For Alpnachersee-Grenzstein : No gale warning.
We are 90% sure of the situation, because flows might be far more disturbed than forecast.
Overcast skies. The risk of seeing rain will remain low.
In the evening, clear periods developing. Chance of light rain. NW force 1 turning WSW in the middle of the day then SSW. Gusts reaching 7 knots in the morning. Excellent visibility.