Wind slab
- Above 2,200 m
- Size
- 2
Stability: poor · Frequency: some
During the course of the night as a consequence of new snow and strong wind there will be an increase in the avalanche danger to level 2 (moderate).
Stability: poor · Frequency: some
Stability: poor · Frequency: some
During the course of the night as a consequence of new snow and strong wind there will be an increase in the avalanche danger to level 2 (moderate).
15 to 30 cm of snow, and even more in some localities, will fall during the night above approximately 1400 m. As a consequence of a moderate to strong southeasterly wind, wind slabs will form during the course of the night above approximately 2200 m. The fresh snow as well as the wind slabs that are forming adjacent to ridgelines and in gullies and bowls will be deposited on the unfavourable surface of an old snowpack in particular on shady slopes. Such avalanche prone locations are to be found between approximately 2200 and 2800 m. The fresh snow and in particular the wind slabs can be released by a single winter sport participant. In the regions neighbouring those that are subject to danger level 3 (considerable) the likelihood of avalanches is higher. Several small and, in isolated cases, medium-sized dry avalanches are possible from the second half of the night.
During the night the wind will be moderate to strong. Sunny slopes: The surface of the snowpack has frozen to form a strong crust. The new snow and wind slabs will be deposited on a crust on steep sunny slopes. In shady places that are protected from the wind: Towards its surface, the snowpack is dry and has a loosely bonded surface. The new snow and wind slabs will be deposited on the unfavourable surface of an old snowpack on steep shady slopes above approximately 2300 m. Snow depths vary greatly above approximately 2200 m, depending on the infuence of the wind. Adjacent to ridgelines and in pass areas and at high altitude a little snow is lying. At low altitude less snow than usual is lying. Below approximately 2200 m no snow is lying on south facing slopes.
The weather conditions will give rise to increasing consolidation of the snowpack.
Bulletin data: Regione Autonoma Valle d'Aosta (via EAWS / avalanche.report)