"Heavy rain is already moving through Louisiana and will continue over the next few days," AccuWeather's Alex DaSilva said.

The Florida Panhandle will see heavy rainfall from Invest 93L after it reaches the Gulf on Wednesday. The greatest threat to the area at the moment is flash flooding in low-lying, poor-drainage areas and urban locations. Invest 93L is currently expected to make landfall near Louisiana's southeastern coast Thursday morning.

A wet and rainy Florida could soon see even more precipitation in the coming days, according to the National Weather Service, which has warned the Gulf Coast will face a flood-generating system that could form into Tropical Storm Dexter.