Nock Mountains

Fresh snowfall, not much wind

Fresh snowfall, not much wind

Avalanche danger levels above 200m is moderate, below that altitude danger is low. Shallow snowdrift accumulations can be triggered in some places as a small-sized slab avalanche even by minimum additional loading (one skier), particularly on W/N/S facing slopes. Above 2200m, weak layers inside the snowpack can also be triggered in isolated cases. The shallow-snow transitions in snow-filled gullies and bowls are especially treacherous. Danger zones tend to increase in frequency with ascending altitude.

Up to 20-30cm of fresh snow is expected, locally more. Winds in exposed terrain will be blowing above transport velocity, thus generating fresh snowdrift accumulations especially in ridgeline terrain. Weak layers for slab avalanches lie inside the fresh snow and fresh drifts. On shady slopes above 2000m the old snowpack can itself be a weak layer. Above 2200m there are several weak layers of faceted crystals inside the old snow, often prone to triggering. The entire snowpack can glide over steep rocky plates or grass-covered slopes.

Nocturnal skies will be mostly heavly cloud-covered, foehn winds will ease off significantly by midnight. In the latter part of the night, snowfall will set in from the south and west. Snowfall level: initially above 1500m, descending to valley level by morning. Initially, rainfall is possible in the southern regions up to 2000m. On Tuesday, snowfall from west and south, quickly spreading to all mountain regions. In the afternoon, drier from the west, possibly with brief bright intervals. All in all, in southern regions over 30cm. Visibility mostly heavily reduced. Winds mostly light to moderate, only at summit level in the Northern Alps will winds be brisk. At 2000m. -7 to -3 degrees; at 3000m: -11 degrees.

Little change expected before Wednesday