A northerly, very strong and mostly variable flow prevails over the West and the North of the basin. Over the South-East, it is westerly, very strong and mostly variable.
For Trench :
Warning moderate gale.
The reliability of the situation is very good.
Good clear periods but lots of cloud, too. Light showers. In the evening, good clear periods but cloud building.
Light showers. NNW force 7 in the middle of the day weakening force 5 in the evening. Gusts reaching 42 knots in the middle of the day. Moderate sea. Low, fairly long swell from NW. Excellent visibility.