A westerly, weak and particularly variable flow prevails over the whole area.
For Calais :
No gale warning.
For the night from Friday to Saturday W force 4 in the early part of the night becoming force 3. Gusts reaching 18 knots in the early part of the night.
Slight sea. Low, short swell from S. Excellent visibility. Daytime of Saturday 12 september : The atmosphere will remain unstable.
Skies changeable to very cloudy. Light showers all day. In the evening, very cloudy.
Light showers. W wind force 3 continuing all day. Gusts reaching 16 knots. Slight sea. Low, short swell from N. Excellent visibility becoming excellent in the middle of the day then good.