Avalanche forecast

Nord-Troms

NVE
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Avalanche danger

All elevations
2 · Moderate
Out of date — this forecast expired 5 months ago. You’re viewing past conditions, not the current bulletin.

Highlights

Locally unstable conditions. As there is limited snow available for transport, significant drifting and the formation of large slabs are not expected. Especially in north-facing terrain, pockets of faceted crystals exist high in the snowpack, and where these pockets are present, the risk of triggering avalanches is greatest.

Be extra alert to the danger of cornice collapses. It is very difficult to predict when cornices will break — keep a safe distance! Cornice failures can trigger large avalanches on deeper weak layers that are otherwise very difficult to affect.

Avalanche problems

  • Persistent weak layers

    • Above 400 m

Tendency

Sun and mild temperatures can trigger avalanches. In a few places size 2 avalanches cannot be ruled out.

Be extra alert to the danger of cornice collapses. It is very difficult to predict when cornices will break — keep a safe distance! Cornice failures can trigger large avalanches on deeper weak layers that are otherwise very difficult to affect.

In north-facing terrain high in the mountains, pockets of faceted crystals exist high in the snowpack under wind slabs, and where these pockets are present, it can be easy to trigger avalanches.

Avalanche Activity

Locally unstable conditions. As there is limited snow available for transport, significant drifting and the formation of large slabs are not expected. Especially in north-facing terrain, pockets of faceted crystals exist high in the snowpack, and where these pockets are present, the risk of triggering avalanches is greatest. Be extra alert to the danger of cornice collapses. It is very difficult to predict when cornices will break — keep a safe distance! Cornice failures can trigger large avalanches on deeper weak layers that are otherwise very difficult to affect.

Vinden de siste dagene kan ha dannet ferske fokksnøflak i enkelte leheng i fjellet. Enkelte steder, særlig i nordvendt terreng, ligger lommer med kantkorn høyt i snødekket. Der disse lommene med kantkorn finnes vil risikoen for å løse ut skred være størst.

Vær ekstra oppmerksom på faren for skavlbrudd. Det er svært vanskelig å forutsi når skavler knekker - hold god avstand! Skavlbrudd kan løse ut skred i fokksnøen, eller store skred på dypere svake lag som ellers er svært vanskelig å påvirke.

Snowpack Structure

I skogen og opp til ca 300 moh er snøen påvirket av høye temperaturer, sol og er stort sett smelteomvandlet. Høyere til fjells er snøen stedvis ubunden, stedvis myke, tynne flak, spesielt i nord- og vestvendt terreng. Kantkorn finnes trolig i spredte lommer under fokksnø i høyden. Fersk fokksnø kan inneholde sjikt med rim og kantkorn.

Eldre svake lag av kantkorn som ligg dypt i snøen er generelt vanskelige å påvirke. Men ved svært stor belastning, typisk skavlbrudd er det mulig med store skred på disse lagene.

Bulletin data: Norwegian Water Resources and Energy Directorate (NVE), varsom.no (NLOD)

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