Avalanche forecast

Valgrisenche

Regione Valle d'Aosta
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Avalanche danger

All elevations
2 · Moderate
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Out of date — this forecast expired last year. You’re viewing past conditions, not the current bulletin.

Highlights

As a consequence of snowfall above approximately 1300 m and the moderate to strong southwesterly wind, fresh snow drift accumulations will form in the course of the day.

Avalanche problems

  • Wind slab

    • Above 2,000 m
    Size
    2

    Stability: poor · Frequency: some

  • Gliding snow

    • 1,900 m–2,400 m
    Size
    2

    Stability: poor · Frequency: few

Avalanche Activity

As a consequence of snowfall above approximately 1300 m and the moderate to strong southwesterly wind, fresh snow drift accumulations will form in the course of the day.

The fresh snow and in particular the wind slabs can be released by a single winter sport participant above approximately 2000 m. The fresh wind slabs can be released and reach medium size. Such avalanche prone locations are to be found on extremely steep slopes and in gullies and bowls, and behind abrupt changes in the terrain. The prevalence of the avalanche prone locations will increase in the afternoon. The fresh wind slabs are barely recognisable because of the poor visibility. As the temperature drops hardly any more moist avalanches are possible. Gliding avalanches can also occur at any time. Areas with glide cracks are to be avoided as far as possible.

Snowpack Structure

Over a wide area 20 to 30 cm of snow will fall on Tuesday above approximately 2000 m. In some localities 5 cm of snow fell yesterday above approximately 2000 m. Steep sunny slopes: As a consequence of highly fluctuating temperatures a crust formed on the surface during the last few days. Especially below approximately 2500 m sunny slopes: Relatively hard layers of snow are lying on a moist old snowpack. In shady places that are protected from the wind: Towards its surface, the snowpack is dry and has a loosely bonded surface. Especially steep north, northeast and northwest facing slopes: Towards its base, the snowpack consists of faceted crystals. Snow depths vary greatly above approximately 2200 m, depending on the infuence of the wind. Adjacent to ridgelines and in pass areas and at high altitude a little snow is lying. At low altitude less snow than usual is lying. In the south-east of the region, watch out for the numerous rocks hidden by the little recent snow.

Tendency

On Wednesday as a consequence of new snow and wind there will be an increase in the danger of dry avalanches within the current danger level.

Bulletin data: Regione Autonoma Valle d'Aosta (via EAWS / avalanche.report)

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