For Gwynn Island Reef :
No gale warning.
The reliability of the situation is very good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
ESE force 3 in the middle of the day turning SSE force 4 in the evening. Gusts reaching 22 knots in the evening. Smooth to slight sea becoming slight in the evening. Low, short swell from NE. Excellent visibility.