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 disturbance in the Caribbean became Invest 99L on Tuesday and will likely become Tropical Storm Sara. FOX 13 Chief Meteorologist Paul Dellegatto says the tropical wave has a 90 percent chance of developing over the next week.