For Chapelle sur erdre :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Warm sun all day. In the evening, clear skies.
NE wind force 4 continuing all day. Gusts reaching 23 knots in the middle of the day. Smooth sea. Low, fairly long swell from WNW. Excellent visibility.