For Park Thalwil : No gale warning.
We are 85% sure of the situation, because the cloud system may be more intense than predicted.
Sunny becoming changeable in the afternoon. No precipitation.
In the evening, skies clearing but continuing risk of storms. Possibility of showers SSW force 1 turning ENE force 2 in the middle of the day then SE. Gusts reaching 18 knots in the evening. Excellent visibility.