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 10 0.83 0.68 31 0.44 24 0.24 7 1 4 2 0.0 0 0
Nov 10 0.39 0.04 30 0.04 30 0.00 0 0 2 3 0.1 1 1
Dec 10 0.34 0.99 31 0.99 31 0.00 0 0 4 1 8.6 3 4
Jan 11 0.37 0.05 31 0.05 28 0.00 3 0 1 2 1.0 1 5
Feb 11 0.37 0.81 28 0.65 21 0.16 7 1 3 0 14.0 2 4
March 11 0.79 0.05 31 0.05 31 0.00 0 0 1 3 0.0 0 0
April 11 0.97 0.58 30 0.58 30 0.00 0 0 7 1 3.0 1 1
May 11 0.97 0.11 31 0.11 31 0.00 0 0 2 6 0.0 0 0
June 11 1.17 0.00 30 0.00 30 0.00 0 0 0 0 0.0 0 0
July 11 1.45 0.98 31 0.98 31 0.00 0 0 8 7 0.0 0 0
Aug 11 1.94 2.06 31 2.06 31 0.00 0 0 10 2 0.0 0 0
Sept 11 1.50 1.17 30 1.17 30 0.00 0 0 11 0 0.0 0 0
Water Year Totals: 11.09" 7.52" 365 days 7.12" 348 0.40" 17 days 2 53 days 27 days 26.7" 8 days 15 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
10/1/2010 0.00
10/2/2010 0.00
10/3/2010 0.00
10/4/2010 0.00
10/5/2010 0.00
10/6/2010 T
10/7/2010 0.00
10/8/2010 0.12
10/9/2010 0.00
10/10/2010 0.00
10/11/2010 0.00
10/12/2010 0.00
10/13/2010 0.00
10/14/2010 0.00
10/15/2010 0.00
10/16/2010 0.00
10/17/2010 0.00
10/18/2010 0.00
10/19/2010 0.04
10/20/2010 0.00
10/21/2010 0.04
10/22/2010 0.24
10/23/2010 T
10/24/2010 **
10/25/2010 **
10/26/2010 **
10/27/2010 **
10/28/2010 **
10/29/2010 **
10/30/2010 0.24
10/31/2010 0.00
11/1/2010 0.00
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.00
11/5/2010 0.00
11/6/2010 0.00
11/7/2010 0.00
11/8/2010 0.00
11/9/2010 0.00
11/10/2010 0.00
11/11/2010 0.00
11/12/2010 0.00
11/13/2010 0.00
11/14/2010 0.00
11/15/2010 0.00
11/16/2010 T
11/17/2010 T
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 0.00
11/22/2010 0.03
11/23/2010 0.00
11/24/2010 0.00
11/25/2010 0.01
11/26/2010 0.00
11/27/2010 0.00
11/28/2010 0.00
11/29/2010 0.00
11/30/2010 T
12/1/2010 0.00
12/2/2010 0.00
12/3/2010 0.00
12/4/2010 0.00
12/5/2010 0.00
12/6/2010 0.00
12/7/2010 0.00
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.00
12/11/2010 0.00
12/12/2010 0.00
12/13/2010 0.00
12/14/2010 0.00
12/15/2010 0.00
12/16/2010 0.00
12/17/2010 0.73
12/18/2010 0.04
12/19/2010 0.00
12/20/2010 0.00
12/21/2010 0.00
12/22/2010 0.00
12/23/2010 T
12/24/2010 0.19
12/25/2010 0.00
12/26/2010 0.00
12/27/2010 0.00
12/28/2010 0.00
12/29/2010 0.00
12/30/2010 0.00
12/31/2010 0.03
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.00
1/2/2011 0.00
1/3/2011 0.00
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 0.00
1/7/2011 0.00
1/8/2011 0.00
1/9/2011 0.00
1/10/2011 0.05
1/11/2011 T
1/12/2011 0.00
1/13/2011 0.00
1/14/2011 0.00
1/15/2011 0.00
1/16/2011 0.00
1/17/2011 0.00
1/18/2011 0.00
1/19/2011 0.00
1/20/2011 T
1/21/2011 0.00
1/22/2011 0.00
1/23/2011 0.00
1/24/2011 0.00
1/25/2011 0.00
1/26/2011 0.00
1/27/2011 0.00
1/28/2011 0.00
1/29/2011 **
1/30/2011 **
1/31/2011 **
2/1/2011 **
2/2/2011 **
2/3/2011 **
2/4/2011 **
2/5/2011 **
2/6/2011 **
2/7/2011 0.16
2/8/2011 0.26
2/9/2011 0.36
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 0.00
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 0.00
2/18/2011 0.00
2/19/2011 0.00
2/20/2011 0.03
2/21/2011 0.00
2/22/2011 0.00
2/23/2011 0.00
2/24/2011 0.00
2/25/2011 0.00
2/26/2011 0.00
2/27/2011 0.00
2/28/2011 0.00
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.00
3/5/2011 T
3/6/2011 0.00
3/7/2011 T
3/8/2011 0.05
3/9/2011 T
3/10/2011 0.00
3/11/2011 0.00
3/12/2011 0.00
3/13/2011 0.00
3/14/2011 0.00
3/15/2011 0.00
3/16/2011 0.00
3/17/2011 0.00
3/18/2011 0.00
