Off The Richter Scale - Last one was 9:00 PM Jan. 26, 1700

Off the Richter Scale
https://www.city-journal.org/html/richter-scale-16405.html

This Earthquake Drowned the Pacific Northwest
https://youtu.be/K_sJ0QJ31fc

Seismological Society Of America
https://www.seismosoc.org/news/how-often-do-cascadias-megaquakes-occur/#:~:text=16%20May%202018%E2%80%93Devastating%20magnitude,every%20500%20years%20on%20average.

Live Science
https://www.livescience.com/62608-cascadia-megaquakes-more-frequent.html

Hyndman And Rogers
http://web.uvic.ca/~rhyndman/PublicationPDFs/Hyndman&RogersGreatEarthquakeCJES2010.pdf
Why the risk of the 'Big One' in B.C. is heightened every 14 months
https://www.cbc.ca/news/canada/british-columbia/earthquakes-bc-slow-slip-1.3794192

Large M7.1 Earthquake strikes near ANTARCTICA -- Second Large M7+ quake = Major unrest
https://youtu.be/pC9G0pZiPwE

The Big Quake – TechKnow
https://youtu.be/TuOfZWkeRi8