A westerly, strong and particularly variable flow prevails over the whole area.
For Pornic :
Warning moderate gale offshore.
The reliability of the situation is poor.
For the night from Wednesday to Thursday W wind force 4 continuing all night. Gusts reaching 23 knots at the end of the night.
Slight sea. Low, short swell from W. Excellent visibility. Daytime of Thursday 22 october : The atmosphere will remain unstable.
Very cloudy skies to overcast. Showers all day. In the evening, very cloudy skies becoming totally overcast.
Showers. WSW force 4 in the morning becoming SW force 5 in the evening. Gusts reaching 28 knots in the evening. Slight sea. Low, short swell from W. Excellent visibility.