Persistent weak layers
- Above 2,000 m
Caution esp. at transitions from shallow to deep snow!
Caution esp. at transitions from shallow to deep snow!
Avalanche danger above 2000m is moderate, below that altitude danger is low. Main problem: weak layers in old snow. Medium-sized slab avalanches can be triggered especially by large additional loading at transitions from shall to deep snow. Avalanche prone locations occur primarily in very steep terrain in W/N/E aspects. Frequency and size increase with ascending altitude. In addition, on very steep slopes with smooth ground below 2000m isolated small glide-snow avalanches can trigger naturally in all aspects. Avoid stopping or staying below glide cracks.
A few centimeters of new snow cover older snowdrift accumulations. At higher altitudes the middle part of the snowpack contains weak layers consisting of faceted crystals close to melt-freeze crusts with varying thickness. Up to intermediate altitudes a thin superficial crust will form during the course of the night. The snowpack base is frequently wet at the base, as a consequence the snowpack can start gliding over smooth ground.
Avalanche danger levels will diminish amid calm high pressure weather.
Bulletin data: Avalanche Warning Service Bavaria (CC BY 4.0)