Bulletin d’avalanche

Allgäu Alps West

LWD Vorarlberg
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Danger d’avalanche

Above 2,000 m
2 · Modéré
Below 2,000 m
1 · Faible
Périmé — ce bulletin a expiré 2 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Rising avalanche danger above the treeline due to fresh snow and wind

Problèmes avalancheux

  • Wind slab

    • Above 2,000 m
    Taille
    2

    Stability: poor · Frequency: some

Weather Forecast

Widespread rainfall and snowfall in the evening, intermittently heavy. Snowfall level will descend to nearly 600m. Nighttime skies will be largely dry. Sunday will be cloudy all day long, low lying clouds and fog will prevail, and light snowfall will be far-reaching, with uncertain amounts. Temperature at 2000m: -7 degrees. High altitude winds: at moderate velocity from north to east.

Tendency

Depending on fresh fallen snow and wind influence, avalanche danger at high altitudes can rise further by Monday.

Avalanche Activity

Rising avalanche danger above the treeline due to fresh snow and wind

Above the treeline, fresh snowdrifts are accumulating. These are often prone to triggering and easily unleashed as a slab avalanche. Their magnitude and spread tend to increase with ascending altitude. Avalanche headquarters currently has little data from outlying regions about the snowpack, for that reason a cautious on-site evaluation is important. Below the treeline, avalanche danger is low. Isolated danger zone for small triggerings (slides) are possible in steep terrain. The risks of being swept along and forced to take a fall need to be considered.

Snowpack Structure

By Sunday evening, 5-10cm of fresh snow is anticipated, locally up to 15cm. It will fall on a mostly wind-impacted, generally well bonded old snowpack surface. With ascending altitude, paricularly in ridgeline and pass areas, fresh, mostly small snowdrifts masses prevail. These are often minimally bonded with the old snowpack and thus, prone to triggering.

Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)

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