Authorities urged residents to leave low-lying neighborhoods in Franklin, Taylor and Wakulla counties because of flooding. Shelters were open in the area.
Wind tore the roof off a marina in St. Pete Beach, and a pier was heavily damaged, said Tom Iovino, a Pinellas County government spokesman. He said no injuries were reported.
In Orange Beach, Ala., a 32-year-old man disappeared Sunday in rough surf kicked up by the storm, said Coast Guard Lt. j.g. Torry James. Further information wasn't immediately available.
As of Sunday, 23 percent of oil and gas production in the region had been suspended, according to a government hurricane response team. Employees have been evacuated from 13 drilling rigs and 61 production platforms in the Gulf of Mexico.
The storm was not expected to result in higher oil and gas prices.
"It's largely a non-event for oil," said Tom Kloza, chief oil analyst at the Oil Price Information Service.