Avalanche warning for region Tromsø Friday 21.02.2020

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Spontaneous release • 2 - Medium • Few steep slopes E

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. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, NW below 200 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Over one meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Very difficult to trigger • 3 - Large • Many steep slopes N, NE, E, SE, S, SW, W, NW above 500 masl • Svakt lag med opp mot 2mm store kantkorn på 110cm nede i snødekket. Meget vanskelig å påvirke.

• 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 • Few steep slopes E above 900 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. • Difficult to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S above 500 masl • Evt. lett å løse ut i få bratte heng.

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. • Difficult to trigger • 2 - Medium • N, NE, E, SE above 300 masl

• Dry slab avalanche • Poor bonding between crust and overlying snow • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. • Easy to trigger • 2 - Medium • Few steep slopes N, NE, E, SE above unknown masl • Opplevde dette i noen isolerte heng

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • Difficult to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW not between 1000 masl and 400 masl • De stedene jeg fant lett bundet nysnø var det vanskelig å løse ut flak annet enn i "triangelet" i lappekastet hvor snøen ble isolert og fikk press ovenfra. Få utglidninger i brattere travers der hardere snølag under var til stede. Fokksnøen finnes på isolerte plasser og ikke over hele fjellet.

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. • Difficult to trigger • 2 - Medium • Some steep slopes E, SE, S, SW above 300 masl