Bollettino valanghe

Allgäu Alps West

LWD Vorarlberg
Vedi sulla mappa

Pericolo valanghe

Above 2,200 m
2 · Moderato
Below 2,200 m
1 · Debole
Non aggiornato — questo bollettino è scaduto 2 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Fresh snowdrifts and old snow are main danger. Loose-snow and glide-snow avalanches due to higher temperatures.

Problemi valanghivi

  • Wind slab

    • Above 2,200 m
    Dimensione
    2

    Stability: poor · Frequency: some

  • Persistent weak layers

    • Above 2,400 m
    Dimensione
    2

    Stability: poor · Frequency: some

Weather Forecast

At high altitudes the air will become moister, generating widespread cloudbanks above the summits and permitting only limited sunshine. The zero-degree level will ascend to 2900m. At 2000m: +6 degrees. Winds will be moderate to brisk from the west.

Tendency

Snowdrifts and old snow are the main danger at high altitudes. At low altitudes, slides and small glide-snow avalanches are possible, esp. on steep sunny slopes.

Avalanche Activity

Fresh snowdrifts and old snow are main danger. Loose-snow and glide-snow avalanches due to higher temperatures.

At high altitudes, fresh snowdrift accumulations are often still prone to triggering. Danger zones occur mostly on shady slopes behind protruberances in the landscape, in gullies and bowls and on wind-loaded slopes. Size and spread tend to increase with ascending altitude. Small-to-medium slab avalanches can be triggered even by the weight of one single skier. Above 2400m, isolated avalanches can be triggered in the old snow anda grow to medium size. At low altitudes and particularly on sunny slopes, moist loose-snow avalanches and small-to-medium glide-snow avalanches can trigger due to the higher temperatures.

Snowpack Structure

The most recent snowfall and snowdrifts are deposited mostly on steep shady slopes atop metamorphosed old snowpack layers or atop surface hoar, poorly bonded with the old snowpack surface with ascending altitude. In places in high-altitude shady spots and where the snow is shallow, weak faceted layers are evident in the snowpack. All in all, the snowpack is highly varied: ridges are often windblown, gullies and bowls are filled to the brim with snow.

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

Regioni coperte