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Avalanche warning for region Trollheimen Thursday 20.02.2020

Danger level 2 - Moderate avalanche danger

Published:
Be careful in lee areas with wind deposited snow, typically behind ridges, ribs and in gullies. Especially where the wind deposited slabs are thin or soft, a slab avalanche is easier to trigger here.

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).

Buried weak layer of new snow

Wind drifted snow (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).

Poor bonding between layers in wind deposited snow
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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)

Wednesday 19. February 2020

Snøoverflaten består av fokksnø av varierende hardhet og skare. Ukas snøfall kom tidvis med kraftig vind, noe av snøen er fortsatt tilgjengelig for vindtransport. Det er mest snø i østlig sektor, der kan det også ha bygd seg opp store skavler. Rygger og vindutsatte partier er stedvis avblåst.

Kantkornlag oppå skare dypt i snødekket, men det for tiden ikke et skredproblem.

Mountain weather

Wednesday 19. February 2020

6 mm precipitation, up to 12 mm in the most exposed areas. Fresh breeze from west, changing to strong breeze from the south during the evening. -9 °C to -5 °C at 1400 m a.s.l. Partly cloudy.

Thursday 20. February 2020

4-8 mm precipitation. Moderate gale from south. -10 °C to -4 °C at 1400 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

Noe ny nedbør på ettermiddag i kombinasjon med kraftig vind kan flytte snø inn i nordlige heng og danne små fokksnøflak. Små mengder snø tilgjengelig for vindtransport, så eventuelle skred er ikke ventet større enn str. 2. På grunn av lave temperaturer vil stabilisering av den nye fokksnøen gå seinere. Eldre fokksnøflak i østlig sektor må også tas hensyn til.
Under mildværsgrensa kan små våte snøskred forekomme.
Avalanche danger scale Important information for ski touring
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