High 1020 hPa centered on the North of the Bay of Biscay remaining almost stationary.
For Trevou-Treguignec : No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy.No precipitation.In the evening, clear periods developing. No precipitation. WNW force 3 in the middle of the day becoming W force 2 in the evening. Gusts reaching 15 knots in the middle of the day. Smooth to slight sea. Low, fairly long swell from NW. Excellent visibility.
semaphore stations
Station Ploumanac'H located 8 km from Trevou-Treguignec