3/19/2011 0.00
3/20/2011 0.00
3/21/2011 0.00
3/22/2011 0.00
3/23/2011 0.00
3/24/2011 0.00
3/25/2011 0.00
3/26/2011 0.00
3/27/2011 0.00
3/28/2011 0.00
3/29/2011 0.00
3/30/2011 0.00
3/31/2011 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2011 0.00
4/2/2011 0.00
4/3/2011 0.00
4/4/2011 0.33
4/5/2011 0.00
4/6/2011 0.00
4/7/2011 0.04
4/8/2011 T
4/9/2011 0.00
4/10/2011 0.00
4/11/2011 0.00
4/12/2011 0.00
4/13/2011 0.00
4/14/2011 0.02
4/15/2011 0.00
4/16/2011 0.00
4/17/2011 0.00
4/18/2011 0.00
4/19/2011 0.15
4/20/2011 0.00
4/21/2011 0.00
4/22/2011 0.00
4/23/2011 0.00
4/24/2011 0.00
4/25/2011 0.01
4/26/2011 0.02
4/27/2011 0.01
4/28/2011 0.00
4/29/2011 0.00
4/30/2011 0.00
5/1/2011 T
5/2/2011 T
5/3/2011 T
5/4/2011 0.00
5/5/2011 0.00
5/6/2011 0.00
5/7/2011 0.00
5/8/2011 0.00
5/9/2011 0.00
5/10/2011 0.00
5/11/2011 T
5/12/2011 0.09
5/13/2011 0.00
5/14/2011 0.00
5/15/2011 T
5/16/2011 0.00
5/17/2011 0.00
5/18/2011 0.00
5/19/2011 0.02
5/20/2011 0.00
5/21/2011 T
5/22/2011 0.00
5/23/2011 0.00
5/24/2011 0.00
5/25/2011 0.00
5/26/2011 0.00
5/27/2011 0.00
5/28/2011 0.00
5/29/2011 0.00
5/30/2011 0.00
5/31/2011 0.00
6/1/2011 0.00
6/2/2011 0.00
6/3/2011 0.00
6/4/2011 0.00
6/5/2011 0.00
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 0.00
6/10/2011 0.00
6/11/2011 0.00
6/12/2011 0.00
6/13/2011 0.00
6/14/2011 0.00
6/15/2011 0.00
6/16/2011 0.00
6/17/2011 0.00
6/18/2011 0.00
6/19/2011 0.00
6/20/2011 0.00
6/21/2011 0.00
6/22/2011 0.00
6/23/2011 0.00
6/24/2011 0.00
6/25/2011 0.00
6/26/2011 0.00
6/27/2011 0.00
6/28/2011 0.00
6/29/2011 0.00
6/30/2011 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.00
7/2/2011 0.00
7/3/2011 0.06
7/4/2011 T
7/5/2011 0.00
7/6/2011 0.00
7/7/2011 0.00
7/8/2011 T
7/9/2011 T
7/10/2011 0.00
7/11/2011 0.02
7/12/2011 0.25
7/13/2011 0.02
7/14/2011 T
7/15/2011 0.00
7/16/2011 0.00
7/17/2011 0.00
7/18/2011 0.00
7/19/2011 0.00
7/20/2011 0.00
7/21/2011 0.00
7/22/2011 0.01
7/23/2011 0.00
7/24/2011 0.00
7/25/2011 T
7/26/2011 T
7/27/2011 T
7/28/2011 0.00
7/29/2011 0.49
7/30/2011 0.01
7/31/2011 0.12
8/1/2011 0.00
8/2/2011 0.17
8/3/2011 0.23
8/4/2011 0.00
8/5/2011 0.00
8/6/2011 0.00
8/7/2011 0.00
8/8/2011 0.00
8/9/2011 0.00
8/10/2011 0.00
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 0.00
8/14/2011 0.00
8/15/2011 0.01
8/16/2011 0.00
8/17/2011 0.02
8/18/2011 0.00
8/19/2011 0.00
8/20/2011 0.00
8/21/2011 0.04
8/22/2011 0.41
8/23/2011 0.68
8/24/2011 0.00
8/25/2011 0.01
8/26/2011 T
8/27/2011 0.47
8/28/2011 0.00
8/29/2011 T
8/30/2011 0.02
8/31/2011 0.00
9/1/2011 0.11
9/2/2011 0.03
9/3/2011 0.00
9/4/2011 0.00
9/5/2011 0.00
9/6/2011 0.00
9/7/2011 0.05
9/8/2011 0.02
9/9/2011 0.05
9/10/2011 0.00
9/11/2011 0.03
9/12/2011 0.00
9/13/2011 0.00
9/14/2011 0.26
9/15/2011 0.18
9/16/2011 0.17
9/17/2011 0.09
9/18/2011 0.18
9/19/2011 0.00
9/20/2011 0.00
9/21/2011 0.00
9/22/2011 0.00
9/23/2011 0.00
9/24/2011 0.00
9/25/2011 0.00
9/26/2011 0.00
9/27/2011 0.00
9/28/2011 0.00
9/29/2011 0.00
9/30/2011 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 7:00 AM 0.00 0.0 M M M
10/2/2010 7:00 AM 0.00 0.0 M M M
10/3/2010 7:00 AM 0.00 0.0 M M M
10/4/2010 7:00 AM 0.00 0.0 M M M
10/5/2010 7:00 AM 0.00 0.0 M M M
10/6/2010 7:00 AM T M M M M 42F Partly cloudy. A few sprinkles when the clouds moved in about 5:30p. Not enough to show in the gauge.
10/7/2010 7:00 AM 0.00 0.0 M M M
10/8/2010 7:00 AM 0.12 M M M M 36F Snow down to ~10,000 ft on Sangre's California Peak.
