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 4.0 earthquake was widely felt in the Glen Ellen area of Sonoma Valley yesterday, and was followed by a smaller aftershocks ...

The clusters of earthquakes have all been underneath the East Bay suburb of San Ramon, which is close to the Calaveras fault.

A magnitude 4.0 earthquake struck Northern California on Wednesday at 6:18 a.m., about 5 miles east of Gilroy, the USGS reported. Tremors were also felt recently in Paso Robles, Atascadero, and ...

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

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

Over the next three years, researchers—including students—will continue to evaluate the cables’ ability to monitor seismic ...

VENTURA COUNTY, CA - the U.S. Geological Survey reported that a 3.6 magnitude quake occurred close to Fillmore Saturday ...

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

A 3.7 earthquake rattled San Ramon on Monday morning, following several earlier small quakes in the area, according to the ...

CONTRA COSTA COUNTY, CA - A preliminary 2.3 magnitude quake was recorded near San Ramon Monday morning, according to the U.S.

Thursday's non-quake highlighted the need for better earthquake-warning tools. Three western states have a system in place, ...