Regardless of whether this becomes a tropical depression or storm, it will provide copious amounts of rain to Florida and parts of the Gulf coast.
Forecasters said the system continued to become better defined early Friday and will likely form in the northwestern Caribbean sea or southeastern Gulf.
Torrential rain, flooding and thunderstorms are likely across the Caribbean, the Gulf states and southern U.S. states even if a tropical storm does not materialise.
Storms Friday morning should not be severe, but some heavy rainfall and wind gusts up to 45 miles per hour can be expected. And on the coast, Saturday and Sunday will be dry and cloudy, say forecasters.
Heavy rainfall is expected to affect the Yucatan Peninsula, as well as western Cuba, Florida and the northeastern Gulf Coast over the weekend. When it arrives, forecast models suggest it will spin up into at least a tropical depression and maybe even the hurricane season's first named tropical storm.
The hurricane center confirmed Friday morning the storm met the classification criteria, becoming the first tropical system of the 2018 Atlantic Hurricane Season.
An Air Force Reserve aircraft was expected to further investigate the weather pattern Friday, according to the South Florida Sun Sentinel.
Because of this, the South Shore, Coastal Mississippi, St. Tammany Parish and Southern Tangipahoa Parish are under a flash flood watch. The government of Cuba has issued a tropical storm watch for the western Cuban province of Pinar del Rio. Walton County is not now under a flood watch, according to the National Weather Service in Tallahassee, but that could change.
Meteorologists keeping track of a Caribbean disturbance forecast a 100-percent chance of soggy buns if your holiday weekend involves any sort of outdoor grilling.
Florida Gov. Rick Scott said the state is preparing.
Tropical Storm Alberto will bring rain to North Carolina over the Memorial Day weekend, but it appears the worst of it will hold off until Sunday night through Monday.
Due to wind shear and marginal water temperatures, only gradual intensification is expected.