Southern California could be inching closer to the kind of major earthquake scientists have long expected, according to new research showing stress continues to build along two of the state’s most ...

Two earthquakes rocked California in back-to-back days as fears about two major fault lines have been “real and growing.” A magnitude 4.1 quake hit just outside of Frazier Park around 3:38 a.m. Sunday ...

There is no easy explanation for how the San Andreas fault, responsible for some of America's most powerful earthquakes, has ...

Back-to-back earthquakes rocked the area north of Los Angeles near two of California's most significant faults — including ...

Los Angeles could see a major earthquake ...

Researchers modeled 1,000 years of earthquake history along Southern California's San Andreas and San Jacinto faults. What they found was troubling. Reading time 4 minutes No U.S. region is at greater ...

Earthquake experts have long warned of a looming "Big One" that will have devastating impacts. A study says warning signs continue to grow in 2026.

What does that mean for earthquake risk?

California sits on an active plate boundary where the Pacific and North American plates grind past each other, producing frequent earthquakes.

The ground north and east of Los Angeles holds one of Southern California’s most uneasy meeting points. At Cajon Pass, the San Andreas and San Jacinto fault systems crowd together in a tectonic ...

California isn’t exactly where it used to be. Here’s how earthquakes have gradually reshaped the state over time.

They’re quaking in their boots. Some seismologists are literally shaking after Southern California fault lines were rocked by the second significant earthquake in less than two days — sparking fears ...