An earthquake hits the San Francisco Bay Area on October 17, 1989, killing 67 people and causing more than $5 billion in damages. Though this was one of the most powerful and destructive earthquakes ...

Residents of the US’s West Coast have long feared “The Big One” – the apparently inevitable massive earthquake that will one day hit where the Pacific tectonic plate meets its North American neighbor.

The Helena Valley sits atop a variety of different sediments and rocks, making it particularly susceptible to earthquake ...

San Andreas, Cascadia faults could combine to produce back-to-back earthquake disasters, new research suggests – Nation and ...

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

A massive Pacific Northwest earthquake could trigger a devastating second quake on California's San Andreas Fault, a new study reveals. This challenge ...

At San Fernando Middle School, students were evacuated from classrooms and went to the “safety” of their playing field.

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 preliminary 3.1 magnitude earthquake struck near Berkeley Thursday morning, according to the United States Geological ...

Millions of residents, students and office workers in Los Angeles and Orange counties and across the state took part in the 17th annual Great California ShakeOut drill Thursday, following instructions ...

Millions of residents, students and office workers in Los Angeles and Orange counties and across the state practiced their "drop, cover and hold" steps as part of the Great California ShakeOut.