A northerly, moderate and mostly variable flow prevails over the South and the East of the basin. Over the North-West, it is westerly, moderate and mostly variable.
Für Heist :
No gale warning.
We are 85% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.
Cloudy spells, dense at times in the morning, very cloudy with possibility of thunder storms in the afternoon. No precipitation in the morning, heavy showers towards the end of the day. In the evening, very cloudy.
Light showers progressively becoming less frequent. N force 3 becoming NNW force 4 in the middle of the day then NW. Gusts reaching 27 knots in the middle of the day. Smooth to slight sea becoming slight in the evening. Low, short swell from NW. Poor visibility becoming excellent in the middle of the day then good.