High 1026 hPa centered on Switzerland moving at 13 knots to the North to be centered on the center of Germany.
For Gravelines :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sun in the morning, sunny, progressively clouding over in the afternoon. No precipitation. In the evening, cloud cover thickening.
No precipitation. SSE wind force 3 continuing all day. Gusts reaching 15 knots in the middle of the day. Smooth to slight sea becoming smooth in the middle of the day. Low, short swell from N then from N in the evening. Excellent visibility.