SONOMA COUNTY, CA - Friday morning, a preliminary 2.2 magnitude quake was reported close to Cobb, according to the U.S.

HUMBOLDT COUNTY, CA - A 4.7 magnitude quake was registered close to Petrolia Thursday morning, the U.S. Geological Survey ...

A series of earthquakes rocked a Bay Area city on Feb. 2. Did you feel it? San Ramon was hit by a cluster of quakes starting ...

More than 70 percent of Californians live within 30 miles of a major fault.

Visiting California? Learn how common earthquakes really are, what experts say about "the Big One," and how you can stay prepared during your trip.

Did you feel them? A 4.2 earthquake struck near San Ramon Monday morning amid a string of over 30 temblors in the area, the U.S. Geological Survey said.

An ongoing string of more than a dozen earthquakes in less than 90 minutes early Monday ended what had been some recent calm ...

A cluster of earthquakes is rattling the San Francisco Bay Area centered within the city of San Ramon, including a magnitude ...

More than a dozen earthquakes struck near San Ramon on Monday morning, according to the United States Geological Survey.

The largest of the 19 earthquakes measured by the U.S. Geological Survey was a magnitude 4.2 shaker that was centered about ...

Data from the USGS shows the seismic events have ranged in strength from 2.5 up to 4.2 in magnitude.

As the Seattle Seahawks and New England Patriots gear up for Super Bowl 60 in Santa Clara, California, a 4.2 earthquake ...