Wind slab
- Above treeline
- Dimensione
- 2
Stability: poor · Frequency: some
Wind slabs and weakly bonded old snow require caution.
Stability: poor · Frequency: some
Stability: poor · Frequency: some
Stability: very poor · Frequency: some
Wind slabs and weakly bonded old snow require caution.
The new snow and wind slabs are lying on top of a weakly bonded old snowpack. As a consequence of new snow and a storm force wind, further wind slabs will form. The avalanche prone locations are numerous, especially in areas close to the tree line, as well as above the tree line. Even single winter sport participants can release avalanches easily. As a consequence of the rain, the likelihood of wet avalanches being released will increase. This applies especially on cut and grassy slopes below approximately 1800 m.
20 to 40 cm of snow, and even more in some localities, fell in the past few hours. In some regions in some regions up to 20 cm of snow will fall until midday. The wind will be strong in some cases. More rain than expected has fallen, in particular at low altitude. The wind will transport the snow. Further wind slabs will form. The snowpack will be prone to triggering over a wide area. The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Somewhat older wind slabs are lying on surface hoar. Distinct weak layers exist in the bottom section of the old snowpack. This applies in particular on west, north and east facing slopes above the tree line. The rain will give rise to extreme and thorough wetting of the snowpack at low altitude.
Gradual decrease in danger of dry avalanches. Increase in danger of wet avalanches as a consequence of warming.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)