Earthquakes are unsettling, but a swarm of earthquakes can be downright scary, and some San Francisco residents are worried the Big One is near.

CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.2 magnitude quake struck close to San Ramon on Thursday around midnight.

Seventy-five tremors hit San Ramon, a small California city on 2. Here's what caused the swarm and why it isn't entirely ...

An earthquake with a revised magnitude of 4.3 struck northern Sonoma County Saturday morning, followed by two smaller aftershocks. The first quake was recorded at 9:22 a.m., about 15 miles ...

The temblor struck about 3.7 miles north-northwest of the Geysers, close to Healdsburg in the North Bay. Originally the quake ...

A rapid-fire sequence of at least 33 earthquakes struck near San Ramon, California, within roughly 90 minutes on February 2, 2026, topped by a magnitude 4.2 event that rattled the eastern San ...

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A magnitude 3.5 earthquake struck Sunday night just off the Southern California coast near Catalina Island.

The earthquake was felt mainly in San Bernardino and Riverside counties. There were no reports of injuries or damage. When it ...

SANTA CLARA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.7 magnitude quake rattled close to San Martin at midday on Tuesday.