Good Luck everybody in So. Cal!!!
Like Susan and Nicodemus say, it's time to set ThreatCon Echo, to be prepared for aftershocks, or like Susan mentioned, perhaps this was just the "Fore Shocks" of the BIG ONE.
Get all preps up-to-date, like:
water, food, portable/temporary shelter (tents, camper, etc), means to cook, bathroom requirements, contingency plans & escape route(s) reviewed & updated, prepare/replenish your boat/camper for getting underway (if you have 1), stock up on paper products, get prescriptions refilled, etc.
_________________________
QMC, USCG (Ret)
The best luck is what you make yourself!