Station Overview Station Location
Station Number WA-OK-12 Latitude 48.433861
Station Name Winthrop 3.3 SE Longitude -120.136483
County Okanogan Elevation (ft) 2202



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 1.04 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 09 2.23 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 09 2.57 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 10 2.26 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 10 1.49 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 10 1.11 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 10 0.79 0.77 19 0.77 19 0.00 0 0 5 1 0.0 0 0
May 10 1.06 3.19 31 3.12 26 0.07 5 2 11 0 0.4 1 1
June 10 1.26 0.84 30 0.84 27 0.00 3 1 10 2 0.0 0 0
July 10 0.74 0.11 30 0.00 16 0.11 14 2 0 0 0.0 0 0
Aug 10 0.54 2.68 31 1.60 25 1.08 6 1 2 0 0.0 0 0
Sept 10 0.46 1.13 30 0.94 24 0.19 6 2 8 2 0.0 0 0
Water Year Totals: 15.55" 8.72" 171 days 7.27" 137 1.45" 34 days 8 36 days 5 days 0.4" 1 days 1 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
10/25/2009
10/26/2009
10/27/2009
10/28/2009
10/29/2009
10/30/2009
10/31/2009
11/1/2009
11/2/2009
11/3/2009
11/4/2009
11/5/2009
11/6/2009
11/7/2009
11/8/2009
11/9/2009
11/10/2009
11/11/2009
11/12/2009
11/13/2009
11/14/2009
11/15/2009
11/16/2009
11/17/2009
11/18/2009
11/19/2009
11/20/2009
11/21/2009
11/22/2009
11/23/2009
11/24/2009
11/25/2009
11/26/2009
11/27/2009
11/28/2009
11/29/2009
11/30/2009
12/1/2009
12/2/2009
12/3/2009
12/4/2009
12/5/2009
12/6/2009
12/7/2009
12/8/2009
12/9/2009
12/10/2009
12/11/2009
12/12/2009
12/13/2009
12/14/2009
12/15/2009
12/16/2009
12/17/2009
12/18/2009
12/19/2009
12/20/2009
12/21/2009
12/22/2009
12/23/2009
12/24/2009
12/25/2009
12/26/2009
12/27/2009
12/28/2009
12/29/2009
12/30/2009
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010
1/9/2010
1/10/2010
1/11/2010
1/12/2010
1/13/2010
1/14/2010
1/15/2010
1/16/2010
1/17/2010
1/18/2010
1/19/2010
1/20/2010
1/21/2010
1/22/2010
1/23/2010
1/24/2010
1/25/2010
1/26/2010
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
3/28/2010
3/29/2010
3/30/2010
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010
4/3/2010
4/4/2010
4/5/2010
4/6/2010
4/7/2010
4/8/2010
4/9/2010
4/10/2010
4/11/2010
4/12/2010 0.00
4/13/2010 0.08
4/14/2010 T
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.00
4/18/2010 0.01
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.02
4/22/2010 0.00
4/23/2010 0.00
4/24/2010 0.00
4/25/2010 0.00
4/26/2010 0.00
4/27/2010 0.58
4/28/2010 0.08
4/29/2010 0.00
4/30/2010 0.00
5/1/2010 0.00
5/2/2010 0.00
5/3/2010 0.00
5/4/2010 0.06
5/5/2010 0.09
5/6/2010 0.08
5/7/2010 0.00
5/8/2010 0.00
5/9/2010 **
5/10/2010 **
5/11/2010 0.02
5/12/2010 0.00
5/13/2010 0.00
5/14/2010 0.00
5/15/2010 **
5/16/2010 0.05
5/17/2010 0.12
5/18/2010 0.01
5/19/2010 0.25
5/20/2010 0.77
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 0.00
5/26/2010 0.00
5/27/2010 0.78
5/28/2010 0.82
5/29/2010 0.13
5/30/2010 0.00
5/31/2010 0.01
6/1/2010 0.03
6/2/2010 0.11
6/3/2010 0.01
6/4/2010 0.13
