California Earthquake 2026 explains what happened, where the quake was felt, aftershocks, risks, and how residents can prepare for future earthquakes.

Some of California’s biggest earthquakes have occurred on lesser-known fault areas, including both the Ridgecrest quake and the magnitude 6.7 Northridge quake in 1994. And in the Bay Area, geologists have identified the Hayward Fault in the East Bay and the Rodgers Creek Fault in Sonoma County as having the potential to produce major quakes.

A swarm of a half-dozen earthquakes reaching up to magnitude 2.9 rattled San Ramon in California near San Francisco, the U.S. Geological Survey reports. The other quakes in Saturday’s swarm ranged from magnitude 1.2 to 2.8, according to the USGS.

For more than a month, the Bay Area has been subjected to a seemingly ceaseless stampede of earthquakes — the latest in a series of seismic swarms that have rattled windows and raised fears across California. But while experts acknowledge that some major ...

Tremors beneath Northern California show hidden plate movement, helping scientists better understand where future big earthquakes may occur.

Earthquake swarms are clusters of small quakes caused by complex fault systems and underground stress, and scientists say they rarely signal that a larger earthquake is imminent or make one less

A small town in California was hit by earthquakes once every 22 years for over a century, setting the stage for a major seismic experiment in the 1980s and 90s. But the quake ended up being 11 years late.

In recent days, California has been shaken by a series of earthquakes, underscoring the region's ongoing seismic vulnerability. Five earthquakes were recorded over a short period