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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Indre Troms Thursday 27.12.2018

Danger level 3 - Considerable avalanche danger

Published:
Conditions are tricky. Be careful in lee areas with recently formed wind slabs. A persistent weak layer is present and remote triggering is possible.

Avalanche problems

Persistent weak layer (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). Remote triggering is possible.

Buried weak layer of faceted snow near surface

Persistent weak layer (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). Remote triggering is possible.

Buried weak layer of surface hoar

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)

Wednesday 26. December 2018

Siden helgen er det komme ca 20 cm med nysnø, mest vest i regionen sammen med noe vind fra SV.

Det er flere skarelag i det gamle snødekket.

Det er generelt lite snø i terrenget under ca 7-800 moh og snøen i lavlandet er fuktig.

Snøen er fortsatt ujevnt fordelt i terrenget.

Et lag av kantkorn har utviklet seg videre under skarelaget fra ca 600 moh og til topps.

Rimkrystaller ble observert på overflaten fra ca 100 moh til ca 600 moh (opp til skoggrensen) før nysnøen kom. Utbredelsen noe større nord i regionen.

Mountain weather

Wednesday 26. December 2018

3-7 mm precipitation. Strong breeze from northwest, changing to breeze from the south during the afternoon. -10 °C to -4 °C at 1100 m a.s.l. Partly cloudy.

Thursday 27. December 2018

6 mm precipitation, up to 12 mm in the most exposed areas. Breeze from southeast, changing to breeze from the southwest during the afternoon. -9 °C to -3 °C at 1100 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

Nysnø i kompaniskap med vind danner ustabile fokksnøflak i leformasjoner i N-NV som ligger oppå vedvarende svake lag av kantkorn. Over skoggrensen vil det lett kunne løses ut store skred.
Under skoggrensen vil fokksnøen kunne legge seg på områder med overflaterim og være svært lette å løse ut.
Avalanche danger scale Important information for ski touring
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