Persistent weak layers
N
NE
E
SE
S
SW
W
NW
- Above treeline
Bollettino valanghe
Vedi sulla mappaWerdenfels Alps
LWD Bayern
Pericolo valanghe
- Above treeline
- 2 · Moderato
- Below treeline
- 1 · Debole
Non aggiornato — questo bollettino è scaduto 7 months ago. Stai vedendo condizioni passate, non il bollettino in corso.
In sintesi
Older wind slab lies on top of a weak persistent weak layer.
Problemi valanghivi
Persistent weak layers
NNEESESSWWNW- Below treeline
Avalanche Activity
Older wind slab lies on top of a weak persistent weak layer.
The avalanche risk is moderate above the tree line and low below it. Persistent weak layers are problematic. In some places, old snowdrift accumulations can be triggered as a slab avalanche by even a small additional load in very steep terrain in the north-west to north to south-east aspects. The number and size of avalanche prone locations increase with altitude. Avalanches can reach medium size if deeper, weak layers are also triggered.
Snowpack Structure
Older snowdrift accumulations lie on soft layers or on a melt-freeze crust, under which crystals, some of which have an angular structure, can be found. The old snowpack usually consists of faceted crystals and is interspersed with several melt-freeze crusts. A thin melt-freeze crust forms on the surface on the sunny slopes overnight. Overall, there is little snow.
Tendency
Slight increase in avalanche danger with new fallen snow and wind.
Bulletin data: Avalanche Warning Service Bavaria (CC BY 4.0)