COLUMBIA, S.C. — South Carolina officials are making another plea for residents to flee the coast as Hurricane Matthew approaches.

Derrec Becker with the state emergency preparedness office said Friday morning people need to evacuate immediately. Becker said dangerous conditions are expected along the East Coast.

Officials are especially worried about the storm surge of water that will flow in from the ocean, driven by strong waves. The storm surge is expected to reach as much as 11 feet anywhere south of Georgetown. A surge of up to 6 feet is possible from Little River south to Georgetown.

He says those leaving the coast should head Upstate or find a shelter in the Midlands.

A hurricane warning is in effect south of Georgetown. A tropical storm warning is in effect north of Georgetown.