Saint-Cergue

Snowpack

The new fallen snow from Tuesday and Wednesday will be transported by westerly and northerly winds, which will be strong at times. Widespread wind slabs will form, including some large ones in western regions that have seen heavy snowfall. Particularly on north-facing slopes, these lie on a loosely structured surface and are prone to triggering.

In southern Valais, Ticino and Grisons, the snowpack is weak with many soft layers of faceted crystals. The snowpack structure is most unfavourable in the Engadine and the neighbouring southern valleys of Grisons.

The sliding snow activity will decrease further with the consequence of falling temperatures.

Weather forecast to Wednesday

It will be very cloudy with precipitation. The snowfall level will drop from 1400 m to around 800 m. As the day progresses, there will be brighter spells in Valais and Ticino.

Fresh snow

From Tuesday to Wednesday noon the following amounts will fall above 1400 m:

• Extreme west of Lower Valais and Vaud Alps, western Jura: 10 to 20 cm.
• Elsewhere a widespread 5 to 10 cm.

Temperature

At midday at 2000 m, between -6 °C in the north and -2 °C in the south.

Wind

In the north

• During the night, there will be sometimes strong southwesterly wind.
• During the day, there will be a light to moderate westerly to northwesterly wind.

In the south

• Increasingly strong northerly wind at high altitudes.
• Foehn wind from the north in the valleys.

Weather review for Tuesday

It was very cloudy. Precipitation fell intermittently from the early morning, falling as snow above 1500 m. It was mostly dry in Grisons.

Fresh snow

From Tuesday morning to Tuesday afternoon, the following amounts of snow fell above 1800 m:

• Extreme west of Lower Valais, Vaud Alps and Ticino: 5 to 10 cm.
• Elsewhere a few centimetres or dry.

Temperature

At midday at 2000 m, between -1 °C in the west and south and + 1 °C in the east.

Wind

From the south-west:

• Moderate overnight.
• Moderate to strong during the day.

OutlookThursday

It will be cloudy in the north and another 5 to 10 cm of snow will fall on the northern flank of the Alps above approximately 800 m. There will be sunny intervals in the inneralpine regions, and the south will be sunny. In the north, there will be mostly moderate westerly winds, in the south light to moderate westerly to northerly winds.

The danger of dry avalanches will decrease slightly.

Friday

Conditions will be mostly sunny in the mountains. The temperature at 2000 m will be -4 °C in the west and south and -8 °C in the east. There will be a light to moderate westerly to northerly wind.

The danger of dry avalanches will continue to decrease.