Bollettino valanghe

Bregenzerwald Mountains

LWD Vorarlberg
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Pericolo valanghe

Above 2,000 m
2 · Moderato
Below 2,000 m
1 · Debole
Non aggiornato — questo bollettino è scaduto 3 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Strong winds: trigger-sensitive snowdrifts at high altitudes

Problemi valanghivi

  • Wind slab

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  • Gliding snow

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Tendency

Friday night intensifying precipitation and dropping snowfall level. Over the weekend, intermittent snowfall of moderate intensity. Avalanche danger will rise with these conditions.

Weather Forecast

Nocturnal hours: Until midnight, light cloud or clear skies with good outgoing radiation, then cloud cover will move in. Friday daytime: Strong foehn wind and compact cloudbanks, light snowfall in the afternoon. At 2000 m: -6 to -3 degrees. Strong SW winds.

Avalanche Activity

Strong winds: trigger-sensitive snowdrifts at high altitudes

Avalanche danger above 2000 m is moderate, below that altitude danger is low. Due to strong-to-stormy winds, fresh trigger-sensitive snowdrift accumulations are being generated. Danger zones occur in ridgeline terrain and in wind-loaded gullies and bowls. Frequency and size of these zones increase with ascending altitude. Small-to-mediuim sized avalanches can be triggered by one person. The risks of falling need consideration, esp. on hard, icy steep slopes, despite being blanketed by fresh snow. A cautious route selection is advised. Danger of glide-snow avalanches: on steep smooth slopes in all aspects below 2200 m, small-to-medium releases are possible, difficult to assess, possible at any time of day. Circumvent glide cracks.

Snowpack Structure

The current situation is characterized by highly variable snowpack surfaces: wind-compressed and icy, but also powder. Crests and ridges are utterly windblown or have a hardened crust. Old and fresh snowdrift accumulations often lie deposited on a loose snowpack and are prone to triggering. The old snowpack is stable by and large. The warm and moist ground is making the snowpack glide downhill, although this activity has receded.

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

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