Avalanche warning for region Hallingdal Wednesday 04.01.2023

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within half a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • 1 - Small • Some steep slopes N, NE, E, SE, S, SW, W, NW above 1100 masl • Store lokale variasjoner i utbredelse av problemet. Siste snøfalll har foreløpig kun i begrenset omfang fokket seg i N/N-Ø over tregrense. Påløpende vind gjennom natten har mye snø å flytte på.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • 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 above 900 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. • Very easy to trigger • 1 - Small • Many steep slopes N, NE, E, NW above 900 masl • Foreløpig forventet små skred pga mykt overliggende lag

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 • 1 - Small • Many steep slopes • Nedsnødd overflaterim. Per nå kun lett bunden snø over, men med økende snøtransport vil problemet sannsynligvis bli større.

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The collapsing weak layer is thin < 3 cm. • Difficult to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 900 masl • Delvis nedbrutt nysnø som stedvis er nedføyket av bunden snø.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 1 - Small • Many steep slopes N, NE, E, SE, S, SW, W, NW above 1100 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 1 - Small • Many steep slopes N, NE, E, SE, S, SW, W, NW above 1100 masl

Avalanche Problems

• Buried weak layer of new snow • Within half a meter • The overlying slab is soft.

• Dry slab avalanche • A big and identifiable crystal in the weak layer. • 2 - Medium

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Easy to trigger • 2 - Medium • Few steep slopes N, NE, E, SE, S, SW, W, NW above 900 masl • Kan være vanskelig å løse ut i noen heng også, men jeg tror lett å løse ut i få blir mest aktuelt og sannsynlig.

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 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, S, SW, W, NW above 900 masl • Kantkornlag fins i bunn av snødekket, stort sett over alt. Over kantkornlaget finner vi fokksnøflak av varierende tykkelse, tykkest i heng mot øst, og sidelasta søkk mot sør og nord.