Station Overview Station Location
Station Number CO-AM-10 Latitude 37.65175
Station Name Great Sand Dunes 7.0 SSW Longitude -105.57938
County Alamosa Elevation (ft) 7890



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 0.83 0.14 31 0.13 22 0.01 9 2 2 1 0.0 0 0
Nov 19 0.39 0.41 30 0.41 30 0.00 0 0 6 2 0.8 2 4
Dec 19 0.34 0.57 31 0.57 31 0.00 0 0 6 3 7.7 5 16
Jan 20 0.37 0.23 31 0.23 31 0.00 0 0 4 3 2.5 4 30
Feb 20 0.37 0.06 29 0.06 29 0.00 0 0 1 3 0.5 1 12
March 20 0.79 0.33 31 0.33 31 0.00 0 0 5 3 1.5 3 0
April 20 0.97 0.09 30 0.09 30 0.00 0 0 3 1 0.0 0 0
May 20 0.97 0.25 31 0.25 31 0.00 0 0 4 0 0.0 0 0
June 20 1.17 0.93 30 0.93 30 0.00 0 0 8 1 0.0 0 0
July 20 1.45 2.18 31 2.18 31 0.00 0 0 13 2 0.0 0 0
Aug 20 1.94 0.47 31 0.47 31 0.00 0 0 9 2 0.0 0 0
Sept 20 1.50 0.70 30 0.14 25 0.56 5 1 2 0 0.0 0 0
Water Year Totals: 11.09" 6.36" 366 days 5.79" 352 0.57" 14 days 3 63 days 21 days 13.0" 15 days 62 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 **
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 0.00
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 **
10/17/2019 **
10/18/2019 **
10/19/2019 **
10/20/2019 **
10/21/2019 **
10/22/2019 0.01
10/23/2019 0.00
10/24/2019 0.00
10/25/2019 T
10/26/2019 0.00
10/27/2019 0.00
10/28/2019 0.00
10/29/2019 0.10
10/30/2019 0.03
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 0.00
11/21/2019 T
11/22/2019 0.06
11/23/2019 0.03
11/24/2019 0.00
11/25/2019 0.00
11/26/2019 0.02
11/27/2019 T
11/28/2019 0.09
11/29/2019 0.14
11/30/2019 0.07
12/1/2019 0.00
12/2/2019 0.00
12/3/2019 0.00
12/4/2019 0.00
12/5/2019 T
12/6/2019 0.00
12/7/2019 0.00
12/8/2019 0.00
12/9/2019 0.02
12/10/2019 0.00
12/11/2019 0.00
12/12/2019 0.00
12/13/2019 0.00
12/14/2019 T
12/15/2019 0.07
12/16/2019 0.09
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 0.06
12/26/2019 0.00
12/27/2019 T
12/28/2019 0.28
12/29/2019 0.05
12/30/2019 0.00
12/31/2019 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.00
1/2/2020 0.00
1/3/2020 0.01
1/4/2020 0.00
1/5/2020 0.00
1/6/2020 0.00
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 0.10
1/18/2020 0.00
1/19/2020 0.00
1/20/2020 0.00
1/21/2020 0.00
1/22/2020 0.06
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 0.00
1/26/2020 0.00
1/27/2020 0.00
1/28/2020 0.06
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 0.00
2/1/2020 0.00
2/2/2020 0.00
2/3/2020 0.00
2/4/2020 T
2/5/2020 T
2/6/2020 0.00
2/7/2020 0.00
2/8/2020 0.00
2/9/2020 0.00
2/10/2020 0.00
2/11/2020 0.06
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 T
2/24/2020 0.00
2/25/2020 0.00
2/26/2020 0.00
2/27/2020 0.00
2/28/2020 0.00
2/29/2020 0.00
3/1/2020 0.00
3/2/2020 0.00
3/3/2020 0.00
3/4/2020 0.00
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 T
3/13/2020 0.05
3/14/2020 0.16
3/15/2020 0.00
3/16/2020 0.00
3/17/2020 0.00
3/18/2020 0.00
3/19/2020 0.02
3/20/2020 0.06
3/21/2020 0.00
3/22/2020 0.04
3/23/2020 0.00
3/24/2020 0.00
3/25/2020 0.00
3/26/2020 0.00
3/27/2020 0.00
3/28/2020 T
3/29/2020 0.00
3/30/2020 0.00
