For Hilton Head Reef :
No gale warning.
The reliability of the situation is good.
Very cloudy. No precipitation. In the evening, good clear periods but lots of cloud, too.
Risk of showers in the early hours. S force 4 in the middle of the day turning SW force 3 in the evening. Gusts reaching 21 knots in the middle of the day. Slight sea. Low, fairly long swell from ENE. Excellent visibility becoming reduced by mist in the evening.