No, you see, that would be wrong. Government shouldn't be in the business of telling people to leave or (god forbid) helping them to leave- government is the PROBLEM, not the solution.
As Bar Bush pointed out, Hurricane Katrina worked out quite well for the people of New Orleans.
I did NOT start this thread with any political intention in mind whatsoever. It was just a call to everyone to get the hell out of a danger zone if you can. Don't be stupid an stay and get stranded. That's it.