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Avalanche warning for region Hallingdal Thursday 09.02.2023

Danger level 3 - Considerable avalanche danger

Published:
Strong wind and snowfall can produce avalanches to go naturally, especially west in the region. Be careful in lee areas with wind deposited snow, typically behind ridges, ribs and in gullies. There are presistent weak layers in the snow pack.

Avalanche problems

Wind drifted snow (slab avalanches)

Avalanches may release spontaneously 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 a few 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

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.

Snow cover (in Norwegian), 08.02.2023

Snøoverflaten preges stort sett av hard vindtransportert snø men den varierer i fasthet. Det er mest snø i østvendt terreng og her ligger det også myke flak. Vindutsatte formasjoner er avblåst. Det finnes begrensede mengder snø tilgjengelig for transport.

Det ble dannet rim i klarværet forrige uke, og dette har nå stedvis snødd ned og danner et svakt lag.

På noen plasser finnes det kantkornlag mellom eller rundt skarelag i snøpakka. Laget kan være lett å påvirke der snødekket er tynt.

Det finnes kantkornet snø ved bakken i alle himmelretninger, men det skal trolig stor tilleggsbelastning til for å påvirke dette laget.

På tirsdag gikk et naturlig utløst skred på størrelse 2 nær Langetjørne i Hallingdal.

Mountain weather, 08.02.2023

Little to no precipitation. Moderate gale from southwest. -5 °C to 0 °C at 1400 m a.s.l. Partly cloudy.

Mountain weather, 09.02.2023

10 mm precipitation, up to 35 mm in the most exposed areas. Rain up to 600 m a.s.l Thursday night. Gale from southwest, changing to gale from the west during the evening. -10 °C to -2 °C at 1400 m a.s.l. Partly cloudy.

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