3/31/2020 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020 0.00
4/3/2020 T
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 0.00
4/11/2020 0.00
4/12/2020 0.00
4/13/2020 0.00
4/14/2020 0.00
4/15/2020 0.00
4/16/2020 0.00
4/17/2020 0.00
4/18/2020 0.00
4/19/2020 0.00
4/20/2020 0.00
4/21/2020 0.04
4/22/2020 0.02
4/23/2020 0.00
4/24/2020 0.03
4/25/2020 0.00
4/26/2020 0.00
4/27/2020 0.00
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 0.00
5/12/2020 0.13
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.00
5/16/2020 0.00
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 0.03
5/29/2020 0.07
5/30/2020 0.00
5/31/2020 0.02
6/1/2020 0.08
6/2/2020 0.46
6/3/2020 0.02
6/4/2020 0.00
6/5/2020 0.00
6/6/2020 0.04
6/7/2020 0.16
6/8/2020 0.00
6/9/2020 0.07
6/10/2020 0.00
6/11/2020 0.00
6/12/2020 0.00
6/13/2020 0.00
6/14/2020 0.07
6/15/2020 T
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 0.00
6/27/2020 0.00
6/28/2020 0.03
6/29/2020 0.00
6/30/2020 0.00
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 0.01
7/6/2020 0.41
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 0.00
7/14/2020 0.04
7/15/2020 0.03
7/16/2020 0.02
7/17/2020 0.06
7/18/2020 T
7/19/2020 0.68
7/20/2020 0.04
7/21/2020 0.00
7/22/2020 0.00
7/23/2020 0.18
7/24/2020 0.00
7/25/2020 0.12
7/26/2020 0.20
7/27/2020 0.35
7/28/2020 0.04
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 0.02
8/4/2020 0.01
8/5/2020 T
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 0.02
8/17/2020 0.00
8/18/2020 0.00
8/19/2020 0.03
8/20/2020 0.00
8/21/2020 0.00
8/22/2020 0.00
8/23/2020 0.06
8/24/2020 0.00
8/25/2020 0.00
8/26/2020 0.01
8/27/2020 0.07
8/28/2020 0.00
8/29/2020 0.16
8/30/2020 0.09
8/31/2020 T
9/1/2020 0.06
9/2/2020 0.08
9/3/2020 0.00
9/4/2020 0.00
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 0.56
9/12/2020 0.00
9/13/2020 0.00
9/14/2020 0.00
9/15/2020 0.00
9/16/2020 0.00
9/17/2020 0.00
9/18/2020 0.00
9/19/2020 0.00
9/20/2020 0.00
9/21/2020 0.00
9/22/2020 0.00
9/23/2020 0.00
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
10/3/2019 7:00 AM 0.00 0.0 M M M
10/4/2019 7:00 AM 0.00 0.0 M M M
10/5/2019 7:00 AM 0.00 0.0 M M M
10/6/2019 7:00 AM 0.00 0.0 M M M
10/7/2019 7:00 AM 0.00 0.0 M M M
10/8/2019 7:00 AM 0.00 0.0 M M M
10/9/2019 7:00 AM 0.00 0.0 M M M
10/10/2019 7:00 AM 0.00 0.0 M M M
10/11/2019 7:00 AM 0.00 0.0 M M M
10/12/2019 7:00 AM 0.00 0.0 M M M
10/13/2019 7:00 AM 0.00 0.0 M M M
10/14/2019 7:00 AM 0.00 0.0 M M M
10/15/2019 7:00 AM 0.00 0.0 M M M
10/23/2019 7:00 AM 0.00 0.0 M M M
10/24/2019 7:00 AM 0.00 0.0 M M M
10/25/2019 7:00 AM T T M T M Near blizzard conditions for a short time just after dawn -- but little snow accumulation.
10/26/2019 7:00 AM 0.00 0.0 M M M
10/27/2019 7:00 AM 0.00 0.0 M M M
10/28/2019 7:00 AM 0.00 0.0 M M M
10/29/2019 7:00 AM 0.10 T M T M Snow off and on through morning, clearing in afternoon. Ground heat melting snow as it fell. Trace of snow with accumulation up to 1/2in in shaded areas.
10/30/2019 7:00 AM 0.03 T M T M Ground heat still melting snow in non-shaded areas. Snow accumulating in shade.
