Tropical Depression Nineteen has formed in the Caribbean Sea and is forecast to continue strengthening, according to the National Hurricane Center.

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.

Tropical Storm Sara formed in the Caribbean Sea Thursday afternoon, posing a threat to Central America, where forecasters expect the system to unleash heavy rainfall and flash flooding, according to the National Hurricane Center in Miami.