Persistent weak layers
- All elevations
Generally low avalanche danger
Generally low avalanche danger
Avalanche danger is low in general, isolated snowdrift patches in the cavities are not well bonded with the snowpack beneath them. In these avalanche prone locations, isolated slab avalanches can be triggered. In shady terrain above the treeline there is a persistent weak layer, slab avalanches cannot be ruled out. Caution urged towards the perils of falling on the icy surfaces.
At high altitudes the surface is hardened and icy or wind-pressed, beneath that the fundament is compact and without avalanche-relevant weak layers. However, the process of expansive metamorphosis is continuing above 1500 m, the snowpack evidences increasingly frequently faceted crystals, is forfeiting its firmness and losing its base. At low altitudes the snowpack is moist-to-wet and the surface thinly encrusted at most.
The Eastern Alps are in the grips of a westerly, relatively mild high-altitude air current. Perturbances from the northeast and from the Mediterranean will bring instable conditions. On Boxing Day the higher summits will disappear in heavy cloud intermittently, some precipitation is expected. The snowfall level in the eastern massifs will descend to valley floors. Temperatures at midday in western regions: at 2000 m -1 degree, at 1500 m +2 degrees; in eastern regions -2 and -2 degrees. Winds will be light-to-moderate from the southwest at high altitudes, from east-to-southeast at lower altitudes. On Monday the clouds will disperse from the west and it will turn increasingly sunny. Light winds. Temperatures will remain unchanged.
Avalanche danger is expected to remain low.
Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)