Valgrisenche

Gradual increase in avalanche danger as a consequence of new snow and strong wind.

Thursday: 15 to 50 cm of snow, but less in some localities, will fall from midday above approximately 2000 m. The strong wind will transport the new snow significantly. The fresh wind slabs will be deposited on a weakly bonded old snowpack especially on very steep shady slopes.

As a consequence of new snow and strong wind there will be an increase in the avalanche danger within the current danger level.

Gradual increase in avalanche danger as a consequence of new snow and strong wind.

As a consequence of new snow and a strong wind, avalanche prone wind slabs will form in the course of the day. In particular along the border with France and along the border with Switzerland the prevalence and size of the avalanche prone locations will increase. In the afternoon the natural avalanche activity will gradually increase. These can in particular be released in near-surface layers. Places where weaknesses exist in the old snowpack are especially unfavourable. In particular here the avalanches can be triggered in deep layers of the snowpack and reach medium size. Backcountry touring and other off-piste activities call for meticulous route selection. In steep terrain there is a danger of falling on the hard snow surface.