For Helmuth Reef :
No gale warning.
The reliability of the situation is good.
Very cloudy with risk of thunderstorms in the morning, storms gradually improving in the afternoon. Showers all day. In the evening, overcast skies with risk of thundery outbreaks.
Light showers progressively becoming less frequent. S force 3 in the morning weakening force 1 in the evening. Gusts reaching 17 knots until the middle of the day. Smooth to slight sea. Low, short swell from SW. Visibility reduced by mist becoming good in the middle of the day then reduced by mist.