Bollettino valanghe

Allgäu Alps West

LWD Vorarlberg
Vedi sulla mappa

Pericolo valanghe

Above 2,200 m
4 · Forte
Below 2,200 m
3 · Marcato
Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Attention winter sports enthusiasts: critical conditions

Problemi valanghivi

  • Wind slab

    • Tutte le quote
  • New snow

    • Tutte le quote

Weather Synopsis

Saturday: the heavy snowfall will taper off significantly by midday. In the afternoon, only minor snow showers in the mountains. Some clouds could disperse, particularly in the southern massifs. At 2000 m: -4 degrees. Stormy winds from the north, easing this afternoon.

Tendency

Sunday will begin with sunshine. In the afternoon, cloud cover will move in. In the evening, precipitation will arrive. The snowpack remains prone to triggering and avalanche danger levels will recede only slowly.

Snowpack Structure

As a result of intermittently strong-to-gale strength winds, the most recent batch of fresh fallen snow is being transported. More trigger-sensitive snowdrift accumulations are being generated. Fresh snow and snowdrifts often lie deposited atop unfavourable old snowpack surfaces consisting of surface hoar, melt-freeze encrusted or softened layers. Bonding of fresh snow and drifts to these layers and also inside the snowpack itself is frequently poor. At high altitudes on steep shady slopes there are still older unfavourable intermediate layers inside the snowpack which are not visible to the naked eye. Naturally and artificially triggered reeleases, stability tests and reports from observers confirm the proneness to triggering of the snowpack.

Avalanche Activity

Attention winter sports enthusiasts: critical conditions

High avalanche danger prevails above the treeline. Main problem: fresh snow and fresh snowdrift accumulations. Slab avalanches can trigger naturally in many places or else by minimum additional loading, e.g. one sole person. Also remote triggerings are possible. Avalanches can grow to large size and in isolated cases endanger exposed regions. Danger zones occur in steep terrain in all aspects, also distant from ridgelines, especially behind abrupt discontinuities in the terrain and in gullies and bowls. Frequency and spread of danger zones increase with ascending altitude above the treeline. Whumpf noises and glide-cracks in the snowpack are signals of imminent danger. Activities in backcountry terrain demand restraint. The inexperienced should not leave the secured ski runs. In addition, on steep, seldom-tracked shady slopes at high altitudes, more deeply embedded layers inside the snowpack can be triggered by large additional loading. Furthermore, medium-to-large sized loose-snow avalanches are possible in rocky steep terrain.

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

Regioni coperte