Avalanche warning for region Trollheimen Wednesday 15.02.2023

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • 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. • Difficult to trigger • 2 - Medium • NE, E, SE, S above 1200 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. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • 1 - Small • Few steep slopes NE, E, SE above 1200 masl • Overliggende fokksnøflak varierer i utbredelsen og på dette stedet var det manglende utvikling men var godt utviklet mange steder i nærheten.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • A big and identifiable crystal in the weak layer. • Very difficult to trigger • 1 - Small • Few steep slopes NE, E, SE, S, SW above 1100 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. • Very difficult to trigger • 2 - Medium • Few steep slopes above unknown masl • Kantkornlag i gammelt snødekke. Utbredelse usikkert men sannsynligvis begrenset til mindre områder høyt oppe.

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • 1 - Small • Many steep slopes E, SE, S above 1100 masl • Skredproblemet kan være til stede i andre himmelretninger

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Very difficult to trigger • 1 - Small • Few steep slopes N, NE, E, SE, NW above 1200 masl

• Dry slab avalanche • Buried weak layer of new snow • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Very difficult to trigger • 2 - Medium • Few steep slopes N, NE, E, SE, NW above 1200 masl • usikker på utberedelse

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Few steep slopes NE, E, SE above 1400 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • N, NE, E, SE above 1200 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within a meter • A big and identifiable crystal in the weak layer. • Very difficult to trigger • 2 - Medium • E, SE, S above 1200 masl • Fokksnø ifra snø og vind i helgen har som forventet bundet seg godt og er svært vanskelig å få til brudd, ingen forplantningsevne hvor vi var. Vanskelig å se for seg at det forplanter seg og danner større flak nå. Forventet utifra gunstig temperatur. Obs stor temp. Gradient i øvre sjiktet og potensial for oppbyggende prossesser

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Few steep slopes

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within a meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 3 - Large • Many steep slopes N, NE, E, SE, S above 1000 masl

Avalanche Problems

• Dry slab avalanche • 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 SE above 1100 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 overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Few steep slopes E, SE, S above 1100 masl

• Loose wet avalanche • Loose snow • Easy to trigger • 1 - Small • Few steep slopes N, NE, E, SE, S, SW, W, NW below 1000 masl