A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological ...

On Monday morning, around 30 minor earthquakes erupted in a swarm near the Geysers geothermal field south of Clear Lake. The day before, seven quakes rattled Sonoma County, including a 4.0 quake. The ...

SAN LUIS OBISPO COUNTY, CA - A 2.2 magnitude quake was registered close to Templeton Friday morning, the U.S. Geological ...

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

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, ...

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 ...

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

A preliminary 4.0-magnitude earthquake struck California’s Sonoma County on Sunday afternoon, according to the US Geological ...

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

For millions of Californians, the ground did not simply shake once and fall silent. It pulsed again and again over roughly ...