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

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

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

More than 100 small earthquakes have been recorded near the Geysers geothermal field in Northern California since just after ...

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

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

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

A groundbreaking study from Virginia Tech warned that three US states are at significant risk of experiencing catastrophic ...

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 ...

A preliminary-magnitude 5.7 earthquake struck off the coast of Northern California on Friday afternoon, but there was no threat of a tsunami, officials said.

The risk of a devastating mega-tsunami from the Cascadia Subduction Zone highlights the need for improved evacuation plans.

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.