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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Trollheimen Tuesday 19.12.2017

Danger level 2 - Moderate avalanche danger

Published:
Increasing temperatures leads to higher avalanche danger. A weak layer deep in the snow pack can now become more active and increase the chance for natural released avalanches.

Avalanche problems

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

Wet snow (loose snow avalanches)

You can easily trigger avalanches on some steep slopes. Avalanches are relatively harmless to people, but can knock you off balance. Can be dangerous close to terrain traps. (size 1)

Loose snow

Persistent weak layer (slab avalanches)

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

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)

Monday 18. December 2017

Det er laussnø tilgjengeleg for vindtransport, mest i ytre strok. Stor variasjon ellers i overflata mellom laus og uttørka snø i skog, og vindpakka i ulike former i høgda. Rygg og toppar er avblåst og det ligg eldre fokksnøflak i leområder, mest i Ø. Snøgrensa ligg mellom 0-200 moh.

Det foregår oppbyggande omvandling rundt skarelag og i lausere lag under fokksnøen. Men desse lagene blir foreløpig blir ikkje rekna som aktive. Det er også observert mykje rim i snøoverflata fredag, dette kan være snødd ned laurdag.

De siste dagene er det ikke observert noen skredaktivitet.

Observasjoner fra Oppdal fredag viser tørt, spenningslaust og "utfrosset" snødekke. Laurdag er det komme litt nysnø med lite vind. Observasjon søndag på tørre laussnøskred i bratt terreng.

Mountain weather

Monday 18. December 2017

6-10 mm precipitation. Gale from west, changing to fresh breeze from the southwest during the afternoon. -7 °C to -1 °C at 1400 m a.s.l. Cloudy.

Tuesday 19. December 2017

5 mm precipitation, up to 10 mm in the most exposed areas. Strong breeze from southwest. -2 °C to 6 °C at 1400 m a.s.l. Partly 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

Regn og mildvær til topps kan gi kortvarig fare for våte skred. Fukt og varme trenger ned i svakare lag i snødekket og kan svekke dei slik at dei går i brudd av seg sjølv. I låglandet kan det gå våte laussnøskred, i høgda våte flakskred. Faregraden blir vurdert til 2- moderat.
Avalanche danger scale Important information for ski touring
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