A northeasterly, weak and particularly variable flow prevails over the South-West of the basin. Over the North and the East, it is westerly, moderate and particularly variable.
For Berck sternes :
No gale warning.
For the night from Thursday to Friday NNE wind force 2 continuing all night. Gusts reaching 11 knots in the early part of the night.
Moderate sea. Low, short swell from WSW then moderate at the end of the night. Excellent visibility. Daytime of Friday 18 september : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes more dense in the afternoon. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, good clear periods but lots of cloud, too.
Chance of light rain. NE force 2 in the morning temporarily NNW in the middle of the day. Gusts reaching 11 knots in the evening. Moderate sea becoming slight in the middle of the day. Moderate, short swell from W then low in the middle of the day. Excellent visibility.
