For Gwynn Island Reef :
No gale warning.
The reliability of the situation is very good.
Skies changeable to very cloudy. Risk of showers in the morning, no precipitation in the afternoon. In the evening, skies with few clouds.
NW force 3 in the morning turning S force 2 in the evening. Gusts reaching 13 knots in the morning. Smooth to slight sea. Low, short swell from ESE. Visibility reduced by mist becoming good in the middle of the day then poor.