While California is no stranger to earthquakes, this 6.1-magnitude event was the largest to hit the region since the 1989 Loma Prieta quake that had a magnitude of 6.9.

NORTHERN CALIFORNIA (KABC) -- An earthquake with a preliminary magnitude of 5.7 struck 17 miles west of Petrolia in Northern California on Wednesday. The quake hit shortly after 1 p.m. about ...

HUMBOLDT COUNTY, Calif. (KGO) -- A large earthquake struck off the coast of Petrolia, a community in Humboldt County, in Northern California USGS reports. The quake struck at 3:08 p.m. with a ...

Tsunami waves have reached Hawaii and California after a powerful earthquake occurred off the coast of Russia. Here's what you need to know about the tsunami's impact and how long it might last.

Tsunami alerts were issued for Alaska and Hawaii on Tuesday after a major, 8.8 magnitude earthquake struck off the coast of ...

Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data from the U.S. Geological Survey.

Experts have issued an urgent warning regarding a supposed upcoming earthquake known as 'The Big One'. Scientists explained that the earthquake could have a magnitude of around 7.7 on the Richter ...