What kills me is the often repeated claim that some massive tsunami is going to wipe out everything up to I-5 (about 60-80 miles inland in Oregon).
Most of the analysis I've seen seems to completely ignore the existence of the Oregon coastal mountain range, a 4000 ft high mountain range a few miles inland along the entire Oregon coast (basically Astoria to Florence).
Even in the worst case scenario, maybe some coastal towns are going to have a bad day, though they are all very well outfitted with tsunami alarms and maps that basically say to go a mile or so inland, so I doubt there would even be any significant loss of life.
A large enough tsunami could travel up the Columbia a significant distance. Even a town like Rainier could be at risk though Portland should be fine.
I think the "everything west of I-5 will be toast" refers more to Seattle, where all of downtown is built on fill pulled from the Sound 100+ years ago. For everyone else, the biggest risk is being completely cut off when all of the bridges fail.
Most of the analysis I've seen seems to completely ignore the existence of the Oregon coastal mountain range, a 4000 ft high mountain range a few miles inland along the entire Oregon coast (basically Astoria to Florence).
Even in the worst case scenario, maybe some coastal towns are going to have a bad day, though they are all very well outfitted with tsunami alarms and maps that basically say to go a mile or so inland, so I doubt there would even be any significant loss of life.