November could be the hottest in Switzerland since the start of official measures in 1864. Added to that it has hardly rained for about four weeks north of the Alps. Many ski resorts will postpone opening due to lack of snow.
Average temperatures in the first half of the month were between 3 and 7 degrees, well above average for the month of November, according to SF Meteo on Wednesday.
The values were extreme in places: it was 24.1 degrees in Glarus on the 5th November, the highest recorded temperature in the region since 1958. The outlook is for more of the same over next week although the weather service won’t make predictions much beyond.
The mild weather has been made worse by near drought conditions. The latest heavy rains north of the Alps date back to October 19, according to SF Meteo. In November, only a few liters per square meter fell here and there in western Switzerland and has yet not rained in several locations across the Sarine (districts around Fribourg). And no precipitation is expected this week.
“The combination of mild temperatures and drought this season is amazing,” according to snow and avalanche expert Robert Bolognesi, in an interview published Wednesday in the newspaper “Le Temps”.
Lack of snow
The tourism industry is suffering. In some places, snow canons, increasingly used by the stations cannot even work at night as temperatures do not fall below zero. They have only been used above 3000 meters.
Some ski resorts will now open later than expected. Verbier, which is usually the first to start the season in Valais, has postponed its opening to December 3-4 at the earliest.
In the Sarine, lifts at Andermatt (UR) should have started on November 12, but the season will start at the earliest on November 26. At Davos (GR), where temperatures exceed 9 degrees during the day, the season start has been delayed by a week to November 26. However Saas-Fee and Zermatt already has 50km of open runs.
Robert Bolognesi, the rains over the summer have not replaced the lack of rainfall this spring. “We’re going to break records, this year is a historic drought, especially in the central Valais.”
Sion recorded a record low with only 300 mm of rainfall in 2011, against 700 mm annual average. Below 250 mm, it is considered to be a “desert”. In this region, it could still rain the next few weeks, but “it would take a flood to compensate for the lack of water by the end of the year.”
Consequences: the dry and hot year has worsened the retreat of glaciers with no snow cover to protect them. The smallest south facing glaciers can no longer regenerate and could disappear in about thirty years, warns Robert Bolognesi. Without the natural storage of water in dams, “the whole ecology and economy of the region would be disrupted during a year like we just experienced.”
http://www.tsr.ch/info/suisse/3588158-chaleur-et-secheresse-inquietent-les-stations-de-ski.html