San Francisco Bay Area Earthquake: What You Need to Know (2025)

San Francisco Bay Area Shaken by Minor Earthquake

A minor 3.8-magnitude earthquake rattled the San Francisco Bay Area on Sunday, according to the United States Geological Survey (USGS). This tremor was one of several that struck in quick succession, causing a series of minor adjustments along the fault line.

The earthquake occurred at 9:38 a.m. Pacific time, approximately 2 miles southeast of San Ramon, California. Initially, the USGS reported a magnitude of 3.7, but seismologists may revise this figure as they review the data. Additional information collected about the earthquake could prompt USGS scientists to update the shake-severity map, which currently shows the area with a shake intensity of 3 or greater.

Aftershocks, typically minor earthquakes following a larger one, can occur days, weeks, or even years later. These aftershocks can be of equal or larger magnitude to the initial earthquake and may continue to affect already damaged locations. The USGS provides maps and charts showing quakes and aftershocks within 100 miles of the initial earthquake, with data available for up to seven days after the event. All times are in Pacific time, with the latest shake data as of Sunday, November 9, at 12:59 p.m. Eastern, and aftershock data as of Monday, November 10, at 2:24 a.m. Eastern.

This event serves as a reminder of the ongoing seismic activity in the region and the potential for aftershocks, which can have significant impacts on affected areas.

San Francisco Bay Area Earthquake: What You Need to Know (2025)

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