Wind slab
- Above 2,200 m
Fresh wind slabs require caution. Loose snow avalanches on extremely steep slopes.
Fresh wind slabs require caution. Loose snow avalanches on extremely steep slopes.
The fresh wind slabs can be released by a single winter sport participant in some cases. They are to be evaluated with care and prudence in particular on west to north to east facing aspects above approximately 2200 m. At elevated altitudes the likelihood of avalanches being released is greater. Additionally in isolated cases dry avalanches can also penetrate deep layers. Avalanches can reach medium size. On extremely steep slopes moist loose snow slides are to be expected.
5 to 10 cm of snow, and even more in some localities, fell on Friday. As a consequence of the occasionally strong northwesterly wind, fresh snow drift accumulations will form on Saturday. These are prone to triggering in particular on west to north to east facing aspects above approximately 2200 m. At elevated altitudes the snowpack is weaker. Faceted weak layers exist in the old snowpack, especially on steep shady slopes above approximately 2400 m. Outgoing longwave radiation during the night will be reduced in some case. The surface of the snowpack will only just freeze. The solar radiation will give rise as the day progresses to increasing moistening of the snowpack below approximately 2200 m. The snowpack will be generally subject to considerable local variations.
On Sunday the wind will be moderate to strong. The wind slabs remain prone to triggering at elevated altitudes. On sunny slopes the snowpack will soften during the day.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)