A southeasterly, very strong and mostly variable flow prevails over the whole area.
For Gravelines :
No gale warning.
The reliability of the situation is assessed at 90%.
Skies changeable to very cloudy. No precipitation. In the evening, overcast and misty, reduced visibility.
No precipitation. S force 2 turning WNW force 1 in the middle of the day then ENE. Gusts reaching 9 knots in the morning. Smooth to slight sea becoming smooth in the evening. Low, short swell from W. Visibility reduced by mist becoming poor in the middle of the day then reduced by fog.