SONOMA COUNTY, CA - A preliminary 2.3 magnitude quake was recorded close to The Geysers Tuesday morning, the U.S. Geological ...

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 ...

A total of 980,458 participants were registered in San Diego to stop everything for a minute to "drop, cover and hold on" at ...

The most widespread way is through Wireless Emergency Alerts (WEA), which sends loud alerts to all cellphones. If an ...

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

Millions of Californians are set to "Drop, Cover, and Hold On" on Thursday as part of the annual Great California ShakeOut ...

In the Bay Area, BART plans to automatically slow down its trains and have them come to a brief stop, as the system is ...

OSU researchers find Cascadia Subduction Zone and San Andreas Fault may be synchronized — with the potential for quakes on ...

An earthquake simulator called the Shake Trailer is making a tour of the state this week to help people prepare for a massive ...

The Great ShakeOut takes place on the third Thursday of every October. The event is part of a global earthquake drill.

Loma Prieta earthquake, George Washington Bridge opening, Yom Kippur ceasefire talks, and iconic Olympic moments.