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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Hallingdal Thursday 05.03.2020

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

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 4. March 2020

Under skoggrensen ligger det tørr ubunden snø. Høyere opp er snødekket stedvis mer vindpåvirket og det veksler mellom myke fokksnøflak og løssnø. De ferskeste fokksnøflakene ligger i fjellsider vendt mot vest til nord, eldre flak mot øst. Stedvis ligger det svake lag med nysnø under fokksnøen men tester tidligere viser liten bruddforplantning i denne fokksnøen.
Det gamle, underliggende snødekket er i stor grad stabilt. Der vinden har kommet godt til, er det avblåst ned til gammel skare.

Det finnes kantkornlag høyt i snødekket under skare, og ved bakke.

Det har kommet en del nysnø de siste dagene, natt til onsdag 5-10 cm, mest i østlige områder.

Mountain weather

Wednesday 4. March 2020

5-7 mm precipitation. Breeze from east, changing to breeze from the northwest during the afternoon. -9 °C to -6 °C at 1400 m a.s.l. Cloudy.

Thursday 5. March 2020

No precipitation. Breeze from west. -11 °C to -6 °C at 1400 m a.s.l. Clear skies.

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

Lite vind og nedbør med gunstig temperatur vetes å stabilisere de ferske nysnøflakene ganske raskt. Det forventes at det vil være mulig å utløse skred i den ferskeste fokksnøen, mens det trolig skal stor tilleggsbelastning til for å løse ut skred i eldre fokksnø. Men dersom det skjer, kan skred bli av str. 2-3. 
Avalanche danger scale Important information for ski touring
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