High 1025 hPa centered at 170 nautical miles in the West of Fastnet Rock (South-West Ireland) moving at 10 knots to the South-South-East.
For Piriac-sur-Mer :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Little cloud in the morning, hazy cloud giving way to brightening skies in the afternoon. No precipitation. In the evening, hazy cloud giving way to increasingly brighter skies.
No precipitation. NE force 3 turning W force 4 in the middle of the day then WNW. Gusts reaching 19 knots in the evening. Smooth sea becoming smooth to slight in the evening. Low, short swell from WNW. Excellent visibility becoming excellent in the middle of the day.