Persistent weak layers
- Above treeline
- Dimensione
- 2
Stability: very poor · Frequency: some
The snow sport conditions outside marked and open pistes are to some extent unfavourable.
Stability: very poor · Frequency: some
Stability: poor · Frequency: some
Stability: very poor · Frequency: few
The snow sport conditions outside marked and open pistes are to some extent unfavourable.
Single winter sport participants can release avalanches easily, including medium-sized ones. Avalanche prone locations for dry avalanches are to be found in particular on steep west, north and east facing slopes above the tree line, also on steep shady slopes in areas close to the tree line. The avalanche prone locations are covered with new snow and are therefore barely recognisable, even to the trained eye. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack and fresh avalanches serve as an alarm indicating the danger. Remotely triggered avalanches are possible. In addition small and, in isolated cases, medium-sized gliding avalanches are possible. An increasing number of small and, in isolated cases, medium-sized loose snow avalanches are possible as a consequence of solar radiation. Extensive experience in the assessment of avalanche danger and great restraint are important.
Over a wide area 20 to 30 cm of snow, and even more in some localities, has fallen. As a consequence of a strong to storm force wind from southwesterly directions, deep wind slabs formed. The deep wind slabs are lying on top of a weakly bonded old snowpack in particular on west to north to east facing aspects. They are covered with new snow and therefore barely recognisable. They are lying on soft layers on shady slopes. The old snowpack will be moist at low and intermediate altitudes. Above the tree line snow depths vary greatly, depending on the infuence of the wind.
The snow sport conditions outside marked and open pistes remain to some extent unfavourable.
Bulletin data: Avalanche Warning Service South Tyrol, avalanche.report (CC BY 4.0)