Where are you imagining that all the people in the cities would go, and how would they get there? You should look at what the partial evacuation of Houston from

Where are you imagining that all the people in the cities would go, and how would they get there? You should look at what the partial evacuation of Houston from Hurricane Rita was like [0]. It took people over a day to get to Dallas. And that was just one city partially emptying, mostly going to other cities. [0]: https://en.wikipedia.org/wiki/Hurricane_Rita#Mass_evacuation https://en.wikipedia.org/wiki/Hurricane_Rita#Mass_evacuation