For Chapelle sur erdre :
No gale warning.
We are 85% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.
Skies very cloudy to overcast in the morning, skies clearing but storms likely in the afternoon. No precipitation in the morning, light showers dying away progressively in the afternoon. In the evening, clear spells, risk of mist forming.
No precipitation. S force 5 in the morning weakening force 3 in the evening. Gusts reaching 33 knots in the middle of the day. Slight sea. Low, fairly long swell from WSW. Excellent visibility becoming reduced by mist in the evening.