Valsavaranche

In particular steep sunny slopes base of rock walls: The danger of moist and wet avalanches will increase during the day.

In particular steep sunny slopes base of rock walls: The danger of moist and wet avalanches will increase during the day.

The fresh and older wind slabs must be evaluated with care and prudence. Single winter sport participants can release avalanches in some places, caution is to be exercised in particular at transitions from a shallow to a deep snowpack, when entering gullies and bowls for example. In particular here the avalanches can be released in the old snow and reach quite a large size. Night: The surface of the snowpack will freeze to form a strong crust. The spring-like weather conditions from the late morning will give rise to increasing moistening of the snowpack in particular on steep sunny slopes below approximately 3000 m. With the freezing level at 3000 metres, combined with the foehn wind and solar radiation, some wet and moist avalanches are still possible at medium mountain altitudes on slopes that have not yet been completely cleared in recent days. Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger and caution. Careful route selection is recommended. Backcountry tours should be concluded early.

A lot of snow fell in the last ten days. As a consequence of snowfall the strong to storm force northwesterly wind, snow drift accumulations formed during the last few days, especially along the border with France. On Monday the wind was strong in some localities over a wide area. The snowpack is unfavourably layered. In these regions at intermediate and high altitudes a lot of snow is lying for the time of year. Adjacent to ridgelines and in pass areas snow depths vary greatly, depending on the infuence of the wind. Some small and medium-sized moist avalanches have been released in the last few days. Isolated medium-sized and, in isolated cases, large slab avalanches have been released by people in the last few days.

The weather will be warm. The weather conditions will foster a stabilisation of the snow drift accumulations. The danger of natural wet avalanches will increase.