Thanks. I didn't know the population density. The really severe wind swath along and just to the right of the eyewall may go through the dense population or may not. Too soon to tell. People who are there should be looking around for sturdy shelter locally to ride it out. Also the cat 4 prediction is currently the high end prediction. The NHC has added caveats that it could be less (in their discussion)
If Irma’s eyes goes directly thru center of the peninsula north then the worst winds will be in mostly unpopulated Everglades. Also as it moves North, the eye should weaken.