In California's East Bay, a recent swarm of small earthquakes has pushed long-standing seismic risks back into public view. Since early November 2025, at least 90 minor quakes have been recorded around San Ramon,

A swarm of at least a dozen earthquakes reaching up to magnitude 3.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports.

SAN RAMON — A cluster of earthquakes struck the San Ramon area Friday night, continuing a pattern of seismic activity in recent weeks, according to the U.S. Geological Survey. Things kicked off at 7:41 p.m. with a magnitude 2.5 centered 3.1 miles southeast of the city.

Had there been a real 5.9 earthquake Thursday morning 15 miles east of Lake Tahoe in rural Nevada, Bay Area residents might have felt some mild shaking, particularly people living on softer soils, such as areas in the East Bay near the Delta, Rowe said.

A series of earthquakes rattled the San Ramon area Friday night, with the largest being a preliminary magnitude 4.0, according to the U.S. Geological Survey.

SAN BENITO COUNTY, CA - A 3.5 magnitude quake was reported near Ridgemark on Sunday around midday, according to the U.S. Geological Survey.

The United States Geological Survey put out a false alarm for a 5.9 earthquake east of Dayton, Nevada, on Thursday morning.

Several earthquakes, the largest measured at magnitude-3.3, were reported Thursday morning in Ventura County. The earthquakes were centered near Fillmore, about 25 miles northeast of Ventura. Shaking was reported in Fillmore, Moorpark, Ventura and Santa Paula.

No reports of major injuries or structural damage have emerged, and authorities have not issued a tsunami warning.

On December 4, 2025, millions of cell phones in California and Nevada buzzed with ShakeAlert warnings of a magnitude 5.9 earthquake near Dayton, Nevada. Emergency teams mobilized, 911 lines overloaded,