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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Tromsø Saturday 09.12.2017

Danger level 2 - Moderate avalanche danger

Published:
Use caution on slopes recently loaded with wind slabs. Several layers of facets and surface hoar are persistent and widespread in the snow pack. These layers can be triggered by high additional loads and propagate into size 3 avalanches.

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

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 beneath 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 8. December 2017

I løpet av uken har det kommet 40-50 cm nysnø, men lite de siste to døgn. Det ligger nå stedvis mye løs snø i terrenget. Det har vært perioder med kraftig vind fra V tidligere i uken og fra SØ siden torsdag. Det har stedvis dannet seg fokksnøflak i leområder.

Nede i snødekket er det et kantkornlag fra november, men det er ikke observert mye aktivitet fra dette de siste dagene i denne regionen.

Det er ikke observert skredaktivitet de siste dagene.

Mountain weather

Friday 8. December 2017

2-5 mm precipitation. Moderate gale from southeast. -9 °C to -4 °C at 700 m a.s.l. Partly cloudy.

Saturday 9. December 2017

No precipitation. Strong breeze from southeast, changing to moderate gale from the southeast Saturday night. -7 °C to -2 °C at 700 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

Vinden vil trolig fortsette å frakte noe snø, men skredfaren vil gradvis avta etter hvert som snøoverflaten blir hardere. Bærende flak vil beskytte vedvarende svake lag, men enkelte steder kan det forsatt være mulig å trigge skred i disse lagene og evt. skred kan da bli relativt store.
Avalanche danger scale Important information for ski touring
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