The snow sport conditions outside marked and open pistes are critical.
In particular on west, north and east facing slopes more frequent medium-sized and, in isolated cases, large natural avalanches are possible during the first half of the night. In the regions exposed to heavier precipitation this applies especially. Avalanches can in many places be released in the old snowpack.
The danger exists in particular in alpine snow sports terrain. Natural avalanches and whumpfing sounds are a clear indication of a weakly bonded snowpack. Remotely triggered avalanches are probable. The avalanche prone locations are prevalent and are barely recognisable.
Snowpack
dp.1: deep persistent weak layer dp.8: surface hoar blanketed with snow
10 to 25 cm of snow has fallen since Tuesday. 20 to 40 cm of snow, and even more in some localities, will fall. The new snow will be deposited on a weakly bonded old snowpack. Distinct weak layers exist in the old snowpack.
Tendency
The avalanche conditions remain precarious.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wind slab
Treeline
A treacherous avalanche situation will prevail. Wind slabs and weakly bonded old snow require caution.
Distinct weak layers in the lower part of the snowpack can be released easily by individual winter sport participants. In addition the fresh wind slabs are very easily triggered. Avalanches can release the weakly bonded old snow as well and reach medium size. Caution is to be exercised in particular on steep west, north and east facing slopes above the tree line.
Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack and natural avalanches serve as an alarm indicating the danger. The avalanche prone locations are sometimes covered with new snow and are therefore difficult to recognise. Remotely triggered avalanches are possible. Caution and restraint are recommended.
Snowpack
dp.1: deep persistent weak layer dp.8: surface hoar blanketed with snow
Up to 15 cm of snow, and even more in some localities, will fall. The new snow and wind slabs will be deposited on the unfavourable surface of an old snowpack. Distinct weak layers exist in the old snowpack. This applies especially on west, north and east facing slopes.
Tendency
The avalanche conditions remain treacherous.
Danger level
treeline
Avalanche Problem
Wind slab
Treeline
Fresh wind slabs require caution.
The fresh wind slabs can be released easily in some cases. This applies especially on steep shady slopes, as well as adjacent to ridgelines and in gullies and bowls above the tree line. In isolated cases avalanches are medium-sized. The avalanche prone locations are sometimes covered with new snow and are therefore difficult to recognise.
Apart from the danger of being buried, restraint should be exercised in particular in view of the danger of avalanches sweeping people along and giving rise to falls.
Snowpack
dp.6: cold, loose snow and wind
The fresh wind slabs will be deposited on the unfavourable surface of an old snowpack at elevated altitudes. The old snowpack consists of faceted crystals.
The snowpack will be generally subject to considerable local variations.
Tendency
Moderate avalanche danger will prevail. Fresh wind slabs require caution.
