Just 50 miles from downtown Los Angeles, a critical junction where two of California's most powerful fault systems meet has ...

The ground beneath your feet is rarely as still as it seems. The United States sits atop a restless tectonic landscape, and ...

A major Hayward fault quake could shake some Bay Area communities harder than expected because of the ground beneath them, new federal simulations show.

NAPA, Calif. (KGO) -- Bigger and stronger than first thought. Scientists uncover new findings about the fault line that caused the 6.0 earthquake in Napa nearly a decade ago. The earthquake in 2014 ...

Scientists say the San Andreas and San Jacinto faults are more stressed than at any time in 1,000 years, raising questions ...

A 5.1 magnitude earthquake centered near San Jose on Tuesday occurred along the Calaveras Fault, not the most active fault in the Bay Area. It was the strongest quake along that fault line since ...

Here’s what you’ll learn when you read this story: A new study published in the journal Geophysical Research Letters, however, tells a different story. The research team—led by experts from the ...

While analyzing strong-motion data close to fault lines, a group of researchers at Kyoto University noticed something unexpected: a negative phase in the waveforms, a pattern that did not conform ...