10/31/2019 7:00 AM 0.00 0.0 M M M
11/1/2019 7:00 AM 0.00 0.0 M M M
11/2/2019 7:00 AM 0.00 0.0 M M M
11/3/2019 7:00 AM 0.00 0.0 M M M
11/4/2019 7:00 AM 0.00 0.0 M M M
11/5/2019 7:00 AM 0.00 0.0 M M M
11/6/2019 7:00 AM 0.00 0.0 M M M
11/7/2019 7:00 AM 0.00 0.0 M M M
11/8/2019 7:00 AM 0.00 0.0 M M M
11/9/2019 7:00 AM 0.00 0.0 M M M
11/10/2019 7:00 AM 0.00 0.0 M M M
11/11/2019 7:00 AM 0.00 0.0 M M M
11/12/2019 7:00 AM 0.00 0.0 M M M Cold! 12F
11/13/2019 7:00 AM 0.00 0.0 M M M
11/14/2019 7:00 AM 0.00 0.0 M M M
11/15/2019 7:00 AM 0.00 0.0 M M M
11/16/2019 7:00 AM 0.00 0.0 M M M
11/17/2019 7:00 AM 0.00 0.0 M M M
11/18/2019 7:00 AM 0.00 0.0 M M M
11/19/2019 7:00 AM 0.00 0.0 M M M
11/20/2019 7:00 AM 0.00 0.0 M M M Skiff of fresh snow on Sangres (east of station) down to about 10,000 ft.
11/21/2019 7:00 AM T M M M M Skiff of snow on Sangres down to 10,000 ft.
11/22/2019 7:00 AM 0.06 T M T M Skiff of snow on ground. Mtns are cloud covered. Flaking at 7 am.
11/23/2019 7:00 AM 0.03 0.0 M 0.0 M No snow accumulation, even in shaded areas.
11/24/2019 7:00 AM 0.00 0.0 M M M
11/25/2019 7:00 AM 0.00 0.0 M M M
11/26/2019 7:00 AM 0.02 0.3 M 0.3 M Snow started about 06:30. Snowing heavily at 07:00.
11/27/2019 7:00 AM T T M 0.2 M Snow stopped shortly after 07:00.
11/28/2019 7:00 AM 0.09 0.5 M 0.5 M Snow overnight
11/29/2019 7:00 AM 0.14 T M 0.5 M Snowing with maybe 2" accumulation about 05:00. Raining and 37F at 07:00 with new snow mostly melted. Warm rain melting ground accumulation at 07:45.
11/30/2019 7:00 AM 0.07 0.0 M T M Mixed rain & snow squalls in am, clearing in pm. Warm rain melted most of snow on ground. A little snow only in shaded areas.
12/1/2019 7:00 AM 0.00 0.0 M T M
12/2/2019 7:00 AM 0.00 0.0 M T M
12/3/2019 7:00 AM 0.00 0.0 M T M
12/4/2019 7:00 AM 0.00 0.0 M T M
12/5/2019 7:00 AM T T M T M
12/6/2019 7:00 AM 0.00 0.0 M T M
12/7/2019 7:00 AM 0.00 0.0 M M M
12/8/2019 7:00 AM 0.00 0.0 M T M Trace of snow only in deeply shaded areas.
12/9/2019 7:00 AM 0.02 0.0 M T M Snow squall about 07:15 to 07:30 -- a few flakes off and on for an hour. Temps 35 - 40F. New snow didn't last long. Snow on ground mostly in deeply shaded areas.
12/10/2019 7:00 AM 0.00 0.0 M T M
12/11/2019 7:00 AM 0.00 0.0 M T M
12/12/2019 7:00 AM 0.00 0.0 M T M
12/13/2019 7:00 AM 0.00 0.0 M T M
12/14/2019 7:00 AM T 0.0 M T M
12/15/2019 7:00 AM 0.07 1.4 M 1.5 M Snow overnight
12/16/2019 7:00 AM 0.09 1.5 M 2.5 M More snow overnight. Cold this am - 14F - snow crunches & squeeks.
12/17/2019 7:00 AM 0.00 0.0 M 2.0 M Clear & Cold. -17F.
12/18/2019 7:00 AM 0.00 0.0 M 1.5 M
12/19/2019 7:00 AM 0.00 0.0 M 1.5 M Clear & cold. -4F
12/20/2019 7:00 AM 0.00 0.0 M 1.5 M
12/21/2019 7:00 AM 0.00 0.0 M 1.0 M
12/22/2019 7:00 AM 0.00 0.0 M 1.0 M
12/23/2019 7:00 AM 0.00 0.0 M 1.0 M
12/24/2019 7:00 AM 0.00 0.0 M 1.0 M Mostly overcast w/high clouds. 16F
12/25/2019 7:00 AM 0.06 1.0 M 2.0 M White Christmas! One inch of new snow overnight fell after dark but was mostly done by observation time -- 9:30/21:30 -- dog walking & walk clearing time.
