Bulletin d’avalanche

Valsavaranche

Regione Valle d'Aosta
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Danger d’avalanche

Above 2,500 m
3 · Marqué
Below 2,500 m
1 · Faible
Périmé — ce bulletin a expiré 4 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Moist avalanches are the main danger.

Problèmes avalancheux

  • Wet snow

    • Toutes altitudes
  • Persistent weak layers

    • Toutes altitudes

Avalanche Activity

Moist avalanches are the main danger.

The early morning will see favourable conditions, but the danger of wet avalanches will increase later. Significant increase in danger of moist and wet avalanches as a consequence of warming during the day and solar radiation. Medium-sized and, in isolated cases, large natural moist avalanches are possible, in the event of an overcast night in particular on steep sunny slopes, in particular. Intermediate altitudes,, in isolated cases also on very steep shady slopes. As the day progresses, a few gliding avalanches and moist snow slides are possible. Backcountry tours, off-piste skiing and ascents to alpine cabins should be concluded timely. Faceted weak layers exist in the top section of the old snowpack on steep shady slopes. In addition the clearly visible wind slabs of the weekend in gullies and bowls are capable of being triggered in very isolated cases. Even single winter sport participants can release avalanches in some places, including medium-sized ones. Remotely triggered avalanches are possible in isolated cases. The prevalence of avalanche prone locations and likelihood of triggering will increase with altitude.

Snowpack Structure

The wind slabs of the weekend can be released in isolated cases in particular on north to northwest to northeast facing aspects above approximately 2700 m. The wind slabs are clearly recognisable. The old snowpack will be stable on sunny slopes. Shady slopes: Towards its surface, the snowpack is unfavourably layered. Faceted weak layers exist in the old snowpack. Less snow than usual is lying. On sunny slopes below approximately 2200 m from a snow sport perspective, insufficient snow is lying. On Monday on steep sunny slopes several small and medium-sized avalanches were reported. This applies below approximately 2800 m, as well as at the base of rock walls.

Tendency

The danger of dry avalanches will decrease gradually. The danger of wet avalanches will already exist in the early morning.

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

Régions couvertes