Bulletin d’avalanche

Allgäu Alps Central

LWD Bayern
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Danger d’avalanche

All elevations
2 · Modéré
Périmé — ce bulletin a expiré 2 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Gliding snow on steep grass-covered slopes

Problèmes avalancheux

  • Persistent weak layers

    • Above 1,800 m
    Taille
    2

    Stability: poor · Frequency: some

  • Gliding snow

    • Below 2,000 m
    Taille
    2

    Stability: very poor · Frequency: few

Avalanche Activity

Gliding snow on steep grass-covered slopes

Avalanche danger is moderate. Weak layers in the old snowpack are the main problem Slab avalanches can be triggered even by the weight of one sole person. Danger zones occur in steep ridgeline terrain especially in shady aspects, near ridgelines, in steep high altitude terrain and in transitions from shallow to deep snow, depending on the depth of the snow cover where the winds of recent days have consolidated the upper snow like a slab, medium sized avalanches are possible. Gliding snow requires high attentiveness. Glide-snow avalanches can trigger naturally at any time of day or night, particularly on south-facing steep grass-covered slopes at intermediate altitudes, in some places in shady terrain near the forest rims. They can grow to medium size.

Snowpack Structure

Mild temperatures have helped the snowpack to settle and consolidate. Powder or wind-impacted snow has been generated in ridgeline terrain at high altitudes on north-facing slopes. On sunny slopes, the snowpack surface becomes moist on sunny slopes, during the nighttime hours a melt-freeze crust forms. At high altitudes, there are intermediate layers of faceted crystals and graupel. At low altitudes the snowpack is moist down to the ground. Gliding movements over smooth grass-covered slopes have been observed increasingly frequently.

Tendency

Avalanche danger levels will diminish further.

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

Régions couvertes