Wind slab
- Above treeline
Low avalanche danger, fresh avalanche prone locations due to wind slab.
Low avalanche danger, fresh avalanche prone locations due to wind slab.
The avalanche danger is generally low. With new fallen snow and sometimes stormy north-westerly winds, fresh snowdrift accumulations are occasionally formed adjacent to the crest, which can be triggered as small ridgelines, crests or summits with little additional load. This is particularly the case behind broad ridges and crests as well as in gullies and bowls.
Under the influence of strong winds, up to 10 cm of new snow falls on a crusted old snowpack. In many places, a built-up transformed surface or surface hoar is covered. The connection between the drifting snow layer and the persistent weak layer is poor. At lower altitudes, the snow often falls on apery ground.
The coming night will initially be clear and free of disturbances. After midnight, the first cloud fields will move in from the north and a cold front with cold polar air will reach the forecast area in the morning hours. Clouds and fog will bring snow showers to the north of the Alps by midday, but only a few more snowflakes will make it over the Tauern. In the afternoon, the sun will come out more frequently on the southern side of the Alps and in the Styrian-Lower Austrian Limestone Alps. The temperature at an altitude of 2000 metres will be between -13 and -10 degrees, at an altitude of 1500 metres between -8 and -6 degrees. There will be strong winds with gusts of around 70 km/h from the north-west. The snowfall level will be in the valleys. Amounts of new snow of up to 10 cm are expected. There will be hardly any precipitation south of the Mur-Mürzfurche.
It will remain windy and cold on New Year's Eve. The wind slab problem remains predominant!
Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)