Middle Lys Valley

Exceptional snowfall above 2500 m and lower snow level than expected: the avalanche danger level reaches 5-very high, then decreases in the afternoon/evening.

Exceptional snowfall above 2500 m and lower snow level than expected: the avalanche danger level reaches 5-very high, then decreases in the afternoon/evening.

Thursday: 100 to 120 cm of snow, and even more in some localities, will fall above approximately 2500 m. Wednesday: As a consequence of new snow and strong wind the prevalence and size of the avalanche prone locations will increase as the day progresses, especially above approximately 2500 m. In particular here very large natural avalanches, capable of reaching the valleys, must be expected frequently. In particular on shady slopes the avalanches can be triggered in deep layers of the snowpack and reach very large size in some cases. The sleet will give rise to thorough wetting of the snowpack over a wide area below approximately 2700 m. Moist avalanches can in some places be released in the weakly bonded old snow.

Wednesday: 40 cm of snow fell in the late morning above approximately 2500 m. Above approximately 2400 m snow fell on Tuesday. The high humditiy gave rise to moistening of the snowpack over a wide area below approximately 3000 m. The sleet gave rise to thorough wetting of the snowpack in all aspects below approximately 2700 m. Towards its base, the snowpack is wet. Above approximately 2500 m: A lot of snow will fall until Thursday. The sleet will give rise to unfavourable bonding of the old snowpack in particular at intermediate and high altitudes. Over a wide area new snow is lying on a wet snowpack.

Gradual decrease in avalanche danger as the precipitation eases.