Middle Lys Valley

The fresh snow and the wind slabs that are forming during the snowfall must be evaluated with care and prudence.

The fresh snow and the wind slabs that are forming during the snowfall must be evaluated with care and prudence.

Gradual increase in avalanche danger as a consequence of new snow and wind. The prevalence of the avalanche prone locations will increase as the day progresses. In particular in the regions neighbouring those that are subject to danger level 3 (considerable) soft wind slabs will form. These can be released by a single winter sport participant in some cases, especially at their margins. They will be covered with new snow and therefore difficult to recognise. Especially places where weaknesses exist in the old snowpack are unfavourable. This applies in particular on very steep shady slopes at the base of rock walls and behind abrupt changes in the terrain. Here the avalanches can be triggered in the weakly bonded old snow and reach medium size. Isolated whumpfing sounds indicate the danger.

5 to 20 cm of snow will fall until Sunday. The sometimes moderate wind will transport the snow. Mainly along the border with Piedmont. Faceted weak layers exist in the old snowpack in particular on shady slopes. At intermediate and high altitudes snow depths vary greatly, depending on the infuence of the wind. The formation of surface frost is reported at various exposures and altitudes.

Some snow will fall. The wind will be moderate in some localities. These weather conditions will cause a gradual rise in the avalanche danger.