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Avalanche warning for region Sør-Troms Tuesday 09.01.2018

Danger level 4 - High avalanche danger

Published:
Rising temperatures and rain will weaken the snow pack. Naturally released avalanches are expected, mostly at lower elevations and in the outer parts of the region. In the alpine the wind slabs will remain unstable.

Avalanche problems

Wet snow (slab avalanches)

You can very easily 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 surface hoar

Wind drifted snow (slab avalanches)

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

Buried weak layer of new snow
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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)

Monday 8. January 2018

Det er store forskjeller i nysnømengdene i regionen, alt fra 5-10 cm til 20-30 cm.

Under tregrensa ligger det opp til 50 cm løs snø. Over ligger det stedvis hard og myk fokksnø, stort sett som myke og små flak.

Mildvær før jul nullstilte det gamle snødekket, som ligger stabilt under den nye snøen.

Tirsdag 2. januar ble det observert nedsnødd/nedføyket overflaterim med store velutviklede krystaller fra kuldeperioden i romjula.

Fredag ble løst ut et mindre (str. 1,5) flakskred av skiløpere vest for Harstad. Skredet gikk trolig på et svakt lag av nysnø.

Mountain weather

Monday 8. January 2018

8 mm precipitation, up to 15 mm in the most exposed areas. Gale from northwest, changing to fresh breeze from the northwest during the afternoon. -8 °C to -3 °C at 1100 m a.s.l. Cloudy.

Tuesday 9. January 2018

15 mm precipitation, up to 25 mm in the most exposed areas. Fresh breeze from west. -4 °C to 1 °C at 1100 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

Mildvær og regn svekker bindingene i snødekket i lavlandet. Her ventes det naturlig utløste skred. I høyfjellet og i indre strøk vil det bli pålagring og ustabil fokksnø i leområder.

Skredfaren ventes å nå 4-stor under mildværsgrensen.
Avalanche danger scale Important information for ski touring
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