Low 1002 hPa centered at 240 nautical miles in the South-South-West of Fastnet Rock (South-West Ireland) moving at 13 knots to the East to be centered at 110 nautical miles in the West of the Île de Sein.
For La Tranche-sur-Mer :
No gale warning.
We are 75% sure of the situation, because the high pressure system could move in more quickly than forecast.
Overcast in the morning, increasing sunny spells in the afternoon. Risk of showers in the morning, possibility of a few spots in the afternoon. In the evening, warning: violent storms.
Violent showers . warning: hail! E force 3 becoming force 4 in the middle of the day then SSE force 5. Gusts reaching 35 knots in the evening. Smooth sea temporarily smooth to slight in the middle of the day. Low, short swell from WSW. Good visibility becoming excellent in the middle of the day.