Persistent weak layers
- Above treeline
- Size
- 3
Stability: very poor · Frequency: many
More natural avalanches are possible.
Stability: very poor · Frequency: many
Stability: very poor · Frequency: some
Stability: very poor · Frequency: few
A very dangerous avalanche situation will persist.
Large quantities of fresh snow and the wind-drifted snow of the last few days are lying on top of a weakly bonded old snowpack. The fresh snow and the wind slabs formed by the strong to storm force westerly wind are very prone to triggering in all aspects. Winter sport participants can release avalanches very easily. The avalanche prone locations are numerous. They are to be found in all altitude zones, especially in areas close to the tree line, as well as above the tree line. As a consequence of the heavy snowfall more natural avalanches are possible. These can in some cases penetrate deep layers and reach large size, in particular on west, north and east facing slopes above the tree line. Caution is to be exercised in particular in leeward starting zones that have retained the snow thus far. In the typical avalanche paths here avalanches can in very isolated cases reach very large size. Exposed transportation routes can be endangered. In addition individual wet and gliding avalanches are possible. This applies especially on cut and grassy slopes below approximately 1800 m.
20 to 30 cm of snow, and up to 40 cm in some localities, fell on Saturday. Up to intermediate altitudes rain has fallen. The wind will be strong to storm force in some cases. The snowpack will be prone to triggering. Large quantities of fresh snow and the wind-drifted snow are bonding only slowly with the old snowpack. The various wind slabs have bonded insufficiently with each other and the old snowpack. Avalanche prone weak layers exist in the bottom section of the snowpack on west, north and east facing slopes. The rain gave rise to softening of the snowpack at low and intermediate altitudes.
The snow sport conditions outside marked and open pistes remain very dangerous. Avalanches can be released very easily.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)