Check out the observer’s comments from the latest West Palm Beach weather observation:
METAR KPBI 031753Z 03018G27KT 10SM SCT030 BKN200 32/22 A2981 RMK AO2 PK WND 03028/1741 SLP094 MGR TRIED TO STAY/WAS ASKED TO EVAC.WILL RTRN ASAP WILL NTFY NWS-TWR-MIAFSS UPON LEAVING-RTRNG TO BLDG 60005 T031702
So, it looks like the last plane has already left PBI.