California earthquake felt across Bay Area

A California earthquake measuring magnitude 3.6 was felt most strongly in the East Bay and Peninsula regions, according to the U.S. Geological Survey.

It was followed this morning by a  2.7 quake reported near Yorba Linda in Orange County.

But the Bay Area quake was significantly larger and felt over a larger area.

According to the USGS's  Did You Feel It? map, hundreds of people signed in to report the Bay Area temblor. Many were in such cities as Oakland, San Leandro, Burlingame, Alameda, San Francisco and Castro Valley.

The quake, which struck at 11:36 p.m., appeared to be centered on the Hayward Fault about six miles south of Oakland. A magnitude 2.3 quake rolled through about five minutes later. 

Doug Sovern, a reporter for KCBS 740 AM, said in a tweet: "Quick hard shake of the house here on Berkeley-Oakland border." He said the quake  lasted for only two or three seconds. "Nice adrenaline boost!" he tweeted.

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-- Rong-Gong Lin II

Photo: A map showing recent seismic activity. Credit: Screenshot /ANSS Website.