Bollettino valanghe

North and center of Aran

Lauegi Val d'Aran
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Pericolo valanghe

All elevations
3 · Marcato
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Non aggiornato — questo bollettino è scaduto 7 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

The avalanche conditions remain dangerous. Especially at the southern border of Aran the avalanche prone locations are more prevalent and the danger is greater.

Problemi valanghivi

  • Wind slab

    • Above treeline
    Dimensione
    3

    Stability: very poor · Frequency: some

  • Persistent weak layers

    • Above 2,000 m
    Dimensione
    3

    Stability: poor · Frequency: some

  • New snow

    • Above 1,500 m
    Dimensione
    2

    Stability: very poor · Frequency: some

Avalanche Activity

New snow and wind slabs. Weakly bonded old snow on shady slopes.

Wednesday: The southerly wind has transported the new snow significantly. In particular adjacent to ridgelines and in gullies and bowls sometimes large wind slabs formed. Thursday: As a consequence of new snow and a moderate wind from northerly directions, further wind slabs will form in the course of the day. Wind slabs can be released by people or triggered naturally. Faceted weak layers exist in the bottom section of the snowpack on shady slopes. Especially transitions from a shallow to a deep snowpack: Weak layers in the old snowpack can be released very easily. Sometimes the avalanches are dangerously large. The new snow can be released easily or naturally in all aspects. More dry snow slides and avalanches are to be expected as the day progresses, even medium-sized ones. As a consequence of solar radiation moist snow slides are possible in the afternoon. Individual gliding avalanches can also occur. At the border to Ribagorça and Pallars the avalanche prone locations are more prevalent and the danger is slightly greater. Backcountry touring and other off-piste activities call for extensive experience and great restraint.

Snowpack Structure

A great many medium-sized and large dry avalanches have been released as a consequence of new snow and strong wind. Distinct weak layers exist in the bottom section of the old snowpack in particular on rather lightly snow-covered west, north and east facing slopes. Thursday: 10 to 15 cm of snow, and even more in some localities, will fall until the afternoon. The northerly wind will transport the new snow. At intermediate altitudes there are 80 to 120 cm of snow, and even more in some localities. At elevated altitudes snow depths vary greatly, depending on the infuence of the wind.

Tendency

Friday: The avalanche danger will not decrease for the time being.

Bulletin data: Lauegi, Conselh Generau d'Aran (CC BY 4.0)

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