Strong M6.3 Quake Off Oregon Raises Concern of Cascadia Subduction Zone Rupture

First published at 17:57 UTC on August 31st, 2019.
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We haven’t seen this sort of seismic activity on the west coast in a very long time. Last month, two monster earthquakes in southern California were followed by thousands upon thousands of aftershocks, and the shaking still hasn’t stopped. Scienti…

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