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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Trollheimen Sunday 21.01.2024

Danger level 3 - Considerable avalanche danger

Published:
The danger increases when the wind picks up. Avoid areas with wind deposited snow, typically behind ridges, ribs and in gullies. A persistent weak layer of facets may be triggered, especially where the snow cover is thin. It can be easy to trigger large avalanches an naturally triggered avalanches can occure.

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).

Buried weak layer of new 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 above a crust

New 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
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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)

Saturday 20. January 2024

Det ligger mye snø i terrenget etter en uke med snøbyger.
Vindøkning lørdag har gitt flakdannelser over tregrensen. Varierende hardhet etter som hvordan vinden har tatt.

Det finnes svake lag av kantkorn ved bakken og rundt mildværsskaren fra desember. Kantkorn over mildværsskaren vurderes som mest problematisk.

Problemet finnes hovedsakelig i indre del av regionen.

Natt til torsdag ble det observert rim i overflaten i Sunndal.

Mountain weather

Saturday 20. January 2024

Little to no precipitation. Breeze from southwest, changing to strong breeze from the southwest during the afternoon. -27 °C to -6 °C at 1400 m a.s.l. Partly cloudy.

Sunday 21. January 2024

Little to no precipitation. Strong breeze from south. -12 °C to -2 °C at 1400 m a.s.l. Partly 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

Fortsatt kraftig vind fra sør opprettholder problemet med stor snøtransport i fjellet. Det kan være svært lett å løse ut skred i leområder og skred kan løsne av seg selv. Skred kan bli store.

Fjellsider og formasjoner vendt mot nord og øst vil være mest utsatt, men vær obs på lokale forskjeller der terrenget styrer vinden.

I indre deler av regionen finnes det i tillegg vedvarende svake lag dypt i snødekket. Det skal trolig mye til å påvirke dette nå pga mye snø over, men skred som løsner dypt i snødekket kan bli store.

I lavere områder kan stigende temperatur gi fare for løssnøskred i bratt terreng der snøen er ubunden.
Avalanche danger scale Important information for ski touring
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