Bulletin d’avalanche

Pre Alps

LWD Vorarlberg
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Danger d’avalanche

All elevations· Matin
1 · Faible
All elevations· Après-midi
2 · Modéré
Périmé — ce bulletin a expiré 4 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Problèmes avalancheux

  • Persistent weak layers

    • Toutes altitudes
  • Wet snow

    • Toutes altitudes

Avalanche Activity

Avalanche danger is mostly low, in the afternoon danger is moderate. Danger zones occur in steep shady terrain. Transitions from shallow to deep snow require caution, e.g. at entries into gullies and bowls. Due to higher temperatures and solar radiation, small-to-medium, in isolated cases also large-sized wet-snow and glide-snow avalanches are possible on very steep sunny slopes during the course of the day.

Snowpack Structure

On shady slopes, weak intermediate layers are evident. In higher altitude exposed zones, small snowdrift accumulations are prone to triggering. On very steep sunny slopes and at lower altitudes there is a melt-freeze crust in the early morning hours. Elsewhere the snowpack is still powdery. At intermediate altitudes on shady slopes more than anywhere else, surface hoar can be found. Through daytime warming and solar radiation the snowpack forfeits its firmness on steep sunny slopes.

Weather Synopsis

Nocturnal hours: nighttime skies will be cloudless, the air very dry. Wednesday: cloudless skies once again and mild. At 2000 m: 2-7 degrees. Light SW winds.

Tendency

Persistently sunny, some regional cloudbanks, no significant change in avalanche danger levels is expected. The risks of wet-snow avalanches will diminish as temperatures recede.

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

Régions couvertes