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

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

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

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 ...

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

The recent earthquake is a reminder of the seismic volatility that characterizes the area near Eureka. The quake occurred in the vicinity of the Mendocino Triple Junction, a highly active seismic zone ...

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

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?

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.