Just off the coast of the Pacific Northwest is the Cascadia Subduction Zone, a complex collection of earthquake faults ...

Science & Environment Cascadia earthquake tsunami threat may not be quite as bad as we thought (but it’s still bad) By Jes Burns (OPB) July 3, 2025 6 a.m.

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

Cascadia’s mega-tsunami risk looms large with a 1,000-foot wave possible. Coastal towns have just 10 minutes to escape as a massive quake could strike within 50 years.

A tsunami that never ends? Study highlights a looming West Coast risk. The tsunami wave from an anticipated earthquake off the West Coast could reach 100 feet and permanently flood parts of the coast.

Understanding the megathrust earthquake and tsunami threat potential of the Cascadia Subduction Zone is “still a work in progress” for the team behind this latest research, but as we learn ...

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

There are places where splay faults are present along the Cascadia Subduction Zone, and for those spots, the tsunami risk may not have changed much.

January 26 marked the 325th anniversary of the last Cascadia subduction zone earthquake -- a magnitude 9 quake that sent a tsunami to Japan in the year 1700.

In California, all tsunami maps and tsunami road signs are based on our worst-case tsunami threat — the Cascadia subduction zone monster. The maps don’t show where the water will be.

But this study suggests that a tsunami could accompany a magnitude 7 or greater earthquake in the more inland Seattle area, leaving residents in some areas under three minutes to find higher ground.