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Debris avalanches, debris flows and slush slides warning orange level for deler av Trøndelag og deler av Nordland

3

Orange level

Published: Valid: from 17.12.2021 07:00 to 18.12.2021 06:59
Next forecast before:
  • Danger ongoing: Friday afternoon 17. Dec. 2021
  • Danger decrease: Sunday morning 19. Dec. 2021

Consequence

Landslides are expected, some with considerable consequences. Large slides may reach settlements, roads and railways.

Advice

Keep yourself updated about the development of the weather, the landslide and flood situation, and follow the weather radar. Keep water paths and culverts free of snow, ice, gravel, waste, twigs and leaves. Clogged waterways with dammed water may cause landslides. Municipalities, Counties and other emergency operators should continuously evaluate the need for preparedness and prevention measures.

Description

Landslides are expected, some with considerable consequences. Large slides may reach settlements, roads and railways. Risk of slushflows is especially high in areas with more than 50 cm snow. The snow may in some places be fully water-saturated. Slushflows are triggered even in relatively gentle slopes, where water accumulates. Slushflows follow terrain depressions and may develop into debris flows. Heavy snowmelt is expected.