The last big, “megathrust” earthquake in the region, along the 600-mile-long Cascadia Subduction Zone, was in 1700. Experts say the likelihood in the next 50 years of a “megathrust” on the ...

The Pacific Northwest is at risk for a mega-earthquake because of the Cascadia Subduction Zone. The region is primed for powerful quakes, with a particularly strong one called the Big One ...

So just how big was last Friday’s earthquake? Depending on what source you read — and when you read it — the magnitude of the Sunshine Coast earthquake that rattled southwest B.C. shortly ...

The research, recently published in the prestigious journal Science Advances, produced the most detailed picture researchers have yet of the Cascadia Subduction Zone, an area spanning more than ...

The good news for Eastern Canada is these kinds of earthquakes are unable to register on a large-scale magnitude such as an 8 or 9, which happen in the Cascadia subduction zone, Hobbs noted.

By applying this knowledge to urban planning, Sepulveda says we can better prepare for the realities of seismic risk. ”Here in San Diego, we need to understand that the last big earthquake that ...

For U.S. seismologists, Japan’s “megaquake” warning last week renewed discussion about when and how to warn people on the West Coast if they find elevated risk of a major earthquake.

The last big, “megathrust” earthquake in the region, along the 600-mile-long Cascadia Subduction Zone, was in 1700. Experts say the likelihood in the next 50 years of a “megathrust” on the ...