Tennen Mountains, Gosaukamm

Freshly generated snowdrifts require attentiveness

Freshly generated snowdrifts require attentiveness

Avalanche danger above 2200m is considerable, below that altitude danger is moderate. Avalanches can be triggered even by minimum additional loading above the treeline, particularly in gullies and bowls and behind protruberances in the landscape in all aspects. Above 2200m avalanches can be triggered from more deeply embedded layers inside the snowpack and often grow to large size, esp. on W/N/E facing slopes. Settling noises and glide-craeks are indicators of danger, remote triggerings possible. As a result of solar radiation, naturally triggered, generally small-sized loose-snow avalanches can be expected on extremely steep sunny slopes.

The fresh snow has been transported far-reachingly. Exposed ridges and crests are windblown, gullies and bowls are filled to the brim, even at forest riims. Frsh snowdrifts have been deposited atop loose layers at high altitudes on extended north-facing slopes, often atop a deep layer of graupel. Above 2200m the snowpack layering is unfavorable, with several weak layers of faceted crystals. In some places the surface hoar is still prone to triggering. The entire snowpack can glide over steep rock plates or grassy slopes.

Nocturnal skies will be star-studded, mostly without high fog. Winds will be light everywhere. At 2000m: between 3 and 5 degrees; at 3000m: between -2 and 0 degrees. On Friday, radiantly sunny weather will continue, local high-fogbanks in the valleys will soon disperse. Winds light to moderate. At high altitudes, very mild. At 2000m: +5 degreese; at 3000m: -1 degree. Skies o Friday night will again be cloudless and have only light winds.