.0 M
6/21/2020 7:00 AM 0.00 0.0 M 0.0 M
6/22/2020 7:00 AM 0.00 0.0 M 0.0 M
6/23/2020 7:00 AM 0.00 0.0 M 0.0 M
6/24/2020 7:00 AM 0.00 0.0 M 0.0 M
6/25/2020 7:00 AM 0.00 0.0 M 0.0 M
6/26/2020 7:00 AM 0.16 0.0 M 0.0 M The first of multiple thunderstorms yesterday afternoon and evening began about 1330 MDT.
6/30/2020 7:00 AM 0.02 0.0 M 0.0 M Occasional light rainfall occurred last evening between 1805 and 1900 MDT. However, the measurable rainfall came sometime during the night.
7/1/2020 7:00 AM 0.00 0.0 M 0.0 M
7/2/2020 7:00 AM 0.00 0.0 M 0.0 M
7/3/2020 7:00 AM 0.00 0.0 M 0.0 M
7/4/2020 7:00 AM 0.00 0.0 M 0.0 M
7/5/2020 7:00 AM T 0.0 M 0.0 M Several very light rain showers occurred yesterday at this location between 1530 and 1700 MDT. Thunderstorms also occurred during that same time period between 5 and 10 miles southeast of this location.
7/6/2020 7:00 AM 0.00 0.0 M 0.0 M
7/7/2020 7:00 AM 0.00 0.0 M 0.0 M Some glaciation of mid level clouds occurred yesterday.
7/8/2020 7:00 AM 0.00 0.0 M 0.0 M
7/9/2020 7:00 AM 0.00 0.0 M 0.0 M
7/10/2020 7:00 AM 0.00 0.0 M 0.0 M
7/11/2020 7:00 AM 0.00 0.0 M 0.0 M
7/12/2020 7:00 AM 0.00 0.0 M 0.0 M
7/13/2020 7:00 AM 0.06 0.0 M 0.0 M Lightning accompanied the rainfall.
7/14/2020 7:00 AM 0.00 0.0 M 0.0 M
7/15/2020 7:00 AM 0.00 0.0 M 0.0 M There were light showers nearby last evening which produced gusty outflow winds.
7/16/2020 7:00 AM 0.00 0.0 M 0.0 M
7/17/2020 7:00 AM T 0.0 M 0.0 M
7/18/2020 7:00 AM 0.01 0.0 M 0.0 M
7/19/2020 7:00 AM 0.01 0.0 M 0.0 M It apparently rained overnight.
7/20/2020 7:00 AM 0.00 0.0 M 0.0 M
7/21/2020 7:00 AM 0.00 0.0 M 0.0 M
7/22/2020 7:00 AM 0.00 0.0 M 0.0 M
7/23/2020 7:00 AM T 0.0 M 0.0 M At least a few light rain showers occurred during the late afternoon hours. The first shower began about 1445 MDT.
7/24/2020 7:00 AM 0.04 0.0 M 0.0 M It rained at this location overnight.
7/25/2020 7:00 AM 0.00 0.0 M 0.0 M
7/26/2020 7:00 AM 0.00 0.0 M 0.0 M
7/27/2020 7:00 AM 0.00 0.0 M 0.0 M
7/28/2020 7:00 AM 0.00 0.0 M 0.0 M
7/29/2020 7:00 AM 0.00 0.0 M 0.0 M
7/30/2020 7:00 AM T 0.0 M 0.0 M Gusty winds estimated up to 40 mph accompanied the rainfall at this location. No lightning was observed and no thunder was heard.
7/31/2020 7:00 AM 0.00 0.0 M 0.0 M
8/1/2020 7:00 AM 0.00 0.0 M 0.0 M
8/2/2020 7:00 AM 0.00 0.0 M 0.0 M
8/3/2020 7:00 AM 0.00 0.0 M 0.0 M
8/4/2020 7:00 AM 0.00 0.0 M 0.0 M
8/5/2020 7:00 AM 0.00 0.0 M 0.0 M
8/6/2020 7:00 AM 0.00 0.0 M 0.0 M
8/7/2020 7:00 AM 0.00 0.0 M 0.0 M
8/8/2020 7:00 AM 0.00 0.0 M 0.0 M
8/9/2020 7:00 AM 0.00 0.0 M 0.0 M
8/10/2020 7:00 AM 0.00 0.0 M 0.0 M
8/11/2020 7:00 AM 0.00 0.0 M 0.0 M
8/12/2020 7:00 AM 0.00 0.0 M 0.0 M
8/13/2020 7:00 AM 0.00 0.0 M 0.0 M
8/14/2020 7:00 AM 0.00 0.0 M 0.0 M
8/15/2020 7:00 AM 0.00 0.0 M 0.0 M
8/16/2020 7:00 AM 0.00 0.0 M 0.0 M
8/17/2020 7:00 AM 0.00 0.0 M 0.0 M
8/18/2020 7:00 AM 0.00 0.0 M 0.0 M
8/19/2020 7:00 AM 0.00 0.0 M 0.0 M
8/20/2020 7:00 AM 0.00 0.0 M 0.0 M
8/21/2020 7:00 AM 0.00 0.0 M 0.0 M
8/22/2020 7:00 AM 0.00 0.0 M 0.0 M
8/23/2020 7:00 AM 0.00 0.0 M 0.0 M
8/24/2020 7:00 AM 0.00 0.0 M 0.0 M
8/25/2020 7:00 AM 0.00 0.0 M 0.0 M
8/30/2020 7:00 AM 0.03 M M M M Light rainfall on the edge of a passing thunderstorm occurred at my location yesterday afternoon. The obviously heavier rainfall stayed to the west and north of my location.
9/5/2020 7:00 AM 0.00 0.0 M 0.0 M
9/6/2020 7:00 AM 0.00 0.0 M 0.0 M
9/21/2020 7:00 AM 0.00 0.0 M 0.0 M
9/22/2020 7:00 AM 0.00 0.0 M 0.0 M
9/23/2020 7:00 AM T 0.0 M 0.0 M Several very light rain showers occurred at my location during the late morning and afternoon hours.
9/24/2020 7:00 AM 0.00 0.0 M 0.0 M
9/25/2020 7:00 AM 0.00 0.0 M 0.0 M
9/26/2020 7:00 AM 0.00 0.0 M 0.0 M
9/27/2020 7:00 AM 0.00 0.0 M 0.0 M
9/28/2020 7:00 AM 0.00 0.0 M 0.0 M
9/29/2020 7:00 AM 0.00 0.0 M 0.0 M
9/30/2020 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
9/28/2019 10/01/2019 7:00 AM 4 0.02 0.0 M
12/12/2019 12/14/2019 7:00 AM 3 0.03 M M The funnel and inner tube were left in place during the days away from the observation site due to the anticipation of mostly liquid precipitation.
12/27/2019 12/29/2019 7:00 AM 3 0.09 0.3 0.06
2/9/2020 2/10/2020 10:30 AM 2 0.02 T M
6/27/2020 6/29/2020 7:00 AM 3 0.03 M M
8/26/2020 8/29/2020 7:00 AM 4 0.02 M M
8/31/2020 9/04/2020 7:00 AM 5 0.06 M M
9/8/2020 9/20/2020 7:00 AM 13 1.03 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
3/27/2020 3:28 PM 3/8" 1/4" Pea Size 1/4" Pea Size Soft 6 1min no damage Continuous False After rain After smaller hail 0 0.5