Bollettino valanghe

Allgäu Alps Central

LWD Bayern
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Pericolo valanghe

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2 · Moderato
Non aggiornato — questo bollettino è scaduto 5 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Circumvent slopes with glide cracks

Problemi valanghivi

  • Gliding snow

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  • Wind slab

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Avalanche Activity

Circumvent slopes with glide cracks

Avalanche danger is moderate. The main problem stems from glide snow. At intermediate altitude, glide snow avalanches can release spontaneously anytime in sparsely wooded forests or on smooth grass-covered slopes that have not yet discharged. Slopes with glide cracks should be avoided. In isolated cases avalanches can grow to large size. As a consequence of solar radiation, it is possible that small loose snow avalanches trigger naturally during the course of the day, in particular in steep rocky terrain that has not yet discharged. At high altitude snowdrift accumulations are now only triggerable by large additional loading. A few avalanche prone locations are found in shady extremely steep terrain as well as in gullies filled with wind-transported snow. Slab avalanches that release are mostly medium-sized.

Snowpack Structure

Following a night with clear skies, the snowpack is mostly covered by a load-bearing crust in the morning. Mild temperatures and solar radiation soften the snowpack surface again on the sunny side. This can go hand in hand with a loss of firmness. At intermediate altitudes the snowpack is wet down to the ground and has strongly receded. At high altitudes, snowdrift accumulations persist that are still prone to triggering. These were deposited atop hard wind or melt-freeze crusts or atop a few centimeters of loose new snow. Close to the ground, faceted crystals partly still persist on shady slopes above 2200 m. Below 1400 m there is hardly any snow on the ground

Tendency

Springtime conditions are increasingly taking hold, i.e., the avalanche danger rises during the course of the day.

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

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