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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Sør-Troms Sunday 30.12.2018

Danger level 3 - Considerable avalanche danger

Published:
Locally unstable conditions due to wind slabs in lee areas. Persistent weak layers may also be triggered where the snow cover is thin.

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 near surface
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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 29. December 2018

Tykkelsen på snødekket varierer mye. De siste dagene er det kommet 30-40 cm nysnø med kraftig vind i fjellet. Det ligger mest snø i Ø-vendte leformasjoner.

Under skoggrensa er snøoverflaten våt opp til ca 400 moh grunnet regn.

Mildvær opp til 5-600moh før jul, og etterfølgende kulde gjorde at det dannet seg kantkorn under skare og rim oppå. Mildværet siste dagene har trolig ødelagt dette laget under 300 moh. Vi mottar gjerne observasjoner i regObs som bekrefter eller avkrefter disse lagene.

Det er ikke observert skredaktivitet de siste 3 døgn

Mountain weather

Saturday 29. December 2018

14-18 mm precipitation. Fresh breeze from southwest, changing to strong breeze from the north during the afternoon. -11 °C to -2 °C at 1100 m a.s.l. Cloudy.

Sunday 30. December 2018

6 mm precipitation, up to 12 mm in the most exposed areas. Fresh breeze from northwest, changing to strong breeze from the southwest during the evening. -13 °C to -6 °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

Litt påfyll av nysnø i kombinasjon med kuling danner ferske fokksnøflak.

Utvis varsomhet der fokksnøen kan ligge oppå nedføyka overflaterim og/eller kantkorn. De vedvarende svake lagene er særlig utbredt opp til 600 moh, som er hvor høyt mildværet før jul rakk.
Avalanche danger scale Important information for ski touring
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