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Debris avalanches, debris flows and slush slides warning orange level for areas around inner Trondheimsfjorden

3

Orange level

Published: Valid: from 12.02.2023 07:00 to 13.02.2023 06:59
Next forecast before:
  • Danger ongoing: Sunday afternoon 12. Feb. 2023
  • Danger decrease: Monday evening 13. Feb. 2023
  • Height: 0 - 1000 moh

Oppdatert informasjon -

Varselet er nedgradert til gult nivå for kommuner rundt indre Trondheimsfjorden. Varselet er også forlenget til mandag kveld.
  • Oppdatert informasjon -
    Varselet er oppgradert til oransje nivå for kommuner rundt indre Trondheimsfjorden. Varselet er også forlenget til mandag ettermiddag. Områder i Møre og Romsdal er nedgradert til grønt nivå
Se alle oppdateringer

Consequence

Landslides are expected, some with considerable consequences. Large slides may reach settlements, roads and railways. Debris flows may reach the valley bottom even if they are triggered high in the terrain.

Advice

Keep yourself updated about the development of the weather, the landslide and flood situation. 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. Municipalities, Counties and other emergency operators should continuously evaluate the need for preparedness and prevention measures. River erosion may trigger minor soil slips, which again may reduce the soil stability along the river. