A westerly, strong and mostly variable flow prevails over the whole area.
For Heist :
Warning strong breeze offshore.
We are 80% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.
Skies very cloudy, becoming totally overcast during the morning, very cloudy with possibility of thunder storms in the afternoon. Risk of showers in the morning, light showers in the afternoon. In the evening, very cloudy with risk of storms.
Possibility of showers SW force 4 in the morning turning WNW in the evening. Gusts reaching 22 knots in the evening. Slight sea. Low, short swell from WNW. Excellent visibility.