For Hilton Head Reef - 100" Barge + tires :
No gale warning.
The reliability of the situation is very good.
Warm sun all day. In the evening, clear skies.
N force 2 turning ESE force 3 in the middle of the day then SE. Gusts reaching 13 knots in the evening. Slight sea. Low, short swell from E. Excellent visibility.