Middle Lys Valley

In the regions neighbouring those that are subject to danger level 4 (high) the avalanche prone locations are more prevalent.

In the regions neighbouring those that are subject to danger level 4 (high) the avalanche prone locations are more prevalent.

As a consequence of new snow and a sometimes moderate wind, soft wind slabs will form by Wednesday. They will become increasingly prone to triggering in particular on north to east to south facing aspects. Natural avalanches are possible, even medium-sized ones. Even single winter sport participants can release avalanches. Weak layers in the old snowpack necessitate caution. Especially on very steep slopes the avalanches can be triggered in the old snow and reach quite a large size. Remotely triggered avalanches are possible. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack serve as an alarm sign.

Tuesday: 2 to 5 cm of snow will fall from late morning above approximately 1600 m. 15 to 20 cm of snow, and even more in some localities, will fall until Wednesday above approximately 1800 m. The weather conditions will give rise to unfavourable bonding of the snowpack in some places. The moderate wind will transport the new snow. Faceted weak layers exist in the old snowpack in particular on west, north and east facing slopes.

The avalanche danger will not decrease for the time being. Over a wide area 10 to 15 cm of snow will fall until Thursday above approximately 2000 m.