Ah, yes...you refer to my favorite disaster-that-aint-happened-yet-but-may-very-well-could, the Cascadia Subduction Zone.
Think the Great Tohoku Quake writ large.
And the Cascadia area is the ONLY place along the Ring that hs NOT had any major temblors in the recent past.
Yep, it's a loaded gun. I went through the Northridge quake here in CA -- the most costly quake in American history due to all the development. It was a very memorable experience I don't want to repeat. And the San Andreas has been quiet -- too quiet.
We have to face facts: Earth is a dynamic planet and human lives mean nothing to plate tectonics. No place in the world is really safe though the Ring of Fire is probably the most dangerous. I'm going to buy quake insurance ASAP. Been putting it off too long.