[Robert A Cook PE]

This are the past very large earthquakes up and down the Cascadia Zone rezion.

https://projects.oregonlive.com/maps/earthquakes/timeline

We are NOT “overdue” for a Mag or Mag 9 earthquake up there. Rather, we are “due, on average, about right now” for a Mag 8 or Mag 9 earthquake.

324 years since the Indian tribes were wiped out in 1700, and an “average interval” of between 300 to 500 years.

[little jeremiah]

I read Indians in the very north (WA state?) weren’t wiped out but had oral history of that EQ and tsunami.

[little jeremiah]

THanks for link.