Avalanche.report

Tuesday 31 December 2024

Published 30 Dec 2024, 17:00:00


Danger level


Avalanche Problem
Gliding snow


Predominantly stable conditions.

Avalanche danger is low. Gliding snow is the main problem. Isolated small glide-snow avalanches can trigger naturally on steep grassy slopes where there is sufficient snow on the ground.

Snowpack

The snowpack is largely stable. Snow on the shady side is still dry. At intermediate altitudes, isolated weak layers persist underneath a melt-freeze crust, prone to triggering. The snowpack is shallow. On the sunny side the ground is becoming increasingly bare. The snowpack base is wet. Gliding movements over smooth grass-covered slopes cannot be excluded.

Tendency


Danger level

2200m
Avalanche Problem
Persistent weak layer
2200m


Avalanche danger zones mainly in north aspects and ridgeline terrain

Avalanche danger above 2200m is moderate, below that altitude danger is low. Weak layers in the old snowpack are the main problem. Slab avalanches can trigger especially by large additional loading and in transition from shall to deep snow. Avalanche prone locations mainly occur in highest altitudes in steep shady terrain close to ridges, where medium-sized avalanches cannot be ruled out. Isolated smaller glide-snow avalanches can trigger naturally on steep grassy slopes and rock plates where there is sufficient snow on the ground.

Snowpack

Snow on the shady side is still dry. A layer consisting of faceted (expansively metamorphosed) crystals formed, where there are wind crusts in high altitude terrain on the shady side. At high altitudes, there are isolated layers of faceted crystals also underneath older snowdrift masses. At low altitudes the snowpack is shallow, moist down to the ground. Gliding movements over smooth grass-covered slopes are possible. As wind intensifies by mid-week, small-scale snowdrifts can accumulate that are prone to triggering.

Tendency

As wind intensifies by mid-week, small-scale snowdrifts can accumulate that are prone to triggering.


Danger level

1800m
Avalanche Problem
Persistent weak layer
1800m
Gliding snow


Persistent weak layer in old snow at higher altitudes. In addition: Avoid zones below glide cracks.

Avalanche danger above 1800 m is moderate, below that altitude danger is low. Weak layers in the old snowpack are the main problem. Slab avalanches can trigger especially by large additional loading and in transition from shall to deep snow. Danger zones occur in steep ridgeline terrain, in particular in shady aspects, near ridgelines, in steep high altitude terrain and in shallow snow. Avalanches can grow to medium size. In addition, glide-snow avalanches can release spontaneously at any time of day or night. This relates in primarily to steep grass-covered slopes, forest aisles, and rock slabs on the sunny side; but increasingly also to the shady side. At high altitudes they can reach medium size.

Snowpack

On the shady side the snow is still dry, close to ridges superficially impacted by wind. In places, a trigger-sensitive weak layers persists in the snowpack underneath a melt-freeze crust On ridges there are also isolated weak layers consisting of faceted crystals under older accumulated snowdrift masses. At low altitudes the snowpack is shallow, moist down to the ground. Gliding movements over smooth grass-covered slopes cannot be excluded, especially at high altitudes where there is more snow.

Tendency

As wind intensifies by mid-week, small-scale snowdrifts can accumulate that are prone to triggering.