— James Webb, Mineral Point, Wis. A Chuck DeMets, professor of geophysics at the University of Wisconsin-Madison: Most earthquakes occur when a geological fault, a fracture within the Earth’s crust, ...

ORANGE COUNTY, CA - the U.S. Geological Survey reported that a 2.6 magnitude quake shook close to Huntington Beach Monday ...

HUMBOLDT COUNTY, CA - According to the U.S. Geological Survey, a 3.5 magnitude quake occurred near Redway Sunday afternoon.

Mount Rainier experienced its largest earthquake swarm since 2009 on Tuesday. USGS reported hundreds of small quakes under the surface near the stratovolcano's summit . The agency said there was no ...

Konstantine Panegyres does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...