A small earthquake jolted the East Bay Thursday morning, as people across the Bay Area were preparing for the annual Great ShakeOut earthquake drill.

The U.S. Geological Survey reported that an earthquake with a preliminary magnitude of 3.1 struck the Hayward Fault in the Berkeley area at 9:23 a.m.

Reports by visitors to the USGS website from the East Bay and parts of San Francisco reported light shaking. There are no immediate reports of damage or injuries.

Map of earthquake that struck the Berkeley area on Oct. 16, 2025, the same day as the Great California ShakeOut drill. U.S. Geological Survey

The earthquake took place about an hour before the annual Great California ShakeOut , in which people across the state are participating in an earthquake preparedness drill at schools, wo

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