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Avalanche warning for region Jotunheimen Thursday 05.12.2019

Danger level 3 - Considerable avalanche danger

Published:
The snowpack is very unstable. Avoid areas with wind-deposited snow. It is also possible to trigger avalanches in a persistant weak layer in old snow found in bowls and gullies.

Avalanche problems

Wind drifted snow (slab avalanches)

You can very easily trigger avalanches on some steep slopes. Avalanches can get large enough to bury or even kill you (size 2).

Buried weak layer of new snow

Persistent weak layer (slab avalanches)

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

Buried weak layer of faceted snow above a crust
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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 5. December 2019

Vind og nedbør siste døgn preger snøoverflata og snøen har blitt fuktet helt opp mot 1000-1200 moh. Stedvis finnes det noe skare i overflaten. Over 1000-1200 moh ligger det nysnø. Dypere i snøen ligger det gamle fokksnøflak. Det er mindre snø enn normalt vest i regionen og omtrent som normalt i øst.

Tynt snødekke og kaldt vær i november har gitt kantkorn ved bakken. Noen steder også kantkorn høyere i snødekket.

Observasjon fra Vang på onsdag viser at det finnes kantkornlag oppover i snødekke som er lett å påvirke.

Mountain weather

Wednesday 4. December 2019

5 mm precipitation, up to 10 mm in the most exposed areas. Gale from southwest. -6 °C to -1 °C at 1800 m a.s.l. Partly cloudy.

Thursday 5. December 2019

20 mm precipitation, up to 45 mm in the most exposed areas. Gale from southwest, changing to moderate gale from the southwest during the afternoon. -8 °C to -3 °C at 1800 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

Vind og nedbør gjør at det fortsatt er sannsynlig med naturlig utløse skred i fokksnøen. Det er stedvis også lett å utløse skred i kantkornlagene som ligger dypere i snøen. Enkelt stor skred kan ikke utelukkes i områdene som samler mest fersk fokksnø.
Avalanche danger scale Important information for ski touring
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