Avalanche warning for region Hallingdal Tuesday 09.02.2021

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • 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 • Some steep slopes S, SW, W above 1100 masl • Ferskest fokksnø på rimlag i heng mot SV, myke flak med begrenset størrelse

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Difficult to trigger • 3 - Large • Few steep slopes N, NE, E, SE, S, SW, W, NW above 900 masl • De dypere kantkorn/rimlagene er etter hvert pakket ned i kompakte fokksnølag og vanskeligere å påvirke.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • The collapsing weak layer is thin < 3 cm. 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 1000 masl

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within 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 1000 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Some steep slopes E, SE, S, SW • I dette området var det liten oppbygging over rimlag, men meldt om over 10 cm oppbygging i rennene på Hallingskarvet.

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Many steep slopes N, NE, E, SE, S, SW, W, NW • Akkurat her var kantkrystallene ikke særlig store, men observerte større andre steder. Oppbygging og hardhet på overliggemde lag varier også. Det har bygget opp mer fokksnø i S-Ø retning.