Bulletin d’avalanche

Hochschwab Mountains

LWD Steiermark
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Danger d’avalanche

All elevations· Matin
1 · Faible
All elevations· Après-midi
2 · Modéré
Périmé — ce bulletin a expiré 3 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Persistent-weak-layer problem on E/N facing slopes. Mild nocturnal temperatures.

Problèmes avalancheux

  • Persistent weak layers

    • Toutes altitudes
  • Wet snow

    • Toutes altitudes
  • Persistent weak layers

    • Toutes altitudes

Avalanche Activity

Persistent-weak-layer problem on E/N facing slopes. Mild nocturnal temperatures.

Avalanche danger is subject to a daytime cycle, in the morning low, in the afternoon moderate. Above 2000 m older drifts can be triggered by large additional loading. The few danger zones occur at summit level behind discontinuities and on leeward slopes (also distant from ridges). In addition, isolated gliding snow activity and glide-snow avalanches can’t be excluded. Due to higher temperatures and solar radiation, naturally triggered loose-snow avalanches are possible on extremely steep rough and rocky slopes, esp. south-facing slopes.

Snowpack Structure

Where the snowpack is moist-to-wet, a thin melt-freeze crust forms at night, then swiftly forfeits its firmness during the daytime hours. Old drifts lie deposited atop a hard layer at high altitudes or atop faceted crystals. The fundament is stable. Leeward slopes are currently without snow. Where the snowpack surface is hard and icy, the situation will persist.

Weather Forecast

Perfect mountain weather on Tuesday. Sunny and mild. Light SW winds. At 2000 m: +4 to +7 degrees.

Tendency

The airstream will shift to northwesterly, cooler air masses will gradually move in. Heavy clouds will repeatedly appear, sunshine not be unhampered. Cooler. Avalanche danger levels are not expected to change significantly.

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

Régions couvertes