Boletín de aludes

Lechquellen Mountains

LWD Vorarlberg
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Peligro de aludes

All elevations
2 · Moderado
Desactualizado: este boletín caducó 6 months ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Wet snow + drifts on shady slopes

Problemas de aludes

  • Persistent weak layers

    • Above 2,000 m
  • Wind slab

    • Above treeline
  • Wet snow

    • Below 2,200 m

Weather Forecast

A cold front will bring heavy cloud until late morning, poor visibility, light snowfall. In afternoon hours clouds will disperse from the west, towards evening skies will clear completely. Temperature at 2000m: -3 degrees; at 3000m: -9 degrees. Moderate southwesterly-to-northwesterly winds at high altitudes.

Tendency

On Friday no change expected, as the result of an intermediate high-pressure front.

Avalanche Activity

Wet snow + drifts on shady slopes

Isolated avalanches can still be triggered in the weak old snow by winter sports enthusiasts, particularly in little-skied backcountry terrain where the surface is not capable of bearing loads. Danger zones occur especially in spots where the snow is relatively shallow, and in transitions from shallow to deep snow. Avalanches can trigger down to deeper layers inside the snowpack and grow to large size. Caution urged towards freshly generated snowdrift accumulations, particularly on steep shady slopes they are prone to triggering. On hard-frozen steep slopes, the danger of sliding and falling require special caution. In addition, isolated wet slab avalanches can be triggered in very steep terrain where no melt-freeze crust capable of bearing loads was able to form during the night.

Snowpack Structure

Below 1500m, heavy rain, above that altitude appx. 10cm of fresh snow, somewhat less in Verwall and Silvretta, on sunny slopes deposited atop a barely frozen surface, on shady slopes frequently atop surface hoar and below 2300-2500m atop a very hard rain crust. The middle layer of the snowpack often consists of settled, well consolidated layers which on shady slopes at higher altitudes blanket an old snow fundament with large sized cup-shaped crystals.

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

Regiones cubiertas