Add Yahoo as a preferred source to see more of our stories on Google. Construction workers and vehicles move around the Capitol. Gov. Kotek’s order to earthquake-proof state buildings comes as the ...

Add Yahoo as a preferred source to see more of our stories on Google. Map showing the Cascadia subduction zone and the San Andreas Fault. (USGS/Illustration by SFGATE) Two of the West Coast's most ...

Picture a fault line lurking just offshore, stretching the length of entire states and quietly storing energy. Scientists say the Cascadia Subduction Zone has been still for centuries, which makes the ...

A "Big One" on the Cascadia subduction zone in the Pacific Northwest might trigger a similarly serious earthquake on California's San Andreas Fault, new research suggests. The findings are based on ...

The Cascadia Subduction Zone is unusually quiet for a megathrust fault. Spanning more than 600 miles from Canada to ...

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 ...

When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground shaking from a magnitude 9+ earthquake incredibly destructive, the event ...

The so-called “Big One” or Cascadia Subduction Zone earthquake expected to trigger disruptive quakes throughout the West Coast could cause more damage than previously estimated if it sets off quakes ...

Geological records hint that earthquakes at the Cascadia subduction zone might trigger the San Andreas Fault. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...