Had to take a few ‘hard sciences’ classes in college. One I chose was geology. I did a paper on the San Andreas fault. It seemed that the fault (which is many 100s of miles long) has a severe break about once every 75 years... but that after 3 intervals of 75 years it would be relatively calm for about 150 years. Noticed this pattern over several cycles but it’s just an observation. No known reason for it. By the math, it’s overdue.
“Remember the fault line runs right through here...”
Had a friend in Bolinas that lived right on it. I lived in an apartment in SF that shook like crazy during one quake. Elevators out of order, I ran up eight flights. Plaster all over the stairs and in the hall. Woman who had the identical apartment next to mine was screaming she couldn’t get out. I put my back to the door and pushed. Her apartment was a wreck, plaster on the ceiling down, china cabinets...then we went to my door. Opened and gasped. NOTHING. One vase had fallen off the coffee table but didn’t break. I guess my hero cat held the place together.
In SF,, there were so many quakes we could tell whether they were 3.5 or 4.2...I guess we’re overdue for a big one. What do you think? 7.5?
What worries me, seriously, is The Yellowstone Caldera.
That thing is over due to blow and when it does it’s going to be a massive ecological and humanitarian disaster.