For Etang de Cergy : No gale warning.
We are 80% sure of the situation, because hail may not be as easy to predict.
Very cloudy with risk of storms. Light rain gradually becoming less frequent.
In the evening, changeable skies with risk of storms. Possibility of showers S wind force 4 from the middle of the day. Gusts reaching 28 knots in the evening. Good visibility becoming excellent in the evening.