Burnside Bridge getting seismic test in case of Cascadia Subduction Zone earthquake. The new bridge will be earthquake-ready, so crews are digging a 10-foot-wide, ...

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

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

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.

An earthquake in the Cascadia Subduction Zone with a magnitude greater than 8.0 could cause a sudden subsidence — the sinking of land — that, paired with rising sea levels, would enlarge ...

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

The big one about “The Big One” hit 10 years ago. On July 13, 2015, The New Yorker shook us up with “The Really Big One,” ...

The Cascadia Subduction Zone, capable of producing a 9.0 magnitude earthquake, last produced a major quake in 1700. The fault goes an average of 535 years between major quakes, ...

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

Imagine a massive wall of water slamming into the West Coast, giving residents just minutes to escape. This nightmare ...

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