Dozens of Aftershocks Reported From 6.9 Quake Off NorCal Coast

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Dozens of aftershocks have occurred since Sunday’s magnitude-6.9 earthquake that rattled Northern California, the state’s largest temblor in nearly a decade.


An earthquake with a preliminary magnitude of 6.9 struck off the coast of Northern California on Sunday, March 9, 2014. (Credit: USGS)

The largest of the aftershocks, near Ferndale in Humboldt County, measured a magnitude 4.5, and officials expected them to continue for several days. Overall, the aftershocks have been getting smaller and less frequent.

Sunday’s quake caused no damage or injuries because it was centered 50 miles off the coast of Eureka and occurred at a depth of “10 miles beneath the Pacific seabed,” according to the U.S. Geological Survey.

By the time the seismic energy reached the shore, it had dissipated significantly. The USGS said the North Coast felt only moderate to light shaking.

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