Tropical Depression Three has strengthened to a tropical storm system.Tropical Storm Chantal is 150 miles south-southeast of Charleston, South Carolina.Sign up for our Newsletters It is slowly moving north at 2 mph,

Tropical Depression Three has strengthened to become Tropical Storm Chantal. Chantal is centered about 150 miles south southeast of Charleston.

CHARLESTON, S.C. (WCSC) - The tropical depression near the South Carolina Coast has officially been upgraded to Tropical Storm Chantal, which is currently about 150 miles south southeast of Charleston., which is currently about 150 miles south southeast of Charleston.