"We believe all the victims were in vehicles when the storm came through, " Canadian County Undersheriff Chris West said Saturday.

NPR: Frightened Okla. Residents Opt To Flee Tornadoes

Roadways around the area were crumbling because of water, especially near an intersection in northeastern Oklahoma City and in Canadian County south of I-40, between Mustang and Yukon.

NPR: Frightened Okla. Residents Opt To Flee Tornadoes

They settled well north of Seattle, on Samish Bay in the Skagit County town of Blanchard, just thirty miles from the Canadian border.

NPR: Edward R. Murrow: Broadcasting History