About 5% to 10% of all California earthquakes are followed by a larger one within a week, and the probability of a larger quake depends on how much aftershock activity there is, according to the USGS.

An earthquake and dozens of aftershocks rattled Southern Californians starting on Tuesday night and continuing into Wednesday morning. Could a bigger one be on the way? As a general rule, the risk ...

Since their first implementation in Mexico and Japan, earthquake early-warning (EEW) systems have provided critical advance ...

Monday’s 4.4 magnitude earthquake that jolted the Los Angeles area is part of a broader trend of increased seismic activity in Southern California that is likely to continue, according to the ...

An early-warning system on Android phones has detected more than 1,000 earthquakes worldwide since 2021, sometimes giving ...

Magnitude 5.2 earthquake hits San Diego County, felt across Southern California April 14, 2025 4.1 earthquake felt across Southern California, centered near Malibu ...

While rare, Redding does get earthquakes strong enough for us to feel. Here's why Shasta and Siskiyou counties and the north Sacramento Valley shakes.

The U.S. Geological Survey said it wasn’t surprising that a major earthquake hit a California area near the Nevada border — and was felt hundreds of miles away.