Tropical Storm Fay, which moved off Florida's east coast Wednesday morning, could strengthen slightly before boomeranging back into northeastern Florida by Thursday, according to the National Hurricane Center.
A tropical storm watch remains in effect for Florida's east coast north to the Georgia border.
Meanwhile, Fay drenched Florida on Tuesday, spawned at least seven tornadoes across the state, caused one death and left thousands without power.
The Kennedy Space Center remains closed for a second day.
The death toll in the Caribbean from Fay now stands at 17 in Haiti, four in the Dominican Republic and two in Jamaica, all a result of floodwaters and drownings.
Hurricane policies in the Caribbean
In the wake of Fay, more operators have issued hurricane protection policies.
The Westin and Sheraton Our Lucaya Resorts on Grand Bahama Island offer guests with confirmed and fully-deposited reservations the option of a full refund or a one-room category upgrade on the next visit if their trip is cancelled or shortened due to a hurricane warning or watch.
Also, FunJet Vacations' Hurricane Benefits Plan, valid on charter and scheduled air and land packages through October, includes refunds for interrupted and unused nights plus cash certificates towards future trips.