CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.4 magnitude quake shook near San Ramon ...

CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.4 magnitude quake shook close to San Ramon ...

California has been hit by an earthquake swarm for the fourth day in a row. Residents have been experiencing earthquake ...

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

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

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

The quake came only eight days after three earthquakes shook the area in the course of about 100 minutes. More than 30 quakes ...

The ShakeAlert system that warns about imminent shaking arriving from earthquakes sent a false alarm across California on Thursday morning for a magnitude 5.9 temblor that did not happen.

A 3.3 magnitude earthquake struck off the coast of Orange County, California, causing weak to light shaking to be felt as far ...

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

An alert sent to people across California warning about a strong earthquake striking Northern Nevada on Thursday morning was sent in error, officials said.