There is a 70 percent chance of the system becoming a tropical storm within the next 48 hours, the National Hurricane Center said.

Tropical storm warnings have been issued from Edisto Beach, South Carolina northward to Ocracoke Inlet, North Carolina. The disturbance is being called Potential Tropical Cyclone Eight, a designation used by the National Hurricane Center to denote a storm that has not yet formed but is expected to soon and will bring impacts within the 48-hour window that requires alerts to be issued.