There was a short story in one of my dad's books about a seismologist living in California who was predicting 'the big one' on the San Andreas fault, but kept arguing with the computer about the math. I can't remember the author, title or any other identifier, but the last line was something like:
"Well, I'll be. The computer was right!"
There may have been mild profanity.
Everyone else leaves California, but instead of California falling into the Pacific, the rest of the country falls into the Atlantic. He is the sole survivor.