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Underwater quake recorded off Ventura County

November 15, 2009 |  4:39 pm

USGS earthquake map of Southern California dated Sunday, Nov. 14 at 8:30 p.m. The blue squares represent tremblors in the last day and the yellow mark earthquakes in the last week. A 4.3 magnitude earthquake rattled the ocean floor Sunday afternoon 13 miles east-southeast of San Nicolas Island in Ventura County.

The temblor struck at 2:45 p.m., according to the U.S. Geological Survey. A 3.6 magnitude aftershock occurred three minutes later.

San Nicolas Island, the most remote of the Channel Islands, has no official population and is used by the Navy as a weapons testing site. There were no reports of damage.

Nick Scheckel, a seismic analyst at Caltech, said the quake occurred more than three miles below the ocean floor and was felt weakly in Santa Monica and Oxnard.

--Alan Zarembo

Map: USGS earthquake map of Southern California dated Sunday, Nov. 14 at 8:30 p.m. The blue squares represent tremblors in the last day and the yellow mark earthquakes in the last week. Credit: USGS

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