Low 1007 hPa centered on the North of Spain moving at 17 knots to the North-North-East to be centered on the South-East of the Bay of Biscay.
For La Tremblade :
No gale warning.
We are 85% sure of the situation, because the atmosphere might be less unstable and showers rarer than forecast.
Little cloud in the morning, skies clouding over with storms forming in the afternoon. No precipitation in the morning, showers late in the day. In the evening, stormy but gradually improving.
Showers. SE force 3 in the morning turning E in the evening. Gusts reaching 19 knots in the evening. Rippled sea. Low, short swell from NNE then from NNW in the evening. Good visibility becoming excellent in the middle of the day then excellent.