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 ...

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

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

Most people think California when they hear "earthquake," and honestly, they're not wrong. But here's the thing: seismic ...

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 series of earthquakes rattled California’s Bay Area near Gilroy on Wednesday, according to the U.S. Geological Survey. The largest was a magnitude 4.0 quake centered about 8 kilometers east of ...

Around 90 small earthquakes have struck near San Ramon in the East Bay this month. It’s at least the sixth time a series of tiny quakes has lit up that area since 1970, including the most recent swarm ...

In compliance with adopting California’s new building standards code, on Nov. 19 Sonoma City Council considered provisions to the law that are locally-specific to Sonoma’s conditions, ...