A tropical storm watch stretches along the coast from Edisto Beach, S.C., to the South Santee River. The hurricane center said those elsewhere along the southeast coast of the United States should also keep an eye on Chantal. Chantal is expected to track slowly to the north and then northwest and move onshore in South Carolina by Sunday morning.

Hurricane forecasters have their eyes on a tropical disturbance brewing off the coast of the Southeast United States that has a moderate chance of formation into a cyclone − but could become a tropical or subtropical depression as early as the Fourth of July holiday weekend.

As of 8 p.m. Friday, July 4, the National Hurricane Center has classified a low pressure off the Southeast United coast as Tropical Depression Three. The system, which had sustained winds of 35 mph and was moving at north at 2 mph,