"A catastrophic and deadly storm surge is likely along portions of the Florida Big Bend coast, where inundation could reach as high as 20 feet above ground level, along with the destructive waves," the National Hurricane Center said Thursday morning.

Unlike Royal Caribbean, which recently added extra plugs to the prohibited items list, Carnival Cruise Line has no plans to ban extra plugs.

A number of ships including Utopia of the Seas, Carnival Glory, MSC Seashore, Adventure of the Seas, and Disney Wish appear to be impacted.

Tropical Storm Helene has formed in the Caribbean Sea, and forecasters say it will strengthen into a major hurricane.

Helene became a hurricane Wednesday after rapidly strengthening in the Caribbean Sea and moved north along Mexico’s coast on a path toward the U.S., leading residents to evacuate, schools to close, and officials to declare emergencies in Florida and Georgia.