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Avalanche warning for region Tromsø Friday 20.01.2023

Danger level 2 - Moderate avalanche danger

Published:
Challenging situation due to a complex snowpack. Avoid areas where the wind slabs are thin or soft. In these areas, weak faceted snow layers both shallow and deep in the snowpack can be triggered. Be aware of potential danger signs.
  • The danger is greatest from Friday afternoon

Avalanche problems

Persistent weak layer (slab avalanches)

You can easily trigger avalanches on a few steep slopes. Avalanches can get large enough to bury a car or destroy a small house (size 3). Remote triggering is possible.

Buried weak layer of faceted snow near surface

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

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)

Thursday 19. January 2023

Under tregrensen er det løs ubunden snø der den kraftige vinden ikke har tatt. Over tregrensen er snødekket stort sett kraftig påvirket av vind. Store områder er avblåst med bare rabber og mye stein. I skjermede områder er det noen steder vindpakket myk snø med brukbart skiføre.

Etter kraftig vind den siste tiden ligger vedvarende svake lag ved bakken under hard fokksnø mange steder.

Kantkorn ligger noen steder nedføyket/nedsnødd men etter mye vind er det usikkert hvor lett det er å påvirke dette laget. Stabilitetstester tidlig denne uken tyder på at laget har evne til bruddforplanting.

Mountain weather

Thursday 19. January 2023

Little to no precipitation. Fresh breeze from south. -14 °C to -3 °C at 700 m a.s.l. Partly cloudy.

Friday 20. January 2023

6 mm precipitation, up to 15 mm in the most exposed areas. Precipitation as snow. Fresh breeze from southwest, changing to strong breeze from the west during the afternoon. -7 °C to 0 °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

Det er usikkert hva de svake lagene i snødekket tåler av pålagring. Nå når det kommer nedbør er det grunn til å være forsiktig inntil en vet hvordan lagene responderer. Det kan være lett å løse ut skred enkelte steder og skred kan bli store.

Nysnø og vind gir ustabile flak. En person kan lett løse ut skred i det øverste snølaget. Vær spesielt oppmerksom i skoggrensen.

Avalanche danger scale Important information for ski touring
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