Wind slab
- Above treeline
- Size
- 2
Stability: poor · Frequency: some
Fresh wind slabs are to be evaluated critically. Gliding avalanches are still possible.
Stability: poor · Frequency: some
Stability: very poor · Frequency: few
Fresh wind slabs are to be evaluated critically. Gliding avalanches are still possible.
The fresh and older wind slabs represent the main danger. The warm fresh snow and in particular the many mostly small wind slabs can be released by a single winter sport participant in particular on steep shady slopes above the tree line. As a consequence of a strong to storm force wind from westerly directions, avalanche prone wind slabs will form in particular in gullies and bowls and behind abrupt changes in the terrain. Caution is to be exercised in particular on steep shady slopes in areas close to the tree line and above the tree line. The avalanche prone locations are clearly recognisable to the trained eye. Places where surface hoar has been covered with snow are especially unfavourable. Isolated small natural wet avalanches are possible as a consequence of the rain. Isolated small and medium-sized gliding avalanches are possible on steep grassy slopes. Areas with glide cracks are to be avoided. Avalanches can additionally in very isolated cases be released in the weakly bonded old snow. These avalanche prone locations are to be found especially on very steep shady slopes above approximately 2400 m, caution is to be exercised in particular at transitions from a shallow to a deep snowpack. Avalanches can reach medium size.
Some snow will fall during the night. More snow than expected has fallen. In particular in the west 10 to 20 cm of snow has fallen thus far. The westerly wind will transport the new snow. Some rain will fall from late morning in some regions, especially below approximately 2000 m. Shady slopes: The old snowpack consists of faceted crystals and has a loosely bonded surface. The fresh wind slabs are lying on soft layers. Steep sunny slopes: The old snowpack consists of rounded crystals and its surface has a melt-freeze crust that is strong in many cases.
Fresh wind slabs are to be evaluated critically.
Bulletin data: Avalanche Warning Service Tirol, avalanche.report (CC BY 4.0)