For Osterholz :
No gale warning.
We are 80% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy skies. Overcast for a time in the morning. No precipitation. In the evening, very cloudy skies becoming totally overcast.
No precipitation. SW wind force 4 continuing all day. Gusts reaching 25 knots in the middle of the day. Smooth sea. Low, short swell from SE. Good visibility becoming excellent in the middle of the day then good.