Avalanche warning for region Indre Sogn Saturday 07.01.2023

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. • Spontaneous release • 3 - Large • Some steep slopes N, SW, W, NW above unknown masl

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within 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. • Spontaneous release • 3 - Large • Few steep slopes N, NE, E, SE, S, SW, W, NW above unknown 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. • Easy to trigger • 2 - Medium • Some steep slopes above 600 masl • Obstur opp til 750, overliggende flak er ikke mykt som i myke fokksnøflak, men mer delvis vindpåvirka flak som er lett å løse ut. skredstørrelse mellom 1 og 2. På grunn av kraftig vind i fjellet er nok flak over 750 betraktelig hardere, og skred kan bli større. NB, valgt skredproblem representerer ikke regionen som helhet - og faregrad.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl • Problemet som ble funnet i snøprofil en og med tester gikk på nedsnødd overflater, anser dette problemet som lokalt eller med mindre utbredelse. Hovudproblemet er ansett til å være svakt lag ved bakken.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 800 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 600 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. • Difficult to trigger • 1 - Small • Few steep slopes N, NE, NW above 1200 masl • Der vinden har lastet inn snø i går er det mulig å løse ut skred i fokksnøen, men dette virker svært lokalt og bryter svært ujevnt

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • 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 700 masl • Drønn både nede i skogen og oppe på fjellet viser at det svake laget er aktivt de fleste steder på fjellet. Mangel på flakstørrelse vil begrense skredstørrelsen og utløsbarheten vil påvirkes svært mye av underlaget. Kan påvirkes der snødekket er tynt

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Over one meter • The weak layer collapses easily and clean (easy propagation). A big and identifiable crystal in the weak layer. • Very easy to trigger • 2 - Medium • Many steep slopes N, NE, E, SE, S, SW, W, NW above 700 masl • Får kollaps av kantorn ved bakken stort sett overalt hvor jeg gikk fra 700moh.

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Easy to trigger • 2 - Medium • Few steep slopes N, W, NW above 1000 masl • Sjiktovergang i fokksnø. Antar at det finnes over skoggrensa i NV heng der vinden har lagt igjen fokksnø.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Over one meter • 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 800 masl • Kan fjernutløysast

• Dry slab avalanche • Buried weak layer of faceted snow beneath 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. • Easy to trigger • 2 - Medium • Few steep slopes N, W, NW between 1400 masl and 800 masl • Skredproblemet er kun gjeldande mellom tregrensa opp til der vi finn skarelag i snødekket etter mildver 20 des. 1400-1500moh? I og med at det ikkje var så mykje snø når skarelaget kom vil nok skred ikkje blir veldig store og terrenget sette begrensningar. Vil og varriere kor djupt det ligg og kor lett det er å påverke. Her var det kun gårsdagens SØ som var laste inn, og det låg difor ikkje så djupt begravd.

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. • Easy to trigger • 2 - Medium • Some steep slopes NW above 700 masl

Avalanche Problems

• 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. • Easy to trigger • 2 - Medium • Few steep slopes N, W, NW above 1200 masl

• Dry slab avalanche • Buried weak layer of faceted snow beneath 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. • Easy to trigger • 3 - Large • Few steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl • Det vi fant ved testing i snøprofilet 1350 moh var nedsnødd overflaterim. Dette trur vi ikkje har stor utbreiing. Gruppa som gravde rett ved sida fant ikkje noko overflaterim og vi gravde i ei beskytta side som kan a teke vare på rimen. Generelt trur eg kantkornet framleis er eit større problem og det var det det drønna i på veg opp. Snøen i overflata var så ubunden at fokksnøproblematikken ikkje var så framtredende.

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). The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 1200 masl

• 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. • Difficult to trigger • 2 - Medium • Few steep slopes N, SW, W, NW above 1200 masl • Varierende hardhet på fokksnø. I hovedsak lite bundet, men der vinden har tatt kan fokksnøen være mer bundet.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 800 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above unknown masl • Vedvarende svakt lag i høyden er hovedproblemet på denne plassen. Er meldt om fokksnø i varselet, men det er ikke et problem her.

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 • 1 - Small • Some steep slopes N, SW, W, NW above 900 masl • både litt usikkert utløsbarhet og størrelse. men fikk ECTP i sjiktovergangen i fokksnøen så valgte å ta det med som skredproblem

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • 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 700 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 800 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 800 masl • Det svake laget er rett mot bakken, så det må til både jevn terreng og et nok sammenhengende flak for å få noen størrelse på skredet. Men også relativt myke flak virker kunne propagere bra i enkelte heng.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • N, NE, E, SE, S, SW, W, NW above 700 masl

Avalanche Problems

• Dry slab avalanche • A big and identifiable crystal in the weak layer. • Easy to trigger

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Some steep slopes SW, W, NW above 600 masl