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Ski touring in Norway - important information | Varsom.no

Avalanche warning for region Nord-Troms Friday 28.12.2018

Danger level 3 - Considerable avalanche danger

Published:
Snow showers and strong winds have formed a wind slab that can be triggered. Surface hoars may linger in isolated features and can prove to be active. A persistent weak layer has formed under a melt/freeze crust layer, but it has yet to prove reactive. The forecast is primarily valid for outer parts of the region.

Avalanche problems

Wind drifted snow (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).

Buried weak layer of new snow

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 surface hoar
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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)

Thursday 27. December 2018

De siste dagene er det kommet ca 10-15 cm med nysnø i kombinasjon med kraftig vind, særlig i ytre deler.

Før nysnøen lå det mest snø i nordvendte leformasjoner, men det er store regionale forskjeller i mengde og fordeling.

Det gamle snødekket er stort sett hardt og tynt, men med mykere flak i beskyttede leformasjoner.

Snødekket har skarelag opp til ca. 600-700 moh.

Kulde og klarvær har før snøfallet dannet kantkorn under skarelag i høyden mellom 300-700 moh.

Mountain weather

Thursday 27. December 2018

2-5 mm precipitation. Breeze from southeast, changing to breeze from the east during the afternoon. -10 °C to -3 °C at 1100 m a.s.l. Partly cloudy.

Friday 28. December 2018

4 mm precipitation, up to 9 mm in the most exposed areas. Fresh breeze from southeast, changing to moderate gale from the west during renoon. -12 °C to -5 °C at 1100 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

En ny runde med vind og snø vil øke skredfaren igjen fra midt på dagen. Det ventes snøtransport som vil danne ustabile områder med fokksnø. Usikkerhet rundt hvilken bane lavtrykket på kysten tar, gjør at det kan bli vesentlig mer vind enn meldt.

Det er fortsatt usikkerthet rundt betydningen av det nedsnødde overflaterimet og tilstedeværelsen av kantkorn.
Avalanche danger scale Important information for ski touring
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