Middle Lys Valley

Backcountry touring and other off-piste activities call for meticulous route selection.

Backcountry touring and other off-piste activities call for meticulous route selection.

The wind slabs of the last few days are in some cases prone to triggering. Avalanches can be released by a single winter sport participant. In some places avalanches can be triggered in deep layers and reach medium size. This applies in particular on very steep northwest, north and northeast facing slopes above approximately 2300 m in little used backcountry terrain. Such avalanche prone locations are barely recognisable, even to the trained eye. As a consequence of warming during the day and solar radiation small and medium-sized natural wet avalanches are possible. This applies especially on steep north facing slopes below approximately 2400 m, and elsewhere below approximately 2700 m.

15 to 40 cm of snow, and even more in some localities, has fallen since Saturday above approximately 2000 m. This especially along the border ridge with Piedmont. Sunshine and high temperatures gave rise to moistening of the snowpack in particular on sunny slopes below approximately 2700 m. As a consequence of highly fluctuating temperatures a crust formed on the surface during the last few days, this also applies on shady slopes below approximately 2000 m. In particular at intermediate altitudes less snow than usual is lying. On sunny slopes below approximately 2100 m hardly any snow is lying.

As the day progresses as a consequence of warming during the day and solar radiation there will be an increase in the danger of moist and wet avalanches. Gradual decrease in danger of dry avalanches.