For U 171 wreck :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Fair weather with mostly clear skies. In the evening, cloud and long sunny periods.
No precipitation. WSW force 2 turning SSW force 3 in the middle of the day then WNW. Gusts reaching 11 knots in the evening. Slight sea. Low, fairly long swell from WSW. Excellent visibility.