A northwesterly, strong and very variable flow prevails over the whole area.
For Berck sternes :
No gale warning.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
Overcast skies. Light rain. In the evening, clear periods developing.
Possibility of showers NW force 3 in the middle of the day turning W in the evening. Gusts reaching 18 knots in the evening. Smooth to slight sea. Low, short swell from NW. Excellent visibility.