Wind slab
- Toutes altitudes
Fresh snowdrifts at high altitudes. Wet-snow avalanches due to warmth.
Fresh snow expected on Thursday. Thus, avalanche danger levels can increase.
Fresh snowdrifts at high altitudes. Wet-snow avalanches due to warmth.
Fresh snowdrifts are trigger-prone at high altitudes and are easily triggered. Size and frequency of danger zones increase with ascending altitude. Danger zones occur in steep ridgeline terrain, behind discontinuities and in wind-loaded gullies and bowls. Small-to-medium sized avalanches can be triggered by one person. Backcountry sports require much experience in assessing avalanche dangers on-site and prudent route selection; mind the risks of falling. Small loose-snow avalanches are possible in steep rocky terrain due to solar radiation. Despite lower temperatures, glide-snow avalanches are still a threat on steep grass-covered and rocky slopes in all aspects, avoid zones below glide cracks.
Strong to stormy winds will transport the loose snow, generating trigger-prone snowdrift accumlations. Older drifts are bonding better with the surface, but with increasing altitude are still prone to triggering, esp on high-altitude shady slopes, inadequate bonding. The old snowpack below them is generally well consolidated and stable. In zones with rain impact, however, the snowpack is being weakened. The warm ground and wet lower layers are reinforcing the gliding movement of the entire snowpack.
Nocturnal hours: Light rainfall is expected. Wednesday daytime: Heavily overcast skies with some extended sun windows in the Central Alps. In afternoon, cloud cover will move in, light precipitation will set in above 1800 m. At 2000 m: +3 degrees. Strong to stormy W/NW winds with gale-strength gusts.
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)