Wind slab
- Above treeline
- Size
- 1
Stability: very poor · Frequency: some
Fresh wind slabs represent the main danger. Weakly bonded old snow and wet snow are to be assessed with care and prudence.
Stability: very poor · Frequency: some
Stability: fair · Frequency: some
Stability: very poor · Frequency: some
Fresh wind slabs represent the main danger. Weakly bonded old snow and wet snow are to be assessed with care and prudence.
As a consequence of new snow and a moderate to strong wind, avalanche prone wind slabs formed on west, north and east facing slopes. Avalanches can be released by a single winter sport participant. The avalanche prone locations are to be found in particular adjacent to ridgelines and in gullies and bowls. The avalanches are only small. Weak layers in the old snowpack can be released over a wide area by people in particular on very steep shady slopes. The avalanche prone locations are to be found in particular adjacent to ridgelines and in gullies and bowls in northwest to north to east facing aspects above approximately 2300 m and at transitions from a shallow to a deep snowpack. In many cases the avalanches in these regions are medium-sized. From the early morning as a consequence of warming during the day and solar radiation there will be a gradual increase in the danger of moist avalanches. Small natural avalanches are to be expected in these regions.
In some localities up to 10 cm of snow has fallen above approximately 1800 m. The southerly wind will transport the new snow and, in some cases, old snow as well. In particular shady slopes intermediate and high altitudes: Wind slabs are lying on old snow containing large grains. The solar radiation will give rise from early morning to significant moistening of the snowpack on sunny slopes. Careful route selection is important.
Gradual decrease in danger of dry avalanches as a consequence of the ceasing of precipitation.
Bulletin data: Lauegi, Conselh Generau d'Aran (CC BY 4.0)