12/26/2019 7:00 AM 0.00 0.0 M M M
12/27/2019 7:00 AM T T M 2.0 M
12/28/2019 7:00 AM 0.28 3.5 M 5.0 M
12/29/2019 7:00 AM 0.05 0.3 M 5.0 M
12/30/2019 7:00 AM 0.00 0.0 M 5.0 M
12/31/2019 7:00 AM 0.00 0.0 M 5.0 M Clear & cold! -13F
1/1/2020 7:00 AM 0.00 0.0 M 5.0 M
1/2/2020 7:00 AM 0.00 0.0 M 5.0 M Heavy overcast. +4F.
1/3/2020 7:00 AM 0.01 0.1 M 5.0 M
1/4/2020 7:00 AM 0.00 0.0 M 5.0 M
1/5/2020 7:00 AM 0.00 0.0 M 4.5 M
1/6/2020 7:00 AM 0.00 0.0 M 4.5 M Clear sky. +13F
1/7/2020 7:00 AM 0.00 0.0 M 4.5 M
1/8/2020 7:00 AM 0.00 0.0 M 4.0 M
1/9/2020 7:00 AM 0.00 0.0 M 4.0 M
1/10/2020 7:00 AM T T M 4.0 M Dusting of new powdered sugar snow.
1/11/2020 7:00 AM 0.00 0.0 M 4.0 M Clear & cold. -2F
1/12/2020 7:00 AM T T M 4.0 M Snowing -- powdered sugar sprinkles.
1/13/2020 7:00 AM T T M 4.0 M Snowing powdered sugar sprinkles at 7am yesterday. Stopped by 8am.
1/14/2020 7:00 AM 0.00 0.0 M 4.0 M
1/15/2020 7:00 AM 0.00 0.0 M 3.5 M Warmer temps, winds and sunshine melting snow on ground.
1/16/2020 7:00 AM 0.00 0.0 M 3.5 M
1/17/2020 7:00 AM 0.10 1.0 M 4.5 M
1/18/2020 7:00 AM 0.00 0.0 M 4.0 M
1/19/2020 7:00 AM 0.00 0.0 M 3.5 M
1/20/2020 7:00 AM 0.00 0.0 M 3.0 M Clear & cold. 4F.
1/21/2020 7:00 AM 0.00 0.0 M 3.0 M
1/22/2020 7:00 AM 0.06 0.6 M 3.5 M Light fluffy snow overnight.
1/23/2020 7:00 AM 0.00 0.0 M 3.0 M
1/24/2020 7:00 AM 0.00 0.0 M 3.0 M
1/25/2020 7:00 AM 0.00 0.0 M 3.0 M
1/26/2020 7:00 AM 0.00 0.0 M 3.0 M
1/27/2020 7:00 AM 0.00 0.0 M M M
1/28/2020 7:00 AM 0.06 0.8 M 3.0 M Clear & Cold! 7F. Swept fluffy snow off walk with broom.
1/29/2020 7:00 AM 0.00 0.0 M 3.0 M
1/30/2020 7:00 AM 0.00 0.0 M 3.0 M
1/31/2020 7:00 AM 0.00 0.0 M 3.0 M
2/1/2020 7:00 AM 0.00 0.0 M 2.5 M
2/2/2020 7:00 AM 0.00 0.0 M 2.0 M Wow! 2020 High Temp of 50F! Patches of bare ground making avg snow depth harder to estimate. Current clear sky & 10F.
2/3/2020 7:00 AM 0.00 0.0 M 1.5 M Warm & windy overnight to now. Temps above freezing all or most of night.
2/4/2020 7:00 AM T T M 1.5 M Dusting of snow. A few flakes at reading time.
2/5/2020 7:00 AM T T M 1.5 M ZERO!
2/6/2020 7:00 AM 0.00 0.0 M 1.5 M
2/7/2020 7:00 AM 0.00 0.0 M 1.5 M
2/8/2020 7:00 AM 0.00 0.0 M 1.5 M
2/9/2020 7:00 AM 0.00 0.0 M 1.0 M
2/10/2020 7:00 AM 0.00 0.0 M 0.5 M Warm temps & breezes have melted much of the snow pack over the past fee days.
