Persistent weak layers
- Above treeline
- Dimensione
- 3
Stability: very poor · Frequency: many
Even single freeriders can release avalanches very easily.
Stability: very poor · Frequency: many
Stability: very poor · Frequency: some
Stability: very poor · Frequency: some
A very dangerous avalanche situation will prevail. The danger exists in particular in alpine snow sports terrain.
The new snow and wind slabs of the last few days are lying on top of a weakly bonded old snowpack. The fresh snow of Saturday and the wind slabs formed by the strong to storm force westerly wind remain very prone to triggering in all aspects above the tree line. 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. More natural avalanches are possible. Avalanches can in some cases penetrate deep layers and reach large size. This applies on west, north and east facing slopes. In addition individual wet and gliding avalanches are possible. This applies especially on cut and grassy slopes below approximately 1800 m. The conditions are very dangerous for backcountry touring and other off-piste activities outside marked and open pistes.
20 to 30 cm of snow, and up to 40 cm in some localities, fell on Saturday. The wind will be strong in some cases. The wind will transport the new snow. Further wind slabs will form. Up to intermediate altitudes rain has fallen. The snowpack will be prone to triggering over a wide area. The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Somewhat older wind slabs are lying on surface hoar. Distinct weak layers exist in the bottom section of the old snowpack. This applies in particular on west, north and east facing slopes above the tree line.
The snow sport conditions outside marked and open pistes remain dangerous. Avalanches can be released very easily.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)