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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Sør-Troms Saturday 18.12.2021

Danger level 3 - Considerable avalanche danger

Published:
Fresh wind slab will be touchy in many wind-sheltered slopes. Avalanches can be large enough to bury a person. Hard slabs on deeper weak layers can be triggered in a few sheltered locations, especially when they have got loading in the last few days.

Avalanche problems

Wind drifted snow (slab avalanches)

You can easily trigger avalanches on many steep slopes. Avalanches can get large enough to bury or even kill you (size 2).

Poor bonding between layers in wind deposited 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

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)

Friday 17. December 2021

Det regnet høyt til fjells på fredag. Snøoverflaten har blitt fuktig hele veien. Kraftig regn de siste dagene har gjennomfuktet snødekket opp til 700 moh.
Vinden har preget snøoverflaten og -fordelingen i høyden. Siste dagers nysnø har dannet flak som har lagt seg over eldre, harde fokksnøflak.

Under den harde fokksnøen og ved bakken ligger det svake lag av kantkorn. Disse lagene ventes å være borte nå under 500-700 moh på grunn av regn og milde temperaturer de siste dager. Høyere til fjells er stabiliteten og utbredelsen mer usikker.

Mountain weather

Friday 17. December 2021

9 mm precipitation, up to 16 mm in the most exposed areas. Precipitation as rain. Strong breeze from southwest. -2 °C to 3 °C at 700 m a.s.l. Cloudy.

Saturday 18. December 2021

18 mm precipitation, up to 30 mm in the most exposed areas. Rain up to 600 m a.s.l Saturday night. Strong breeze from west. -3 °C to 2 °C at 700 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

Snøskredfaren øker i høyden. Kraftig snøfall og vind vil gi ustabile fokksnøflak i mange leheng. Disse vil være lette å løse ut og enkelte skred kan løsne naturlig. Det kan fortsatt være svake lag av kantkorn dypere i snødekket. Disse ligger under harde flak og er vanskelig å påvirke.

Under omtrent 700 moh venter vi at snødekket er vått og lite lagdelt og skredfaren vurderes som liten.
Avalanche danger scale Important information for ski touring
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