For Osterholz :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Skies changeable to very cloudy. Some showers from late morning. In the evening, very cloudy.
Light showers. SW force 3 becoming force 4 in the middle of the day then SSW. Gusts reaching 25 knots in the middle of the day. Smooth sea temporarily smooth to slight in the middle of the day. Low from N. Excellent visibility.