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.
Sunny becoming changeable in the afternoon. No precipitation. In the evening, skies with few clouds covering over progressively.
No precipitation. S force 2 freshening WSW force 4 in the middle of the day then becoming WNW. Gusts reaching 19 knots in the evening. Smooth to slight sea becoming slight in the middle of the day. Low, fairly long swell from WSW. Excellent visibility becoming good in the middle of the day then excellent.