"(caused? Discuss...)" I could go on for an hour about the many concepts/definitions of 'causality', but if you want a general intro., this will do.

Obviously, it is impossible to name just one for an event like an earthquake, since the *remote cause(s)* enter the calculation.

Very few places are totally safe. I live near Washington D.C., and have cracks in my ceiling from a medium sized quake in August, 2011. Very rare around here.

What I worry about are things like La Palma in the Canary Islands.... and yes, Yellowstone and San Andreas and Cascadia, just because I will be affected even if they don't get me, personally. I have all I can do just coping with recent political events that I tried to affect.

TV programs warn me about meteors, comets, asteroids, Kudzu, killer bees, fracking, old nuclear reactors, global warming, drug side effects..... and supernovas in some nearby galaxy. Not much I can do about any of those. The universe doesn't care, and I've made it this far for 77+ years.
I always hope for good luck for everyone ... but... *shrug*