For Lac Chambon : 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 fall.
Lots of good clear periods. Light showers.
In the evening, overcast skies. Light rain. WSW wind force 4 from the middle of the day. Gusts reaching 26 knots. Excellent visibility becoming poor in the evening.