2/11/2020 7:00 AM 0.06 0.5 M 0.5 M Still flaking
2/12/2020 7:00 AM 0.00 0.0 M 0.5 M
2/13/2020 7:00 AM 0.00 0.0 M T M Still snow in shaded areas but open areas are mostly bare.
2/14/2020 7:00 AM 0.00 0.0 M T M
2/15/2020 7:00 AM 0.00 0.0 M T M
2/16/2020 7:00 AM 0.00 0.0 M T M
2/17/2020 7:00 AM 0.00 0.0 M T M
2/18/2020 7:00 AM 0.00 0.0 M T M
2/19/2020 7:00 AM 0.00 0.0 M T M
2/20/2020 7:00 AM 0.00 0.0 M T M
2/21/2020 7:00 AM 0.00 0.0 M T M
2/22/2020 7:00 AM 0.00 0.0 M T M
2/23/2020 7:00 AM T 0.0 M T M Rain after 8 pm. Temps above freezing.
2/24/2020 7:00 AM 0.00 0.0 M T M
2/25/2020 7:00 AM 0.00 0.0 M T M Overcast. Cold 7F.
2/26/2020 7:00 AM 0.00 0.0 M T M
2/27/2020 7:00 AM 0.00 0.0 M T M
2/28/2020 7:00 AM 0.00 0.0 M T M
2/29/2020 7:00 AM 0.00 0.0 M T M Warm weather has reduced the snowpack to deeply shaded areas.
3/1/2020 7:00 AM 0.00 0.0 M T M
3/2/2020 7:00 AM 0.00 0.0 M T M
3/3/2020 7:00 AM 0.00 0.0 M T M
3/4/2020 7:00 AM 0.00 0.0 M T M
3/5/2020 7:00 AM 0.00 0.0 M T M Snow on ground limited to full-time shaded areas.
3/6/2020 7:00 AM 0.00 0.0 M M M
3/7/2020 7:00 AM 0.00 0.0 M T M
3/8/2020 7:00 AM 0.00 0.0 M T M Warm overnight -- probably did not drop to freezing for the past couple of nights.
3/9/2020 7:00 AM T T M T M Precip overnight.
3/10/2020 7:00 AM 0.00 0.0 M T M
3/11/2020 7:00 AM 0.00 0.0 M T M
3/12/2020 7:00 AM T M M T M Sprinkles in mid-afternoon.
3/13/2020 7:00 AM 0.05 M M T M Early morning rain. Still a few spots of snow under the trees. 1st measurable precip in 50 days - since Jan 22nd.
3/14/2020 7:00 AM 0.16 M M T M
3/15/2020 7:00 AM 0.00 0.0 M T M
3/16/2020 7:00 AM 0.00 0.0 M 0.0 M That last patch of snow back under the trees gave up!
3/17/2020 7:00 AM 0.00 0.0 M M M
3/18/2020 7:00 AM 0.00 0.0 M M M
3/19/2020 7:00 AM 0.02 0.1 M T M
3/20/2020 7:00 AM 0.06 1.2 M T M Ground heat melted much of the snow before reading/measurement time
3/21/2020 7:00 AM 0.00 0.0 M 0.0 M
3/22/2020 7:00 AM 0.04 0.2 M T M Overnight precip
3/23/2020 7:00 AM 0.00 0.0 M 0.0 M
3/24/2020 7:00 AM 0.00 0.0 M M M
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 M M
3/27/2020 7:00 AM 0.00 0.0 M M M
3/28/2020 7:00 AM T 0.0 M 0.0 M Misty rain/snow observed about 11 pm. Clouds obscuring mountain tops. No indication of new high elevation snow.
3/29/2020 7:00 AM 0.00 0.0 M M M
3/30/2020 7:00 AM 0.00 0.0 M M M
3/31/2020 7:00 AM 0.00 0.0 M M M
4/1/2020 7:00 AM 0.00 0.0 M M M
4/2/2020 7:00 AM 0.00 0.0 M M M
4/3/2020 7:00 AM T T M T M Trace of snow overnight. Current temp 32F.
