Persistent weak layers
- Above 2,000 m
- Dimensione
- 2
Stability: poor · Frequency: many
Wind slabs and weakly bonded old snow represent the main danger.
Stability: poor · Frequency: many
Wind slabs and weakly bonded old snow represent the main danger.
The fresh snow as well as the wind slabs can be released by a single winter sport participant in particular on west, north and east facing slopes above approximately 2000 m. Especially here avalanches can be triggered in the faceted old snow and reach medium size. Caution is to be exercised in particular in gullies and bowls, and behind abrupt changes in the terrain, as well as in places that are protected from the wind. The avalanche prone locations are covered with new snow and are barely recognisable. The number and size of avalanche prone locations will increase with altitude. Afternoon: Isolated loose snow avalanches are possible as a consequence of solar radiation, in particular on very steep sunny slopes.
Up to 30 cm of snow, and even more in some localities, has fallen since Saturday. As a consequence of a strong wind from southerly directions, soft wind slabs formed. These are lying on top of a weakly bonded old snowpack above approximately 2000 m. The old snowpack is faceted and weak. This applies especially in shady places that are protected from the wind. The old snowpack will be subject to considerable local variations.
The new snow and wind slabs remain prone to triggering.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)