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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Tromsø Saturday 28.12.2019

Danger level 3 - Considerable avalanche danger

Published:
Strong winds, precipitation and increasing temperatures gives unstable snow conditions. Naturally released wet and dry slab avalanches are possible.

Avalanche problems

Wind drifted snow (slab avalanches)

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

Poor bonding between layers in wind deposited snow

Wet snow (slab avalanches)

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

Water pooling in/above snow layers

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
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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)

Friday 27. December 2019

Julaften kom det 2-5 cm nysnø i fjellet som har lagt seg over en generelt vindpåvirket eller avblåst overflate.

I starten av desember ble snødekket helt gjennomfuktet opp til ca. 500-700 moh, og etterfølgende kulde gav bærende skare mange steder.

Mellom skaren og gammel fokksnø er det noen steder observert et løst lag med små kantkorn. Det er også observert kantkorn og/eller rim mellom lag av fokksnø høyere i snødekket, og kantkorn under skarelag.

Mountain weather

Friday 27. December 2019

No precipitation. Breeze from south, changing to strong breeze from the southwest during the afternoon. -8 °C to -2 °C at 700 m a.s.l. Partly cloudy.

Saturday 28. December 2019

5 mm precipitation, up to 10 mm in the most exposed areas. Gale from southwest. -5 °C to 3 °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

Kraftig vind i kombinasjon med nedbør ventes å gi ustabil fokksnø i leområder i høyden, og enkelte naturlig utløste skred kan forekomme. Det ventes stigende temperatur utover dagen, og regn på ferske fokksnøflak kan gi naturlig utløste våte skred, særlig om kvelden.

Vær oppmerksom på at eldre fokksnøflak noen steder kan ligge over et vedvarende svakt lag av kantkorn. Det virker nå vanskelig å løse ut skred i dette laget, men evt skred kan bli store.
Avalanche danger scale Important information for ski touring
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