Although forecasters do not expect Chantal to become a hurricane, the storm is likely to dump several inches of heavy rainfall across the Carolinas.

Meanwhile in the Pacific, a system offshore from southern Mexico is forecast to become a tropical depression or tropical storm by sometime on June 29, the hurricane center said. The system, a few hundred miles south-southwest of the Gulf of Tehuantepec, is forecast to bring heavy rains to parts of Central America and southern Mexico.