A southeasterly, strong and very variable flow prevails over the North-East of the basin. Over the South-East, it is southwesterly, moderate and variable. Over the West, it is northwesterly, very strong and very variable.
For Penthièvre :
Warning moderate gale offshore.
We are 70% sure of the situation, because the high pressure system could move in more quickly than forecast.
Skies changeable, very cloudy for a time in the morning. Light showers all day. In the evening, good clear periods but lots of cloud, too.
Showers towards the end of the night. WNW force 6 becoming force 5 in the middle of the day then W. Gusts reaching 40 knots in the morning. Rough sea becoming moderate in the evening. Moderate, fairly long swell from SW. Excellent visibility.