The potential storm follows swiftly on from Hurricane Rafael, which hit Cuba last week. Making landfall as a Category 2 hurricane with prior wind speeds peaking at 115 miles per hour, it knocked out the country's entire power grid. It was the strongest November tropical cyclone in the Gulf of Mexico on record, matched only by 1985's Hurricane Kate.

A somewhat rare November storm system is gathering steam in the Caribbean Sea. Tropical Storm Sara will eventually make a turn to the east and Florida.

A change in the storm's path significantly changes Hurricane Sara’s timeline, placing doubts on whether it will survive early landfall.

Tropical Depression Nineteen formed Thursday morning and is expected to become tropical Storm Sara later today, the NHC said.