Persistent weak layers
- Above 2,000 m
- Size
- 1
Stability: poor · Frequency: few
Weakly bonded old snow and wet snow require caution.
Stability: poor · Frequency: few
Stability: very poor · Frequency: some
Weakly bonded old snow and wet snow require 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 wet loose snow avalanches being released will increase a little. On extremely steep sunny slopes mostly small natural avalanches are possible from the middle of the day.
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 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.
Weakly bonded old snow and wet snow require caution. The surface of the snowpack will cool hardly at all during the overcast night and will soften earlier than the day before.
Bulletin data: Avalanche Warning Service South Tyrol, avalanche.report (CC BY 4.0)