A northeasterly, weak and particularly variable flow prevails over the South of the basin. Over the North, it is westerly, weak and particularly variable.
For Calais :
No gale warning.
For the night from Wednesday to Thursday NE force 2 becoming ENE force 1 in the middle of the night then NNE. Gusts reaching 11 knots in the early part of the night.
Slight sea becoming smooth to slight at the end of the night. Low, short swell from N. Excellent visibility. Daytime of Thursday 20 august : The sky will remain changeable.
Good clear periods alternating with cloudy spells, sometimes dense. The risk of seeing rain will remain low. In the evening, cloudy spells, sometimes dense.
Possibility of showers W force 1 in the morning becoming force 2 in the evening. Gusts reaching 13 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low, short swell from N. Excellent visibility becoming excellent in the evening.