Bollettino valanghe

Allgäu Alps West

LWD Vorarlberg
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Pericolo valanghe

Above 2,400 m
2 · Moderato
Below 2,400 m
3 · Marcato
Non aggiornato — questo bollettino è scaduto 5 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

At low and intermediate altitudes, wet-snow; at high altitudes, old snow and small drifts.

Problemi valanghivi

  • Wet snow

    • Below 2,400 m
  • Persistent weak layers

    • Above 2,400 m

Avalanche Activity

At low and intermediate altitudes, wet-snow; at high altitudes, old snow and small drifts.

Following a night of partly cloudy skies, the snowpack hardly freezes below 2400m and is rotten already in the early morning hours. Avalanches can in places be easily triggered, in particular on very steep north-facing slopes at altitudes between 1800 and 2200m. In addition, the likelihood of wet-snow avalanches will increase due to rainfall. Naturally triggered avalanches can be expected; and persons can trigger wet-snow avalanches. Avalanches can sweep along more snow into their plummet path and thereby grow to large size. At high altitudes, small snowdrift accumulations will be generated which - particularly near ridgelines - are prone to triggering. Furthermore, winter sports enthusiasts can trigger avalanches in the near-surface weak layers on high-altitude shady slopes in places. Such danger zones are impossible to recognize. Atop the hardened snowpack surface in high alpine regions, there is danger of being forced to take a fall on steep slopes.

Snowpack Structure

During the course of the day, up to 5cm of fresh snow is anticipated above 2200m, accompanied by wind impact; lower down there will be rainfall. At altitudes between 1800 and 2200m, the snowpack is thoroughly wet, even on north-facing slopes, and the rotten snow at ground level is highly prone to triggering even in the early morning. In high-altitude, steep and shady terain, there are unfavorable intermediate layers in the uppermost metre of the snowpack which in places are prone to triggering. A thick mid-section of compact layers blankets the deep hoar and faceted crystals at the base of the snowpack.

Weather Forecast

Following a night of partly cloudy skies, a compact cloud cover will soon spread out and by midday, rainfall and wind will set in from the north. Starting in late afternoon, only isolated showers are expected. Temperature at 2000m: 3 degrees; at 3000m: -3 degrees. Moderate to strong-velocity westerly-to-northwesterly winds at high altitudes, in high alpine regions storm-strength gusts are anticipated..

Tendency

After weather conditions improve, the daily danger-cycle will return.

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

Regioni coperte