A tsunami watch for the coastal areas of California, Oregon and Washington state as well as British Columbia and Alaska has been upgraded to a tsunami advisory.
Tsunami waves can be expected between 11:40 and 11:55 p.m.
Wave heights on Long Beach, Wash., are expected to be less than a foot, according to the National Weather Service, Portland office.
No wave height information is available yet for Seaside and Newport, Ore., but residents should expect strong currents and dangerous waves along the Pacific Coast.
The advisory follows an 8.8 magnitude earthquake off the coast of Russia.