New evidence suggests current estimates about tsunami size and how quickly waves make it to shore may be too high and too ...

A 700-mile fault could snap by 2075, sinking parts of Portland, Seattle & SF. The Cascadia megaquake may trigger a 100-ft ...

There are places where splay faults are present along the Cascadia Subduction Zone, and for those spots, ... a splay fault could send a tsunami hurtling toward the coast within 10 or so minutes.

A so-called "doomsday tsunami" is likely to hit the United States in the near future, but scientists now say there is a ...

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. west coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward shore.

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. West Coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward ...

Scientists are warning that a 100-foot, Doomsday-style tsunami is primed to hit the US West Coast at any moment. Yet ...

January 26 marked the 325th anniversary since the last earthquake struck the Cascadia subduction zone. Centuries later, the ancient quake has left clues for scientists to prepare for the next one.

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. West Coast could shake violently for five minutes, and tsunami waves as tall as 100 feet could barrel toward shore.

On Jan. 26, 1700, an earthquake on the Cascadia fault caused the forest to lurch downward by more than 3 feet. Soon after, a tsunami perhaps 100 feet high barreled through at 20 or 30 mph.

The Cascadia Subduction Zone fault is 700 miles long, running from northern Vancouver Island, British Columbia, to Cape Mendocino, California.