High 1024 hPa centered on Switzerland remaining almost stationary.
For Boulogne-sur-Mer :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Sunny despite some high cloud in the morning, changeable skies becoming relatively cloud-free in the afternoon. No precipitation. In the evening, relatively cloudless skies clearing.
NNW force 2 becoming N force 3 in the middle of the day then NE. Gusts reaching 19 knots in the evening. Smooth to slight sea. Low, short swell from W. Good visibility becoming excellent in the middle of the day.