Note that on that model Irma comes ashore in downtown Miami and then goes off-shore near Melbourne, FL. With that model, Miami gets wiped, then when the storm goes back to sea it can restrengthen and continue a deluge of Florida as it aims for SC. That's a really bad scenario. The NHC model still shows Irma tracking straight up the peninsula which should weaken it.

In either model, Miami gets wiped.