High 1030 hPa centered at 120 nautical miles in the West of Fastnet Rock (South-West Ireland) moving at 30 knots to the East to be centered on Wales.
For Saint-Nazaire :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Clear skies or light cloud. Sun hazing over from time to time. No precipitation. In the evening, hazy skies.
No precipitation. NE force 3 turning ESE force 2 in the middle of the day then W. Gusts reaching 12 knots in the morning. Smooth sea. Low, fairly long swell from SW. Poor visibility becoming good in the middle of the day then excellent.