A southwesterly and particularly variable flow prevails over the whole area.
For Calais :
No gale warning.
For the night from Wednesday to Thursday W wind force 4 continuing all night. Gusts reaching 19 knots in the early part of the night.
Slight sea. Low, short swell from WSW. Excellent visibility. Daytime of Thursday 10 september : The atmosphere will remain unstable.
Good clear periods alternating with cloudy spells, rather dense in the morning. Light showers all day. In the evening, cloud and long sunny periods.
Light showers. W wind force 4 continuing all day. Gusts reaching 18 knots all day. Slight sea temporarily smooth to slight in the middle of the day. Low, short swell from WSW. Excellent visibility.