A magnitude 3.6 earthquake that struck around 11:56 a.m. near the Contra Costa County town of Crockett was followed by a 2.7 aftershock five minutes later, according to the U.S. Geological Survey.
The shocks were centered about 1 mile north of Crockett at a depth of around 6 miles.
For the latest earthquake activity in the Bay Area, visit our real-time NBC Bay Area News Quake Map here.
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