Avalanche warning for region Hallingdal Thursday 03.02.2022

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 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 NE, E, SE, S, SW above 1100 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 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 E, SE, S above 1200 masl • Stor opplasting i le hang. Svakt lag av nedføyket nysnø som propagerer lett.

Avalanche Problems

• 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. • E above unknown masl

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. A big and identifiable crystal in the weak layer. • Easy to trigger • 1 - Small • E, SE, S, SW above unknown masl • Flak av nysnø

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 NE, E, SE above 1200 masl • Flak av fersk fokksnø fra i natt, myke flak her på 1200 moh. Kan forvente større fokksnømengder og mer vindpakket lenger vest i regionen og høgere på fjellet. Der foregår pålagring fortsatt.

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 • Some steep slopes E, SE, S above 1200 masl

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Some steep slopes SE, S above unknown masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • 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 • Few steep slopes NE, E, SE above 1300 masl • Det er lett til svært lett å løse ut kantkornlaget lengre nede i snødekket der snødekket er tynt. Det må mest sannsynlig være fravær av skarelaget som forsvinner på ca. 1350 moh for å klare å påvirke kantkorlaget.

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 1100 masl • Varierende om vinden har tatt nok til at det har dannet seg fokksnøflak oppå nysnøen, eller om det overliggende laget er ubundet

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Difficult to trigger • 2 - Medium • Some steep slopes NE, E, SE above 1000 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Over one meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Few steep slopes E, SE, S above 1300 masl • Kantkorn ved bakken propagerer lett over 1300moh hvor skarelaget er fraværende og snødekket er tynt. Problemet finnes kun hvor det er gammel innføyket snø.

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 • 1 - Small • Some steep slopes N, NE, SW, W, NW above 1000 masl

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Few steep slopes N, NE, E, SE, S, SW, W, NW above 1300 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Easy to trigger • Few steep slopes above 1300 masl • Lett å løse ut der snødekket er tynt