10/9/2010 7:00 AM 0.00 0.0 M M M
10/10/2010 7:00 AM 0.00 0.0 M M M
10/11/2010 7:00 AM 0.00 0.0 M M M
10/12/2010 7:00 AM 0.00 0.0 M M M
10/13/2010 7:00 AM 0.00 0.0 M M M
10/14/2010 7:00 AM 0.00 0.0 M M M
10/15/2010 7:00 AM 0.00 0.0 M M M
10/16/2010 7:00 AM 0.00 0.0 M M M
10/17/2010 7:00 AM 0.00 0.0 M M M
10/18/2010 7:00 AM 0.00 0.0 M M M overcast
10/19/2010 7:00 AM 0.04 M M M M
10/20/2010 7:00 AM 0.00 0.0 M M M
10/21/2010 7:00 AM 0.04 M M M M Overcast & light rain at first light. Still raining.
10/22/2010 7:00 AM 0.24 M M M M Rain overnight - not raining at 7am
10/23/2010 7:00 AM T M M M M
10/31/2010 7:00 AM 0.00 0.0 M M M
11/1/2010 7:00 AM 0.00 0.0 M M M
11/2/2010 7:00 AM 0.00 0.0 M M M
11/3/2010 7:00 AM 0.00 0.0 M M M
11/4/2010 7:00 AM 0.00 0.0 M M M
11/5/2010 7:00 AM 0.00 0.0 M M M
11/6/2010 7:00 AM 0.00 0.0 M M M
11/7/2010 7:00 AM 0.00 0.0 M M M
11/8/2010 7:00 AM 0.00 0.0 M M M
11/9/2010 7:00 AM 0.00 0.0 M M M 26F breezy, partly cloudy.
11/10/2010 7:00 AM 0.00 0.0 M M M 10F mostly clear
11/11/2010 7:00 AM 0.00 0.0 M M M 11F mostly clear
11/12/2010 7:00 AM 0.00 0.0 M M M 7F clear
11/13/2010 7:00 AM 0.00 0.0 M M M
11/14/2010 7:00 AM 0.00 0.0 M M M
11/15/2010 7:00 AM 0.00 0.0 M M M
11/16/2010 7:00 AM T T M T M 10F Intermittent snow flurries in pm.
11/17/2010 7:00 AM T T M T M 10F Overnight snow & sleet squalls
11/18/2010 7:00 AM 0.00 0.0 M M M
11/19/2010 7:00 AM 0.00 0.0 M M M
11/20/2010 7:00 AM 0.00 0.0 M M M
11/21/2010 7:00 AM 0.00 0.0 M M M 24F windy, scattered clouds.
11/22/2010 7:00 AM 0.03 0.1 M 0.1 M 10F mostly clear, calm. Snow overnight.
11/23/2010 7:00 AM 0.00 0.0 M M M 0F clear calm
11/24/2010 7:00 AM 0.00 0.0 M M M 0F mostly clear - SLV cloud ring.
11/25/2010 7:00 AM 0.01 T M T M -4F clear, calm
11/26/2010 7:00 AM 0.00 0.0 M M M
11/27/2010 7:00 AM 0.00 0.0 M T M -4F
11/28/2010 7:00 AM 0.00 0.0 M 0.0 M 17F breezy, scattered high cirrus
11/29/2010 7:00 AM 0.00 0.0 M M M 5F calm, SLV cloud ring.
11/30/2010 7:00 AM T 0.0 M 0.0 M -2F clear,calm. Angels' dandruff a few times yesterday. No accumulation.
12/1/2010 7:00 AM 0.00 0.0 M M M 8F Mostly cloudy, calm
12/2/2010 7:00 AM 0.00 0.0 M M M
12/3/2010 7:00 AM 0.00 0.0 M M M 11F Clouds over San Juans.
12/4/2010 7:00 AM 0.00 0.0 M M M
12/5/2010 7:00 AM 0.00 0.0 M M M 18F Overcast, calm
12/6/2010 7:00 AM 0.00 0.0 M M M 10F clear, calm
12/7/2010 7:00 AM 0.00 0.0 M M M 18F clear, calm
12/8/2010 7:00 AM 0.00 0.0 M M M 3F clear, calm
12/9/2010 7:00 AM 0.00 0.0 M M M 12F partly cloudy, calm
12/10/2010 7:00 AM 0.00 0.0 M M M 254F overcast calm
12/11/2010 7:00 AM 0.00 0.0 M M M 18F high cirrus, breezy
12/12/2010 7:00 AM 0.00 0.0 M M M 17F clear calm
12/13/2010 7:00 AM 0.00 0.0 M M M 12F clear calm
12/14/2010 7:00 AM 0.00 0.0 M M M 8F clear calm
12/15/2010 7:00 AM 0.00 0.0 M M M 29F overcast, breezy
12/16/2010 7:00 AM 0.00 0.0 M M M 17F overcast calm. Our predicted snow storm has been a bust so far.
12/17/2010 7:00 AM 0.73 8.2 0.64 8.0 M 20F still snowing. At 6pm there was 6 inches of new snow measured at 0.4 in precip.
12/18/2010 7:00 AM 0.04 0.3 M 6.0 0.65 10F overcast, ice fog.
12/19/2010 7:00 AM 0.00 0.0 M 6.0 M 17F calm ice fog
12/20/2010 7:00 AM 0.00 0.0 M 2.5 M 28F overcast, windy. Snow depth on ground variable, 2 - 3 in. The clouds finally cleared above the Sangres - California peak is bare! The wind has stripped the snow.
12/21/2010 7:00 AM 0.00 0.0 M T M 28F overcast, windy. Warm winds over the past 36 hours have melted most of the snow - depth 0 to 3 inches (in shady shelter).
12/22/2010 7:00 AM 0.00 0.0 M T M 28F overcast, calm
12/23/2010 7:00 AM T M M T M 27F Breezy, SLV Cloud ring. Rain sprinkles for about twenty minutes around noon.