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 M M
4/6/2020 7:00 AM 0.00 0.0 M M M
4/7/2020 7:00 AM 0.00 0.0 M M M
4/8/2020 7:00 AM 0.00 0.0 M M M
4/9/2020 7:00 AM 0.00 0.0 M M M
4/10/2020 7:00 AM 0.00 0.0 M M M
4/11/2020 7:00 AM 0.00 0.0 M M M
4/12/2020 7:00 AM 0.00 0.0 M M M
4/13/2020 7:00 AM 0.00 0.0 M M M Skiff of snow above timberline on local Sangres.
4/14/2020 7:00 AM 0.00 0.0 M M M
4/15/2020 7:00 AM 0.00 0.0 M M M
4/16/2020 7:00 AM 0.00 0.0 M M M
4/17/2020 7:00 AM 0.00 0.0 M M M
4/18/2020 7:00 AM 0.00 0.0 M M M
4/19/2020 7:00 AM 0.00 0.0 M M M
4/20/2020 7:00 AM 0.00 0.0 M M M
4/21/2020 7:00 AM 0.04 0.0 M 0.0 M Slushy drops ~5 am. Sprinkling at 7 am.
4/22/2020 7:00 AM 0.02 M M M M
4/23/2020 7:00 AM 0.00 0.0 M M M
4/24/2020 7:00 AM 0.03 M M M M
4/25/2020 7:00 AM 0.00 0.0 M M M
4/26/2020 7:00 AM 0.00 0.0 M M M
4/27/2020 7:00 AM 0.00 0.0 M M M
4/28/2020 7:00 AM 0.00 0.0 M M M
4/29/2020 7:00 AM 0.00 0.0 M M M
4/30/2020 7:00 AM 0.00 0.0 M M M Total Precip for April: 0.09 inches! (Total precip for 1st Quarter of year: 0.7 inches!) Extremely dry conditions; Condition Monitoring Report submitted -- Severely Dry.
5/1/2020 7:00 AM 0.00 0.0 M M M
5/2/2020 7:00 AM 0.00 0.0 M M M
5/3/2020 7:00 AM 0.00 0.0 M M M
5/4/2020 7:00 AM 0.00 0.0 M M M
5/5/2020 7:00 AM 0.00 0.0 M M M
5/6/2020 7:00 AM 0.00 0.0 M M M
5/7/2020 7:00 AM 0.00 0.0 M M M
5/8/2020 7:00 AM 0.00 0.0 M M M
5/9/2020 7:00 AM 0.00 0.0 M M M
5/10/2020 7:00 AM 0.00 0.0 M M M
5/11/2020 7:00 AM 0.00 0.0 M M M
5/12/2020 7:00 AM 0.13 M M M M Internet out on the only day in months with a "big" precip event! RLS 05/13
5/13/2020 7:00 AM 0.00 0.0 M M M Good to have internet back up!
5/14/2020 7:00 AM 0.00 0.0 M M M
5/15/2020 7:00 AM 0.00 0.0 M M M
5/16/2020 7:00 AM 0.00 0.0 M M M
5/17/2020 7:00 AM 0.00 0.0 M M M
5/18/2020 7:00 AM 0.00 0.0 M M M
5/19/2020 7:00 AM 0.00 0.0 M M M
5/20/2020 7:00 AM 0.00 0.0 M M M
5/21/2020 7:00 AM 0.00 0.0 M M M
5/22/2020 7:00 AM 0.00 0.0 M M M
5/23/2020 7:00 AM 0.00 0.0 M M M
5/24/2020 7:00 AM 0.00 0.0 M M M
5/25/2020 7:00 AM 0.00 0.0 M M M Skiff of snow on top of Sangres to the east of station. No indication of a trace.
5/26/2020 7:00 AM 0.00 0.0 M M M
5/27/2020 7:00 AM 0.00 0.0 M M M
5/28/2020 7:00 AM 0.03 M M M M Precip after dark.
5/29/2020 7:00 AM 0.07 M M M M Heavy downpour about 1 mile E (uphill) around 6:30 pm.
5/30/2020 7:00 AM 0.00 0.0 M M M
5/31/2020 7:00 AM 0.02 M M M M
6/1/2020 7:00 AM 0.08 M M M M Some in afternoon, some overnight.
6/2/2020 7:00 AM 0.46 M M M M Wow! Didn't think we were allowed more than 1/10! Mostly gentle soaking rain. Impressive Thunder in afternoon -- apparently mostly in-cloud lightning. Report of hail on CO150 ~MP 9 about 4:30 pm making road slick.
