Fox News has a blurb up:
An earthquake with an estimated magnitude of 5.9 on the Richter scale has hit the Pacific Northwest, rocking the cities of Seattle, Vancouver and Portland, Ore.
The United States Geological Survey in Denver estimated that the epicenter was 8 miles south of Corvallis, Ore.
A tsunami warning has been issued for the the West Coast and Alaska.
Other news sites say 6.0 or 6.2, though.