Avalanche warning for region Voss Thursday 11.02.2021

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 • SE

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Over one meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • SE

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • A big and identifiable crystal in the weak layer. • Very difficult to trigger • 1 - Small • Some steep slopes E above unknown masl • Det finnes svake lag, men faren er der det ligger vindtransportert snø. Og lite snødekke. Kun observasjon på østlig side.

Avalanche Problems

• 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.

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • 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 • 1 - Small • E between unknown masl and unknown masl

Avalanche Problems

• Loose dry avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Easy to trigger • S, SW • Tydlig bundet lag over og under det svake laget beskrevet i testen. Ved litt belastning kom drønn fra det svake laget.

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. A big and identifiable crystal in the weak layer. • Difficult to trigger • Unknown • NE, E • Øverste 10 cm er DF, resterende 40 cm er fast. Underliggende snø er fast.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 3 - Large • Many steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl • Denne vurderingen tar utgangspunkt i svakt lag på LBT langt nede i dekket. Dette laget skal mye til å påvirke, mens det finnes kantkorn lengre opp som ligger under tynne flak. I vestlige heng med mer fokksnø i toppen vil det være sannsynlig å løse ut skred med liten tilleggsbelastning

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. A big and identifiable crystal in the weak layer. • Difficult to trigger • NE, E • Øverste lag 10cm, er mykt DF. Underliggende snø er hardt.

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. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • Unknown • E

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. • Unknown • SE between 900 masl and unknown masl

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 S, SW, W, NW above 800 masl • Nedføyka rim og delvis nedbrutt snø under delvis hard fokksnø. Det er og små kantkorn innimellom. Der snødekket er hardt nok, men ikkje for hardt er det lett å løyse ut fokksnø flak. Vanskelig å anslå skredstørrelse, men tipper str 2 til kanskje 3.

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • Difficult to trigger • 3 - Large • Few steep slopes N, NE, E, SE, S, SW, W, NW above 600 masl

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. A big and identifiable crystal in the weak layer. • Easy to trigger • Unknown • Some steep slopes • Kankornlaget er i alle himmelretninger. Avhengig av vindtransportert snø over

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. A big and identifiable crystal in the weak layer. • Easy to trigger • Unknown • Some steep slopes N, NE, E, SE, S, SW, W, NW • Kantkornlag i alle sider, varierende dybde, vindpåvirkning som avgjør om dette blir et problem.

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. A big and identifiable crystal in the weak layer. • Easy to trigger • Unknown • Some steep slopes • Kantkorn laget finnes sannsynligvis over alt i området. Vindtransportert snø inn i le soner, over dette laget vill kunne skape ett skredproblem

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. A big and identifiable crystal in the weak layer. • Easy to trigger • Unknown • Some steep slopes N, NE, E, SE, S, SW, W, NW • Kantkornlaget finnes i alle himmelretninger. Det som er avgjørende er om det er fokksnø eller vindtransportert snø over.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within half a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Very difficult to trigger • Some steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl • - ingen stabilitetstest gjennomført, men snøpakken er hard og virker solid.

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within half a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Difficult to trigger • Some steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath 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, S, SW, W, NW above 1000 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Over one meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • Unknown • Few steep slopes SW above 1200 masl • Snøprofil vil variere fra sted til sted lokalt. Ikke gjort snøprofil i brattere terreng på samme sted.