We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
In the evening, relatively clear skies becoming changeable. Chance of light rain. ENE wind force 4. Gusts reaching 27 knots in the evening. Smooth sea. Low, short swell from SW. Excellent visibility.
semaphore stations
Station Ile De Groix located 22 km from Vieux passage