A southeasterly, very strong and very variable flow prevails over the whole area.
For Berck sternes :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fair weather with mostly clear skies. In the evening, cloud and long sunny periods.
No precipitation. ESE force 3 in the morning becoming force 4 in the middle of the day. Gusts reaching 24 knots in the middle of the day. Slight sea. Low, fairly long swell from W. Poor visibility becoming excellent in the middle of the day.