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 17 1.04 0.00 5 0.00 5 0.00 0 0 0 1 0.0 0 0
Nov 17 2.23 2.21 27 0.52 4 1.69 23 3 2 0 3.0 1 2
Dec 17 2.57 0.65 12 0.53 2 0.12 10 2 2 0 4.8 2 2
Jan 18 2.26 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 18 1.49 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 18 1.11 0.00 1 0.00 1 0.00 0 0 0 0 0.0 0 1
April 18 0.79 1.24 1 1.24 1 0.00 0 0 1 0 0.0 0 0
May 18 1.06 1.01 5 1.01 5 0.00 0 0 5 0 0.0 0 0
June 18 1.26 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 18 0.74 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 18 0.54 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 18 0.46 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 15.55" 5.11" 51 days 3.30" 18 1.81" 33 days 5 10 days 1 days 7.8" 3 days 5 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
10/1/2017 0.00
10/2/2017 T
10/3/2017 0.00
10/4/2017 0.00
10/5/2017 0.00
10/6/2017
10/7/2017
10/8/2017
10/9/2017
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017
10/30/2017
10/31/2017
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017 **
11/6/2017 **
11/7/2017 **
11/8/2017 **
11/9/2017 **
11/10/2017 **
11/11/2017 **
11/12/2017 **
11/13/2017 **
11/14/2017 **
11/15/2017 **
11/16/2017 **
11/17/2017 **
11/18/2017 **
11/19/2017 **
11/20/2017 **
11/21/2017 **
11/22/2017 **
11/23/2017 **
11/24/2017 0.16
11/25/2017 0.00
11/26/2017 0.27
11/27/2017 **
11/28/2017 0.01
11/29/2017 0.25
11/30/2017 0.00
12/1/2017 0.04
12/2/2017 **
12/3/2017 0.10
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017 **
12/12/2017 **
12/13/2017 **
12/14/2017 **
12/15/2017 **
12/16/2017 **
12/17/2017 **
12/18/2017 0.02
12/19/2017 0.49
12/20/2017
12/21/2017
12/22/2017
12/23/2017
12/24/2017
12/25/2017
12/26/2017
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018 0.00
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018 1.24
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018 0.05
5/8/2018
5/9/2018 0.44
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018
5/17/2018
5/18/2018 0.27
5/19/2018 0.24
5/20/2018 0.01
5/21/2018
5/22/2018
5/23/2018
5/24/2018
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018
5/30/2018
5/31/2018
6/1/2018
6/2/2018
6/3/2018
6/4/2018
6/5/2018
6/6/2018
6/7/2018
6/8/2018
6/9/2018
6/10/2018
6/11/2018
6/12/2018
6/13/2018
6/14/2018
6/15/2018
6/16/2018
6/17/2018
6/18/2018
6/19/2018
6/20/2018
6/21/2018
6/22/2018
6/23/2018
6/24/2018
6/25/2018
6/26/2018
6/27/2018
6/28/2018
6/29/2018
6/30/2018
Day of YearDaily PrcpMultiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018
7/24/2018
7/25/2018
7/26/2018
7/27/2018
7/28/2018
7/29/2018
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018
8/16/2018
8/17/2018
8/18/2018
8/19/2018
8/20/2018
8/21/2018
8/22/2018
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 7:00 AM 0.00 0.0 M M M
10/2/2017 7:00 AM T M M M M Brief rain squall and wind came through yesterday afternoon. Only splatted rain for 5-10 minutes.
10/3/2017 7:00 AM 0.00 0.0 M M M
10/4/2017 7:00 AM 0.00 0.0 M M M
10/5/2017 7:00 AM 0.00 0.0 M M M
11/25/2017 9:00 AM 0.00 0.0 M M M
11/26/2017 11:45 AM 0.27 M M T M Mostly rain; a little "wintry mix" last night, with mix of rain and snow. Got about 1/2" of wet snow sticking to ground last night; already melting by morning.
11/29/2017 8:00 AM 0.25 3.0 M 3.0 M
11/30/2017 8:00 AM 0.00 0.0 M 2.5 M
12/1/2017 9:30 AM 0.04 0.3 M 2.5 M
12/19/2017 9:45 AM 0.49 4.5 M 6.5 M Snow snow snow! Finally! Started overnight (some time after 9 PM); still going strong now.
3/21/2018 10:30 AM 0.00 0.0 M 6.5 2.43 Snow coverage: about half the property is bare; snow levels on the rest go up to ~13", with most areas in the 5-8" range. I'd say average total depth of snow across the 20 acres is ~6.5". The core sample taken for SWE was 6.8".
4/16/2018 7:00 PM 1.24 0.0 M M M Holy wow, we had a LOT of rain in the last 24 hours. Rain started yesterday afternoon-evening (~4:30 pm), and finally stopped at 1:15 this afternoon.
5/7/2018 5:00 PM 0.05 M M M M
5/9/2018 7:00 AM 0.44 M M M M Thunderstorms and rain last night! Storm started a few minutes after 10 PM. According to our Davis wx gauge (which registered a total of 0.42" as of 7 AM), we got 0.31" before midnight! Rained heavily around 10:30 PM, and again a couple hours later (after the winds had shifted). Still some isolated showers this morning after 7 AM.
5/18/2018 9:45 AM 0.27 M M M M Thunderstorms and rain...no hail. I love this time of year!
5/19/2018 2:00 PM 0.24 M M M M
5/20/2018 8:00 AM 0.01 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/5/2017 11/22/2017 9:00 AM 18 1.52 0.5 M mostly rain during this period, but our caretakers told us we got ~ 6" of snow one night during the week of Nov. 6 (which later melted), and another ~6" the morning of Nov. 20 (which was largely melted later in the day).
11/22/2017 11/24/2017 9:00 AM 3 0.16 T M
11/27/2017 11/28/2017 8:00 AM 2 0.01 0.0 M
12/2/2017 12/03/2017 10:00 AM 2 0.10 2.5 M 1.2" of new snow, since yesterday afternoon. The new snow seems to have balanced the amount that's been melting off the total depth on ground.
12/11/2017 12/18/2017 8:00 AM 8 0.02 2.0 M We were in a continuous high pressure system and inversion from about Dec 5 through the 15th. We finally got a trace of snow Dec 16-18.



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