HUMBOLDT COUNTY, CA - A preliminary 3.4 magnitude quake occurred near Ferndale on Thursday night, according to the U.S.

SAN BERNARDINO COUNTY, CA - A preliminary 2.0 magnitude quake occurred close to Fontana on Friday morning, the U.S.

The fault that triggered a massive earthquake in Myanmar last year is tilted much like California's San Andreas, which can ...

The U.S. Geological Survey detected the shallow quake at 9:18 p.m. about 21.5 miles southwest of central Patterson.

A decade-long California experiment tested earthquake forecasting models against nearly 600 earthquakes. Here's what it found ...

A 3.2-magnitude earthquake hit a California city late on Wednesday. STAY UP TO DATE WITH THE LATEST NEWS BY SUBSCRIBING TO ...

STANISLAUS COUNTY, CA - A preliminary 3.1 magnitude quake occurred near Gustine on Wednesday night, the U.S. Geological ...

A preliminary 2.1 magnitude quake struck near Petrolia on Thursday morning, according to the U.S. Geological Survey.

HUMBOLDT COUNTY, CA - A preliminary 3.3 magnitude quake occurred near Petrolia on Wednesday afternoon, the U.S. Geological ...

RIVERSIDE COUNTY, CA - A preliminary 2.1 magnitude quake occurred near Anza on Wednesday morning, the U.S. Geological Survey ...

TRINITY COUNTY, CA - A preliminary 2.3 magnitude quake struck near Covelo on Wednesday afternoon, the U.S. Geological Survey ...

Beneath Southern California, two of the country's most consequential fault systems have been quietly loading for generations.