Tropical Storm Chantal formed on Saturday as it slowly moved in the Atlantic toward the Carolinas, according to the National Weather Service.

Tropical Storm Chantal has gathered a little more strength as it drifts toward the South Carolina coast Saturday, promising a stormy end to the holiday weekend.

Located about 150 miles south-southeast of the Charleston, South Carolina, Chantal was producing sustained winds of 40 mph and moving north toward the coast leading to a Tropical Storm warning as of 8 a.m., according to the National Hurricane Center.