Scientists investigate the Cascadia Subduction Zone off the Pacific Northwest, and the potential for a catastrophic tsunami.

The tsunami wave from an anticipated earthquake off the West Coast could reach 100 feet and permanently flood parts of the coast.

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

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.

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

A Cascadia Subduction Zone earthquake could cause long-lasting changes to Washington’s landscape, coastline and floodplain, a new study says.

The new bridge will be earthquake-ready, so crews are digging a 10-foot-wide, 125-foot-deep hole to see how concrete supports react during a simulated seismic event.

PORTLAND, Ore. – With a massive Cascadia Subduction Zone earthquake looming in the Pacific Northwest, Oregon lawmakers are considering a bill to help build an earthquake-ready Columbia Boulevard ...

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.

Crews work on digging a 125-foot-deep hole on Tuesday, Feb. 4, 2025, in Tom McCall Waterfront Park that will be used to test the design of the new Burnside Bridge.

New Cascadia Subduction Zone research suggests the tsunami risk for some coastal communities in the Pacific Northwest may not be quite as acute as originally thought. Ian McCluskey / OPB.

A Cascadia Subduction Zone earthquake could cause long-lasting changes to Washington’s landscape, coastline and floodplain, a new study says.