For Lac du Bourget : 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.
Changeable skies becoming fairly cloud-free in the morning, skies clouding over with storms forming in the afternoon. Risk of some spots of rain in the morning, showers late in the day.
In the evening, overcast skies with risk of thundery outbreaks. Showers. SSE force 1 freshening SW force 3 in the middle of the day then S force 2. Gusts reaching 22 knots in the middle of the day. Good visibility becoming excellent in the middle of the day then good.