A northwesterly and 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.
For the night from Thursday to Friday SSW force 3 in the early part of the night becoming SW force 4. Gusts reaching 19 knots at the end of the night.
Smooth to slight sea becoming slight at the end of the night. Low, short swell from W. Excellent visibility. Daytime of Friday 11 september : The unstable weather will die away during the day.
Skies very cloudy to overcast in the morning, cloud and sun in the afternoon. Some light showers in the morning, possibility of showers in the afternoon. In the evening, relatively clear skies becoming changeable.
WSW force 4 turning WNW force 3 in the middle of the day then W. Gusts reaching 23 knots in the morning. Slight sea. Low, short swell from W. Excellent visibility becoming good in the evening.