Avalanche warning for region Jotunheimen Saturday 29.02.2020

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 • 3 - Large • Many steep slopes N, NE, NW above 1000 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • The collapsing weak layer is thin < 3 cm. 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 between 1300 masl and 800 masl • Tilstede ved tregrensen +-

• 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. • Difficult to trigger • 2 - Medium • Some steep slopes NW above 1000 masl • Ikke sett dette tidligere, og bare gravd i NV helling. Antar at det har blitt dannet i løpet av siste uke. Det var to lag, begge innen en halv meter fra overflaten.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • Difficult to trigger • N, W, NW between unknown masl and unknown masl • CT som gir utslag nede i smeltepakka. Kan være påvirket av ujevn steingrunn som underlag. Ny CT ga ikke utslag.

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • The overlying slab is soft. • Difficult to trigger • N, W, NW between 2500 masl and unknown masl

Avalanche Problems

• Loose snow

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • The overlying slab is soft. • Very difficult to trigger • 1 - Small • Some steep slopes NE, E between unknown masl and unknown masl • På nåværende tidspunkt er den ubundede fokksnøen høyt oppe i snødekke og laget er tynt. Store skred er usannsynlige. Dersom vinden transporterer nysnøen som har kommet nå til lesider vil vi ha et betydelig større skredproblem inntil lagene sintrer og stabiliseres.

Avalanche Problems

• Loose snow • S above 1900 masl

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Difficult to trigger • 2 - Medium • Few steep slopes E between 1400 masl and unknown masl

Avalanche Problems

• Poor bonding between layers in wind deposited snow • Within half a meter • The overlying slab is soft. • Difficult to trigger • 1 - Small • N, NE, E, W, NW between 1500 masl and 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, NW between 2500 masl and 1000 masl • Vanskelig å avgrense hvor lehengene er grunnet kraftig turbulente vindforhold

Avalanche Problems

• Loose snow • SE not between 1700 masl and 0 masl

Avalanche Problems

• Dry slab avalanche • The collapsing weak layer is thin < 3 cm. • Difficult to trigger • 3 - Large • Many steep slopes N, NE, E, SE between 2000 masl and 1200 masl

Avalanche Problems

• Poor bonding between layers in wind deposited snow • Within half a meter • The overlying slab is soft. • Very difficult to trigger • Some steep slopes E between 1400 masl and unknown masl

Avalanche Problems

• 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 • Difficult to trigger • 2 - Medium • Some steep slopes E between 1400 masl and unknown masl

Avalanche Problems

• Poor bonding between layers in wind deposited snow • Within half a meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 1 - Small • Some steep slopes NE, E, SE between unknown masl and unknown masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • The weak layer collapses easily and clean (easy propagation). 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 above 800 masl

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • 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. • Difficult to trigger • 2 - Medium • Some steep slopes NE, E, SE, S above unknown masl