Low 1008 hPa centered on the North of the Bay of Biscay moving at 10 knots to the West to be centered at 170 nautical miles in the West of the Île de Sein.
For Rochefort :
No gale warning.
We are 85% sure of the situation, because in this type of situation, it is difficult to define precisely when the precipitation will end.
Overcast in the morning, very cloudy in the afternoon. Heavy showers becoming less frequent in the morning, possibility of showers in the afternoon. In the evening, very cloudy skies clearing completely.
Chance of light rain. ESE force 2 in the morning turning NNW in the evening. Gusts reaching 9 knots in the middle of the day. Smooth sea. Low, short swell from W. Poor visibility becoming excellent in the middle of the day then excellent.