Bulletin d’avalanche

Pre Alps

LWD Vorarlberg
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Danger d’avalanche

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

Points saillants

Fresh snow and snowdrifts are prone to triggering

Problèmes avalancheux

  • Wind slab

    • Above treeline

Avalanche Activity

Fresh snow and snowdrifts are prone to triggering

Fresh snow and fresh snowdrift accumulations are often triggerable by one sole skier and then possibly growing to medium size. Danger zones occur mostly in steep shady terrain, also behind protruberances in the landscape and in wind-loaded gullies and bowls. In isolated cases, small slab avalanches can be triggered on high-altitude extremely steep shady slopes also in the old snow.

Snowpack Structure

Intermittently strong westerly winds are transporting the fresh fallen snow and generating snowdrift accumulations. Fresh snow and drifts are poorly-to-moderately bonded with the often soft layers of the old snowpack. The snowdrifts are often blanketed by fresh snowfall, the snowpack below them is generally well consolidated. At lower altitudes the fresh snow often falls on bare ground.

Weather Forecast

During the nocturnal hours, clouds will dominate, light snowfall is expected between 900 and 1100m. Wednesday morning will begin with densely clouded skies and final snow showers in the Bregenzerwald, thereafter clouds will rapidly disperse and sunshine will soon prevail with only a few clouds. At 2000m: -5 to 1 degree Brisk to strong W/SW winds.

Tendency

Fresh snow and drifts remain prone to triggering

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

Régions couvertes