Waadtländer Voralpen

Increase in avalanche danger in the course of the day.

Snowpack

Snow layering is mostly favourable north of the Rhône-Rhine line. Especially in the inneralpine regions of Valais and Grisons and on the southern flank of the Alps, weak layers deep in the snowpack may still be released in isolated places. With little precipitation and wind, small snowdrift accumulations have formed over the last few days, especially on the northern flank of the Alps. Below around 2200 m to 2500 m, gliding avalanches are still possible on slippery ground in all aspects. There is about twice as much snow as normal at the beginning of December. Only on the southern flank of the Alps are snow depths below average.

Weather forecast through Saturday, 09.12.2023

During Friday night, the snowfall from west to east will end and it will clear up. In the morning, it will still be quite sunny in the east and south, otherwise it will be cloudy again from the west with new precipitation.

Fresh snow

The snowfall level will be around 1200 m by the morning, rising rapidly in the afternoon to around 2000 m in the west. Above that, the following amounts of snow will fall:

• from the Bernese Oberland to the Glarus Alps: 10 to 15 cm;
• elsewhere on the northern flank of the Alps, in Lower Valais and in Prättigau: 5 to 10 cm;
• otherwise less, on the southern flank of the Alps it will remain mostly dry.

Temperature

At midday at 2000 m, -1 °C, rising noticeably in the afternoon.

Wind

The wind will move from the northwest to the west:

• moderately during the night and in the morning at high altitudes;
• then increasingly strongly in the west, on the northern flank of the Alps and generally at higher altitudes.

Observed weather review Friday, 08.12.2023

It was very cloudy in all regions and it snowed lightly at times.

Fresh snow

The snowfall level was around 1400 m on the northern flank of the Alps and at low altitudes on the southern flank of the Alps. The following levels were recorded:

• Lower Valais, extreme west of the northern flank of the Alps: 5 to 15 cm;
• elsewhere: to a lesser extent.

Temperature

At midday at 2000 m, between +3 °C in the north and -5 °C in the south.

Wind

Wind blew from the west:

• moderate to strong during the night in the north, weak in the south;
• weak to moderate during the day.

Outlook through Monday, 11.12.2023Sunday

Precipitation will fall until around midday on Sunday, with a snowfall level between 2200 m and 1400 m. Around 20 to 30 cm of snow will fall on the northern Alpine ridge. It will be quite sunny at times during the day. The danger of dry avalanches and gliding avalanches will increase across the board in the north but will not change significantly in the south.

Monday

It will be very cloudy in the north and there will be heavy precipitation, especially in Valais and on the northern Alpine ridge. The snowfall level will hover around 2000 m. Above that, 20 to 40 cm of snow will fall, and up to around 60 cm in some regions. It will be partly sunny on the southern flank of the Alps. The danger of dry avalanches and wet snow avalanches will continue to increase in the north, and considerably so in some regions. Towards the south, the avalanche danger will not change significantly.