High 1026 hPa centered on Switzerland moving at 13 knots to the North-West to be centered on the North of France.
For Plage des Dunes de la Slack : 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, relatively cloudless skies clearing. SE force 2 turning W force 3 in the middle of the day then ENE. Gusts reaching 11 knots from the middle of the day. Slight sea becoming smooth to slight in the middle of the day. Low, short swell from WSW. Good visibility becoming excellent in the middle of the day.
semaphore stations
Station Boulogne-Sem located 8 km from Plage des Dunes de la Slack
* +33 1 77 86 86 86: short number of forecasts for France accessible from France - €2.99 per call** 0899 70 12 34: number of forecasts for France and the World accessible from France - €2.99 per call