HUMBOLDT COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.6 magnitude quake shook close to Petrolia ...

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 ...

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

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

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

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

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

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