High 1024 hPa centered on Switzerland remaining almost stationary.
For Portonovo : No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fair weather with mostly clear skies.In the evening, clear skies. WNW force 3 turning N in the middle of the day then SSE force 2. Gusts reaching 17 knots in the middle of the day. Smooth sea temporarily smooth to slight in the middle of the day. Low, short swell from ESE. Excellent visibility.