Several earthquakes strike East Bay; largest being 3.7, USGS says

These come after a cluster of earthquakes in the area, the last few weeks.

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Monday, December 8, 2025
Several earthquakes strike San Ramon; largest being 3.7: USGS

SAN RAMON, Calif. -- A 3.7 earthquake rattled San Ramon on Monday morning, following several earlier small quakes in the area, according to the U.S. Geological Survey.

The latest shaker struck at 9:07 a.m and was centered near Alcosta Boulevard and Canyon Hills Road, about 6 miles deep, the USGS reported.

Another 3.0 temblor shook the area at 5:21 a.m., and several smaller quakes have registered in the area on Monday, ranging from 1.6 to 2.7.

The quakes were located along the Calaveras Fault Zone.

Then, a preliminary 2.9 magnitude earthquake struck Piedmont at 2:55 p.m.

MORE: Magnitude 7.6 quake strikes off Japan's northern coast and triggers a tsunami alert

These come after a cluster of earthquakes in the last few weeks. In November, there were at least 8 small earthquakes near San Ramon, the largest being a 3.8 quake, USGS said.

ABC7's Drew Tuma said on "Midday Live," there have been at least 12 earthquakes in the San Ramon area since Sunday, according to the USGS.

There was no damage reported.

ABC7's Drew Tuma contributed to this report

MAP: Significant San Francisco Bay Area fault lines and strong earthquakes
Zoom in on the map below and compare where you live to the significant faults and where strong earthquakes have struck in the Bay Area.

Stay with ABC7 News for the latest details on this developing story.

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