For rocher blanc :
No gale warning.
The reliability of the situation is good.
Very cloudy with risk of storms. Possibility of showers In the evening, overcast skies with risk of thundery outbreaks.
Possibility of showers WSW force 3 in the middle of the day becoming SW force 2 in the evening. Gusts reaching 13 knots in the middle of the day. Smooth sea becoming rippled in the evening. Low, short swell from ESE. Excellent visibility becoming poor in the evening.