Station Overview Station Location
Station Number WY-PK-21 Latitude 44.683786
Station Name Powell 5.1 S Longitude -108.739515
County Park Elevation (ft) 4358



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 09 0.53 0.02 8 0.02 7 0.00 1 0 1 3 0.0 0 0
Nov 09 0.19 0.00 31 0.00 30 0.00 1 1 0 2 0.0 0 0
Dec 09 0.16 0.06 31 0.06 31 0.00 0 0 2 11 1.2 4 8
Jan 10 0.17 0.00 23 0.00 23 0.00 0 0 0 2 0.0 0 0
Feb 10 0.12 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 10 0.32 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 0
April 10 0.52 0.54 26 0.54 26 0.00 0 0 3 1 0.0 0 0
May 10 1.36 1.17 22 1.17 20 0.00 2 0 9 1 0.0 0 0
June 10 1.10 1.15 22 0.00 0 1.15 22 2 0 0 0.0 0 0
July 10 0.89 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 10 0.47 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 10 0.67 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 6.50" 2.94" 164 days 1.79" 138 1.15" 26 days 3 15 days 20 days 1.2" 4 days 8 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
10/1/2009
10/2/2009
10/3/2009
10/4/2009
10/5/2009
10/6/2009
10/7/2009
10/8/2009
10/9/2009
10/10/2009
10/11/2009
10/12/2009
10/13/2009
10/14/2009
10/15/2009
10/16/2009
10/17/2009
10/18/2009
10/19/2009
10/20/2009
10/21/2009
10/22/2009
10/23/2009
10/24/2009 0.00
10/25/2009 0.02
10/26/2009 T
10/27/2009 0.00
10/28/2009 T
10/29/2009 T
10/30/2009 0.00
10/31/2009 **
11/1/2009 0.00 0.00
11/2/2009 0.00
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.00
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.00
11/12/2009 0.00
11/13/2009 T
11/14/2009 0.00
11/15/2009 0.00
11/16/2009 0.00
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 0.00
11/20/2009 0.00
11/21/2009 0.00
11/22/2009 0.00
11/23/2009 0.00
11/24/2009 0.00
11/25/2009 0.00
11/26/2009 0.00
11/27/2009 0.00
11/28/2009 0.00
11/29/2009 T
11/30/2009 0.00
12/1/2009 0.00
12/2/2009 T
12/3/2009 T
12/4/2009 0.00
12/5/2009 0.00
12/6/2009 T
12/7/2009 0.01
12/8/2009 0.05
12/9/2009 T
12/10/2009 0.00
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 T
12/14/2009 T
12/15/2009 T
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 T
12/19/2009 0.00
12/20/2009 0.00
12/21/2009 0.00
12/22/2009 0.00
12/23/2009 T
12/24/2009 0.00
12/25/2009 T
12/26/2009 T
12/27/2009 0.00
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.00
1/2/2010 0.00
1/3/2010 T
1/4/2010 0.00
1/5/2010 0.00
1/6/2010 T
1/7/2010 0.00
1/8/2010 0.00
1/9/2010 0.00
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 0.00
1/13/2010 0.00
1/14/2010 0.00
1/15/2010 0.00
1/16/2010 0.00
1/17/2010 0.00
1/18/2010 0.00
1/19/2010 0.00
1/20/2010 0.00
1/21/2010 0.00
1/22/2010
1/23/2010
1/24/2010
1/25/2010 0.00
1/26/2010 0.00
1/27/2010
1/28/2010
1/29/2010
1/30/2010
1/31/2010
2/1/2010
2/2/2010
2/3/2010
2/4/2010
2/5/2010
2/6/2010
2/7/2010
2/8/2010
2/9/2010
2/10/2010
2/11/2010
2/12/2010
2/13/2010
2/14/2010
2/15/2010
2/16/2010
