Fresh snow and fresh snowdrift accumulations are often triggerable above the treeline on shady slopes by one sole skier and then possibly growing to medium size. Danger zones occur mostly in steep shady terrain, also behind protruberances in the landscape and in wind-loaded gullies and bowls. In isolated cases, small slab avalanches can be triggered on high-altitude extremely steep shady slopes also in the old snow, usually by large additional loading and where the snow is shallow.
Snowpack
By Tuesday evening, 15-25 cm of fresh snow is expected widespread. Amid intermittently strong westerly winds, the snow will be transported and fresh snowdrifts will accumulate. Fresh snow and drifts will bond poorly-to-moderately on steep shady slopes, atop a soft old snowpack. Snowdrifts from previous days will often be blanketed. The snowpack beneath them is generally well consolidated. At lower altitudes the fresh snowfall often lies deposited on bare ground.
Tendency
Fresh snow and drifts remain prone to triggering
Danger level
treeline
Avalanche Problem
New snow
Treeline
Increasing avalanche danger du to fresh snow and winds
Fresh snow and fresh snowdrift accumulations are often triggerable by one sole skier and then possibly growing to medium size. Danger zones tend to increase with ascending altitude, particularly on steep shady slopes, behind protruberances in the landscape and in wind-loaded gullies and bowls. Also naturally triggered avalanches reaching medium size are possible. Activities in backcountry demand experience in avalanche danger assessment. In isolated cases, small slab avalanches can be triggered on high-altitude extremely steep shady slopes also in the old snow, usually by large additional loading and where the snow is shallow.
Snowpack
By Tuesday evening, 20-30 cm of fresh snow is expected widespread, locally up to 40 cm. Amid intermittently strong westerly winds, the snow will be transported and fresh snowdrifts will accumulate. Fresh snow and drifts will bond poorly-to-moderately with the soft old snowpack on steep shady slopes. Snowdrifts from previous days will often be blanketed. The snowpack beneath them is generally well consolidated. At lower altitudes the fresh snowfall often lies deposited on bare ground.
