Avalanche warning for region Indre Troms Saturday 15.02.2020

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. • Easy to trigger • 2 - Medium • Few steep slopes N, SW, W, NW above 800 masl • Vind og snøfokk i høyden på utsatte steder, vinden har løyet mot kvelden, avtagende skredfare

Avalanche Problems

• Dry slab avalanche • Difficult to trigger • Unknown • SE, S, SW between unknown masl and unknown masl • Ved tilleggsbelastning kan man påvirke flere av skarelagene nedover i snødekke, ved tynt snødekke og stor tilleggsbelastning i kombinasjon med mer ideell helningsgrad kan man trigge brudd lenger ned i snødekket med påfølgende propagering.

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. 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, S, SW, W, NW above 300 masl

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • The collapsing weak layer is thin < 3 cm. • Easy to trigger • 1 - Small • SW 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. • Difficult to trigger • 2 - Medium • Many steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl

Avalanche Problems

• Dry slab avalanche • Poor bonding between crust and overlying snow • Within half a meter • The collapsing weak layer is thin < 3 cm. • Easy to trigger • Few steep slopes N, NE, E, SE, S, SW, W, NW above 400 masl

Avalanche Problems

• Buried weak layer of faceted snow above a crust • Within half a meter • The collapsing weak layer is thin < 3 cm.

Avalanche Problems

• Dry slab avalanche • Poor bonding between crust and overlying snow • Within half a meter • The collapsing weak layer is thin < 3 cm. • Difficult to trigger • 1 - Small • NW above unknown masl

• 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 • 2 - Medium • above unknown masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within half a meter • Difficult to trigger • 3 - Large • between unknown 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. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • S between 500 masl and unknown masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within half a meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 2 - Medium • Few steep slopes N, W, NW between 400 masl and unknown masl

Avalanche Problems

• 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 • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW between unknown masl and 300 masl • Det svake laget finnes også igjen i andre eksponeringer (NV) under graving av hurtigpiter, funnet ved bruk av lille blokktest. Store fasetter under det samme skarelaget.

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. • N, NE, NW above unknown masl