2/17/2010
2/18/2010
2/19/2010
2/20/2010
2/21/2010
2/22/2010
2/23/2010
2/24/2010
2/25/2010
2/26/2010
2/27/2010
2/28/2010
3/1/2010
3/2/2010
3/3/2010
3/4/2010
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010
3/10/2010
3/11/2010
3/12/2010
3/13/2010
3/14/2010
3/15/2010
3/16/2010
3/17/2010
3/18/2010
3/19/2010
3/20/2010
3/21/2010
3/22/2010
3/23/2010
3/24/2010
3/25/2010
3/26/2010
3/27/2010 0.00
3/28/2010
3/29/2010
3/30/2010
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 0.00
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010
4/7/2010 0.00
4/8/2010 0.00
4/9/2010 0.00
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.15
4/14/2010 0.08
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 0.00
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.00
4/22/2010 T
4/23/2010 0.31
4/24/2010 0.00
4/25/2010 0.00
4/26/2010 0.00
4/27/2010 0.00
4/28/2010
4/29/2010
4/30/2010
5/1/2010
5/2/2010
5/3/2010
5/4/2010
5/5/2010
5/6/2010
5/7/2010
5/8/2010
5/9/2010 0.00
5/10/2010 0.04
5/11/2010 0.14
5/12/2010 0.02
5/13/2010 0.00
5/14/2010 0.00
5/15/2010 0.00
5/16/2010 0.00
5/17/2010 0.00
5/18/2010 0.00
5/19/2010 0.14
5/20/2010 0.10
5/21/2010 0.00
5/22/2010 0.20
5/23/2010 T
5/24/2010 0.19
5/25/2010 0.33
5/26/2010 0.00
5/27/2010 0.00
5/28/2010
5/29/2010 0.01
5/30/2010 **
5/31/2010 **
6/1/2010 **
6/2/2010 **
6/3/2010 **
6/4/2010 **
6/5/2010 **
6/6/2010 **
6/7/2010 **
6/8/2010 **
6/9/2010 **
6/10/2010 **
6/11/2010 **
6/12/2010 **
6/13/2010 **
6/14/2010 **
6/15/2010 **
6/16/2010 **
6/17/2010 **
6/18/2010 **
6/19/2010 **
6/20/2010 **
6/21/2010 0.69
6/22/2010
6/23/2010
6/24/2010
6/25/2010
6/26/2010
6/27/2010
6/28/2010
6/29/2010
6/30/2010
Day of YearDaily PrcpMultiday Prcp
7/1/2010
7/2/2010
7/3/2010
7/4/2010
7/5/2010
7/6/2010
7/7/2010
7/8/2010
7/9/2010
7/10/2010
7/11/2010
7/12/2010
7/13/2010
7/14/2010
7/15/2010
7/16/2010
7/17/2010
7/18/2010
7/19/2010
7/20/2010
7/21/2010
7/22/2010
7/23/2010
7/24/2010
7/25/2010
7/26/2010
7/27/2010
7/28/2010
7/29/2010
7/30/2010
7/31/2010
8/1/2010
8/2/2010
8/3/2010
8/4/2010
8/5/2010
8/6/2010
8/7/2010
8/8/2010
8/9/2010
8/10/2010
8/11/2010
8/12/2010
8/13/2010
8/14/2010
8/15/2010
8/16/2010
8/17/2010
8/18/2010
8/19/2010
8/20/2010
8/21/2010
8/22/2010
8/23/2010
8/24/2010
8/25/2010
8/26/2010
8/27/2010
8/28/2010
8/29/2010
8/30/2010
8/31/2010
9/1/2010
9/2/2010
9/3/2010
9/4/2010
9/5/2010
9/6/2010
9/7/2010
9/8/2010
9/9/2010
9/10/2010
9/11/2010
9/12/2010
9/13/2010
9/14/2010
9/15/2010
9/16/2010
9/17/2010
9/18/2010
9/19/2010
9/20/2010
9/21/2010
9/22/2010
9/23/2010
9/24/2010
9/25/2010
9/26/2010
9/27/2010
9/28/2010
9/29/2010
9/30/2010



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/24/2009 7:00 AM 0.00 0.0 M M M
10/25/2009 7:00 AM 0.02 M M M M At 10/24/2009, 4:15 P.M. MDT, Light rainfall was accompanied by Rice and pea size hail. This hail lasted 5 minutes, fading in and out, and then stopped by 4:20 P.M.