6/3/2020 7:00 AM 0.02 M M M M
6/4/2020 7:00 AM 0.00 0.0 M M M
6/5/2020 7:00 AM 0.00 0.0 M M M
6/6/2020 7:00 AM 0.04 M M M M Currently light rain
6/7/2020 7:00 AM 0.16 M M M M Light rain most of morning into the afternoon. A few small (1/4 in) hail pellets about 1 pm.
6/8/2020 7:00 AM 0.00 0.0 M M M
6/9/2020 7:00 AM 0.07 0.0 M 0.0 M Snow only precipitation accumulated in funnel. Bottom of measuring tube dry! Snowing at 5:30 am, over by 6:30.
6/10/2020 7:00 AM 0.00 0.0 M M M
6/11/2020 7:00 AM 0.00 0.0 M M M
6/12/2020 7:00 AM 0.00 0.0 M M M
6/13/2020 7:00 AM 0.00 0.0 M M M
6/14/2020 7:00 AM 0.07 M M M M
6/15/2020 7:00 AM T M M M M Sprinkles in the afternoon. Measuring tube dry.
6/16/2020 7:00 AM 0.00 0.0 M M M
6/17/2020 7:00 AM 0.00 0.0 M M M
6/18/2020 7:00 AM 0.00 0.0 M M M
6/19/2020 7:00 AM 0.00 0.0 M M M
6/20/2020 7:00 AM 0.00 0.0 M M M
6/21/2020 7:00 AM 0.00 0.0 M M M
6/22/2020 7:00 AM 0.00 0.0 M M M
6/23/2020 7:00 AM 0.00 0.0 M M M
6/24/2020 7:00 AM 0.00 0.0 M M M
6/25/2020 7:00 AM 0.00 0.0 M M M
6/26/2020 7:00 AM 0.00 0.0 M M M
6/27/2020 7:00 AM 0.00 0.0 M M M
6/28/2020 7:00 AM 0.03 M M M M Large drops, short duration. Enough to settle the dust...
6/29/2020 7:00 AM 0.00 0.0 M M M
6/30/2020 7:00 AM 0.00 0.0 M M M
7/1/2020 7:00 AM 0.00 0.0 M M M
7/2/2020 7:00 AM 0.00 0.0 M M M
7/3/2020 7:00 AM 0.00 0.0 M M M
7/4/2020 7:00 AM 0.00 0.0 M M M
7/5/2020 7:00 AM 0.01 M M M M Brief afternoon shower around 4 pm.
7/6/2020 7:00 AM 0.41 M M M M Mid afternoon thundershower.
7/7/2020 7:00 AM 0.00 0.0 M M M
7/8/2020 7:00 AM 0.00 0.0 M M M
7/9/2020 7:00 AM 0.00 0.0 M M M
7/10/2020 7:00 AM 0.00 0.0 M M M
7/11/2020 7:00 AM 0.00 0.0 M M M
7/12/2020 7:00 AM 0.00 0.0 M M M
7/13/2020 7:00 AM 0.00 0.0 M M M
7/14/2020 7:00 AM 0.04 M M M M
7/15/2020 7:00 AM 0.03 M M M M
7/16/2020 7:00 AM 0.02 M M M M Rain woke me about 11:30. Didn't last long.
7/17/2020 7:00 AM 0.06 M M M M
7/18/2020 7:00 AM T M M M M Spitting about 7:30 pm. Indication of a little more overnight.
7/19/2020 7:00 AM 0.68 M M M M First significant precipitation event of the year! Heavy but not extreme rain, mostly a soaking rain. Minor sheet wash flooding.
7/20/2020 7:00 AM 0.04 M M M M
7/21/2020 7:00 AM 0.00 0.0 M M M
7/22/2020 7:00 AM 0.00 0.0 M M M
7/23/2020 7:00 AM 0.18 M M M M
7/24/2020 7:00 AM 0.00 0.0 M M M
7/25/2020 7:00 AM 0.12 M M M M T-shower front, then prolonged light rain, started about sunset.
7/26/2020 7:00 AM 0.20 M M M M Rain starting after dark for much of night.
7/27/2020 7:00 AM 0.35 M M M M Rain much of the night.
7/28/2020 7:00 AM 0.04 M M M M
7/29/2020 7:00 AM 0.00 0.0 M M M
7/30/2020 7:00 AM T M M M M Late afternoon sprinkles. Just enough to mess up the dust on the windshield.
7/31/2020 7:00 AM 0.00 0.0 M M M
8/1/2020 7:00 AM 0.00 0.0 M M M
8/2/2020 7:00 AM 0.00 0.0 M M M
8/3/2020 7:00 AM 0.02 M M M M Rain sometime after dark and before 10 pm.
