High 1024 hPa centered at 180 nautical miles in the West of Fastnet Rock (South-West Ireland) moving at 10 knots to the East to be centered on the Celtic Sea.
For Trevou-Treguignec :
No gale warning.
For the night from Thursday to Friday SW force 2 in the early part of the night temporarily force 1. Gusts reaching 12 knots at the end of the night.
Smooth to slight sea becoming slight in the middle of the night. Low, short swell from WNW. Poor visibility becoming poor in the middle of the night then reduced by mist. Daytime of Friday 18 september : The sky will remain changeable.
Skies changeable to very cloudy. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, lots of good clear periods.
Chance of light rain. SW force 2 turning WNW in the middle of the day then NNW. Gusts reaching 12 knots in the morning. Slight sea. Low, fairly long swell from WNW. Visibility reduced by mist becoming excellent in the middle of the day then poor.