The rupture struck just southwest of the Cascadia subduction zone — the notorious offshore fault that stretches from Cape Mendocino in Northern California to Vancouver, British Columbia ...

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 ...

A 7.0 earthquake off the coast of Northern California in early December triggered a tsunami warning for parts of the ...

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.