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 ...

A 3.1 magnitude earthquake struck California’s Hayward Fault — a fault line experts call the most dangerous in America. Over ...

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

Down in California, the San Andreas Fault marks the boundary where the North American and Pacific plates are sliding past ...

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

Millions of Californians have signed up to drop, cover and hold on Thursday for the Great California ShakeOut. The annual ...

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

The annual earthquake drill that was sent out on Thursday at 10:16 a.m. is meant to make sure we're all ready for when "the ...

The Great California Shakeout is coming. The event is an annual earthquake drill, aimed at increasing public awareness about ...

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

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