Washington state has seen several recent earthquakes ranging from small tremors near Tacoma and Vashon Island to larger ...

A new study warns that a megathrust earthquake along the Cascadia Subduction Zone could cause coastal land to sink ...

This list of stories illustrates the region's seismic activity, including the possibility of a much larger Cascadia subduction ... past each other in a “megathrust” earthquake.

The Cascadia subduction zone could pose a major threat to the West Coast if a high magnitude earthquake were to occur, ...

A major earthquake waiting to strike the Cascadia Subduction Zone isn’t the only natural disaster looming in the Pacific ...

When an earthquake rips along the Cascadia Subduction Zone fault, much of the U.S. West Coast could shake violently for five ...

A major earthquake along a West Coast fault could have catastrophic consequences across coastal Washington, Oregon and northern California. Running offshore from northern California to British ...

RELATED: Multnomah County mulls 'risk bonding' for seismically vulnerable Portland fuel tank hub Cascadia megathrust earthquakes are caused by the Cascadia Subduction Zone that sits about 40 miles ...