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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Hallingdal Monday 20.02.2023

Danger level 3 - Considerable avalanche danger

Published:
Generally unstable conditions due to wind slabs in lee areas, naturally released large avalanches possible. Persistent weak layers may also be triggered where the snow cover is thin.

Avalanche problems

Wind drifted snow (slab avalanches)

Avalanches may release spontaneously 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 new snow

Persistent weak layer (slab avalanches)

You can 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 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)

Sunday 19. February 2023

Snøoverflata er for det meste hard etter sterk vind i høgfjellet. I formasjoner godt skjermet for vær fra V-NV kan det ligge mykere snø. I lavlandet har det vært mildvær og gjenfrysning.

Det har vært observert svakt lag av rim enkelte steder.

Vedvarende svake lag av kantkorn finnes både rundt skarelag og ved bakken. Det er observert et kantkornlag under fokksnø høgt i snødekket, senest lørdag litt vest for Geilo. Det er usikkerhet til utbredelsen av dette laget.

Mountain weather

Sunday 19. February 2023

2-6 mm precipitation. Rain up to 300 m a.s.l during the evening. Fresh breeze from northwest, changing to moderate gale from the northwest during the afternoon. -14 °C to -8 °C at 1400 m a.s.l. Partly cloudy.

Monday 20. February 2023

20 mm precipitation, up to 40 mm in the most exposed areas. Rain up to 1000 m a.s.l Monday night. Breeze from south, changing to gale from the west during renoon. -6 °C to -1 °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

Det er fare for naturlig utløste store skred i leområder mens været står på. Årsaken er mye nysnø og kraftig vind. Vinden kommer fra vestlig kant og gjør østvendt terreng mest utsatt. Det kan finnes et svakt lag av kantkorn høyt i snødekket, som vil være et ugunstig underlag for fersk fokksnø.

Det skal mye til for å påvirke vedvarende svakt lag ved bakken, men vær forsiktig i områder med tynt snødekke.
Avalanche danger scale Important information for ski touring
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