A westerly and very variable flow prevails over the whole area.
For Calais :
No gale warning.
For the night from Tuesday to Wednesday W force 2 in the early part of the night becoming WNW force 3. Gusts reaching 18 knots from the middle of the night.
Slight sea. Low, short swell from NNE. Good visibility becoming excellent in the middle of the night. Daytime of Wednesday 19 august : The atmosphere will remain unstable.
Good clear periods alternating with cloudy spells, sometimes dense. Light showers all day. In the evening, good clear periods but lots of cloud, too.
Possibility of showers WNW wind force 3 continuing all day. Gusts reaching 18 knots in the morning. Slight sea becoming smooth to slight in the middle of the day. Low, short swell from NNE. Excellent visibility.