12/24/2010 7:00 AM 0.19 T M T M 20F mostly clear, calm.
12/25/2010 7:00 AM 0.00 0.0 M T M 18F overcast, calm
12/26/2010 7:00 AM 0.00 0.0 M T M 14F overcast, calm
12/27/2010 7:00 AM 0.00 0.0 M T M 11F clear calm
12/28/2010 7:00 AM 0.00 0.0 M T M 13F general overcast, calm
12/29/2010 7:00 AM 0.00 0.0 M T M 17F mostly cloudy, windy
12/30/2010 7:00 AM 0.00 0.0 M T M 15F cloudy, breezy
12/31/2010 7:00 AM 0.03 0.1 M T M 0F overcast. First windy snow squall yesterday 9:30 am. Numerous squalls & wind throughout day. Skiff of snow w/o wind overnight.
1/1/2011 7:00 AM 0.00 0.0 M T M -11F clear, calm
1/2/2011 7:00 AM 0.00 0.0 M T M -18F Clear calm
1/3/2011 7:00 AM 0.00 0.0 M T M -3F Overcast
1/4/2011 7:00 AM 0.00 0.0 M T M -3F clear calm
1/5/2011 7:00 AM 0.00 0.0 M T M -3° clear calm
1/6/2011 7:00 AM 0.00 0.0 M T M 4F clear calm
1/7/2011 7:00 AM 0.00 0.0 M T M 0F clear calm
1/8/2011 7:00 AM 0.00 0.0 M T M 4F high clouds, calm
1/9/2011 7:00 AM 0.00 0.0 M T M 10F general overcast, calm
1/10/2011 7:00 AM 0.05 1.0 M 1.0 M 6F Snowing powdered-sugar snow.
1/11/2011 7:00 AM T T M 1.0 M -20F clear calm Brrr!
1/12/2011 7:00 AM 0.00 0.0 M 1.0 M -10F high clouds, calm
1/13/2011 7:00 AM 0.00 0.0 M 0.5 M 14F mostly clear, calm
1/14/2011 7:00 AM 0.00 0.0 M T M
1/15/2011 7:00 AM 0.00 0.0 M 0.5 M 10F clear, calm
1/16/2011 7:00 AM 0.00 0.0 M T M 8F partly cloudy w. high clouds, calm
1/17/2011 7:00 AM 0.00 0.0 M T M 14F partly cloudy, calm
1/18/2011 7:00 AM 0.00 0.0 M T M 13F clear, calm
1/19/2011 7:00 AM 0.00 0.0 M T M 12F clear, calm
1/20/2011 7:00 AM T T M T M 4F clear calm.
1/21/2011 7:00 AM 0.00 0.0 M T M
1/22/2011 7:00 AM 0.00 0.0 M T M 9F mostly cloudy, light breeze
1/23/2011 7:00 AM 0.00 0.0 M T M 8F clear calm
1/24/2011 7:00 AM 0.00 0.0 M T M 9F overcast calm
1/25/2011 7:00 AM 0.00 0.0 M T M 8F clear calm
1/26/2011 7:00 AM 0.00 0.0 M T M 2F clear calm
1/27/2011 7:00 AM 0.00 0.0 M T M 1F clear calm
1/28/2011 7:00 AM 0.00 0.0 M T M 6F clear calm
2/8/2011 7:00 AM 0.26 8.0 M 12.0 M
2/9/2011 7:00 AM 0.36 6.0 M 12.0 M -20 Snow almost all day. Dry snow. Unable to report due to internet outage
2/10/2011 7:00 AM 0.00 0.0 M 10.0 M -22F clear calm, cold
2/11/2011 7:00 AM 0.00 0.0 M 8.0 M -10 clear calm
2/12/2011 7:00 AM 0.00 0.0 M M M
2/13/2011 7:00 AM 0.00 0.0 M M M
2/14/2011 7:00 AM 0.00 0.0 M M M
2/15/2011 7:00 AM 0.00 0.0 M M M
2/16/2011 7:00 AM 0.00 0.0 M M M
2/17/2011 7:00 AM 0.00 0.0 M T M 20F Windy
2/18/2011 7:00 AM 0.00 0.0 M M M 20F overcast, breezy
2/19/2011 7:00 AM 0.00 0.0 M T M 26F PC breezy
2/20/2011 7:00 AM 0.03 M M M M 18F mostly clear, light breeze. Rain squalls early afternoon, mixed rain/sleet after dark.
2/21/2011 7:00 AM 0.00 0.0 M M M 10F clear calm
2/22/2011 7:00 AM 0.00 0.0 M T M 19F clear calm
2/23/2011 7:00 AM 0.00 0.0 M T M 16F clear calm
2/24/2011 7:00 AM 0.00 0.0 M T M 18F mostly cloudy, calm
2/25/2011 7:00 AM 0.00 0.0 M T M 18F mostly cloudy, windy
2/26/2011 7:00 AM 0.00 0.0 M T M 18F overcast, windy
2/27/2011 7:00 AM 0.00 0.0 M T M 16F mostly cloudy, calm
2/28/2011 7:00 AM 0.00 0.0 M T M 7F clear,calm
3/1/2011 7:00 AM 0.00 0.0 M T M 10F clear calm
3/2/2011 7:00 AM 0.00 0.0 M T M 14F clear calm
3/3/2011 7:00 AM 0.00 0.0 M T M 16F clear calm. Snow on ground is limited to old drifts in shady areas.
3/4/2011 7:00 AM 0.00 0.0 M T M 26F
3/5/2011 7:00 AM T 0.0 M T M 0F clear calm. A couple of 2 minute light snow showers morning. No accumulation. Some accumulation on mountains.
