Damaging waves could hit between 7 a.m. and 7:30, the National Weather Service says. Scientists hadn’t determined yet the size of the wave.
The timing of when the wave may hit ranges from 7:15 a.m. at Charleston to 7:24 a.m. at Seaside.
A tsunami advisory is in effect for the coast of Washington. That is a step below a warning and means spot damage is possible in harbors and estuaries along beaches.
A tsunami warning also is in effect for California north of Point Conception to the Washington border. An advisory is in effect south of Point Conception.
“Stay away from the beach,” said Bill Steele, a University of Washington seismologist with the Pacific Northwest Seismic Network. “Be smart about it. The water has a lot of power. Pay attention to your local emergency managers.”
The wave is expected after the 8.9-magnitude earthquake off northeastern Japan.
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