Weather-Watch – Lots of rain and stormy winds – Meteo

• On Thursday it will rain intermittently, with a lot of precipitation expected, especially in the west.
• In the Alpine valleys, strong to stormy foehn winds will blow on Thursday.
• There will be stormy to hurricane-force gusts in the mountains on Thursday and Friday. In the lowlands, storm gusts are to be expected, especially on Friday.
• During the night on Saturday the snow line dropped to 1800 m to locally 1400 m.

Precipitation

From Thursday to Saturday, the storm “Aitor” will pass north of Switzerland. By Thursday evening, 20 to 50 mm of rain had fallen in many places, and in some areas even up to 80 mm. The least rain will fall in the foehn regions such as northern Graubünden. On Friday, the partly persistent rain will turn into showers, which will continue on Saturday, especially on the northern slopes of the Alps.

The heavy rainfall can cause streams and small rivers to swell. Local flooding and landslides cannot be ruled out. It is advisable to keep drains clear and avoid torrents.

With the cold front, temperatures will drop significantly on Saturday and the snow line will drop to 1800 m in the inner Alps and to 1400 m along the foothills of the Alps. This means that winter tires will be necessary on the higher Alpine passes.

Southwest storm and foehn

During the night into Thursday and on Thursday, strong to stormy foehn winds will blow in the Alpine valleys. Wind speeds in typical foehn valleys will reach 75 to 110 km/h locally. At the same time, storm and isolated hurricane gusts will occur on the Jura heights and in the mountains.

In the lowlands, there will be gusty winds on Thursday, but especially on Friday, gusts of 40 to 75 km/h are to be expected. There is a risk that individual branches will break off from trees that still have plenty of leaves.

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