Valgrisenche

Wind slabs and weakly bonded old snow represent the main danger. The weather conditions will facilitate a stabilisation of the snowpack.

Wind slabs and weakly bonded old snow represent the main danger. The weather conditions will facilitate a stabilisation of the snowpack.

The fresh snow and the wind slabs can still be released in some cases in particular on very steep shady slopes, in particular adjacent to ridgelines and in gullies and bowls in high Alpine regions. The new snow and wind slabs are lying on the unfavourable surface of an old snowpack. Single backcountry tourers or freeriders can release avalanches in isolated cases, including medium-sized ones. In addition as the day progresses on south facing slopes, further individual small and, in isolated cases, medium-sized moist avalanches are possible, in particular in steep rocky terrain in high Alpine regions, as well as on very steep grassy slopes.

In some localities 10 to 25 cm of snow, but less in some localities, fell on Sunday above approximately 2300 m. The sleet gave rise to moistening of the snowpack in all aspects below approximately 2300 m. As a consequence of highly fluctuating temperatures a crust formed on the surface. Sunshine and high temperatures will give rise as the day progresses to moistening of the snowpack on very steep south facing slopes at intermediate altitudes. Weak layers exist in the snowpack. At intermediate and high altitudes snow depths vary greatly, depending on the infuence of the wind.

As a consequence of highly fluctuating temperatures a favourable avalanche situation will develop during the next few days. The danger of dry avalanches will persist.