Bollettino valanghe

Pre Alps

LWD Vorarlberg
Vedi sulla mappa

Pericolo valanghe

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

In sintesi

Fresh snowdrifts are prone to triggering

Problemi valanghivi

  • Wind slab

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  • New snow

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Snowpack Structure

Amid further snowfall and strong W/NW winds, trigger-sensitive snowdrift accumulations are still being generated. Exposed crests and ridges are often windblown and bare of snow. Esp. at intermediate altitudes there is often surface hoar. On south-facing slopes at high altitudes, often a melt-freeze crust and on north-facing slopes in leeward terrain, often soft layers or surface hoar. Bonding of the fresh snow to the old snowpack is often poor.

Weather Synopsis

Friday: conditions will be pleasant. High-altitude clouds will make some sunshine possible in the morning. In the afternoon, clouds will thicken, the light become diffuse. It will remain partly cloudy in the Bregenzerwald mountains and Prealps. In ridgeline zones and pass areas, stormy-strength winds. At 2000 m: -7 to -3 degrees. Strong to stormy NW winds.

Tendency

On Friday night, rainfall/snowfall will set in. The fresh snow will be transported far-reachingly at high altitudes. The snowpack remains prone to triggering, avalanche danger levels may rise further.

Avalanche Activity

Fresh snowdrifts are prone to triggering

Fresh snow and freshly generated snowdrift accumulations are prone to triggering. Exposed ridges and crests are often windblown and bare of snow. Esp. intermediate altitudes evidence surface hoar. One person can trigger small-to-medium avalanches in gullies and bowls and behind abrupt discontinuities in the terrain. In extremely steep and rocky terrain, small to medium sized loose-snow avalanches are possible.

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

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