theTRUTH: About Large Earthquakes | Emergency Preparedness | Forums

did someone say cascadia subduction zone?

Seven earthquakes rattled across the Pacific Ocean floor on Sunday night and through Monday.

No damage was reported; the earthquakes were too small to create any tsunami concerns.

Centering about 330 miles west of Salem, the earthquakes struck about 6 miles below the ocean floor at the meeting of the Juan de Fuca and Pacific plates. The Juan de Fuca plate is sliding to the east, slipping under North America at the Cascadia subduction zone.

It's at the Cascadia zone that U.S. Geological Survey geophysicists say we should be watching for the big earthquake that will rattle across the Northwest. On Monday, scientists were unable to say whether the action in the Pacific would have any affect on the Cascadia zone.

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