Bulletin d’avalanche

Bregenzerwald Mountains

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

Main problem: fresh and older snowdrift accumulations

Problèmes avalancheux

  • Wind slab

    • Above 2,000 m
    Taille
    2

    Stability: poor · Frequency: some

  • Gliding snow

    • Toutes altitudes
    Taille
    1

    Stability: very poor · Frequency: few

Avalanche Activity

Main problem: fresh and older snowdrift accumulations

Fresh and older snowdrift accumulations can be triggered even by one sole skier. Danger zones occur particularly in steep shady terrain, in wind-loaded gullies and bowls and behind protruberances in the landscape. Size and frequency of danger zones tend to increase with ascending altitude. In zones where there has been rain impact, small wet-snow and glide-snow avalanches are possible. Caution urged below glide cracks.

Snowpack Structure

The snowpack was moistened and weakened up to high altitudes by rainfall. Some naturally triggered glide-snow fractures and wet-snow avalanches have been observed. Following the receding rainfall clouds in the afternoon, the danger of wet-snow avalanches will decrease somewhat. Stormy foehn winds will continue to transport the fresh and loose snow, forming trigger-sensitive snowdrift accumlulations, these lie deposited at high altitudes particularly on shady slopes atop softened layers. Also inside the snowdrifts themselves are trigger-sensitive intermediate layers. On sunny slopes the bonding to the old snowpack surface is better.

Weather Forecast

Stormy winds! High-altitude cloudbanks will pass through, hamper the sunshine intermittently, often noticeably. Mild: zero-degree level at 2700m at midday. At 2000m: 0 to +4 degrees. Storm S/SW winds at high altitude.

Tendency

As a result of strong to stormy W/SW winds, loose snow will be transported. Danger of dry-snow avalanches will not change significantly. Danger of wet-snow avalanches will decrease.

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

Régions couvertes