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, ...

SONOMA COUNTY, CA - A preliminary 2.2 magnitude quake was registered close to The Geysers Saturday afternoon, according to ...

CONTRA COSTA COUNTY, CA - A preliminary 2.3 magnitude quake was detected close to San Ramon Saturday afternoon, the U.S. Geological Survey reported.

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

An international team of researchers led by The University of New Mexico set out to understand how these mature faults break ...

In the latest report prepared by a Japanese government earthquake task force, it was estimated that up to 298,000 people ...

The first jolt hit before dawn, a 2.9-magnitude quake under the Tri-Valley that woke light sleepers and set off a daylong sequence of shaking across California’s East Bay. Over the next eight hours on ...

A landmark deal with Pacific Gas & Electric will extend the life of the state's remaining nuclear power plant in exchange for ...

“Losing nine seismic monitoring stations can provide a really big geographic gap, and then it may take minutes for other ...

With natural disasters striking communities across the U.S. at an accelerating pace, the question of how to build homes that ...