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Avalanche warning for region Jotunheimen Thursday 11.03.2021

Danger level 3 - Considerable avalanche danger

Published:
Complicated situation with persistent weak layers in the snow pack, wind and fresh snow. Avalanches may be released both naturally and remotely.

Avalanche problems

Wind drifted snow (slab 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 new snow

Persistent weak layer (slab avalanches)

You can easily trigger avalanches on some 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 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)

Wednesday 10. March 2021

I høyfjellet består snøoverflaten stort sett av vindpakket snø og skarelag. Det gamle snødekket har tidligere vært gjennomvått opp til 1100 moh, men har nå har frosset til skare.

Det finnes flere kantkornlag rundt skarelag i snødekket.

Onsdag målte Sognefjellshytta (1413moh) -10 grader og SØ liten storm.

Mountain weather

Wednesday 10. March 2021

4 mm precipitation, up to 10 mm in the most exposed areas. Fresh breeze from southeast, changing to gale from the southeast during renoon. -14 °C to -10 °C at 1800 m a.s.l. Cloudy.

Thursday 11. March 2021

13 mm precipitation, up to 20 mm in the most exposed areas. Storm from southeast, changing to strong breeze from the southeast during the afternoon. -13 °C to -8 °C at 1800 m a.s.l. 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

Økende skredfare. Kraftig vind og snøvær vil gi omfattende snøtransport i høyden. Mest utsatt er fjellsider vendt mot V-NV-N og terreng som ellers samler snø.
Noen heng vil få stor pålagring og naturlig utløste skred kan forekomme. Middels store skred er mest aktuelt. I renner med store henteområder for snø og andre klassiske skredbaner kan skred også bli store.
I områder som får mest nedbør vil faregraden komme opp i 3-Betydelig.
I høyden finnes svakt lag av kantkorn under skare høyt i snødekket. I enkelte heng kan det gi store skred. Vær spesielt oppmerksom der fokksnøen er tynn/avblåst.
Avalanche danger scale Important information for ski touring
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