Wind slab
- Todas las altitudes
Northerly winds: freshly generated snowdrifts
Northerly winds: freshly generated snowdrifts
Avalanche danger is low. Above the treeline, avalanche danger is moderate. Isolated avalanche prone locations are found behind abrupt changes in the landscape in east-facing and south-facing aspects. Ridgeline zones require special caution. A slab avalanche triggering cannot be ruled out.
At high altitudes the snowdrifts have been deposited on a layer of surface hoar. At intermediate altitudes the snowpack was able to stabilize. Surface hoar has formed on the snowpack surface, i.e. another potential weak layer. For Thursday about 20 cm of fresh snow is forecast. Bonding of the generated snowdrifts to the old snowpack will be inadequate. Overall snow depths are shallower than in the western regions of Austria.
On Wednesday night, snowfall will set in, which will persist during the day on Thursday. Winds will shift from southerly to northwesterly, then intensify to reach storm-strength. In the mountains it will become significantly colder, midday temperatures at 1500 m will lie at -6 °C, at 2000m at -8 degrees. On Friday, winds will temporarily shift to southwesterly. In the Northern Alps foehn wind will be blowing. In the morning hours sunshine is expected, in the afternoon cloud banks will move in from the west.
Slightly rising avalanche danger.
Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)