Gordon formed into a tropical storm near the Florida Keys early Monday as it moved west-northwest at 17 miles per hour (28 kph).
The heaviest rain, between two and four inches, is expected to fall along the coast from just south of Miami to just south of West Palm Beach, as the storm system moves through the Gulf of Mexico, according to the National Weather Service.
The storm will gather strength as it heads through the Gulf of Mexico and be at our near hurricane force as it makes landfall Tuesday night along the MS or Alabama coast, the hurricane center said. Conditions look favorable for tropical storm development as the system moves towards the north central Gulf coast.
An Air Force Reserve reconnaissance aircraft will be deployed Monday evening to investigate how the system is developing and whether it does indeed evolve into a tropical storm.
The area from Navarre to the Alabama-Mississippi border should experience tides of 2-4 feet above normal.
The National Weather Service said conditions were "possible" for tornadoes in the affected parts of South Florida on Monday night.More news: Trump renews attack against social media companies
Mid-September is considered the peak of the hurricane season, AccuWeather said.
Showers and thunderstorms are already ongoing in Louisiana, Texas, and MS with flash flood watches in place. There are NO watches or warnings for Northwest Florida.
The peak wind forecast on the Mississippi Coast on Monday is 15 to 25 miles per hour with wind gusts of 35 miles per hour.
The storm, which is now near the Bahamas, is moving north west towards the Gulf of Mexico.
Sea-surface temperatures in the Gulf of Mexico are warm enough to support a tropical cyclone but may not be high enough for a storm to quickly strengthen.
A slow-moving storm system continues to produce heavy rain and flooding from Kansas to Illinois Monday morning and into the afternoon.
While the chance for formation remains low Monday morning, it could increase in the coming days (as we saw with what is now Tropical Storm Florence).