A major earthquake hasn't struck any of California's biggest cities in more than three decades, but the "Big One" is a matter ...

An earthquake with a preliminary magnitude of 3.1 shook the East Bay on Thursday morning, according to the United States ...

SAN BERNARDINO COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.0 magnitude quake occurred close to Loma ...

Oakland officials participated in "The Great California Shakeout" on Thursday morning and called on members of the public to ...

Supershear earthquakes are more common than previously believed, some scientists say — carrying potentially profound risk for ...

A California Geological Survey map released earlier this year depicts just how intense and damaging the shaking from future earthquakes will be across the state, revealing where the threat is most ...

Are you prepared for an earthquake? The California Office of Emergency Services is making sure you are. Since California is ...

These are two very different fault systems, but the sediment record suggests that in the past, at least three San Andreas ...

Randy Baxter holds on for dear life as a simulator shows him just how powerful a magnitude 7 earthquake can be.

A 3.1-magnitude earthquake struck Northern California, the U.S. Geological Survey reported. /iStockphoto A 3.1-magnitude earthquake hit the San Francisco Bay Area of Northern California, the U.S.