A section of the San Andreas fault where earthquakes occur regularly may give off a distinct signal before it trembles to life, new research finds. The signal hints at the opening and closing of ...

We all know the San Andreas Fault is out there. Californians first learn about the looming underground threat during ...

For more than a month, the Bay Area has been subjected to a seemingly ceaseless stampede of earthquakes, rattling windows and ...

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, ...

An aerial view of the La Cañada Flintridge foothills shows dust and dirt thrown into the air following a magnitude 5.9 earthquake from Oct. 1, 1987. (George Rose / Getty Images) Monday's magnitude 4.4 ...

A magnitude 3.4 earthquake occurred 16 miles north-northeast of Warner Springs at 6:52 a.m. Friday, briefly producing light shaking in parts of northern San Diego County, the U.S. Geological Survey ...

Earthquakes are notoriously hard to predict, but one consistent earthquake in California—which rumbles every 22 years—provides valuable data for finding warning signs of an impending quake. This ...

The clusters of earthquakes have all been underneath the East Bay suburb of San Ramon, which is close to the Calaveras fault. There were at least 19 earthquakes of magnitude 2 or greater on Monday ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The southern section of California’s San Andreas fault hasn’t experienced a major earthquake in 300 years ...

It has been about three centuries since the last great earthquake on the southern San Andreas Fault, the most treacherous seismic hazard in California. For decades researchers have puzzled over why it ...

Enlarged microscope photo of sedimentary rock that was structurally altered during an earthquake. The slip layer (green portion) was heated during fault movement. The actual field of view is only ...