Wind slab
- Above 1,200 m
Drift snow packs can easily be triggered!
In the night to Wednesday, the snowfall on the northern side of the Alps will decrease significantly or almost completely. At first, the mountains will be mostly shrouded in cloud and there will be snow showers to the west. It will only soften up a little at times. The high-altitude wind will blow briskly to strongly from the north to the east. Temperatures at 1500 m will rise from -1 to +4 °C during the day changes.
Since Monday evening, up to 20 cm of new fallen snow has fallen in combination with gale-force winds in some places. This covers the snowfall of the past week, which was also heavily influenced by the wind and relocated accordingly. Weak layers in the wind slab can be triggered with little additional load.
Drift snow packs can easily be triggered!
The fresh wind slab is prone to triggering in places and can be triggered by even a small additional load. Avalanche prone locations are mainly found in gullies, bowls and behind terrain edges down to forest aisles. Slab avalanches can reach medium size.
The wind slab problem is diminishing. Clouds will continue to accumulate from the north on Thursday, with short snow showers still possible.
Bulletin data: Avalanche Warning Service Lower Austria (CC BY 4.0)