6/5/2010 0.09
6/6/2010 0.00
6/7/2010 0.07
6/8/2010 0.00
6/9/2010 0.05
6/10/2010 0.00
6/11/2010 0.00
6/12/2010 0.00
6/13/2010 0.00
6/14/2010 **
6/15/2010 0.00
6/16/2010 0.08
6/17/2010 0.17
6/18/2010 T
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.10
6/22/2010 0.00
6/23/2010 0.00
6/24/2010 T
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.00
6/29/2010 0.00
6/30/2010 **
Day of YearDaily PrcpMultiday Prcp
7/1/2010 **
7/2/2010 0.11
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00
7/10/2010 0.00
7/11/2010 0.00
7/12/2010 **
7/13/2010 **
7/14/2010 **
7/15/2010 0.00
7/16/2010 0.00
7/17/2010
7/18/2010 0.00
7/19/2010 0.00
7/20/2010 0.00
7/21/2010 0.00
7/22/2010 0.00
7/23/2010 0.00
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 1.08
8/2/2010 0.00
8/3/2010 0.00
8/4/2010 1.57
8/5/2010 0.03
8/6/2010 0.00
8/7/2010 0.00
8/8/2010 0.00
8/9/2010 0.00
8/10/2010 0.00
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 0.00
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 0.00
8/17/2010 0.00
8/18/2010 0.00
8/19/2010 0.00
8/20/2010 0.00
8/21/2010 0.00
8/22/2010 0.00
8/23/2010 0.00
8/24/2010 0.00
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 **
8/28/2010 **
8/29/2010 **
8/30/2010 **
8/31/2010 **
9/1/2010 0.19
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.14
9/8/2010 0.19
9/9/2010 0.05
9/10/2010 0.00
9/11/2010 **
9/12/2010 **
9/13/2010 **
9/14/2010 **
9/15/2010 0.00
9/16/2010 0.02
9/17/2010 0.01
9/18/2010 0.21
9/19/2010 0.29
9/20/2010 T
9/21/2010 0.03
9/22/2010 0.00
9/23/2010 0.00
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 T
9/27/2010 0.00
9/28/2010 0.00
9/29/2010 0.00
9/30/2010 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
4/12/2010 7:00 AM 0.00 0.0 M M M
4/13/2010 7:00 AM 0.08 M M M M Steady light drizzle since about 4:30 PM yesterday afternoon. Temp at 7 AM was 41.9 deg F.
4/14/2010 7:00 AM T M M M M
4/15/2010 7:00 AM 0.00 0.0 M M M
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 0.01 M 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 0.02 M M M M
4/22/2010 7:00 AM 0.00 0.0 M M M
4/23/2010 7:00 AM 0.00 0.0 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 0.58 M M M M
4/28/2010 7:00 AM 0.08 M M M M Had about 3 minutes of hail at 1:15 PM local time yesterday (4/27). 3-4 mm pellets.
4/29/2010 7:00 AM 0.00 0.0 M M M
4/30/2010 7:00 AM 0.00 0.0 M M M
5/1/2010 7:00 AM 0.00 0.0 M M M
5/2/2010 7:00 AM 0.00 0.0 M M M
5/3/2010 7:00 AM 0.00 0.0 M M M
5/4/2010 7:00 AM 0.06 M M M M The storm hit right after I checked my rain gauge at 7 AM yesterday (5/3)! Nice rainbows.
5/5/2010 7:00 AM 0.09 0.4 M 0.5 M
5/6/2010 7:00 AM 0.08 M M M M
5/7/2010 7:00 AM 0.00 0.0 M M M
5/8/2010 7:00 AM 0.00 0.0 M M M
5/12/2010 7:00 AM 0.00 0.0 M M M
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
5/17/2010 7:00 AM 0.12 M M M M
5/18/2010 7:00 AM 0.01 M M M M
5/19/2010 7:00 AM 0.25 M M M M
5/20/2010 7:00 AM 0.77 M M M M Rain started around 4:30 PM; heaviest was after 7:30 PM; had 0.5" already by 8:30PM. Clear skies by 11 PM.
