SANTA CLARA COUNTY, CA - Monday morning, a preliminary 2.0 magnitude quake was registered near Gilroy, according to the U.S.

HUMBOLDT COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.7 magnitude quake occurred close to Petrolia ...

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

California has no shortage of geological marvels, many tucked within one of the state's national parks. But to view a ...

Geologist Kirt Kempter tells the 300-million-year story of the Abiquiú area while exploring the boundary between the Rio ...

Sonoma County was hit by three earthquakes within a little more than half an hour Sunday, the largest one having a ...

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 ...

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

A magnitude 4.0 earthquake was reported Sunday afternoon at 3:30 p.m. three miles from Santa Rosa, according to the U.S.

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

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, ...