Bulletin d’avalanche

Lasörling Group

LWD Südtirol
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Danger d’avalanche

Above treeline
4 · Fort
Below treeline
3 · Marqué
Périmé — ce bulletin a expiré 3 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Natural avalanches are to be expected.

Problèmes avalancheux

  • Wind slab

    • Above treeline
    Taille
    3

    Stability: very poor · Frequency: many

  • Gliding snow

    • Below 2,400 m
    Taille
    2

    Stability: very poor · Frequency: some

  • New snow

    • Below treeline
    Taille
    2

    Stability: poor · Frequency: some

Avalanche Activity

The avalanche conditions are critical.

The large quantity of fresh snow and the extensive wind slabs that are being formed by the storm force wind are prone to triggering in all aspects above the tree line. The avalanche prone locations are numerous. Avalanche prone locations are to be found also in areas close to the tree line. As the precipitation becomes more intense natural avalanches are to be expected. In particular on north and east facing slopes avalanches can be released in the various layers of new snow and reach large size. Additionally in very isolated cases avalanches can also penetrate deep layers and reach very large size. In addition a substantial danger of gliding avalanches exists. This applies on steep grassy slopes in all aspects in particular below approximately 2400 m. Caution is to be exercised in areas with glide cracks.

Snowpack Structure

60 to 80 cm of snow, and even more in some localities, will fall on Friday above approximately 1500 m. The wind will be storm force. The westerly wind will transport the new snow significantly. The new snow and wind slabs will be deposited on soft layers in particular on shady slopes above the tree line. The various wind slabs have bonded insufficiently with each other and the old snowpack. Isolated avalanche prone weak layers exist in the bottom section of the old snowpack on rather lightly snow-covered shady slopes.

Tendency

The new snow and wind slabs remain prone to triggering at elevated altitudes. With the end of the intense snowfall, the natural avalanche activity will decrease. Medium-sized and, in isolated cases, large gliding avalanches are possible on steep grassy slopes.

Bulletin data: Avalanche Warning Service South Tyrol, avalanche.report (CC BY 4.0)

Régions couvertes