Some initial disclosure: My hobbies are hunting and mountaineering. Both of my parents are also retired Army.
I have a pretty well prepared plan actually.
We have two weeks of food and water which I check regularly, and being a hunter I have about 500 rounds of dry sealed hunting grade ammunition stored (locked) in the survival bag. I've also had several forms of bush survival classes and I'm extremely familiar with what is safe to eat and natural remedies for various issues. I also have several forms of long lasting antibiotics in the kit. Since I mountaineer you can bet your ass I have foul weather survival gear, also stored and ready to go.
We have three kinds of plans which is something I recommend everyone have:
1) Natural disaster which does not require evacuation. This is the hurricane avoidance type of thing (I live in the Northeast. IF a hurricane reaches us, its probably a A Big Deal). Hunker down, away from the windows, food, candles, extremely reduced dependence on social services such as running water and electricity.
The last two both involve the following: Gear off rack, duffles loaded, ready to move within 5 minutes of the decision to evacuate. Once this decision is made, there is NO argument. My wife is very aware that I switch gears into a mode which I learned from two very serious parents.
2) Natural disaster which forces an evacuation. The biggest question here is knowing when to get the hell out of dodge immediately, versus knowing when to wait for the unwashed mashes to run in panic because they're retarded. Gear is loaded and routes contrary to those being used by mass evacuees are chosen. In cases where this isn't possible, Every police and military station in the area is marked in a map. Short wave radio is already pre-tuned and tested for known open frequencies.
3) Man made disaster which forces an evacuation. Welp. This is it. If this plan is going into effect, there are a lot of variables. Is the air safe? Are the roads safe? Is fallout a concern? The answers here determine whether or not I'm just saying a quick prayer, covering my skin and praying to god, or I'm running. If I can run, my concern and courtesy for others is very limited. I'm the very serious guy loaded to bear and not taking shit from people around me. If I need to survive, my wife and I -will- survive. I am a firm believer in Darwin's theory of evolution and my genes are the alpha ones bud :P