For Lac de Tanay : No gale warning.
We are 75% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.
Skies very cloudy, risk of some thundery outbreaks. Possibility of showers late in the morning, showers in the afternoon.
In the evening, very cloudy with risk of storms. Showers becoming less frequent. WNW force 1 becoming NW force 2 in the middle of the day then SSE force 1. Gusts reaching 14 knots in the middle of the day. Excellent visibility becoming excellent in the evening.