3/6/2011 7:00 AM 0.00 0.0 M T M 9F high clouds, calm
3/7/2011 7:00 AM T T M T M 16F overcast, light breeze. Late pm snow showers. No measurable accumulation.
3/8/2011 7:00 AM 0.05 T M T M 20F overcast, calm. Near blizzard conditions for ~10 minutes about 5pm - sporadic light snow showers into night.
3/9/2011 7:00 AM T T M T M 14F mostly clear - clouds above the Sangres. Snow showers in am but new snow on ground melted by noon.
3/10/2011 7:00 AM 0.00 0.0 M T M 18F clear calm
3/11/2011 7:00 AM 0.00 0.0 M 0.0 M 22F Snow on ground is gone.
3/12/2011 7:00 AM 0.00 0.0 M M M
3/13/2011 7:00 AM 0.00 0.0 M M M
3/14/2011 7:00 AM 0.00 0.0 M M M
3/15/2011 7:00 AM 0.00 0.0 M 0.0 M 18F clear calm. Sick in bed the past few days. Logged zeros this am.
3/16/2011 7:00 AM 0.00 0.0 M M M 18F clear calm
3/17/2011 7:00 AM 0.00 0.0 M M M 30F Heat wave! Partly cloudy, calm.
3/18/2011 7:00 AM 0.00 0.0 M M M 24F partly cloudy, calm. Windy yesterday.
3/19/2011 7:00 AM 0.00 0.0 M M M 23F overcast windy
3/20/2011 7:00 AM 0.00 0.0 M M M
3/21/2011 7:00 AM 0.00 0.0 M M M 33F mostly cloudy, breezy. High winds yesterday.
3/22/2011 7:00 AM 0.00 0.0 M M M
3/23/2011 7:00 AM 0.00 0.0 M M M 10F clear. light breeze. High winds yesterday. Phone & internet out.
3/24/2011 7:00 AM 0.00 0.0 M M M 26F clear, windy.
3/25/2011 7:00 AM 0.00 0.0 M M M 14F Mostly clear, breezy. High winds predicted. High winds yesterday.
3/26/2011 7:00 AM 0.00 0.0 M M M 15F clear, calm. Strong winds yesterday pm.
3/27/2011 7:00 AM 0.00 0.0 M M M 22F Mostly clear, breezy.
3/28/2011 7:00 AM 0.00 0.0 M M M 26F Mostly clear
3/29/2011 7:00 AM 0.00 0.0 M M M 19F Ptly cloudy, calm. High winds yesterday.
3/30/2011 7:00 AM 0.00 0.0 M M M 20F Partly cloudy, breezy
3/31/2011 7:00 AM 0.00 0.0 M M M 26F Partly cloudy, breezy
4/1/2011 7:00 AM 0.00 0.0 M M M 27F Mostly clear, high cirrus, calm
4/2/2011 7:00 AM 0.00 0.0 M M M 20F Clear calm
4/3/2011 7:00 AM 0.00 0.0 M M M 36F high clouds WINDY
4/4/2011 7:00 AM 0.33 3.0 0.32 3.0 M 4F clear, calm. Snow yesterday very welcome.!
4/5/2011 7:00 AM 0.00 0.0 M T M 16F clear calm
4/6/2011 7:00 AM 0.00 0.0 M 0.0 M 30F clear breezy
4/7/2011 7:00 AM 0.04 T M T M 26F cloudy, calm.
4/8/2011 7:00 AM T 0.0 M 0.0 M 28F Mostly clear, windy. Rain/snow spit off mountain yesterday am.
4/9/2011 7:00 AM 0.00 0.0 M M M 33F overcast windy
4/10/2011 7:00 AM 0.00 0.0 M M M 10F mostly clear, calm
4/11/2011 7:00 AM 0.00 0.0 M M M 11F clear breezy
4/12/2011 7:00 AM 0.00 0.0 M M M 22F clear calm
4/13/2011 7:00 AM 0.00 0.0 M M M 19F clear calm
4/14/2011 7:00 AM 0.02 T M T M 22F overcast calm
4/15/2011 7:00 AM 0.00 0.0 M M M 15F clear calm. High winds yesterday!
4/16/2011 7:00 AM 0.00 0.0 M M M 20F clear calm
4/17/2011 7:00 AM 0.00 0.0 M M M 20F clear calm
4/18/2011 7:00 AM 0.00 0.0 M M M 37F partly cloudy, breeezy
4/19/2011 7:00 AM 0.15 T M T M 27F mostly cloudy, calm. Mixed sleet & rain squall in early morning.
4/20/2011 7:00 AM 0.00 0.0 M M M 25F clear, calm
4/21/2011 7:00 AM 0.00 0.0 M M M 35F high clouds, breezy
4/22/2011 7:00 AM 0.00 0.0 M M M 26F ptly cldy
4/23/2011 7:00 AM 0.00 0.0 M M M 28F overcast calm
4/24/2011 7:00 AM 0.00 0.0 M M M 32F overcast windy. Skiff of snow on Mtns.
4/25/2011 7:00 AM 0.01 M M M M 20F mostly clear sky, fog rising from valley floor. Disappointing precip.
4/26/2011 7:00 AM 0.02 M M M M 22F clear calm. Wow. Double yesterday's precip.
4/27/2011 7:00 AM 0.01 T M T M 12F clear calm. Skiff of snow. Mountains look good!
4/28/2011 7:00 AM 0.00 0.0 M M M 14F clear calm
4/29/2011 7:00 AM 0.00 0.0 M M M 34F clear windy
4/30/2011 7:00 AM 0.00 0.0 M M M 10F clear calm. Terrible wind yesterday.
