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Avalanche warning for region Indre Sogn Friday 10.02.2023

Danger level 3 - Considerable avalanche danger

Published:
Big avalanches can release by themselves or be easy to trigger. Wind and storm slabs are the main problem at the beginning of the day, but wet snow can also become a problem as the temperatures rises later in the day.

Avalanche problems

Wind drifted snow (slab avalanches)

Avalanches may release spontaneously on some steep slopes. Avalanches can get large enough to bury a car or destroy a small house (size 3).

Poor bonding between layers in wind deposited snow

Wet snow (loose snow avalanches)

Avalanches may release spontaneously on some steep slopes. Avalanches can get large enough to bury or even kill you (size 2).

Loose snow

Persistent weak layer (slab avalanches)

You can trigger avalanches on a few steep slopes. Avalanches can get large enough to bury a car or destroy a small house (size 3).

Buried weak layer of faceted snow near the ground
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Below you can see a description of the current snow cover information and current weather forecast in the mountains. If your observations deviate greatly from what is described here, the warning will not necessarily apply either. Always make your own judgments or stay away from avalanche terrain.

Snow cover (in Norwegian)

Thursday 9. February 2023

Mildvær den siste uka fuktet snøoverflaten opp til ca.1000 moh.
Fra torsdag sank temperaturen, det kom nysnø i kombinasjon med kraftig vind.

Over mildværsgrensa er snøoverflaten preget av vind, og veksler mellom hard og myk fokksnø. Omkring skoggrensen ligger det stedvis tynn hinne av skare. På rygger og vindutsatte steder er det blåst ned på skare.

Over ca 1100-1200 moh viser observasjoner at kantkorn- og begerkrystalllaget ved bakken fremdeles er intakt, men ligger nå under mye kompakt snø som gjør det vansklig å påvirke.
Høyere i snødekket, over et gammel skarelag, har det også utviklet seg et kantkornlag enkelte steder, trolig i et belte fra ca.1100-1200 moh.

Torsdag ble det observert noen små våte skred.

Mountain weather

Thursday 9. February 2023

15 mm precipitation, up to 40 mm in the most exposed areas. Rain up to 500 m a.s.l Thursday night. Gale from southwest, changing to moderate gale from the west during the evening. -11 °C to -2 °C at 1400 m a.s.l. Partly cloudy.

Friday 10. February 2023

20 mm precipitation, up to 40 mm in the most exposed areas. Rain up to 1200 m a.s.l during the evening. Strong breeze from west. -12 °C to -3 °C at 1400 m a.s.l. Cloudy.

Advice

The bulletin is a planning tool and may differ from the actual situation. Always make your own evaluation. To be 100 % avalanche safe, avoid all avalanche terrain.

Avalanche risk assessment

Mye nysnø og vind vil danne ferske fokksnøflak som vil være lett å løse ut. Temperaturen vil stige utover ettermiddag/kveld som vil ha en forbigående svekking av de ferske flakene.
Enkelte steder har det vært observert kantkorn under et skarelag høyt i snødekket i et belte på ca. 1100-1200 moh. Dette kan føre til enkelte store naturlig utløste skred.

Regn på tørr snø vil kunne gi naturlig utløste våte skred.
Avalanche danger scale Important information for ski touring
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