For Grüner See : No gale warning.
We are 75% sure of the situation, because the winds may be stronger than forecast.
Skies progressively clouding over with storms forming. Showers.
In the evening, very cloudy skies becoming totally overcast. Showers becoming less frequent. NNW wind force 4 from the middle of the day. Gusts reaching 40 knots in the evening. Excellent visibility.