A northwesterly, weak and particularly variable flow prevails over the South-West and the North-East of the basin. Over the North-West and the South-East, it is southwesterly, weak and particularly variable.
For Calais :
No gale warning.
For the night from Saturday to Sunday SW wind force 2 continuing all night. Gusts reaching 15 knots until the middle of the night.
Slight sea. Low, short swell from NNE. Good visibility becoming good in the middle of the night then poor. Daytime of Sunday 19 april : The unsettled weather will become more unpredictable in the second half of the day.
Good clear periods alternating with cloudy spells, sometimes dense. Some light showers from late morning. In the evening, cloudy spells, sometimes dense.
Light showers. SW force 2 turning NNE in the middle of the day then NE. Gusts reaching 17 knots in the evening. Slight sea becoming moderate in the evening. Low, short swell from NNE. Poor visibility becoming good in the middle of the day.