The National Hurricane Center in Miami issued a tropical storm advisory for the Savannah River through to the Santee River in South Carolina following the development of tropical storm Alberto on Saturday.
With sustained winds at 85 km/h, the storm comes about two weeks ahead of the official start to hurricane season in the Atlantic basin, which runs from the beginning of June to the end of November.
Storms outside of the season aren't uncommon for this region.
"There may be showers on the coast, but Alberto is slowly moving north," says Gina Ressler, a meteorologist at The Weather Network.
On Sunday, the National Hurricane Center dropped all watches and warnings for the South Carolina coast.
Rob Davis, another meteorologist at The Weather Network says the hurricane is expected to stay off shore and the strongest winds will remain off land.
On May 14, tropical storm Aletta formed in the eastern pacific four hours ahead of its hurricane season kick-off. It weakened into a tropical depression about four days later.