8/4/2020 7:00 AM 0.01 M M M M
8/5/2020 7:00 AM T M M M M Early evening sprinkles.
8/6/2020 7:00 AM 0.00 0.0 M M M
8/7/2020 7:00 AM 0.00 0.0 M M M
8/8/2020 7:00 AM 0.00 0.0 M M M
8/9/2020 7:00 AM 0.00 0.0 M M M
8/10/2020 7:00 AM 0.00 0.0 M M M
8/11/2020 7:00 AM 0.00 0.0 M M M
8/12/2020 7:00 AM 0.00 0.0 M M M
8/13/2020 7:00 AM 0.00 0.0 M M M
8/14/2020 7:00 AM 0.00 0.0 M M M
8/15/2020 7:00 AM 0.00 0.0 M M M
8/16/2020 7:00 AM 0.02 M M M M High winds and hard rain for a few minutes about 9:30 pm.
8/17/2020 7:00 AM 0.00 0.0 M M M
8/18/2020 7:00 AM 0.00 0.0 M M M
8/19/2020 7:00 AM 0.03 M M M M Less than 5 minute shower about 3 pm.
8/20/2020 7:00 AM 0.00 0.0 M M M
8/21/2020 7:00 AM 0.00 0.0 M M M
8/22/2020 7:00 AM 0.00 0.0 M M M
8/23/2020 7:00 AM 0.06 M M M M
8/24/2020 7:00 AM 0.00 0.0 M M M
8/25/2020 7:00 AM 0.00 0.0 M M M
8/26/2020 7:00 AM 0.01 M M M M Sprinkles at 3:30 and again about 8:30.
8/27/2020 7:00 AM 0.07 M M M M Afternoon shower from about 3pm - 3:30 for 0.03". Light rain again from about 6pm for unknown duration.
8/28/2020 7:00 AM 0.00 0.0 M M M
8/29/2020 7:00 AM 0.16 M M M M Soaking rain most of afternoon until after dark.
8/30/2020 7:00 AM 0.09 M M M M One shower in the morning, two in the afternoon.
8/31/2020 7:00 AM T M M M M
9/1/2020 7:00 AM 0.06 M M M M
9/2/2020 7:00 AM 0.08 M M M M Clearing after the rain with clear sky for most of the day.
9/3/2020 7:00 AM 0.00 0.0 M M M
9/4/2020 7:00 AM 0.00 0.0 M M M
9/5/2020 7:00 AM 0.00 0.0 M M M
9/6/2020 7:00 AM 0.00 0.0 M M M
9/12/2020 7:00 AM 0.00 0.0 M M M
9/13/2020 7:00 AM 0.00 0.0 M M M
9/14/2020 7:00 AM 0.00 0.0 M M M
9/15/2020 7:00 AM 0.00 0.0 M M M
9/16/2020 7:00 AM 0.00 0.0 M M M Thick smoke this morning
9/17/2020 7:00 AM 0.00 0.0 M M M Thick smoke.
9/18/2020 7:00 AM 0.00 0.0 M M M Overcast. Less smoke than the past few days.
9/19/2020 7:00 AM 0.00 0.0 M M M Heavy smoky haze. Looks like there may be some cloud cover as well, but only visible from zenith down ~45 degrees due to haze.
9/20/2020 7:00 AM 0.00 0.0 M M M Less Smoky haze than yesterday
9/21/2020 7:00 AM 0.00 0.0 M M M
9/22/2020 7:00 AM 0.00 0.0 M M M Smoky haze still present.
9/23/2020 7:00 AM 0.00 0.0 M M M
9/24/2020 7:00 AM 0.00 0.0 M M M
9/25/2020 7:00 AM 0.00 0.0 M M M
9/26/2020 7:00 AM 0.00 0.0 M M M
9/27/2020 7:00 AM 0.00 0.0 M M M
9/28/2020 7:00 AM 0.00 0.0 M M M
9/29/2020 7:00 AM 0.00 0.0 M M M
9/30/2020 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/25/2019 10/02/2019 7:00 AM 8 0.00 M M
10/16/2019 10/22/2019 7:00 AM 7 0.01 M M
9/7/2020 9/11/2020 6:00 PM 5 0.56 M M All it takes to trigger a significant precip/weather event is for me to leave the area for a few days!



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