Bulletin d’avalanche

Wölz Tauern South

LWD Steiermark
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Danger d’avalanche

Above treeline
3 · Marqué
Below treeline
2 · Modéré
Périmé — ce bulletin a expiré 5 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Snowdrifts accumulations being deposited in all aspects

Problèmes avalancheux

  • Wind slab

    • Toutes altitudes
  • Gliding snow

    • Toutes altitudes

Avalanche Activity

Snowdrifts accumulations being deposited in all aspects

In the Northern Alps, Niedere Tauern, Gurktal and Seetal Alps, moderate avalanche danger prevails below the treeline, considerable danger above the treeline. Avalanche prone locations are found in nearly all aspects. Critical zones are distant from ridgelines, behind protruberances in the landscape. Minimum additional loading is sufficient to trigger a slab avalanche. At intermediate altitudes on extremely steep grass-covered slopes, isolated glide-snow slides are possible.

Snowpack Structure

The most recent round of cold snowfall on Thursday (10-30 cm) was transported on Friday by strong SW winds, deposited drifts on N/E slopes. As winds shift back to NW again starting tonight, new snowdrift accumulations will ge generated on Saturday, deposited on east-facing and south-facing slopes. Due to repeatedly shifting wind directions in recent days the layers of the snowpack have attained highly differing degrees of hardness. Particularly the softer layers which were generated in warm phases can now act as potential weak layers. The snowpack has not been able to settle, due to the low temperatures, thus the unfavourable layering persists.

Weather Synopsis

The Eastern Alps lie in the range of influence of a NW air current. This will bring moist and slightly instable cold air masses to the northern flank of the Alps. On Saturday, heavy cloud will lodge against the northern flank of the Tauern, the higher peaks will be veiled in fog. Amid brisk to strong NW winds, repeated bouts of snowfall are possible. The southern flank of the Alps, on the other hand, are favoured as leeward slopes. It will remain free of precipitation, with sunshine and cloudy phases alternating. Also here: strong NW winds. Temperatures in the northern massifs will be -9 degrees at 2000 m; -5 degrees at 1500 m; -7 to -4 degrees in the southern regions. Also on Sunday, the NW weather will continue. In the northern barrier cloud regions, heavy cloud will dominate, only intermittent sunshine make itself felt. South of the Tauern and near the Styrian rimline ranges it will be quite sunny. But it will remain cold everywhere, and the NW winds will intensify somewhat.

Tendency

No change in the current avalanche situation.

Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)

Régions couvertes