Freeze Warnings take effect at 11 p.m. tonight across much of eastern Washington and northern and eastern Oregon, with lows of 27 to 32 degrees in the Yakima Valley, Tri-Cities, Moses Lake and Okanogan Valley.
The warnings run until 9 a.m. PDT Tuesday, Oct. 13. They were upgraded from Freeze Watches.
Frost and freeze conditions could kill crops and sensitive plants and damage unprotected outdoor plumbing.
Washington: Yakima, Tri-Cities and Walla Walla
The National Weather Service in Pendleton issued the warnings at 10:27 a.m. PDT Monday. They run 11 p.m. to 9 a.m.
Areas: the Yakima Valley, Kittitas Valley, Lower Columbia Basin, and the foothills of the Blue Mountains in Washington.
Lows: as low as 30 degrees.
Communities: Yakima, Ellensburg, Toppenish, Sunnyside, Prosser, the Tri-Cities, Walla Walla, Dayton, Waitsburg, Naches, Thorp and Connell.
The Simcoe Highlands, including Goldendale and Bickleton, have lows as low as 31 degrees.
NWS Pendleton flagged the cold Sunday, before the warnings were issued.
Central and Northern Washington
NWS Spokane’s Freeze Warning also runs 11 p.m. to 9 a.m. PDT.
Areas: the Moses Lake area, Okanogan Valley, and Lower Garfield and Asotin counties.
Lows: 29 to 32 degrees, and locally as low as 27 degrees in outlying areas around Moses Lake. Higher benches could be warmer, at 33 to 35.
Communities: Moses Lake, Ephrata, Othello, Quincy, Omak, Okanogan, Brewster, Bridgeport, Tonasket, Oroville, Nespelem, Clarkston and Pomeroy.
Oregon: Coldest in La Grande and Wallowa County
The Oregon warnings also run 11 p.m. to 9 a.m. PDT.
Grande Ronde Valley: as low as 21 degrees, including La Grande, Union, Elgin and Cove.
Wallowa County: as low as 25 degrees, including Joseph, Enterprise and Wallowa.
Lower Columbia Basin, North Central Oregon and Blue Mountain foothills: as low as 30 degrees, including Pendleton, Hermiston, Boardman, Heppner, Condon, Fossil, Maupin, Dufur, Moro and Pilot Rock.
In the Upper Hood River Valley, NWS Portland’s Freeze Warning runs midnight to 8 a.m., with lows of 28 to 32. The coldest readings are expected near Parkdale. Odell is also included.
Safety Reminders
Take steps now to protect tender plants from the cold.
Cover sensitive plants with cloth, and move potted plants indoors.
Protect outdoor pipes and irrigation lines from freezing.
Bring pets inside, and provide shelter for livestock.
For live updates, follow NWS Pendleton, NWS Spokane and NWS Portland on X.
