Some years ago I did a lot of digging into the Juan de Fuca earthquake situation, the one from 300 years ago dropped the coastline a bit, and since there were no “civilization” here, it didn’t have destruction that would happen now. Which, as you say, would be unimaginable. We’re on the east side of the Coast range, so no tsunami here. I figure we’d be totally on our own for a long, long time. Wood heat, well with large storage tank, generators, etc. I am not fond of earthquakes and if it holds off until I leave the planet I won’t mind. :😎
I need to say that myself being a engineer and that many of my friends are retired geologists.
But, all of them are in paleogeology. Meaning they are in the study of ancient geological investigations. Thats where i get my information from since we keep in contact.
The one focus of these guys is historical volcanism.
We have discussed the Cascadian zone often and what it would mean concerning the string of active volcanos along the line there. That is where those volcanos get their material from they erupt.
You should have seen my email when the Tonga volcano went. They really got excited.
Did you know that the tsunami created by that blast was WAY higher than the one the 2011 japan earthquake created. Many Meters higher.
Keep yourself prepared. It may come to the point that the only one you can rely on is yourself and those immediately close to you.
Volcanos can be predicted to a point. Earthquakes can not.