Waadtländer Voralpen

Snowpack

Fresh and drifted snow is lying on an unfavourable old snow surface of soft, faceted layers, especially on northern slopes. On south-facing slopes, the connection between the fresh and drifted snow to the old snowpack is more favourable.

In southern Valais, Ticino and Grisons, the old snowpack is faceted and loose. Very occasionally, avalanches may still be triggered in deep layers of the snowpack in these regions.

In the north, the old snowpack is mainly well consolidated.

With the widespread reduced longwave radiation, gliding snow avalanches and isolated wet slides are still possible.

Weather forecast to Tuesday

In the south, conditions will be overcast with light snow. The snowfall level will be at 1200 m. It will be cloudy with bright intervals in the west and very sunny in the east.

Fresh snow

By Tuesday afternoon, the following amounts will have fallen above approximately 1400 m:

• Main Alpine ridge from the Great St. Bernhard to the Bernina region and to the south of there: 5 to 10 cm
• elsewhere mostly dry

Temperature

At midday at 2000 m, between 0 °C in the north and -3 °C in the south.

Wind

Light to moderate from southwesterly directions

Weather review for Monday

Especially in the night to Monday snow fell in some regions. The snowfall level was between 1500 and 1800 m in the north and around 1400 m in the south. There were sunny intervals in the west during the day but elsewhere there was mainly heavy cloud cover.

Fresh snow

Since Sunday, the following amounts have fallen above approximately 2000 m:

• Main Alpine Ridge from Zermatt to the Bernina region and to the south of there: 10 to 20 cm, in northwestern Ticino locally up to 30 cm
• remaining Main Alpine Ridge: 5 to 10 cm
• elsewhere less, mostly dry in the far north

Temperature

At midday at 2000 m, between 0 °C in the north and -2 °C in the south.

Wind

• Overnight in the north there was still strong wind from the south and southerly foehn wind in the foehn valleys
• During the day, winds were mostly light to moderate from southwesterly directions

Outlook

In the south, conditions will remain overcast with snow above approximately 1400 m. Around 20 to 40 cm of fresh snow may have fallen on the central and eastern parts of the southern flank of the Alps by Thursday. Only little snow will fall in other regions with changeable weather. There will be initially light to moderate southwesterly to southerly winds, rising to strong over the course of Thursday. The danger of dry avalanches will increase somewhat with the fresh snow in the south. In the north, there will be hardly any change in avalanche danger. Isolated gliding avalanches will still be possible.