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 ...

Cajon Pass may allow an earthquake to occur along two fault lines simultaneously. | Credit: Illustration by Julia Wytrazek / Getty Images California is tense, or at least its fault lines are. The ...

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 ...

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

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

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 ...

According to the study, both fault systems have reached exceptionally high stress levels due to centuries of tectonic strain.

Researchers found in a new study that California’s San Andreas and San Jacinto tectonic faults are at their highest stress levels in 1,000 years. Lead author Liliane Burkhard said in a release from ...

New research finds the San Andreas and San Jacinto faults in Southern California are more stressed now than at any time in 1,000 years, raising long-term earthquake risk for millions. Scientists ...

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 ...