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Washington State Earthquake History. Major earthquakes in Washington since 1880 (source: USGS) On December 14, 1872, a strong earthquake in the Cascade Mountains caused damage at Victoria, British Columbia, and Seattle. It was felt over a very large area, about 390,000 square kilometers, extending as far south as Eugene, Oregon, and north into British Columbia, probably even into Alaska.
Courtesy of NOAA. On the evening of March 28, 1964 (UTC), without warning, the largest recorded earthquake in U.S. history struck Alaskaâs Prince William Sound. The devastating 9.2 magnitude earthquake and subsequent tsunamis ravaged coastal communities and took over 139 lives.