Forecasters expect Tropical Storm Sara to form in the western Caribbean Sea in the next 24 hours, but there is a great deal of uncertainty about what, if any, impacts it will have in Florida or other parts of the U.

Tropical Depression Nineteen formed in the Caribbean early Thursday with the National Hurricane Center forecasting it to grow into Tropical Storm Sara. Long-term forecast models show it could enter the Gulf of Mexico and then turn toward Florida’s Gulf Coast.