5/21/2010 7:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.00 0.0 M M M
5/23/2010 7:00 AM 0.00 0.0 M M M
5/24/2010 7:00 AM 0.00 0.0 M M M
5/25/2010 7:00 AM 0.00 0.0 M M M
5/26/2010 7:00 AM 0.00 0.0 M M M
5/27/2010 7:00 AM 0.78 M M M M
5/28/2010 7:00 AM 0.82 M M M M
5/29/2010 7:00 AM 0.13 M M M M
5/30/2010 7:00 AM 0.00 0.0 M M M
5/31/2010 7:00 AM 0.01 M M M M
6/1/2010 7:00 AM 0.03 M M M M
6/2/2010 7:00 AM 0.11 M M M M
6/3/2010 7:00 AM 0.01 M M M M
6/4/2010 7:00 AM 0.13 M M M M
6/5/2010 7:00 AM 0.09 M M M M
6/6/2010 7:00 AM 0.00 0.0 M M M
6/7/2010 7:00 AM 0.07 M M M M
6/8/2010 7:00 AM 0.00 0.0 M M M
6/9/2010 7:00 AM 0.05 M M M M
6/10/2010 7:00 AM 0.00 0.0 M M M
6/11/2010 7:00 AM 0.00 0.0 M M M
6/12/2010 7:00 AM 0.00 0.0 M M M
6/13/2010 7:00 AM 0.00 0.0 M M M
6/16/2010 7:00 AM 0.08 M M M M
6/17/2010 7:00 AM 0.17 M M M M
6/18/2010 7:00 AM T M M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.10 M M M M
6/22/2010 7:00 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.00 0.0 M M M
6/24/2010 7:00 AM T M M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 7:00 AM 0.00 0.0 M M M
6/29/2010 7:00 AM 0.00 0.0 M M M
7/3/2010 7:00 AM 0.00 0.0 M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM 0.00 0.0 M M M
7/6/2010 7:00 AM 0.00 0.0 M M M
7/7/2010 7:00 AM 0.00 0.0 M M M
7/8/2010 7:00 AM 0.00 0.0 M M M
7/9/2010 7:00 AM 0.00 0.0 M M M
7/10/2010 7:00 AM 0.00 0.0 M M M
7/11/2010 7:00 AM 0.00 0.0 M M M
7/16/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M
7/19/2010 7:00 AM 0.00 0.0 M M M
7/20/2010 7:00 AM 0.00 0.0 M M M
7/21/2010 7:00 AM 0.00 0.0 M M M
7/22/2010 7:00 AM 0.00 0.0 M M M
7/23/2010 7:00 AM 0.00 0.0 M M M
8/2/2010 7:00 AM 0.00 0.0 M M M
8/3/2010 7:00 AM 0.00 0.0 M M M
8/4/2010 7:00 AM 1.57 M M M M For comparison, our Davis Vantage Pro2 wx station logged 1.62". Heaviest rain was 0.5" in only 10 minutes, from 3:20-3:30 PM on 8/3! This first (main) storm lasted about 55 min., during which there was 1" accumulation. Also pea-sized hail from 3:10-3:18 PM (reported separately). Later in the evening (starting around 6:30 PM), we had less heavy, but steady, showers, which ended sometime after midnight.
8/5/2010 7:00 AM 0.03 M M M M Gentle showers overnight. The rain gauge amount matches the Davis wx log today.
8/6/2010 7:00 AM 0.00 0.0 M M M
8/7/2010 7:00 AM 0.00 0.0 M M M
8/8/2010 7:00 AM 0.00 0.0 M M M Overcast all day, with scattered raindrops in the afternoon and evening (but, evidently not enough to register as even "trace" in the rain gauge).
8/9/2010 7:00 AM 0.00 0.0 M M M
8/10/2010 7:00 AM 0.00 0.0 M M M
8/11/2010 7:00 AM 0.00 0.0 M M M
8/12/2010 7:00 AM 0.00 0.0 M M M
8/13/2010 7:00 AM 0.00 0.0 M M M
8/14/2010 7:00 AM 0.00 0.0 M M M
8/15/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 7:00 AM 0.00 0.0 M M M
8/17/2010 7:00 AM 0.00 0.0 M M M
8/18/2010 7:00 AM 0.00 0.0 M M M
8/19/2010 7:00 AM 0.00 0.0 M M M
8/20/2010 7:00 AM 0.00 0.0 M M M
8/21/2010 7:00 AM 0.00 0.0 M M M
8/22/2010 7:00 AM 0.00 0.0 M M M
8/23/2010 7:00 AM 0.00 0.0 M M M
8/24/2010 7:00 AM 0.00 0.0 M M M
8/25/2010 7:00 AM 0.00 0.0 M M M
8/26/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM 0.00 0.0 M M M
9/4/2010 7:00 AM 0.00 0.0 M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.00 0.0 M M M
9/7/2010 7:00 AM 0.14 M M M M
9/8/2010 7:00 AM 0.19 M M M M Davis Vantage Pro2 registered 0.20"
9/9/2010 7:00 AM 0.05 M M M M Davis wx station registered 0.07"
9/10/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:00 AM 0.02 M M M M Rain gauge was emptied last night at 6:30 PM (multi-day accum.), so this 0.02" fell in the last 12.5 hrs.
