An increase in seismicity—marked by frequent tremors—was observed recently at Alaska's Iliamna Volcano, which last erupted in ...

A 3.3-magnitude earthquake shook the Arcata area in Northern California, the U.S. Geological Survey reported. The 14-mile deep quake hit 2 miles from Arcata at 9:50 p.m. Sunday, June 22, according to ...

These neighborhoods join several others in the Fresno-Clovis area already designated as “moderate” or “high” fire severity ...

Landslides, earthquakes, and subduction faults could generate 1,000-foot mega-tsunamis, wiping coastal communities off the ...

Near-shore tsunamis, those triggered by earthquakes just off the coast, could pose a particularly dire risk for California’s ...

A near-certain disaster looms for California, but there are real things people can do to prepare. Here's what to know about the risks.

John Halldorson knows the best way to keep people safe after an earthquake is to prepare communities beforehand.

Historic earthquakes have caused billions of dollars in damage, with significant seismic events presenting a hazard to both life ... Unsurprisingly, California tops the list, with San Francisco ...

A series of quakes also struck offshore in northwestern California. A map from the ... is known as 'earthquake country' and residents should be aware of earthquake hazards and take steps to ...

The California Geological Survey’s Tsunami Hazard Area Map clearly defines tsunami zones ... was issued in response to a magnitude-9.1 earthquake that struck Japan in 2011, also know as the ...