For rocher blanc :
No gale warning.
The reliability of the situation is good.
Skies changeable to very cloudy. Risk of black ice. In the evening, skies with few clouds covering over progressively.
No precipitation. NNW force 4 becoming force 3 in the middle of the day then N. Gusts reaching 21 knots in the morning. Slight sea becoming smooth to slight in the evening. Low, short swell from N. Excellent visibility becoming good in the evening.