High 1023 hPa centered on the East of the North Sea moving at 44 knots to the South to be centered on Switzerland.
For Plage des Dunes de la Slack : No gale warning.
The reliability of the situation is assessed at 90%.
Skies changeable to very cloudy.No precipitation.In the evening, clear skies. SE force 2 turning WSW in the middle of the day then SW force 3. Gusts reaching 15 knots in the evening. Smooth sea becoming smooth to slight in the evening. Low, short swell from NNW. Excellent visibility.
semaphore stations
Station Boulogne-Sem located 8 km from Plage des Dunes de la Slack