The biggest danger zones of the seismic variety are the Cascadia Subduction Zone in the Pacific Northwest, the San Andreas Fault in California, and the New Madrid Seismic Zone in Missouri.

An earthquake struck off the northern California coast on Tuesday ... as a reminder of the long-term seismic risks posed by the Cascadia Subduction Zone, a less-publicized but potentially ...

She first suggested California join Canada, before mentioning Cascadia. “You think we want to be the 51st state? Nah. Maybe California would like to be the 11th province. How about it?

The Cascadia subduction zone, where the oceanic Juan de Fuca plate descends beneath the overlying North American plate, extends 1100 km from northern California to northern Vancouver Island.

January 26 marked the 325th anniversary since the last earthquake struck the Cascadia subduction zone. Centuries later, the ...