Middle Lys Valley

Locally increased avalanche danger along the borders with Piedmont.

Locally increased avalanche danger along the borders with Piedmont.

At high altitude the avalanche prone locations are more prevalent. The new snow will be deposited on the unfavourable surface of an old snowpack in particular on steep shady slopes. As a consequence of snowfall and the moderate wind, the snow drift accumulations will increase in size in the course of the day. Medium-sized natural avalanches are possible. They can be released in deep layers. Even single winter sport participants can release avalanches in some places. Caution is to be exercised in particular on very steep slopes, and in gullies and bowls, and behind abrupt changes in the terrain.

20 to 30 cm of snow, and even more in some localities, has fallen since Saturday above approximately 2000 m. 20 to 50 cm of snow, and even more in some localities, will fall until Thursday above approximately 1500 m. Large-grained weak layers exist in the old snowpack on shady slopes. In all altitude zones a little snow is lying on south facing slopes. At intermediate and high altitudes snow depths vary greatly, depending on the infuence of the wind. The numerous rocks hidden by the recent snow are the main danger.

As a consequence of rising temperatures and solar radiation the snowpack will consolidate during the next few days.