SONOMA COUNTY, CA - the U.S. Geological Survey reported that a preliminary 2.9 magnitude quake rattled near The Geysers ...

HUMBOLDT COUNTY, CA - A 2.6 magnitude quake was detected close to Petrolia Sunday night, the U.S. Geological Survey reported.

A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological ...

The quake came only eight days after three earthquakes shook the area in the course of about 100 minutes. More than 30 quakes ...

On Monday morning, around 30 minor earthquakes erupted in a swarm near the Geysers geothermal field south of Clear Lake. The day before, seven quakes rattled Sonoma County, including a 4.0 quake. The ...

California's seismic risk is increasing with supershear earthquakes, which are faster and more destructive than typical ...

The federal government and earthquake experts blamed a technical glitch for the alert that sent warnings hundreds of miles ...

A rare, ultra-long earthquake in Myanmar revealed that mature faults can deliver their full force directly to the surface.

A rare earthquake in Myanmar revealed how a long, mature fault can transmit energy directly to the surface. The discovery may change how scientists evaluate the danger posed by major faults around the ...

Recent shaking feels dramatic but is scientifically routine Over the past few days, residents of Sonoma County have felt a handful of earthquakes — a magnitude 4.0 near Glen Ellen followed by ...