For Kreidesee Hemmoor :
No gale warning.
We are 90% sure of the situation, because the high pressure system could move in more quickly than forecast.
Very cloudy skies to overcast. Risk of black ice. In the evening, very cloudy skies becoming totally overcast.
Snowfalls in the early hours. E wind force 3 continuing all day. Gusts reaching 19 knots in the morning. Rippled sea. Low from N. Poor visibility becoming excellent in the middle of the day then poor.