o the residents of Washington that we live in earthquake country, more than 1,000 earthquakes are registered in Washingt!
             on State each year, and all regions of Washington have a history of earthquake history.
             (This map shows the Cascadia Subduction Zone where plates meet under the Pacific Ocean. It also shows the
             volcanoes indicated by the triangles.)
             IMAGE: Simon Peacock/Arizona State University
             The Puget Sound region is concerned about "The Big One" referring to an extremely large earthquake caused by the rupture of a huge offshore fault beneath the ocean. What most people do not know is we are also very susceptible to a much scarier quake called an inraslab earthquake.
             A statement from Arizona State University geologist Simon M. Peacock brings up the issue that intraslab earthquakes are less understood and usually occur closer to major population centers than larger off shore earthquakes. The earthquake April 13, 1949 was an inraslab quake with a magnitude of 7.1. It was centered between Olympia and Tacoma. This shaker killed eight people and left dozens with serious injuries. The ground shook for thirty seconds and effected Washington, northwest Oregon and south along the coast to Cape Blanco, in southwest
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