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

A series of more than 100 earthquakes has hit Northern California, shaking up the Geysers geothermal steam field in Sonoma ...

Southern Washington, northern Oregon, and northern California are the regions which are most vulnerable to flooding from a ...

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

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

A series of moderate to minor earthquakes struck near the geologically active area in Northern California known as The ...

Two earthquakes struck different parts of Northern California early Thursday morning, according to the U.S. Geological Survey. The first, a 4.0-magnitude quake, hit at 5:48 a.m. about 5 miles ...

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

LOS ANGELES — One of the world's strongest earthquakes struck Russia's Far East early Wednesday, an 8.8-magnitude temblor that caused a tsunami in the northern Pacific region and prompted warnings for ...

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. One quake hit Rialto, California, in the ...