Persistent weak layers
- Above 1,800 m
Isolated avalanche prone locations in steep shady terrain
Isolated avalanche prone locations in steep shady terrain
A single winter sports enthusiast can trigger small slab avalanches in some places, particularly in ridgeline terrain and in wind-loaded gullies and bowls. If releases then sweep away deeper weak layers of the snowpack, the avalanche can in isolated cases grow to medium size. Danger zones are impossible to spot. Whumpf noises and fractures forming on the surface are alarm signals. Due to higher daytime temperatures and solar radiation, isolated loose-snow avalanches can be expected in very steep terrain.
Particularly on steep shady slopes, the often unfavorable base and intermediate layers of the old snowpack have persisted. On sunny slopes and in general at lower altitudes the snowpack surface is often melt-freeze encrusted. The snowpack on steep south-facing slopes is often capable of bearing loads.
Summits will be shrouded in clouds as of midday, light snowfall is anticipated in places. During the course of the day, W/SW winds will intensify. Temperature at 2000m: -6 to -1 degree; at 3000m: -11 to -7 degrees. Moderate-to-brisk W/SW winds at high altitudes.
As a result of some fresh snowfall and wind, avalanche danger could increase somewhat.
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)