Middle Lys Valley

Fresh wind slabs require caution. In particular at high altitude the avalanche prone locations are more widespread.

Fresh wind slabs require caution. In particular at high altitude the avalanche prone locations are more widespread.

5 to 15 cm of snow fell on Sunday above approximately 2300 m. As a consequence of the strong northwesterly wind, fresh snow drift accumulations formed. These are to be found in gullies and bowls, and behind abrupt changes in the terrain, not only adjacent to ridgelines and in pass areas. The fresh and somewhat older wind slabs can be released by a single winter sport participant. They are mostly rather small but to be assessed with care and prudence. As the temperature drops individual mostly small dry avalanches are to be expected. The avalanche prone locations are to be found in particular on very steep slopes at intermediate and high altitudes. They can be released in particular at the base of rock walls. As the day progresses as a consequence of solar radiation there will be only a slight increase in the danger of moist and wet avalanches.

10 to 25 cm of snow, and even more in some localities, has fallen since Friday above approximately 2300 m. At high altitudes and in high Alpine regions snow depths vary greatly, depending on the infuence of the wind. In some cases the various wind slabs have bonded still only poorly with the old snowpack, in particular at high altitude. Sunshine and high temperatures gave rise to gradual moistening of the snowpack below approximately 2700 m. Individual weak layers exist in the snowpack in shady places that are protected from the wind, especially above approximately 2400 m.

The avalanche danger will increase a little during the day. Wet avalanches during the day are possible.