Wind slabs and weakly bonded old snow represent the main danger.
Weak layers in the old snowpack can be released by individual winter sport participants. The avalanche prone locations are to be found on steep shady slopes above the tree line and on steep sunny slopes above approximately 2400 m. These places are difficult to recognise. Avalanches can be released in deep layers of the snowpack and reach large size in isolated cases. This applies in particular on very steep shady slopes in high Alpine regions. Caution is to be exercised at transitions from a shallow to a deep snowpack. As a consequence of new snow and strong wind the wind slabs will increase in size moderately. These avalanche prone locations are to be found in particular adjacent to ridgelines and in gullies and bowls and on steep shady slopes. Their prevalence will increase with altitude. On steep grassy slopes and at low and intermediate altitudes more gliding avalanches are possible, but they will be mostly small.
Snowpack
dp.1: deep persistent weak layer dp.6: cold, loose snow and wind
30 to 50 cm of snow, and even more in some localities, fell in the last few days. Some snow will fall on Thursday. The wind will be strong to storm force over a wide area. Faceted weak layers exist in the bottom section of the snowpack at elevated altitudes. Faceted weak layers exist in the top section of the snowpack especially on shady slopes. Fresh wind slabs are lying on soft layers in particular on shady slopes at elevated altitudes.
Tendency
The avalanche danger will persist. The wind will be strong.
Danger level
treeline
Avalanche Problem
Wind slab
Treeline
Persistent weak layer
Treeline
As a consequence of new snow and wind a treacherous avalanche situation will still be encountered.
As a consequence of new snow and a strong northerly wind, avalanche prone wind slabs formed in the last few days in particular adjacent to ridgelines and in gullies and bowls. The avalanche prone locations are to be found in particular in steep terrain above the tree line. In all aspects avalanches can be released easily and reach quite a large size. The prevalence of the avalanche prone locations will increase with altitude. They are difficult to recognise. More recent wind slabs are to be avoided in all aspects. Caution is to be exercised at transitions from a shallow to a deep snowpack.
Snowpack
dp.6: cold, loose snow and wind dp.1: deep persistent weak layer
The snowpack will be prone to triggering above the tree line. The more recent wind slabs are lying on the unfavourable surface of an old snowpack in all aspects at intermediate and high altitudes. Faceted weak layers exist in the bottom section of the snowpack in particular at elevated altitudes. Weak layers in the old snowpack can be released in isolated cases and mostly by large additional loads especially on steep, rather lightly snow-covered shady slopes.
Tendency
The avalanche danger will persist.
Danger level
treeline
Avalanche Problem
Wind slab
Treeline
Fresh wind slabs require caution.
As a consequence of new snow and a strong wind, sometimes avalanche prone wind slabs will form at elevated altitudes. These avalanche prone locations are to be found in particular adjacent to ridgelines and in gullies and bowls and on steep shady slopes. On steep grassy slopes and at intermediate and high altitudes individual gliding avalanches are possible, but they will be mostly small.
Snowpack
dp.6: cold, loose snow and wind
5 to 20 cm of snow, and up to 30 cm in some localities, fell in the last few days. Some snow will fall on Thursday. The wind will be strong to storm force over a wide area. Fresh wind slabs are lying on soft layers in particular on shady slopes at elevated altitudes.
Tendency
The avalanche danger will persist. Fresh wind slabs require caution.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wind slab
Treeline
Wind slabs and weakly bonded old snow require caution.
Single winter sport participants can release avalanches. These can penetrate even deep layers and reach medium size. The avalanche prone locations are to be found on steep shady slopes above the tree line and on steep sunny slopes above approximately 2600 m. These places are difficult to recognise. At elevated altitudes the avalanche prone locations are more prevalent and the danger is slightly greater. Caution is to be exercised at transitions from a shallow to a deep snowpack. As a consequence of new snow and strong wind the wind slabs will increase in size moderately. These avalanche prone locations are to be found in particular adjacent to ridgelines and in gullies and bowls and on steep shady slopes. On steep grassy slopes and at intermediate and high altitudes individual gliding avalanches are possible, but they will be mostly small.
Snowpack
dp.1: deep persistent weak layer dp.6: cold, loose snow and wind
5 to 20 cm of snow, and even more in some localities, fell in the last few days. Some snow will fall on Thursday. The wind will be strong to storm force over a wide area. Faceted weak layers exist in the bottom section of the snowpack at elevated altitudes. Faceted weak layers exist in the top section of the snowpack especially on shady slopes. Fresh wind slabs are lying on soft layers in particular on shady slopes at elevated altitudes.
Tendency
The avalanche danger will persist. Wind slabs and weakly bonded old snow require caution.
Danger level
treeline
Avalanche Problem
Wind slab
Treeline
Persistent weak layer
Treeline
As a consequence of new snow and wind a treacherous avalanche situation will still be encountered.
As a consequence of new snow and a strong northerly wind, avalanche prone wind slabs formed in the last few days in particular adjacent to ridgelines and in gullies and bowls. The avalanche prone locations are to be found in particular in steep terrain above the tree line. In all aspects avalanches can be released easily and reach quite a large size. The prevalence of the avalanche prone locations will increase with altitude. They are difficult to recognise. More recent wind slabs are to be avoided in all aspects. Caution is to be exercised at transitions from a shallow to a deep snowpack.
Snowpack
dp.6: cold, loose snow and wind
The snowpack will be prone to triggering above the tree line. The more recent wind slabs are lying on the unfavourable surface of an old snowpack in all aspects at intermediate and high altitudes. Faceted weak layers exist in the bottom section of the snowpack in particular at elevated altitudes, in particular on steep shady slopes.