10/26/2009 7:00 AM T M M M M
10/27/2009 7:00 AM 0.00 0.0 M M M
10/28/2009 7:00 AM T T T T T Only a trace of snow fell. During observation, light flurries were falling, and the wind was blowing to the south.
10/29/2009 7:00 AM T M T M T Moderate to Heavy Snow fell yesterday, but was not continuous, and did not accumulate on the ground. However,There was some snow in the Gauge, and when melted was only a Trace.
10/30/2009 7:00 AM 0.00 0.0 M M M
11/1/2009 7:00 AM 0.00 0.0 M M M Very Windy
11/2/2009 7:00 AM 0.00 0.0 M M M
11/3/2009 7:00 AM 0.00 0.0 M M M
11/4/2009 7:00 AM 0.00 0.0 M M M Light frost this morning.
11/5/2009 7:00 AM 0.00 0.0 M M M Light frost observed.
11/6/2009 7:00 AM 0.00 0.0 M M M Very strong winds with gusts up to 55 MPH starting at approximately 10:00 AM.
11/7/2009 7:00 AM 0.00 0.0 M M M
11/8/2009 7:00 AM 0.00 0.0 M M M
11/9/2009 7:00 AM 0.00 0.0 M M M
11/10/2009 7:00 AM 0.00 0.0 M M M
11/11/2009 7:00 AM 0.00 0.0 M M M
11/12/2009 7:00 AM 0.00 0.0 M M M
11/13/2009 7:00 AM T T T T T Snowflakes fell for approximately 30 minutes between one and two O'clock, with little accumulation on the ground, and overnight, Corn snow fell with a trace of accumulation.
11/14/2009 7:00 AM 0.00 0.0 M M M
11/15/2009 7:00 AM 0.00 0.0 M M M Heavy Frost in the morning.
11/16/2009 7:00 AM 0.00 0.0 M M M
11/17/2009 7:00 AM 0.00 0.0 M M M
11/18/2009 7:00 AM 0.00 0.0 M M M
11/19/2009 7:00 AM 0.00 0.0 M M M
11/20/2009 7:00 AM 0.00 0.0 M M M
11/21/2009 7:00 AM 0.00 0.0 M M M
11/22/2009 7:00 AM 0.00 0.0 M M M
11/23/2009 7:00 AM 0.00 0.0 M M M
11/24/2009 7:00 AM 0.00 0.0 M M M
11/25/2009 7:00 AM 0.00 0.0 M M M
11/26/2009 7:00 AM 0.00 0.0 M M M
11/27/2009 7:00 AM 0.00 0.0 M M M
11/28/2009 7:00 AM 0.00 0.0 M M M
11/29/2009 7:00 AM T M T M T Heavy Fog accompanied By heavy frost and light winds this morning, with visibility reduced to 200 yards.
11/30/2009 7:00 AM 0.00 0.0 M M M
12/1/2009 7:00 AM 0.00 0.0 M M M Very high winds beginning at 7:30 P.M. yesterday, and continuing through this morning.
12/2/2009 7:00 AM T T T T T Low of 6 Degrees last night with light winds.
12/3/2009 7:00 AM T T T T T
12/4/2009 7:00 AM 0.00 0.0 M T T Heavy Morning frost.
12/5/2009 7:00 AM 0.00 0.0 M T T
12/6/2009 7:00 AM T M M T T Temperatures around zero this morn.
