Snowfall could reach as much as 30 cm (12 inches) in some locations, according to MeteoNews.
Parts of Switzerland experienced an early taste of winter on Wednesday with snow falling at levels as low as 600 metres in some areas.
In the canton of Uri, unprepared motorists remained blocked on the road in the Alps between Gösechen and Andermatt on Wednesday morning because of snow.
Cantonal police said traffic was halted because some cars were not equipped with snow tires, according to a report from 20 Minuten newspaper.
In Graubünden, where the forecast highs for many parts of the canton in eastern Switzerland were zero, snow was forecast through the day.
In the town of Leysin in the Vaud Alps motorists struggled to deal with up to 12 centimetres of snow.
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