It is forecast to reach the central Gulf Coast by Tuesday night or Wednesday morning.
Forecasters have also issued a storm surge watch from west of Shell Beach, LA, to the mouth of the Mississippi River, and from east of the Mississippi-Alabama border to Navarre, FL.
The system is expected to become a tropical storm by Monday evening, at which point it will be named Gordon.
Activity in the Atlantic Ocean and Carribean is becoming very active as the peak of hurricane season is upon us.
The National Hurricane Center has issued a tropical storm watch for the central U.S. Gulf Coast.
"The deepest water will occur along the immediate coast near and to the east of the landfall location, where the surge will be accompanied by large waves", the centre said. "All preparations to protect life and property should be rushed to completion, as tropical storm conditions are expected to arrive in the warning areas Tuesday afternoon".
Gordon formed into a tropical storm early Monday near the Florida Keys.
The storm, which was lashing South Florida with heavy rain and strong winds, was located 60 miles west-northwest of Key Largo; or 50 miles south-southeast of Marco Island.
Pressure was 1007 mb, down two millibars from the previous measurement. Its projected path moved further east on Monday, putting MS and Alabama under a hurricane warning.
"Gordon will bring heavy rainfall and tropical storm conditions to portions of South Florida and the Florida Keys today and a tropical storm warning is in effect for these areas", the hurricane center said Monday. A storm surge watch spreads west to the mouth of the Mississippi River and east to Navarre, FL. Cruise Hive will monitor the growing Tropical Storm and will post updates which impact the cruise industry including ship itineraries and ports. According to an NHC chart, the Emerald Coast should be feeling the effects from Gordon starting Tuesday morning.
It added, "Tides above normal can be expected Monday through midweek". It is possible these totals need to be increased further north into parts of Alabama, Mississippi, and Arkansas-this is heavily dependent upon the track of Gordon. Florence's sustained winds have reached almost 65 miles per hour and the storm is expected to grow stronger later today, according to the National Hurricane Center.