Bollettino valanghe

Waadtländer Voralpen

SLF
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Pericolo valanghe

All elevations
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Problemi valanghivi

  • Wet snow

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Snowpack Structure

Snowpack

New and drifted snow from the last few days is sometimes prone to triggering, particularly at high altitudes. The old snowpack is water-saturated on southern slopes up to the high Alpine regions, on eastern and western slopes up to around 3000 m, and on northern slopes up to a maximum of 2800 m. Significant cooling prevented the progression of the saturation of the snowpack. This appreciably reduced the probability of wet avalanches. However, individual wet snow avalanches and superficial snow slides are still possible.

Weather Forecast

Weather forecast to Thursday

Conditions will often be cloudy. Some snow will fall during the night, above approximately 1600 m in the east, and above approximately 1900 m in the west and south. There will be isolated showers during the day. There will be some bright spells in the south and in the high Alpine regions of the Bernese Oberland and Valais.

Fresh snow

From Wednesday evening to Thursday evening, the following amounts of fresh snow are expected above approximately 2200 m:

  • Northern Grisons and Lower Engadine: 10 to 20 cm
  • Otherwise a few centimetres over a wide area

Temperature

At midday at 2000 m, between 1 °C in the north and +3 °C in the south

Wind

Mainly light

Weather Review

Weather review for Wednesday

It was mostly cloudy. Some snow fell above approximately 2000 m, particularly in the south.

Fresh snow

From Tuesday evening until Wednesday evening, the following amounts of fresh snow fell above approximately 2200 m:

  • Main Alpine Ridge and south of it: 5 to 15 cm, up to 20 cm on the central part of the southern flank of the Alps, in Val Bregaglia and in Val Poschiavo
  • elsewhere a few centimetres or dry

Temperature

At midday at 2000 m, around +3 °C

Wind

Light to moderate from southerly directions

Tendency

Outlook

On Friday, some snow will fall over a wide area above approximately 2000 m. There will be a few brighter spells in the west as the day progresses. On Saturday, after a clear night, it will be quite sunny and appreciably warmer. The zero-degree level will rise to 2600 m. As the day progresses, there will be cumulus clouds and isolated showers. The wind will be mostly light on both days.

The danger of dry avalanches will decrease, but only slowly on north-facing slopes in the high Alpine regions. On Saturday, loose snow avalanches are expected from the new fallen snow as a result of solar radiation and warmer temperatures. Individual wet avalanches are also possible.

Bulletin data: WSL Institute for Snow and Avalanche Research SLF (CC BY 4.0)

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