For Lac de la Gruyère-Sur Mo : No gale warning.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Very cloudy skies to overcast. No precipitation in the morning, light showers in the afternoon.
In the evening, very cloudy skies becoming totally overcast. Showers of rain and snow. S force 4 turning SW force 3 in the middle of the day then NW force 1. Gusts reaching 21 knots in the middle of the day. Excellent visibility becoming poor in the evening.