As Hurricane Dorian slammed the Bahamas Sunday, several Florida ports closed in preparation.

Port Miami, Port Canaveral, Port Everglades in Fort Lauderdale and Jacksonville's JAXPORT all closed to incoming and outgoing vessel traffic over the US Labor Day long weekend, along with other, smaller facilities on the state's Atlantic coast.

The closures, put in place by the US Coast Guard, have forced several Carnival Corp and Royal Caribbean ships to return Wednesday or Thursday, according to the Miami Herald.