5/1/2011 7:00 AM T 0.0 M 0.0 M 16F Windy, low clouds, very light horizontal snow, no accumulation.
5/2/2011 7:00 AM T 0.0 M 0.0 M 5F clear, calm
5/3/2011 7:00 AM T 0.0 M 0.0 M 10F cold clear calm. Minor snow fluffies off and on much of day.
5/4/2011 7:00 AM 0.00 0.0 M M M 26F clear calm
5/5/2011 7:00 AM 0.00 0.0 M M M 22F clear calm
5/6/2011 7:00 AM 0.00 0.0 M M M 28F clear calm
5/7/2011 7:00 AM 0.00 0.0 M M M 28F clear calm
5/8/2011 7:00 AM 0.00 0.0 M M M 29F clear calm
5/9/2011 7:00 AM 0.00 0.0 M M M 38F scattered high clouds, windy
5/10/2011 7:00 AM 0.00 0.0 M M M
5/11/2011 7:00 AM T 0.0 M 0.0 M 26F SLV cloud ring, windy. Spit of rain about 9pm.
5/12/2011 7:00 AM 0.09 0.0 M 0.0 M 28F mostly cloudy. Spit rain/snow most of yesterday
5/13/2011 7:00 AM 0.00 0.0 M M M 25F clear, light breeze
5/14/2011 7:00 AM 0.00 0.0 M M M 25F clear calm
5/15/2011 7:00 AM T M M M M 31F Minor rain squalls into mid-afternoon.
5/16/2011 7:00 AM 0.00 0.0 M M M 37F clear calm
5/17/2011 7:00 AM 0.00 0.0 M M M 38F mostly cloudy, windy
5/18/2011 7:00 AM 0.00 0.0 M M M 31F SLV cloud ring, breezy
5/19/2011 7:00 AM 0.02 0.0 M 0.0 M 22F Snow down to the 9000 ft level. Rain at station level.
5/20/2011 7:00 AM 0.00 0.0 M M M 23F SLV cloud ring - light breeze.
5/21/2011 7:00 AM T 0.0 M 0.0 M 28F Late afternoon, evening & after dark - rain, slushy rain, snow & grapple squalls. Never enough moisture to wet the ground. Partly cloudy now.
5/22/2011 7:00 AM 0.00 0.0 M M M
5/23/2011 7:00 AM 0.00 0.0 M M M
5/24/2011 7:00 AM 0.00 0.0 M M M 37F overcast
5/25/2011 7:00 AM 0.00 0.0 M M M 27F Precip in local area yesterday, but none at station. SLV cloud ring, breezy.
5/26/2011 7:00 AM 0.00 0.0 M M M
5/27/2011 7:00 AM 0.00 0.0 M M M
5/28/2011 7:00 AM 0.00 0.0 M M M 45F clear windy
5/29/2011 7:00 AM 0.00 0.0 M M M 44F clear. Strong winds yesterday afternoon and all night.
5/30/2011 7:00 AM 0.00 0.0 M M M 42F. Windy all day yesterday. Starting out windy today. Clouds over San Juans.
5/31/2011 7:00 AM 0.00 0.0 M M M 27F clear, light breeze. Starting out less windy than yesterday. Wind bad yesterday.
6/1/2011 7:00 AM 0.00 0.0 M M M 47F clear sky, windy & dusty.
6/2/2011 7:00 AM 0.00 0.0 M M M 50F high clouds, windy, dust & smoke haze (probably from Taos fire).
6/3/2011 7:00 AM 0.00 0.0 M M M 44F partly cloudy, breezy already - Smoke & dust haze. Amazingly thick smoke yesterday plus high winds and dust - visibility less than one mile at times.
6/4/2011 7:00 AM 0.00 0.0 M M M 35F high clouds, calm, smoke & dust haze. High winds w/dust & smoke yesterday.
6/5/2011 7:00 AM 0.00 0.0 M M M 50F calm with smoke and dust haze. Smoke smell strong. Overcast but unable to tell if overcast is smoke, clouds or both. Visibility 6 miles (normally "unlimited"). Wind coming up as I'm writing this.
6/6/2011 7:00 AM 0.00 0.0 M M M 42F Smoky & calm. Visibility ~5 miles.
6/7/2011 7:00 AM 0.00 0.0 M M M 44F Clear w/light smoke haze, breezy
6/8/2011 7:00 AM 0.00 0.0 M M M 38F clear & calm w/slight smoke haze
6/9/2011 7:00 AM 0.00 0.0 M M M 40F clear w/ smoky haze, calm
6/10/2011 7:00 AM 0.00 0.0 M M M 32F clear w/light smoke haze, calm
6/11/2011 7:00 AM 0.00 0.0 M M M 48F high clouds & smoke haze, calm
6/12/2011 7:00 AM 0.00 0.0 M M M 38F Clear sky, smoke haze, calm
6/13/2011 7:00 AM 0.00 0.0 M M M 42F high cirrus, light breeze, very little smoke haze.
6/14/2011 7:00 AM 0.00 0.0 M M M 38F Mostly clear, breezy, light smoke haze. The pyrocumulus cloud from the Raton Track Fire is clearly visible from much of the San Luis Valley.
6/15/2011 7:00 AM 0.00 0.0 M M M 38F clear, calm
6/16/2011 7:00 AM 0.00 0.0 M M M 42F clear w/slight smoke haze, light breeze
6/17/2011 7:00 AM 0.00 0.0 M M M 49F clear sky, smoke haze - unable to see San Juans across valley, very light breeze
6/18/2011 7:00 AM 0.00 0.0 M M M 46F mostly clear, slight smoke haze, light breeze
6/19/2011 7:00 AM 0.00 0.0 M M M 56F high clouds, light wind
6/20/2011 7:00 AM 0.00 0.0 M M M 38F cloudy, light breeze. Snow skiff on Sangre de Cristos to east of station. Snow down to about 10,000ft on California Peak.