12/7/2009 7:00 AM 0.01 0.1 0.01 T 0.01 8 Degrees below zero in the morning.
12/8/2009 8:00 AM 0.05 0.9 0.09 1.0 0.10
12/9/2009 7:00 AM T T T 1.0 0.05
12/10/2009 7:00 AM 0.00 0.0 M 1.0 0.05
12/11/2009 7:00 AM 0.00 0.0 M 1.0 0.04
12/12/2009 7:00 AM 0.00 0.0 M 0.5 0.03
12/13/2009 7:00 AM T T T T T
12/14/2009 7:00 AM T 0.1 T T T
12/15/2009 7:00 AM T T T T T
12/16/2009 7:00 AM 0.00 0.0 M T T
12/17/2009 7:00 AM 0.00 0.0 M T T
12/18/2009 7:00 AM T T T T T Trace corn snow overnight
12/19/2009 7:00 AM 0.00 0.0 M T T Heavy frost in the morning, with fog to the southwest.
12/20/2009 7:00 AM 0.00 0.0 M T T
12/21/2009 7:00 AM 0.00 0.0 M T T
12/22/2009 7:00 AM 0.00 0.0 M T T Beautiful day yesterday with a high of 47 and light winds with sunshine.
12/23/2009 7:00 AM T 0.1 T 0.1 T
12/24/2009 7:00 AM 0.00 0.0 M T T
12/25/2009 7:00 AM T M M 0.5 0.03
12/26/2009 7:00 AM T M M 1.0 0.04
12/27/2009 7:00 AM 0.00 0.0 M T T
12/28/2009 7:00 AM 0.00 0.0 M T T Heavy frost and fog in the morning, tapering off by 8 AM.
12/29/2009 7:00 AM 0.00 0.0 M T T
12/30/2009 7:00 AM 0.00 0.0 M T T
12/31/2009 7:00 AM 0.00 0.0 M T T
1/1/2010 7:00 AM 0.00 0.0 M T T
1/2/2010 7:00 AM 0.00 0.0 M T T
1/3/2010 7:00 AM T T T T T
1/4/2010 7:00 AM 0.00 0.0 M T T
1/5/2010 7:00 AM 0.00 0.0 M T T
1/6/2010 7:00 AM T T T T T
1/7/2010 7:00 AM 0.00 0.0 M T T Very cold temps down to -12 degrees.
1/8/2010 7:00 AM 0.00 0.0 M T T
1/9/2010 7:00 AM 0.00 0.0 M T T
1/10/2010 7:00 AM 0.00 0.0 M T T
1/11/2010 7:00 AM 0.00 0.0 M T T
1/12/2010 7:00 AM 0.00 0.0 M T T
1/13/2010 7:00 AM 0.00 0.0 M M M
1/14/2010 7:00 AM 0.00 0.0 M M M
1/15/2010 7:00 AM 0.00 0.0 M M M
1/16/2010 7:00 AM 0.00 0.0 M M M
1/17/2010 7:00 AM 0.00 0.0 M M M
1/18/2010 7:00 AM 0.00 0.0 M M M
1/19/2010 7:00 AM 0.00 0.0 M M M
1/20/2010 7:00 AM 0.00 0.0 M M M
1/21/2010 7:00 AM 0.00 0.0 M M M
1/25/2010 7:00 AM 0.00 0.0 M M M
1/26/2010 7:00 AM 0.00 0.0 M M M
3/27/2010 7:00 AM 0.00 0.0 M M M Very nice day. Sunny, with occasional clouds.
4/1/2010 7:00 AM 0.00 0.0 M M M
4/2/2010 7:00 AM 0.00 0.0 M M M
4/3/2010 7:00 AM 0.00 0.0 M M M
4/4/2010 7:00 AM 0.00 0.0 M M M
4/5/2010 7:00 AM 0.00 0.0 M M M
4/7/2010 7:00 AM 0.00 0.0 M M M
4/8/2010 7:00 AM 0.00 0.0 M M M Mostly sunny early in the morning, becoming partly cloudy.