9/17/2010 7:00 AM 0.01 M M M M
9/18/2010 7:00 AM 0.21 M M M M
9/19/2010 7:00 AM 0.29 M M M M
9/20/2010 7:00 AM T M M M M
9/21/2010 7:00 AM 0.03 M M M M
9/22/2010 7:00 AM 0.00 0.0 M M M
9/23/2010 7:00 AM 0.00 0.0 M M M
9/24/2010 7:00 AM 0.00 0.0 M M M
9/25/2010 7:00 AM 0.00 0.0 M M M
9/26/2010 7:00 AM T M M M M
9/27/2010 7:00 AM 0.00 0.0 M M M
9/28/2010 7:00 AM 0.00 0.0 M M M
9/29/2010 7:00 AM 0.00 0.0 M M M
9/30/2010 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
5/9/2010 5/11/2010 7:00 AM 3 0.02 M M
5/15/2010 5/16/2010 8:00 PM 2 0.05 M M
6/14/2010 6/15/2010 7:00 AM 2 0.00 M M
6/30/2010 7/02/2010 7:00 AM 3 0.11 M M Rain gauge accumulated a bit over 0.03" b/w 7 AM 6/29 and 7:30 PM 7/1; the remaining ~0.08" we received overnight, b/w 7:30 PM 7/1 and 7 AM 7/2.
7/12/2010 7/15/2010 7:00 AM 4 0.00 M M
7/24/2010 8/01/2010 7:00 AM 9 1.08 M M We have a Davis Vantage Pro 2 weather station, which archived the following rainfall amounts during the 8 days we were away. The total registered was 1.20" (vs. the 1.08" measured from the CoCoRaHS rain gauge after 8 days, which could have had some evaporation). July 29: 12:25AM-1:25AM: 0.11" July 31: this was a very stormy afternoon and evening! Most of the total precip during the last 8 days occurred this day. High temp was 86.9 deg F at 2:15 PM, winds 15 mph out of the NW; the temp dropped to 71.5 by 3:55 PM, when first rain accumulation was logged. (winds 17 mph out of W). The Davis wx station logged the following rainfall amounts in 10-minute increments: 3:45 PM - 3:55 PM: 0.04" 3:55-4:05 PM: 0.21" !! (in only 10 minutes!!) 4:05-4:15 PM: 0.16" 4:15-4:25 PM: 0.14" 4:25-4:35 PM: 0.08" 4:35-4:45 PM: 0.02" ... for a total over 1 hour of 0.65". A friend across the valley from us reported hail during this time as well. Later rainfall amounts, continuing on July 31 and beginning of Aug 1: 6:05-6:15 PM: 0.05" 6:15-6:25 PM: 0.04" 6:25-6:35 PM: 0.04" 6:35-6:45 PM: 0.03" 6:45-6:55 PM: 0.01" 6:55-10:05 PM: 0.25" 11:45-11:55 PM: 0.01" 2:05 AM-2:15 AM (Aug. 1): 0.01" Total rainfall from 7AM July 31 to 7 AM Aug. 1 = 1.09"
8/27/2010 9/01/2010 7:00 AM 6 0.19 M M
9/11/2010 9/15/2010 6:30 PM 5 0.00 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
4/27/2010 1:15 PM No hail pad. Average pellet size 3-4 mm (between rice and peas); took picture of a couple pellets next to ruler. Don't know if any was soft; some seemed partially clear ice. 1/4" Pea Size NA Rice Hard|White Ice 3 1min no damage Continuous True After rain Same time as smaller hail vertical
8/3/2010 3:10 PM 3/8" 1/4" Pea Size Rice Hard|Clear Ice|White Ice 8 1min no damage Continuous True After rain Before smaller hail 10-20