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

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

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

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

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

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

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.

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

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 ...