For Gwynn Island Reef :
No gale warning.
The reliability of the situation is very good.
A few fair-weather cumulus clouds in the morning, some sun but cloud building in the afternoon. No precipitation. In the evening, very cloudy skies becoming totally overcast.
No precipitation. NNW force 2 turning SE force 3 in the middle of the day then SSE force 4. Gusts reaching 18 knots in the evening. Smooth to slight sea temporarily smooth in the middle of the day. Low, short swell from S. Excellent visibility.