Venediger Group Central

Slight daytime changes in wet snow avalanches.

Slight daytime changes in wet snow avalanches.

The avalanche danger increases from low to moderate during the daytime changes above 2500 metres. In a few places in the terrain, wet avalanches can occur spontaneously or be triggered by winter sports. Avalanches usually remain small, but can occasionally tear through the wet snow to the ground and reach medium size. Above around 2500 m, there are isolated avalanche prone locations in the extended northern sector where medium-sized slab avalanches can be triggered in persistent weak layers. Be careful at the steep transitions from little to more snow.

The snowpack can outgoing longwave radiation well overnight. A stable melt-freeze crust forms, which slowly softens during the day. The snowpack underneath consists of compact snow that is characterised by rain up to high altitudes. On shady slopes above around 2500 metres, there are still weak layers of angular forms and deep rime in the old snowpack close to the ground. Overall, there is only a little snow left.

The night is clear. On Friday, the sun shines from a mostly cloudless sky. Visibility will be excellent in the very dry air. Light winds from north to east. At 2000 m -1 to +7 degrees, at 3000 m -6 to -1 degrees.

Favourable conditions prevail in the morning after a clear night. During the day, the danger of wet avalanches increases with sunlight and warming.