Avalanche warning for region Hallingdal Friday 25.02.2022

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • 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 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 • Few steep slopes NE, E, SE, S above 1000 masl • Finner ikke det svake laget i profilen, men tidvis kraftig vind med kraftig snøfokk og snøbyge med Ca 5-8 cm snø har dannet ferske fokksnøflak i østlige eksposisjoner.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Very difficult to trigger • 3 - Large • Few steep slopes NE, E, SE, S above 1000 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The collapsing weak layer is thin < 3 cm. • Easy to trigger • 2 - Medium • Some steep slopes NE, E, SE above 1000 masl

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Over one meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 3 - Large • N, NE, E, SE, S, SW, W, NW above 1000 masl

Avalanche Problems

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

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within a meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 3 - Large • Few steep slopes N, NE, E, SE, S above 1200 masl • SSU ble utført på et meget vindutsatt sted og nok ikke veldig representativt. Svakt lag: Kantkornlag inne i fokksnøen. Overliggende lag er svært hardt.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Over one meter • Very difficult to trigger • 3 - Large • Some steep slopes NE, E, SE, S above 1100 masl

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within a meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 3 - Large • Some steep slopes N, NE, E, SE, S above 1200 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, NW above 1000 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. • Easy to trigger • 1 - Small • NE

Avalanche Problems

• Dry slab avalanche • The weak layer collapses easily and clean (easy propagation). 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, NW above 1000 masl

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

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Spontaneous release • 2 - Medium • Some steep slopes NE, E, SE above 900 masl • Vær oppmerksom også under skoggrensa da snøen dannet flak også der. Jeg vil tro noen skred kan løsne av seg selv mens Været står på som mest. Etter det må det sannsynligvis liten tb til.

• 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 • 3 - Large • Some steep slopes N, NE, E, SE above 1100 masl • Str mellom 1-1,5

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Spontaneous release • 2 - Medium • Some steep slopes NE, E, SE above 900 masl • Vær oppmerksom også under skoggrensa da snøen dannet flak også der. Jeg vil tro noen skred kan løsne av seg selv mens Været står på som mest. Etter det må det sannsynligvis liten tb til.

• 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 • 3 - Large • Some steep slopes N, NE, E, SE above 1100 masl • Str mellom 1-1,5

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. • Easy to trigger • 2 - Medium • Some steep slopes NE, E, SE, S above 800 masl • Stadige påfyll av fokksnø i leheng som allerede har tykke lag med fokksnø.