Bulletin d’avalanche

North and center of Aran

Lauegi Val d'Aran
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Danger d’avalanche

Above 2,200 m· Matin
2 · Modéré
Below 2,200 m· Matin
1 · Faible
All elevations· Après-midi
2 · Modéré
Périmé — ce bulletin a expiré 6 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Weakly bonded old snow on wind-protected shady slopes. Gliding avalanches and wet snow slides as the day progresses.

Problèmes avalancheux

  • Persistent weak layers· Matin

    • Above 2,200 m
    Taille
    2

    Stability: fair · Frequency: some

  • Gliding snow· Matin

    • Toutes altitudes
    Taille
    1

    Stability: very poor · Frequency: few

  • Wet snow· Matin

    • Toutes altitudes
    Taille
    1

    Stability: very poor · Frequency: few

  • Persistent weak layers· Après-midi

    • Above 2,200 m
    Taille
    2

    Stability: fair · Frequency: some

  • Gliding snow· Après-midi

    • Toutes altitudes
    Taille
    2

    Stability: very poor · Frequency: some

  • Wet snow· Après-midi

    • Toutes altitudes
    Taille
    2

    Stability: very poor · Frequency: some

Avalanche Activity

Weakly bonded old snow on wind-protected shady slopes. Gliding avalanches and wet snow slides as the day progresses.

The old wind slabs can still be released in some cases in particular on wind-protected shady slopes and at intermediate and high altitudes. They are poorly bonded with the old snowpack. The avalanche prone locations are to be found especially in gullies and bowls, and behind abrupt changes in the terrain and in steep rocky terrain. Sometimes the avalanches are medium-sized. As the day progresses the likelihood of gliding avalanches and wet snow slides being released will increase gradually on very steep sunny slopes in all altitude zones. Medium-sized and, in isolated cases, large natural avalanches are possible. Backcountry touring and other off-piste activities call for meticulous route selection. Apart from the danger of being buried, restraint should be exercised as well in view of the danger of avalanches sweeping people along and giving rise to falls.

Snowpack Structure

Sunshine and high temperatures will give rise as the day progresses to increasing moistening of the snowpack especially on very steep sunny slopes. Shady slopes: The old wind slabs remain in some cases prone to triggering. In its middle, the snowpack is well consolidated and has faceted crystals on the surface. At intermediate altitudes there are 150 to 250 cm of snow, and even more in some localities.

Tendency

Friday: The weather will be sunny at times. The danger of dry avalanches will persist. The danger of moist avalanches will decrease gradually.

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

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