Persistent weak layers
- Above 2,000 m
- Size
- 1
Stability: poor · Frequency: few
Weakly bonded old snow requires caution.
Stability: poor · Frequency: few
Weakly bonded old snow requires caution.
Shady slopes: Avalanches can in very isolated cases be released by a single winter sport participant. The avalanche prone locations are to be found in particular on little used slopes above approximately 2000 m and in gullies and bowls, and behind abrupt changes in the terrain. Mostly avalanches are small. Sunny slopes: 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.
The new snow and wind slabs of the last few days are lying on the unfavourable surface of an old snowpack in particular on very steep shady slopes at elevated altitudes. Isolated avalanche prone weak layers exist in the old snowpack especially on little used shady slopes. Sunny slopes: The snowpack will be in most cases well bonded. As a consequence of low temperatures and low relative humidity a crust will form on the surface during the course of the night. The solar radiation will give rise as the day progresses to increasing moistening of the snowpack on steep sunny slopes. Below the tree line only a little snow is now lying.
The weather conditions will facilitate a stabilisation of the snowpack.
Bulletin data: Avalanche Warning Service South Tyrol, avalanche.report (CC BY 4.0)