A 9.2 megathrust earthquake on the Cascadia Subduction Zone would not just rattle the Pacific Northwest, it would redraw the ...

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating ...

A megaquake in the Pacific Northwest could trigger a large earthquake along California's San Andreas Fault, creating an unprecedented catastrophe up and down the Pacific Coast, a new study has found.

PORTLAND, Ore. (KOIN) – A major earthquake waiting to strike the Cascadia Subduction Zone isn’t the only natural disaster looming in the Pacific Northwest, new research shows. A powerful quake, ...

It’s like a plot from a Hollywood movie. A massive earthquake on one West Coast fault triggers other earthquakes far away, causing vast destruction over hundreds of miles. A new study out Tuesday ...

In 1954, a powerful earthquake shook Northern California near Humboldt Bay, baffling scientists for decades. Most quakes in the region come from the Gorda Plate, but this one didn’t fit the pattern.

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 ...

A Cascadia subduction zone earthquake is coming for the Pacific Northwest, and when it hits, scientists now believe, it could cause the San Andreas fault in California to go off. “It would be a very ...

CORVALLIS, Ore. – Two fault systems on North America’s West Coast – the Cascadia subduction zone and the San Andreas fault – may be synchronized, with earthquakes on one fault potentially triggering ...