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Debris avalanches, debris flows and slush slides warning yellow level for Nordland and parts of Trøndelag og Troms

2

Yellow level

Published: Valid: from 29.12.2019 07:00 to 30.12.2019 06:59
Next forecast before:
  • Danger ongoing: Sunday morning 29. Dec. 2019
  • Danger decrease: Monday afternoon 30. Dec. 2019
  • Height: 0 - 1000 moh

Oppdatert informasjon -

Varselet for Nordland og deler av Trøndelag og Troms er nedgradert til grønt nivå for mandagen pga. mindre nedbør enn ventet på søndagen. Varselet for Hordaland, Sogn og Fjordane og deler av Møre og Romsdal er nedgradert til gult nivå for mandagen pga. mindre nedbør i værprognoser.
  • Oppdatert informasjon -
    Les oppdatert status på forsiden av varsom.no om flom og jordskredfare på Vestlandet
  • Oppdatert informasjon -
    Kommuner nord i Nordland og i Sør-Troms er nå lagt til i varselet pga. mer nedbør i værprognoser.
  • Oppdatert informasjon -
    Kommuner nord i Nordland og i Sør-Troms er nå fjernet fra varselet pga. mindre nedbør i prognoser.
Se alle oppdateringer

Consequence

Some landslides are expected. A few large events may occur. Exposed railways and roads may be closed. Debris avalanches/shallow slides: Soil slides and rapid movement of saturated soil in steep terrain. Debris flows: A "flood" of water, soil and rocks in steep creeks. Surface runoff in steep terrain can cause streams to change regular flow patterns. Slush slides: A flow of waterlogged snow. These landslides can start in relatively flat terrain and seek towards streams and steep slopes.

Advice

Keep yourself updated about the development of the weather, the landslide and flood situation, and follow the weather radar. Keep away from steep slopes, as well as streams and rivers with high discharge. Keep water paths and culverts free of snow, ice, gravel, waste, twigs and leaves. Clogged waterways with dammed water may cause landslides.

Description

Steep slopes, as well as streams and river with high discharge, are particularly exposed. Risk of slush flows is especially high in areas with more than 40 cm snow. The snow may in some places be fully water-saturated. Slush flows are triggered even in relatively gentle slopes, where water accumulates. Slush flows follow terrain depressions and may develop into debris flows.