What lies beneath Fickle Hill in northern California? Maybe the answer to an earthquake mystery that has puzzled ...

Scientists link a magnitude 6.5 earthquake that shook Humboldt Bay, California, 71 years ago to the "locked" Cascadia ...

SONOMA COUNTY, CA - A preliminary 2.1 magnitude quake was reported close to Cobb Wednesday night, according to the U.S.

Seismic retrofit program offers up to $3,000 for older homes in over 1,100 ZIP Codes, now expanding to include rentals and other non-owner-occupied residential properties ...

An earthquake with a preliminary magnitude of 3.1 struck in Colusa County on Wednesday, the U.S. Geological Survey said.

The Diablo Canyon nuclear plant is in the midst of a relicensing process that, if successful, will keep it running for ...

A stretch of unusually hot weather combined with exceptionally dry vegetation will elevate the risk of wildfire.

Most people in San Diego County don’t worry about earthquakes until the earth beneath them starts shaking. Just ask folks out in Julian who were jolted by a quake back in April. Up until Oct. 1, ...

Californians can now apply to the California Earthquake Authority's Brace + Bolt grant program, which gives money to homeowners, and now landlords, to strengthen homes against earthquake damage.

The San Jose Earthquake unveiled the latest World Cup-themed mural to be displayed in the South Bay ahead of the FIFA 2026 World Cup.

In March, the observatory said it had measured “significantly elevated volcanic gas emissions" from Mount Spurr and said signs indicated an eruption was likely, though not certa ...