According to the US National Hurricane Center (NHC), Ian will head north east, reaching the coast of South Carolina on Friday night (30 September) and central areas of North Carolina on Saturday morning (1 October).
In a hurricane advisory bulletin, the NHC said: "Maximum sustained winds are near 85mph with higher gusts. Little change in strength is expected before Ian reaches the coast later today.
"Rapid weakening is expected after landfall, and Ian is forecast to become an extratropical low over North Carolina tonight or on Saturday (1 October). The low is then expected to dissipate by Saturday night."