“Aw, nuts. So tsunamis are out. How about earthquakes?”
I know...
FWIW:
My folks bought their first bach property in ‘65. There was a BIG quake in Alaska in ‘64 that killed several folks in Cannon Beach (Northern Oregon) but did not harm Portland...
https://en.wikipedia.org/wiki/1964_Alaska_earthquake
Your best bet is an eruption of Mt. Hood or recession from the state/union and having Antifia set-up ‘government’.
P.S. FYI, Eleutheria5, my wife and I are big fans of Briland.
Have a pleasant day!
I took my then 7 year old son clamming at Clam Beach in Humboldt county Ca the morning after that earthquake. The good clamming was on a “island” and we waded out and started digging with another 20 or so folks but soon the “tide” started rising and everyone headed to high ground and by the time I picked up my son and crossed the inlet the water was up to my shoulders. I got the cold shakes and sat in the old Jeep pickup with the heater on full blast for 30 or 40 minutes before I could drive the 20 miles to Eureka and home