Wind slab
- All elevations
Below 2200m wet-snow avalanches - Above 2000m heed drifts
Nocturnal hours: skies heavily overcast, intermittent showers are possible. The snowfall level will descend from 1600 down to 1200 m. Saturday: instable conditions, intermittent snowfall, rainfall below 1300m. Only rare bright intervals. At 2000 m: -2 degrees. Moderate to strong W/NW winds, slackening off in the afternoon.
Below 2200m wet-snow avalanches - Above 2000m heed drifts
Above 1500m avalanche danger is moderate. The snowpack below 2200m is thoroughly wet, so small-to-medium wet-snow avalanches can trigger naturally on very steep slopes in all aspects. On steep grassy slopes small-to-medium glide-snow avalanches are porrible. At high altitudes, fresh snow and drifts are trigger-sensitive in places. Such danger zones occur in steep ridgeline terrain and in wind-loaded gullies and bowls. One sole person can trigger a small-to-medium sized avalanche.
Due to mild temperatures and rainfall, the snowpack was further moistened on Thursday, even some dust from the Sahara Desert was in the air. On Friday, rainfall up to 2000 m, later up to 1800.. Below 1500m there is very little snow on the ground. Strong to stormy S/SW winds transported the fresh snow. Fresh and older snowdrifts increase in size and frequency with ascending altitude. Inside the recent fresh snow and drifts there are weak layers and graupel. Bonding is generally good. At low altitudes the fresh snow was often deposited on bare ground.
Sunday will be gloomy and wet. Snowfall level at 1200m, descending later in the day to just under 1000 m. Avalanche danger levels are not expected to change significantly at high altitude. Danger of wet-snow avalanches will recede as temperatures drop.
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)