6/21/2011 7:00 AM 0.00 0.0 M M M 40F clear, calm. Yesterday's snow skiff on the Sangres is gone. No noticeable increase in stream flow - in fact all Dist 35 streams w/SatMons are down today (Sand Creek, Medano Creek, Ute Creek, Sangre de Cristo, and Trinchera Creek). Likely mostly due to cooler temps in high county.
6/22/2011 7:00 AM 0.00 0.0 M M M 41F clear calm
6/23/2011 7:00 AM 0.00 0.0 M M M 40F clear calm
6/24/2011 7:00 AM 0.00 0.0 M M M 44F clear calm
6/25/2011 7:00 AM 0.00 0.0 M M M 52F high cirrus, calm
6/26/2011 7:00 AM 0.00 0.0 M M M 48F clear calm
6/27/2011 7:00 AM 0.00 0.0 M M M 42F clear w/haze (smoke?), calm
6/28/2011 7:00 AM 0.00 0.0 M M M 56F light wind, heavy smoke haze, scattered clouds. San Juans not visible due to smoke haze. Visibility greatly reduced. Smoke smell very strong!
6/29/2011 7:00 AM 0.00 0.0 M M M 48F Mostly clear, heavy smoke haze, calm
6/30/2011 7:00 AM 0.00 0.0 M M M 52F high cirrus, smoky, calm. Smoke, primarily from the Los Alamos fire, filled the San Luis Valley yesterday. Visibility dropped to about 1/2 mile about 4pm, the smoke was choking - made your eyes water, and you would go into coughing spasms if you breathed deeply. By 7pm it had cleared enough (5mi visibility) that I was able to take the dogs for a walk.
7/1/2011 7:00 AM 0.00 0.0 M M M 43F clear, calm. Smoke cleared out overnight; was thick and nasty most of yesterday. High winds whipped up dust in afternoon coupled with smoke made it very unpleasant to be outside - visibility very limited.
7/2/2011 7:00 AM 0.00 0.0 M M M 50F Calm, clear sky, smoke haze, limited visibility. Smoke moved in overnight after almost 24hrs w/o significant smoke.
7/3/2011 7:00 AM 0.06 M M M M 48F Broke streak of 41 days w/o precip, 43 days w/o measurable precip! Calm, heavy smoke, clear sky.
7/4/2011 7:00 AM T M M M M 48F Clear sky, light smoke haze, calm. Just enough rain to erase fresh tracks in driveway.
7/5/2011 7:00 AM 0.00 0.0 M M M 52F high cirrus, smoke haze, calm
7/6/2011 7:00 AM 0.00 0.0 M M M 48F clear overhead, heavy smoke haze - west range barely visible, calm.
7/7/2011 7:00 AM 0.00 0.0 M M M 48F Clear sky, calm, smoke haze obscuring west mountains.
7/8/2011 7:00 AM T M M M M 61F Mostly cloudy, smoke haze, light breeze.
7/9/2011 7:00 AM T M M M M Mostly clear sky, minimal smoke haze, calm
7/10/2011 7:00 AM 0.00 0.0 M M M 55 Partly cloudy, smoke haze, calm
7/11/2011 7:00 AM 0.02 M M M M 58F mostly clear w/light smoke haze, calm
7/12/2011 7:00 AM 0.25 M M M M 44 clear, calm w/slight smoke haze. Main thundershower yesterday about 2pm (0.24). More rain (0.01 not observed) sometime between 5pm and 9pm.
7/13/2011 7:00 AM 0.02 M M M M 45F clear, calm, very little smoke haze
7/14/2011 7:00 AM T M M M M Mostly clear, high clouds, calm
7/15/2011 7:00 AM 0.00 0.0 M M M
7/16/2011 7:00 AM 0.00 0.0 M M M 53F mostly overcast, calm smoke haze. Smoke strong at times yesterday.
7/17/2011 7:00 AM 0.00 0.0 M M M
7/18/2011 7:00 AM 0.00 0.0 M M M 58F clear sky, significant smoke haze (unable to see west range) light breeze.
7/19/2011 7:00 AM 0.00 0.0 M M M
7/20/2011 7:00 AM 0.00 0.0 M M M 48F clear, calm. Almost no smoke haze. Power out yesterday am - no report.
7/21/2011 7:00 AM 0.00 0.0 M M M 51F partly cloudy, visibility good, humid, calm
7/22/2011 7:00 AM 0.01 M M M M 47F partly cloudy, calm, good visibility.
7/23/2011 7:00 AM 0.00 0.0 M M M 49F clear, calm
7/24/2011 7:00 AM 0.00 0.0 M M M 49F clear calm
7/25/2011 7:00 AM T M M M M 43F clear calm
7/26/2011 7:00 AM T M M M M 43F mostly clear, clouds over San Juans, calm
7/27/2011 7:00 AM T M M M M 45F Partly cloudy, high cirrus, calm
7/28/2011 7:00 AM 0.00 0.0 M M M 42F clear calm
7/29/2011 7:00 AM 0.49 M M M M 51F clear, calm. First REAL rain of the year! Looks like the monsoon has reached the San Luis Valley. Ground so dry - no runoff!
7/30/2011 7:00 AM 0.01 M M M M 49F high cirrus, calm. T-cloud over Sangres, mostly sprinkles here.
7/31/2011 7:00 AM 0.12 M M M M 44F Clear calm. T-Storm over Sangres slopped over station.
