Upper Passeier Valley

Weakly bonded old snow is to be evaluated with care and prudence.

Weakly bonded old snow is to be evaluated with care and prudence.

Weak layers in the old snowpack can still be released in some places by individual winter sport participants. The avalanche prone locations are to be found in all aspects above approximately 2200 m. Caution is to be exercised in particular at transitions from a shallow to a deep snowpack, when entering gullies and bowls for example, as well as in little used terrain. Mostly avalanches are medium-sized. The small wind slabs of the weekend are to be evaluated with care and prudence in particular on very steep shady slopes. On steep sunny slopes wet snow slides and avalanches are possible as the day progresses. Meticulous route selection is advisable.

Faceted weak layers exist in the snowpack, especially on shady slopes above approximately 2200 m, as well as on sunny slopes above approximately 2500 m. Stability tests and field observations confirm that the stability of the snowpack varies greatly within a small area. The somewhat older wind slabs are in some cases still prone to triggering. The high temperatures as the day progresses will give rise to softening of the snowpack in some places in particular on steep sunny slopes.

As the day progresses as a consequence of warming there will be an increase in the danger of wet avalanches.