Around 50 people have died in Haiti after a bus tried to cross a river swollen by rain from Tropical Storm Fay.
A dozen survivors were plucked from the raging water of the Riviere Glace in the southwestern province of Grand-Anse.
The US National Hurricane Centre in Miami says Fay, the sixth storm of the Atlantic cyclone season, is expected to move over the Caribbean Sea picking up speed on the way, and hit the Florida Keys as a hurricane sometime Monday evening.
Fay already claimed the lives of five people in Haiti and the Dominican Republic on Saturday.
Florida has deployed some 500 National Guard troops as residents in Key West prepare for a battering.
“ I’m getting a little worried, this is my first storm, we’ve been down here about a year and we are getting a little apprehensive. We were out on the water looking at the clouds a little earlier. Boy we came back in fast though,” said one woman.
Meanwhile, authorities have called on all visitors to leave the area and head north.