A westerly, strong and very variable flow prevails over the whole area.
For Heist :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sun in the morning, sunny, progressively clouding over in the afternoon. No precipitation. In the evening, good clear periods but lots of cloud, too.
Light showers progressively becoming less frequent. NW wind force 4 continuing all day. Gusts reaching 28 knots in the evening. Slight sea. Low, short swell from WSW. Excellent visibility.