Two earthquakes struck different parts of Northern California early Thursday morning, according to the U.S. Geological Survey ...

Since Thursday, at least 131 earthquakes have been recorded — as small as magnitude 0.2 and as big as magnitude 4 — in the ...

More than 100 small earthquakes have been recorded near the Geysers geothermal field in Northern California since just after midnight Thursday, according to the U.S. Geological Survey.

A magnitude 8.8 monster off the eastern coast of Russia threatened tens of millions of people with a tsunami risk. So why did Tuesday's mega-quake cause so little harm?

An earthquake swarm in Northern California early Thursday was another round of recurring temblors in a seismically active ...

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.

UPPER LAKE, Calif. (KABC) -- A 5.1-magnitude earthquake struck north of the Bay Area on Tuesday, according to the United States Geological Survey. The earthquake struck near Upper Lake, California ...

An earthquake with a preliminary magnitude of 5.7 struck 17 miles west of Petrolia in Northern California on Wednesday.

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