Yverdon - Bevaix

Considerable avalanche danger will be encountered over a wide area. Fresh wind slabs require caution.

Snowpack

The freshly fallen snow and snowdrift of recent days is increasingly settling and stabilising. With strong westerly winds in the mountains and southerly winds in the Alpine valleys of the north, snowdrift accumulations that are prone to triggering are developing. Especially in the inneralpine regions of Valais and Grisons and on the southern flanks of the Alps, weak layers deep in the old snowpack may be released in some cases. Below around 2000 m, layers of the snowpack that are near the ground are sometimes moist. This means that gliding avalanches are still to be expected. In many areas, there is about twice as much snow as there normally is at the beginning of December. Only on the southern flank of the Alps are snow depths below average.

Weather forecast through Monday, 04.12.2023

It will be cloudy. There will be snowfall in the west from the late morning. A little snow will also fall in the south. The snowfall level will increase to 1200 m in the Jura and the Prealps, while it will remain at low altitudes in Valais and Ticino.

Fresh snow

Above approximately 1400 m until Monday afternoon:

• the Jura, the far west of Lower Valais and northern Lower Valais: 5 to 10 cm;
• elsewhere, a few centimetres, dry in the northeast.

Temperature

At midday at 2000 m, between -4 °C in the north and -9 °C in the south.

Wind

• There will be strong southwesterly winds in the mountains.
• In the Alpine valleys of the north, there will be strong southerly winds.

Observed weather review Sunday, 03.12.2023

After what was an increasingly clear night, it was sunny and cold.

Fresh snow

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Temperature

At midday at 2000 m, around -8 °C

Wind

There were relatively moderate to strong northerly winds during the night on, and to the south of, the main Alpine Ridge. During the day, winds were mostly weak to moderate, turning to the southwest.

Outlook through Wednesday, 06.12.2023Tuesday

There will be widespread snowfall, mostly in the west. There 20 to 30 cm of freshly fallen snow is expected. The westerly wind will be moderate to strong. The snowfall level will again drop to low altitudes. In the afternoon the skies will clear in the south. The avalanche danger will increase slightly in the west. In the other regions, it will remain largely unchanged.

Wednesday

There will be some snowfall in the north. The snowfall level will be at low altitudes. In the afternoon, it will brighten up from the west. It will be fairly sunny in the south with northerly winds. There will be hardly any change in the avalanche danger.