New snow
- Above 2,000 m
Beware fresh snow, drifts: prone to triggering
Low-pressure front conditions. Nighttime snowfall will rapidly taper off, clouds and fog will be persistent all day long. Bright intervals can best be expected in the Central Alps during daytime hours. Temperature at 2000m: -5 degrees; at 3000m: -9 degrees. Moderate-velocity NE winds at high altitudes, shifting in high alpine regions to SW.
On Monday, snow showers will repeatedly pass through starting at midday, often accompanied by strong-velocity westerly winds. Fresh trigger-sensitive snowdrift accumulations will be generated.
Beware fresh snow, drifts: prone to triggering
The fresh snow and drifts can be triggered as medium-sized avalanches even by minimum additional loading. Danger zones occur primarily in steep terrain and in wind-loaded gullies and bowls. In addition, avalanches on shady slopes can fracture down to deeper weak layers and in isolated cases then grow to large size.
By Sunday morning 25-30cm of fresh snow fell. As a result of NW winds, fresh snowdrift accumulations will be generated. They will be deposited often atop a loosely-packed old snowpack surface or atop surface hoar and are prone to triggering. The mid-level part of the snowpack consists widespread of well settled, compact layers which on shady slopes at higher altitudes blanket a poorly structured old fundament.
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)