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According to MeteoNews, there was a strong southwest wind of about 10 degrees in Basel and 6 to 9 degrees in the Alpine valleys.
In regions with little wind, temperatures stayed just below freezing. The wind increased significantly in the last hours at higher altitudes. So it blew over the Chasseral in the Bern Jura at 10 pm at 137 kilometers per hour.
#Sturm #Hermin / #Beautiful brought to the mountains # Hurricane blasts, in the west and northwest of Switzerland and in the Alpine valleys #Showers (#Altdorf 116 km / h, #Elm 115 km / h). The wind has dropped a bit, but be careful in the streets, this morning it is falling in some places #Snow. (rv) pic.twitter.com/OO9qoTU841
– MeteoNews (@MeteoNewsAG) December 28, 2020
In western Switzerland, wind gusts reached 130 kilometers per hour at La Dôle in the Vaudois Alps, while in Moléson, in the south of the canton of Friborg, they reached 124 kilometers per hour. But the wind was also blowing strong in Graubünden and reached 119 km / h in Piz Martegnas. At Altdorf UR it was 107 km / h.
On the other hand, things stayed quiet in the middle between Bern and Lake Constance, as announced by meteocentrale.ch on Twitter. Therefore, the foehn over the Alps should continue until midnight and then decrease. The new week begins with snow, rain, but also with sun, as SRF Meteo writes on its Internet portal.
Great risk of avalanches
In the Bernese Alps, in central Switzerland to the Graubünden Mountains, there is a high level 4 avalanche hazard, as reported by the Institute for Snow and Avalanche Research (SLF) on its website. The southern foehn intensively carried the fresh snow.
New drifting snow accumulations could be triggered very easily. Spontaneous avalanches are expected, especially at night. In some places, avalanches could break out in old snow. The places prone to avalanches are found particularly on the northern slopes above 2000 meters.
Some of the avalanches can be significant. It takes a lot of experience in avalanche hazard assessment and great restraint. On Monday night and during the day, precipitation occasionally falls at low altitudes. Only in the foehn areas on the north central and eastern slopes of the Alps does it remain largely dry.
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