Bulletin d’avalanche

Ulten Valley

LWD Südtirol
Voir sur la carte

Danger d’avalanche

Above treeline
3 · Marqué
Below treeline
2 · Modéré
Périmé — ce bulletin a expiré 6 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

The avalanche danger is within the uppermost range of danger level 3 (considerable).

Problèmes avalancheux

  • Persistent weak layers

    • Above treeline
    Taille
    3

    Stability: very poor · Frequency: some

  • Wind slab

    • Above 2,000 m
    Taille
    2

    Stability: poor · Frequency: some

  • Wet snow

    • Below 2,200 m
    Taille
    2

    Stability: very poor · Frequency: some

Avalanche Activity

Shady slopes: Weakly bonded old snow requires caution. Very steep sunny slopes: Increase in danger of wet avalanches as a consequence of warming.

Avalanches can be released in the old snowpack and reach large size in isolated cases on west, north and east facing slopes. This applies in case of a single winter sport participant. The avalanche prone locations are to be found in particular above the tree line. In their paths avalanches can entrain the wet snow. This extends the avalanche runout distances. The wind has transported some snow. In particular adjacent to ridgelines and in gullies and bowls as well as at elevated altitudes sometimes avalanche prone wind slabs formed. As a consequence of warming during the day and solar radiation small and medium-sized wet avalanches are possible. This applies in particular on very steep sunny slopes below approximately 2200 m. The runout zones are to be treated with caution.

Snowpack Structure

Up to 20 cm of snow, and even more in some localities, fell in the last few days. The wind has transported some snow. Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes. Outgoing longwave radiation during the night will be reduced. The weather conditions as the day progresses will give rise to gradual and thorough wetting of the snowpack. This applies on very steep sunny slopes below approximately 2200 m.

Tendency

The activity of wet avalanches will gradually increase.

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

Régions couvertes