A magnitude 3.1 earthquake struck in Berkeley, just east of Cal Memorial Stadium, on Thursday morning at 9:23 a.m.
According to the USGS, the epicenter was on the UC Berkeley Campus, 800 feet north east of the Cal Memorial Stadium, less than an hour before the Great California Shake Out earthquake drill.
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Stay with ABC7 News for updates on this developing story.
Author's summary: A 3.1 magnitude earthquake hit Berkeley Thursday morning.