A 4.2 magnitude earthquake struck about 143 miles southwest of Tofino, B.C., at around 5:53 a.m. A second 3.0 magnitude ...

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.

and despite the volcano’s location on the Juan de Fuca Ridge, it poses no danger of triggering the “Big One” in the Cascadia Subduction Zone. “If you were out there on a ship right over ...