For Urnersee, Sisikon : No gale warning.
We are 85% sure of the situation, because the high pressure system could move in more quickly than forecast.
Good clear periods alternating with cloudy spells, sometimes dense. No precipitation.
In the evening, clear periods developing. Possibility of showers SE force 2 turning NW force 1 in the middle of the day then SSE. Gusts reaching 12 knots in the middle of the day. Excellent visibility.