Persistent weak layers
- Above 2,400 m
Isolated glide-snow avalanches. Isolated danger zones in persistent weak layers
Isolated glide-snow avalanches. Isolated danger zones in persistent weak layers
Avalanches can be triggered in the persistent weak layer in isolated cases above about 2400m on very steep shady slopes. These releases usually are small-sized. The risks of injuries from being forced to take a fall outweigh those of being buried in snow masses. As a result of daytime warming and solar radiation, isolated, generally small-sized glide-snow avalanches are still possible on steep slopes which have not yet discharged. Glide cracks are signals of possibly imminent danger.
During a night of star-studded skies, a breakable-to-capable of bearing loads crust can be generated. During the course of the day, it softens up particularly on sunny slopes and at lower altitudes. South-facing slopes are becoming bare of snow up to high altitudes. On shady high-altitude slopes above 2400m, isolated weak layers occur inside the snowpack.
On Saturday, brilliantly sunny mountain weather is anticipated right from the start. Mild temperatures are expected in the mountains, the zero-degree level at 2700m. Temperatures at 2000m: up to +4 degrees; at 3000m: -2 degrees. High-altitude winds: westerly to southesterly, blowing at light strength
Little change expected
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)