Bollettino valanghe

Bregenzerwald Mountains

LWD Vorarlberg
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Pericolo valanghe

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

In sintesi

Freshly generated snowdrifts require attentiveness.

Problemi valanghivi

  • Wind slab

    • Above treeline
    Dimensione
    2

    Stability: poor · Frequency: some

  • Gliding snow

    • Tutte le quote
    Dimensione
    1

    Stability: fair · Frequency: few

Avalanche Activity

Freshly generated snowdrifts require attentiveness.

Avalanche danger above the treeline is moderate, below that altitude danger is low. Snowdrift accumulations above the treeline can be triggered by one single skier and in isolated cases grow to medium size. Danger zones occur especially behind protruberances in the landscape, in gullies and bowls, and on wind-loaded slopes. Size and frequency of these avalanche prone locations tend to increase with ascending altitude. Below the treeline avalanche danger is low. At low altitudes small glide-snow avalanches are possible on steep grass-covered slopes.

Snowpack Structure

Strong to storm-strength W/NW winds are transporting 25cm-deep fresh snow, in barrier cloud zones up to 35cm. The snowdrifts which accumulate are being deposited atop a weak old snowpack surface, particularly on shady high altitude slopes, on sunny slopes often atop a thin melt-freeze crust. Weak layers occur on high-altitude wind-protected slopes, can also occur inside the snowdrifts themselves. At low altitudes the fresh snow and drifts lie deposited atop a moistened or encrusted old snowpack surface.

Weather Forecast

Wintery weather conditions, with snowfall and low temperatures. Snowfall will persist during the nocturnal hours and into the morning, thereafter dry weather will follow with only brief snow showers during the daytime, particularly from Arlberg to the Allgau Alps. Clouds and fog will prevail all day long. At 2000m: -10 degrees. Brisk to strong NW winds at high altitudes.

Tendency

Snowdrift accumulations will remain prone to triggering.

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

Regioni coperte