That's a tough one.
People like to pick on us here in FL but the fact is we stick together pretty well when Hurricanes come rolling through (that is to say, real Floridians and not gangbangers from up north who were thrown here by judges as a last resort/get out of our state measure who wind up stealing everything not bolted down...but I digress). I guess I'd have to see my friends and neighbors either all gone or preparing to move, and hear news that a large portion of my state had been written off until xyz, or that the gov't was suspending Posse Comitus in my area "for the duration of the emergency".
I guess that would drive me to put the wife, kids, jewelry, photo albums, dog, guns, water and flats of MREs into the car(s) and head for Georgia and Points North.
Now assuming an XK class extinction event? A sort of "Hey the EBS came on for a few seconds, I heard a deep rumble and saw a far-off distant flash but nothing here" kind of event? God, I don't even know.
EDIT: stupid counterquestion. Anyone here have a maintained fallout shelter in/around their house? I guess if you've got a basement you've essentially got one, but, again, this is FL; there's not much in the way of basements here (they're not completely unknown just a little rare - C/R if you will
). The best you can do here without Supermoney amounts of $ is go half-and-half, like take a 6' diameter culvert pipe, cap the ends, bury it 3' down and use the backfill to cover it the rest of the way. Trying to dig one all the way underground, by yourself, means in a couple of weeks you're going to have a water-filled trench in your backyard. It
can be done, it just takes a feat of engineering, money, and time that most of us (probably) don't have and certainly wouldn't have during a run-up to an actual Event.