4/9/2010 7:00 AM 0.00 0.0 M M M
4/10/2010 7:00 AM 0.00 0.0 M M M
4/11/2010 7:00 AM 0.00 0.0 M M M
4/12/2010 7:00 AM 0.00 0.0 M M M
4/13/2010 7:00 AM 0.15 M M M M Rain/snow mix. No snow accumulation, snow melted when contact with the ground or gauge was made. More rain than snow.
4/14/2010 7:00 AM 0.08 M M M M Gusty winds today up to 30 MPh.
4/15/2010 7:00 AM 0.00 0.0 M M M Looks like it will be a nice day.
4/16/2010 7:00 AM 0.00 0.0 M M M
4/17/2010 7:00 AM 0.00 0.0 M M M
4/18/2010 7:00 AM 0.00 0.0 M M M
4/19/2010 7:00 AM 0.00 0.0 M M M
4/20/2010 7:00 AM 0.00 0.0 M M M
4/21/2010 7:00 AM 0.00 0.0 M M M
4/22/2010 7:00 AM T M M M M
4/23/2010 7:00 AM 0.31 M M M M
4/24/2010 7:00 AM 0.00 0.0 M M M
4/25/2010 7:00 AM 0.00 0.0 M M M
4/26/2010 7:00 AM 0.00 0.0 M M M
4/27/2010 7:00 AM 0.00 0.0 M M M
5/9/2010 7:00 AM 0.00 0.0 M M M
5/10/2010 7:00 AM 0.04 M M M M
5/11/2010 7:00 AM 0.14 M M M M At observation time, drizzle was falling, with light fog and calm winds.
5/12/2010 7:00 AM 0.02 M M M M Windy, low clouds in all directions.
5/13/2010 7:00 AM 0.00 0.0 M M M
5/14/2010 7:00 AM 0.00 0.0 M M M
5/15/2010 7:00 AM 0.00 0.0 M M M
5/16/2010 7:00 AM 0.00 0.0 M M M
5/17/2010 7:00 AM 0.00 0.0 M M M
5/18/2010 7:00 AM 0.00 0.0 M M M Great weather, has been in the 70's all weekend!!!
5/19/2010 7:00 AM 0.14 M M M M
5/20/2010 7:00 AM 0.10 M M M M
5/21/2010 7:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.20 M M M M
5/23/2010 7:00 AM T M M M M
5/24/2010 7:00 AM 0.19 M M M M
5/25/2010 7:00 AM 0.33 M M M M
5/26/2010 7:00 AM 0.00 0.0 M M M
5/27/2010 7:00 AM 0.00 0.0 M M M
5/29/2010 7:00 AM 0.01 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/31/2009 11/01/2009 7:00 AM 2 0.00 0.0 0.00 Very Windy
5/30/2010 6/02/2010 7:00 AM 4 0.46 M M
6/2/2010 6/21/2010 7:00 AM 20 0.69 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
10/24/2009 4:30 PM Hail was not continuous and faded in and out as it rained. 1/4" Pea Size 1/4" Pea Size Rice Mixed|White Ice 5 2min no damage Intermittent True Before rain Before smaller hail 10-20
4/22/2010 4:30 PM Please disregard this report, it was a mistake made by my computer. Thank You! NA NA NA Mixed|Clear Ice|White Ice 6 no damage Continuous True After rain After smaller hail 30-40
4/22/2010 4:36 PM 3/8" 1/4" Pea Size Rice Mixed|Clear Ice|White Ice 6 no damage Continuous True Same time as rain After smaller hail 30-40
5/29/2010 12:05 PM Hail and rain fell at the same time. The largest hailstones were 3/8" in diameter, but very few fell. 3/8" 1/4" Pea Size Rice Hard|White Ice 9 1min no damage Intermittent False After rain After smaller hail 10-20