A new scientific warning has put California’s earthquake risk in sharp focus: supershear earthquakes—rare, high-speed ruptures that outpace traditional seismic waves—pose a growing threat to the state ...

A California Geological Survey map released earlier this year depicts just how intense and damaging the shaking from future earthquakes will be across the state, revealing where the threat is most ...

Julia Shumway / Oregon Capital Chronicle The so-called “Big One” or Cascadia Subduction Zone earthquake expected to trigger disruptive quakes throughout the West Coast could cause more damage than ...

In earthquake country, the meandering paths of quake faults easily get seared into memory in the same way as a California freeway map. An earthquake fault is a fracture in the ground between two ...

A magnitude-5.2 earthquake occurred about 2.5 miles south Julian, California, at 10:08 a.m. April 14, according to the U.S. Geological Survey. Noticeable shaking could be felt across the Southern ...

SAN FRANCISCO -- Scientists say there's new evidence that two of the best-known earthquake fault lines on the West Coast are in sync and that has the potential for a major disaster. A new study by ...

New research offers the theory that the San Andreas fault and the Cascadia subduction zone could produce devastating back-to-back earthquake disasters.