Persistent weak layers
- Above 2,200 m
Caution urged in steep shady terrain seldom skied on and towards fresh snowdrifts
Caution urged in steep shady terrain seldom skied on and towards fresh snowdrifts
In some places avalanches can be triggered by one sole skier, generate small-to-medium sized releases, mostly above 2200m in transitions from shallow to deeper snow, e.g. at entry points into gullies and bowls. Danger zones tend to increase in frequency with ascending altitude. Activities in backcountry demand cautious route selection, particularly in shady steep terrain seldom skied on. Freshly generated snowdrift accumjlations are prone to triggering, require attentiveness in steep terrain. In isolated cases small glide-snow avalanches are still possible. Caution urged below glide cracks.
The snowpack was able to consolidate up to high altitudes. Particularly on shady slopes there are weak layers evident which can easily be triggered. Snowpack surfaces are often powdery on shady, wind-protected slopes. Elsewhere there are wind crusts and a melt-freeze crust evident. As a result of strong to storm-velocity S/SW winds, small snowdrift accumulations are being generated afresh. During the course of the day, the superficially encrusted snowpack will moisten on steep sunny slopes.
Nocturnal skies will be slightly cloudy and dry. On Saturday, sunshine and often dense high altitude clouds will alternate, diffuse light conditions will frequently prevail. At 2000m: -5 to 0 degrees. Brisk to strong winds, on foehn mountains storm-strength S/SW winds.
Avalanche danger levels not expected to change significantly
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)