Persistent weak layers
- Above 2,400 m
- Größe
- 3
Stability: poor · Frequency: some
Weakly bonded old snow represents the main danger. Fresh wind slabs require caution.
Stability: poor · Frequency: some
Stability: poor · Frequency: some
Stability: very poor · Frequency: some
Weakly bonded old snow represents the main danger. Fresh wind slabs require caution.
Avalanches can be triggered in the old snowpack and reach large size in isolated cases in particular on very steep west, north and east facing slopes. Such avalanche prone locations are to be found above approximately 2400 m. Above the tree line the wind slabs will increase in size additionally. Even single winter sport participants can release avalanches in some places, including medium-sized ones, especially on steep shady slopes. The number and size of avalanche prone locations will increase with altitude. In the regions of the north exposed to the foehn wind such avalanche prone locations are more prevalent. On steep grassy slopes medium-sized gliding avalanches are possible, especially on sunny slopes below approximately 2400 m.
Up to 10 cm of snow fell on Sunday. In the southwest 5 to 15 cm of snow will fall on Monday. The southerly wind will transport the new snow. In some cases new snow and wind slabs are lying on a weakly bonded old snowpack, in particular on steep west, north and east facing slopes above approximately 2400 m. Fresh wind slabs are lying on soft layers especially on shady slopes. The wind slabs are covered with new snow in some cases and therefore difficult to recognise. In the regions exposed to snowfall this applies in particular in the south.
The conditions will prevent a rapid stabilisation of the snowpack. In addition further gliding avalanches are to be expected.
Bulletin data: Avalanche Warning Service South Tyrol, avalanche.report (CC BY 4.0)