Avalanche warning for region Jotunheimen Saturday 25.12.2021

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within half a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 1100 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Few steep slopes N, NE, E, SE, S, SW, W, NW above 1100 masl

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 1 - Small • Few steep slopes NE, E, SE, S above 1400 masl

Avalanche Problems

• Dry slab avalanche • Poor bonding between crust and overlying snow • Within half a meter • Difficult to trigger • 2 - Medium • Few steep slopes NE, E, SE above 1000 masl • Imellom skarelag fra forrige uke ligger det enkelte lag som ikke ble våte når det regnet. Enkelte av disse gir resultat i stabilitetstester. Det gjelder både her og ellers i terrenget. Det er vanskelig å vite hvordan vannet har trukket ned, og dermed vanskelig å vite akkurat hvor de svake lagene ligger.

• Loose dry avalanche • Loose snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). • Very easy to trigger • 1 - Small • Many steep slopes NE, E, SE above 1500 masl • Ubunden snø som ligger i le for vestavær trenger bare en liten tilleggsbelastning for å løsne. Men det krever svært bratte heng.