A northwesterly, weak and particularly variable flow prevails over the whole area. For Le-Crotoy : No gale warning.
For the night from Wednesday to Thursday WNW force 3 in the early part of the night temporarily NW force 2. Gusts reaching 15 knots in the early part of the night. Excellent visibility. Daytime of Thursday 20 august : The atmosphere will remain unstable. Good clear periods alternating with cloudy spells, sometimes dense. Light showers all day.
In the evening, cloudy spells, sometimes dense. Possibility of showers NW wind force 3 continuing all day. Gusts reaching 15 knots in the evening. Excellent visibility.