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Not really. The San Andreas fault is a strikeslip fault, if anything parts of Southern California near the coast will eventually (in millions of years) be near San Francisco.
In other words, it moves horizontally, so it won't simply drop into the ocean.
Just that the mountain area will now have ocean front property in California. And the rest will just float into the pacific making it's own island.
I don't think tsunamis are a problem in Southern CA because the major faults are on shore. The problem is in the Pacific NW where the Cascadia fault lies 50-100 mi offshore. The fault structure off the Pacific NW is almost identical to that off the coast of Sumatra (Sunda Fault) which had a 9.2 scale quake in 2004. An earthquake of this magnitude happened in the Pacific NW in the year 1701. We know this from geological evidence includind drowned trees and the tsunami was sufficiently large to have been recorded in records from Japan. The geological evidence suggests that large earthquakes occur on the Cascadia fault every 300-500 years, so we might primed and loaded for one anytime now. If you travel to the Oregon, Northern CA or Washington coast those white and blue tsunami warning zone signs and sirens are there for a reason.
A quake has to be the worst type of disaster out there. No warning at all, even the "warnings" tend to be the total event, so lend the population toward complacency.
I'm in Hurricane country, but at least we see them coming thousands of miles away......
I lived in san diego for 12 years and never felt an earthquake..........
I lived in Biloxi, MS for 5 years and I sure felt a hurricane(KATRINA).
My best friend moved to New Jersey from California several years ago. And was originally from Texas. We mock all 3 states equally..Oh, the fun we have
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