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

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

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

Is your coastal zip code ready for a sudden six-foot drop? No joke it’s the bracing new reality for towns from Northern Cal to Washington, thanks to the powerful Cascadia subduction zone. According to ...

The tsunami wave from an anticipated earthquake off the West Coast could reach 100 feet and permanently flood parts of the coast. Camp Mystic girls had a safe haven by the river for 100 years ...

The Cascadia fault system, which sits about 100 miles off shore, runs from California to Vancouver. The subduction zone is believed to have caused a 9.0 earthquake in 1700, the largest known quake ...

The Cascadia subduction zone could deliver the worst earthquake in North America. It runs 700 miles underwater along Pacific Northwest, from Canada to California.

Japan’s new earthquake-detection network lengthens warning times, and researchers in Wales have harnessed nuclear blast ...

Cascadia megathrust earthquakes are caused by the Cascadia Subduction Zone that sits about 40 miles off the coast of the Pacific Northwest, where the edge of one tectonic plate is being slowly ...

Initial results from a four-year seafloor monitoring project of the Cascadia Subduction Zone show the 700-mile-long fault off the Northwest coast isn’t as seismically quiet as it long seemed.

For U.S. seismologists, Japan’s “megaquake” warning last week renewed discussion about when and how to warn people on the West Coast if they find elevated risk of a major earthquake.

When the Cascadia subduction zone earthquake hits, the Oregon coast will literally sink, heightening the effects of tsunamis and permanently altering the coastline. Now scientists are trying to ...