Bulletin d’avalanche

Semmering - Wechselgebiet

LWD Niederösterreich
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Danger d’avalanche

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

Points saillants

Beware of fresh wind slab!

Problèmes avalancheux

  • Wind slab

    • Above treeline

Avalanche Activity

Beware of fresh wind slab!

The avalanche risk is moderate above the tree line. Fresh snowdrift accumulations can be triggered as small to medium-sized avalanches by individual winter sports enthusiasts in all aspects. The avalanche prone locations are mainly in gullies, bowls and behind terrain edges. Small loose snow slides cannot be ruled out below the tree line.

Snowpack Structure

Around 10 cm of new fallen snow has already fallen on mostly bare ground. By Friday evening, 20 to 30 cm of new fallen snow will be added under strong to stormy winds. Fresh snowdrift accumulations are deposited above the tree line on a stable old snowpack or existing snowdrift packs. Weak layers are located between the drift snow packs or at the transition to the persistent weak layer. At low altitudes, the new fallen snow is partially moist.

Weather Forecast

It will continue to snow lightly to moderately in the Lower Austrian mountains during the coming night, with the snowfall intensifying from the east in the morning hours. Tomorrow, Friday, the mountains will be covered in clouds all day and heavy snowfall is expected in places. The snowfall will only gradually subside on Saturday night. The temperature at an altitude of 1500 metres will be around -7 degrees. Strong to gale-force winds from the north-east to north with gusts of between 80 km/h and 120 km/h. The snowfall level will be in the valleys and will rise to around 800 metres during the day.

Tendency

The avalanche danger remains the same on Saturday. The snowfall will subside in the night to Saturday and the wind will weaken. Spontaneous wet snow slides are possible due to the rise in temperatures.

Bulletin data: Avalanche Warning Service Lower Austria (CC BY 4.0)

Régions couvertes