In March, the observatory said it had measured “significantly elevated volcanic gas emissions" from Mount Spurr and said ...

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

MONTEREY COUNTY, CA - A 2.5 magnitude quake was registered near New Idria Saturday evening, the U.S. Geological Survey ...

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

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, ...

According to the U.S. Geological Survey, a preliminary 2.4 magnitude quake struck near Petrolia Wednesday morning.

Californians can now apply to the California Earthquake Authority's Brace + Bolt grant program, which gives money to ...

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

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

Simulations still can't predict exactly when an earthquake will happen, but with the incredible processing power of modern ...

The Cape Mendocino Lighthouse at Shelter Cove stands as perhaps the most enchanting maritime sentinel you’ve yet to encounter ...

Multiple earthquakes shook parts of California over the weekend, including a temblor in San Bernardino County. Coso Junction in Inyo County experienced back-to-back quakes beginning at 4:21 p.m. on ...