Well if he knows that, he should help them!!
Doesn't he have a picture of a tsunami he can point to (from his monitor or the studio) and show them?? They'll get it.
The mayor is playing politics.
If the hurricane passes over, he'll get blamed for everyone leaving and the loss of money.
He's thinking about his career.
That sports arena will be the "shelter of last resort" for those who "rely upon public transportation." (The mayor said that on the weather channel.)
Looks like more vandalism.