Middle Lys Valley

Gradual increase in danger as a consequence of warming during the day and solar radiation.

Gradual increase in danger as a consequence of warming during the day and solar radiation.

In particular on steep sunny slopes and in starting zones where no previous releases have taken place more medium-sized avalanches are possible as a consequence of warming during the day. Especially in the southern areas bordering Piedmont most affected by the rainfall. In these regions the avalanche prone locations are more widespread. As a consequence of new snow and a strong wind from southeasterly directions, wind slabs formed on Wednesday in particular above approximately 2400 m. The fresh snow and in particular the wind slabs formed during the snowfall can be released easily in particular on steep shady slopes. They can be released, even by a single winter sport participant and reach medium size. Weak layers in the old snowpack can still be released in isolated cases by individual winter sport participants. This applies in particular on very steep northwest, north and northeast facing slopes above approximately 2500 m.

30 to 40 cm of snow fell on Wednesday above approximately 2000 m. The fresh snow and very particularly the wind slabs are bonding only slowly with the old snowpack. The surface of the snowpack will freeze to form a strong crust only at high altitudes and will soften during the day. As a consequence of highly fluctuating temperatures a crust formed on the surface during the last six days, this also applies on shady slopes below approximately 2500 m. The spring-like weather conditions gave rise to increasing moistening of the snowpack on sunny slopes below approximately 2900 m, also on shady slopes below approximately 2400 m. Towards its base, the snowpack is wet. This applies in all aspects below approximately 2400 m, and on sunny slopes below approximately 2900 m.

The avalanche danger will decrease gradually.