San Ramon was hit by more than 90 tremors in mid-November.

California's seismic risk is increasing with supershear earthquakes, which are faster and more destructive than typical ...

SONOMA COUNTY, CA - According to the U.S. Geological Survey, a 4.2 magnitude quake occurred close to Rohnert Park Sunday ...

SONOMA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.1 magnitude quake struck close to Kenwood Sunday ...

A magnitude 4.0 earthquake Sunday afternoon three miles from Santa Rosa was followed a few minutes later by magnitude 3.1 and 3.4 temblors.

Alerts for the initial quake were triggered as far away as San Francisco ...

The federal government and earthquake experts blamed a technical glitch for the alert that sent warnings hundreds of miles ...

Major quakes in Japan and Alaska along with a spate of smaller earthquakes in California this fall make folks ask, is the Big ...

The San Jacinto Fault, considered part of the San Andreas Fault system, has a 5% chance of magnitude 6.7 or larger earthquakes. The line begins at Cajun Pass and runs southeast through San Bernardino, ...

The ShakeAlert system that warns about imminent shaking arriving from earthquakes sent a false alarm across California on ...

A shake alert went out over the U.S. Geological Survey's early warning system on Dec. 4, warning that a 5.9 earthquake near ...

A minor, 3.1-magnitude earthquake struck in Southern California on Thursday, according to the United States Geological Survey ...