Persistent weak layers
- Above 2,200 m
- Size
- 2
Stability: poor · Frequency: some
Weakly bonded old snow requires caution. Fresh wind slabs at elevated altitudes.
Stability: poor · Frequency: some
Stability: poor · Frequency: some
Weakly bonded old snow requires caution. Fresh wind slabs at elevated altitudes.
Weak layers in the old snowpack can be released in some places by individual winter sport participants. Avalanches can reach medium size. The avalanche prone locations are to be found in particular on very steep shady slopes above approximately 2200 m. They are barely recognisable, even to the trained eye. Backcountry touring and other off-piste activities call for a certain restraint. Fresh wind slabs can be released by a single winter sport participant in particular on steep shady slopes above approximately 2400 m. The avalanche prone locations are to be found especially adjacent to ridgelines and in pass areas. The number and size of avalanche prone locations will increase with altitude. The avalanche prone locations are clearly recognisable to the trained eye. On steep grassy slopes individual small to medium-sized gliding avalanches are possible, especially in the regions exposed to heavier precipitation. As a consequence of warming during the day and the solar radiation, the likelihood of moist loose snow slides being released will increase a little on extremely steep sunny slopes.
The weather conditions will facilitate a slow strengthening of the snowpack. Shady slopes: Avalanche prone weak layers exist in the centre of the snowpack in particular on little used shady slopes. The fresh wind slabs of Monday are lying on soft layers especially on shady slopes at elevated altitudes. Sunny slopes: The solar radiation will give rise as the day progresses to moistening of the snowpack on steep sunny slopes.
Weak layers in the old snowpack represent the main danger. Wind slabs at high altitude.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)