Boletín de aludes

Gurgler Group

LWD Südtirol
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Peligro de aludes

Above treeline
4 · Fuerte
Below treeline
3 · Notable
Desactualizado: este boletín caducó 2 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

The avalanche danger is within the lower range of danger level 4 (high). Weakly bonded old snow is to be evaluated with care and prudence. Fresh wind slabs at high altitude.

Problemas de aludes

  • New snow

    • Above treeline
    Tamaño
    3

    Stability: very poor · Frequency: many

  • Persistent weak layers

    • Above 2,400 m
    Tamaño
    3

    Stability: poor · Frequency: some

  • Gliding snow

    • Below 2,600 m
    Tamaño
    3

    Stability: very poor · Frequency: some

Avalanche Activity

The avalanche danger is within the lower range of danger level 4 (high). Weakly bonded old snow is to be evaluated with care and prudence. Fresh wind slabs at high altitude.

Natural avalanches are a clear indication of a weakly bonded snowpack. More natural avalanches are possible. Avalanches can be triggered in near-surface layers and reach quite a large size. Avalanche prone locations are to be found in all aspects above the tree line. Shady slopes where surface hoar has been covered with snow are especially unfavourable. Great caution and restraint are required. In addition the fresh wind slabs should be taken into account. They can be released by a single winter sport participant above the tree line. This applies especially adjacent to ridgelines and in pass areas. Mostly avalanches are medium-sized. On rocky slopes dry loose snow avalanches are possible as the day progresses. In the event of prolonged bright spells this applies. In addition a latent danger of gliding avalanches exists, in particular on steep sunny slopes below approximately 2600 m, as well as on steep shady slopes below approximately 2400 m. These can reach dangerously large size. Areas with glide cracks are to be avoided as far as possible.

Snowpack Structure

Over a wide area 40 to 60 cm of snow, and even more in some localities, has fallen. In some places new snow is lying on surface hoar. Faceted weak layers exist in the top section of the old snowpack in particular on west, north and east facing slopes. This applies above approximately 2400 m. The fresh wind slabs are lying on soft layers.

Tendency

Backcountry touring and other off-piste activities call for extensive experience in the assessment of avalanche danger and restraint. Weakly bonded old snow represents the main danger.

Bulletin data: Avalanche Warning Service South Tyrol, avalanche.report (CC BY 4.0)

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