Für Urnersee, Sisikon : No gale warning.
We are 80% sure of the situation, because the atmosphere might be less unstable and showers more frequent than forecast.
Sun but cloud increasing in the morning, skies clouding over with storms forming in the afternoon. No precipitation in the morning, possibility of showers in the afternoon.
In the evening, skies clearing but continuing risk of storms. Possibility of showers NNE force 2 turning NNW in the middle of the day then NW. Gusts reaching 12 knots in the middle of the day. Excellent visibility becoming good in the evening.