Avalanche warning for region Tromsø Thursday 28.03.2019

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Easy to trigger • 2 - Medium • N, NE, NW above 300 masl • Stor vindtransport til lesider. Stort skred i nærområdet.

Avalanche Problems

• Wet 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. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, NE, E, SE, S above 200 masl

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • The weak layer collapses easily and clean (easy propagation). A big and identifiable crystal in the weak layer. • Difficult to trigger • Possible • 3 - Large • Many steep slopes N, NE, E, SE, S, SW, W, NW

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 • 3 - Large • Some steep slopes N, NE, E, W, NW above 200 masl • mulig flere plasser da det er mye vær nå, med mange lokale vindretninger

• 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. The overlying slab is soft. • Easy to trigger • 3 - Large • Some steep slopes N, NE, E, W, NW above 200 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. • Easy to trigger • 3 - Large • Some steep slopes E, SE, S, SW above 200 masl • skred str pga det relativt store snøfallet som er kommet på kvaløya

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. • Difficult to trigger • 1 - Small • Some steep slopes NE, E, SE above 200 masl • På dette stedet var overliggende lag myke, på mer utsatte steder vil overliggende lag være hardere. Forventer at snøtransporten vil fortsette å bidra til dette skredproblemet. Fortsatt mye tilgjengelig snø i terrenget.

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • Unlikely • 3 - Large • Many steep slopes N, NE, E, SE, S, SW, W, NW above 0 masl • Kantkorn over skare, 1,5-2mm. Ligger under hardt lag med fokksnø.

• 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 • Possible • 3 - Large • Many steep slopes N, NE, E, SE, S, SW, W, NW above 0 masl • Kantkorn under skaren er kommet lengre i oppbyggingen. 2-3mm. Det er i dette laget det oppstår brudd ved lille blokktesten, Q3.