Low 1006 hPa centered on the North of the Bay of Biscay remaining almost stationary.
For Baie de Lancieux :
No gale warning.
We are 80% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will begin.
For the night from Sunday to Monday SSW force 2 in the early part of the night turning SSE. Gusts reaching 9 knots in the middle of the night.
Smooth sea. Low, fairly long swell from NW. Good visibility becoming poor in the middle of the night then reduced by mist. Daytime of Monday 12 may : Instability will build during the day.
Skies very cloudy, risk of thundery outbreaks during the afternoon. No precipitation in the morning, showers in the afternoon. In the evening, skies clearing but continuing risk of storms.
Light showers progressively becoming less frequent. SE wind force 3 continuing all day. Gusts reaching 18 knots in the middle of the day. Smooth sea becoming smooth to slight in the evening. Low, fairly long swell from NW then short from NNE in the evening. Visibility reduced by mist becoming excellent in the middle of the day then good.