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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Hallingdal Friday 20.12.2019

Danger level 3 - Considerable avalanche danger

Published:
Be careful in areas with fresh windloaded snow. Avoid lee areas where a persistent weak layer can be hidden in the snow pack. Avalanches are triggered most easily where the snow pack is thin, typically close to ridges and on convex formations.

Avalanche problems

Wind drifted snow (slab avalanches)

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

Buried weak layer of new snow

Persistent weak layer (slab avalanches)

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

Buried weak layer of faceted snow beneath 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 19. December 2019

Snøoverflata er no stort sett vindpåverka etter vind onsdag. Det meste av terreng er dekka av snø, men det er mest fokksnø i leområder. I skogen finst det laus snø

Det finst vedvarande svakt lag av kantkorn i snødekket som har vist dårlege eigenskapar. Vedvarande svakt lag av kantkorn ved bakken har stor utbreiing.

Onsdag vert det observert overflaterim

Mountain weather

Thursday 19. December 2019

10 mm precipitation, up to 20 mm in the most exposed areas. Strong breeze from southeast, changing to fresh breeze from the southeast during the evening. -10 °C to -5 °C at 1400 m a.s.l. Cloudy.

Friday 20. December 2019

8-12 mm precipitation. Breeze from east, changing to fresh breeze from the southeast during the evening. -6 °C to 0 °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

Vind og nedbør i form av snø vil føre til pålagring av fersk fokksnø i leheng. Fokksnøen frå i går treng også tid for å stabilisere seg. Der ein får regn på snøen kan det gå naturleg utløyste skred. Det finst vedvarande svake lag i snødekket og ved bakken som kan påverkast der snødekket er tynt eller mjukt, noko som er mest sannsynleg i skoggrensa.
Avalanche danger scale Important information for ski touring
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