Bulletin: ...Patchy Areas of Dense Fog Developing this Morning... Areas of fog...some locally dense...are developing across portions of the area. Visibilities have ...

Each Yellowstone earthquake swarm is unique, lasting minutes to weeks and including a few to thousands of earthquakes that might or might not move around over time. With long-term investments in ...

Elastic Rebound Theory This gradual accumulation and release of stress and strain is now referred to as the "elastic rebound ...

Scientists are investigating the cause of recent regional earthquake activity that affected Kentucky over the weekend. A small 2.8 magnitude earthquake was recorded in Nicholasville in the early ...

— 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, ...

A swarm of small earthquakes has been rattling a Bay Area city for more than a week in Northern California. More than 90 quakes have hit the San Ramon area since Nov. 9, the U.S. Geological Survey ...

Why the ground shakes under Redding and Shasta County, and why it will keep shaking. Why Redding earthquakes may feel different from Eureka's in Humboldt County. Earthquakes that shake the ground ...

According to the USGS, the first quake was a magnitude 4.6 event at approximately 27 kilometers east-northeast of Hualien ...