The problems I need to concern myself with are earthquakes which can strike with little to no warning at any time, and wildfires such as the one east of LA right now. Fortunately I get lots of time to prepare for wildfires so bugging out would be very controlled. For earthquakes after the quake there's little point in leaving, the damage has been done. If the home is destroyed I leave for good, controlled -- get reservations at hotels along my route and start driving.

In any wide-scale emergency, bugging out for me entails traveling through even more highly populated areas or going into the desert. A half tank will get me just far enough to be worse off. Even if I leave at the instant of first public notification (zero delay), the traffic will get worse as I drive through more populated areas and 100 miles up the road I'll be sitting in a parking lot if I get even that far. My only shot at bugging out is to allow my paranoid half to take over and anticipate the need to leave; that would make it very difficult to keep a job.

So I anticipate staying. Food, a roof and a bed, water and electricity until they're shut off. At that point we make hard decisions. If I decide to leave for a wildfire I'll go far enough in my truck with my stuff to be out of the way. Then I wait and see what happens, maybe take in a movie. If the home is taken out I keep going to my other home and let the landlord deal with the house; otherwise I return and life goes on.

If a wide scale emergency causes me to leave early and the situation is not the dlilusions of a paranoid mind, I'm probably not returning ever. I go to my other home and pick up a new life.

Summarizing:
Plan A is to stay and bug in.
Plan B is to assess and make deicisions once the situation is clear.
Plan C anticipates the situation being very bad, dictating a move early.

In truth, sometimes I'd like to execute Plan C immediately, but there's no going back.