Avalanche warning for region Jotunheimen Thursday 09.03.2023

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • 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. • Easy to trigger • 2 - Medium • Few steep slopes • Vi fikk ikke skytende sprekker osv i fokksnøen, så den opplevdes ikke så potent der vi var selv om det svake laget har ugunstige egenskaper.

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Difficult to trigger • 1 - Small • Few steep slopes E, SE, S • Fokksnøens utbredelse er i hovedsak i små lommer og noe skavloppbygning etter NV vindretninger siste tida. Denne obs'n fokuserer på østvendt terreng ifm snøskredvarling for Fv. 53

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Very difficult to trigger • 3 - Large • Few steep slopes N, NE, E, SE, S, SW, W, NW • Svært ustabil snø de nedre 20 cm. En synker veldig lett ned i denne kantkorna snøen når en fjerner overliggende snø ved graving. Dette laget er godt armert av overliggende islag, og kan trolig aktiveres få steder. Denne obs'n fokuserer på østvendt terreng, men dette problemet eksisterer uavhengig av himmelretning.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes E, SE, S above 1000 masl

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes E, SE, S above 1000 masl