I actually doubt that. Many SoCal residents aren't ready at all, but they should be. Many SoCal residents are just as idiotic about earthquakes as many Floridians who act surprised when a hurricane threatens their state annually from August thru October.
When the 7.2 rumbled through my house on July 5th, a day after the 6.8 (both earthquakes closed all Disneyland rides for hours), I just enjoyed the ride because I knew I was ready. See my posts on the Disneyland forum from the evening of July 5th for more info there.
Gasoline in the car is the most understandable. But the Floridian who enters the annual hurricane season and lacks the tools required to get through at least 72 hours without police or government assistance; plywood and tools, canned food, camping stove and propane, gallons of bottled water, home defense and ammo, first aid, etc., is just not ready for life in general.
I'm not sure how anyone, or any government, is supposed to nurture those types of low intelligence people through an annual natural occurrence like hurricane season in Florida. Annual hurricanes in Florida have been happening for tens of thousands of years, and will continue for tens of thousands of years into the future.
How do people live there and not know that? It's literally every year from August thru October.