8/1/2011 7:00 AM 0.00 0.0 M M M 47F clear, calm
8/2/2011 7:00 AM 0.17 M M M M Two rain showers. 2:30p 0.06. Rest after 7pm.
8/3/2011 7:00 AM 0.23 M M M M Afternoon thundershower plus some overnight rain.
8/4/2011 7:00 AM 0.00 0.0 M M M 50F mostly cloudy, clear
8/5/2011 7:00 AM 0.00 0.0 M M M 42F clear, calm. Heavy rains on south side of Mt. Blanca including torrential rain and flooding in the town of Blanca about 3pm.
8/6/2011 7:00 AM 0.00 0.0 M M M 44F clear calm
8/7/2011 7:00 AM 0.00 0.0 M M M
8/8/2011 7:00 AM 0.00 0.0 M M M
8/9/2011 7:00 AM 0.00 0.0 M M M
8/10/2011 7:00 AM 0.00 0.0 M M M
8/11/2011 7:00 AM 0.00 0.0 M M M
8/12/2011 7:00 AM 0.00 0.0 M M M
8/13/2011 7:00 AM 0.00 0.0 M M M
8/14/2011 7:00 AM 0.00 0.0 M M M 54F overcast calm
8/15/2011 7:00 AM 0.01 M M M M 47F overcast, light breeze.
8/16/2011 7:00 AM 0.00 0.0 M M M
8/17/2011 7:00 AM 0.02 M M M M 42F clear calm
8/18/2011 7:00 AM 0.00 0.0 M M M
8/19/2011 7:00 AM 0.00 0.0 M M M 51F overcast, calm
8/20/2011 7:00 AM 0.00 0.0 M M M
8/21/2011 7:00 AM 0.04 M M M M 49F mostly cloudy, calm
8/22/2011 7:00 AM 0.41 M M M M 43F Shower 5-5:30pm = 0.24; Thundershower 11pm-1am = 0.17 Clear & calm now
8/23/2011 7:00 AM 0.68 M M M M 48F clear, calm. Two thunderstorms. 1st at 5pm tapering off by 7pm. (0.61) Second 9pm - 10:30pm.
8/24/2011 7:00 AM 0.00 0.0 M M M
8/25/2011 7:00 AM 0.01 M M M M
8/26/2011 7:00 AM T 0.0 M M M
8/27/2011 7:00 AM 0.47 M M M M 51F Mostly clear, some high cirrus. This T-storm and others build over and below the Sangre de Cristo Mountains. The weather radar in Pueblo really doesn't see these storms as they are eclipsed by the mountains; the radar can only see the tops of the clouds. I'm watching "live dopplar radar" on KKTV at 5, it's thundering and pouring rain - and there's little or no indication on the weather map that this is happening. This occurs commonly with this type of storm.
8/28/2011 7:00 AM 0.00 0.0 M M M
8/29/2011 7:00 AM T M M M M
8/30/2011 7:00 AM 0.02 M M M M 43F clear, calm. Afternoon shower.
8/31/2011 7:00 AM 0.00 0.0 M M M
9/1/2011 7:00 AM 0.11 M M M M
9/2/2011 7:00 AM 0.03 M M M M 46F calm, partly cloudy
9/3/2011 7:00 AM 0.00 0.0 M M M
9/4/2011 7:00 AM 0.00 0.0 M M M
9/5/2011 7:00 AM 0.00 0.0 M M M
9/6/2011 7:00 AM 0.00 0.0 M M M
9/7/2011 7:00 AM 0.05 M M M M 40F mostly cloudy, calm
9/8/2011 7:00 AM 0.02 M M M M 42 overcaset, calm
9/9/2011 7:00 AM 0.05 M M M M 38F -- Feelin' Fall.
9/10/2011 7:00 AM 0.00 0.0 M M M 30F Snow on Culebra Range S. of Ft. Garland yesterday afternoon -looked like down to 10,000 ft.
9/11/2011 7:00 AM 0.03 M M M M 32F mostly clear, clouds bank over San Juans.
9/12/2011 7:00 AM 0.00 0.0 M M M
9/13/2011 7:00 AM 0.00 0.0 M M M
9/14/2011 7:00 AM 0.26 M M M M 32F Ptly cloudy, calm. Snow on California Peak above timber line.
9/15/2011 7:00 AM 0.18 M M M M 40F Partly cloudy, breezy. Rain yesterday afternoon and overnight.
9/16/2011 7:00 AM 0.17 M M M M
9/17/2011 7:00 AM 0.09 M M M M 36F Patches of Aspen on the mountains are changing color. Calm, high cirrus. Rain overnight.
9/18/2011 7:00 AM 0.18 M M M M 32F high cirrus.
9/19/2011 7:00 AM 0.00 0.0 M M M
9/20/2011 7:00 AM 0.00 0.0 M M M
9/21/2011 7:00 AM 0.00 0.0 M M M
9/22/2011 7:00 AM 0.00 0.0 M M M
9/23/2011 7:00 AM 0.00 0.0 M M M
9/24/2011 7:00 AM 0.00 0.0 M M M
9/25/2011 7:00 AM 0.00 0.0 M M M
9/26/2011 7:00 AM 0.00 0.0 M M M
9/27/2011 7:00 AM 0.00 0.0 M M M
9/28/2011 7:00 AM 0.00 0.0 M M M
9/29/2011 7:00 AM 0.00 0.0 M M M
9/30/2011 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
10/24/2010 10/30/2010 7:00 AM 7 0.24 M M Snow accumulation on mountains down to about 10,000 ft.
1/29/2011 2/07/2011 5:00 PM 10 0.16 6.0 M First significant snowfall of the year -- and I missed it!



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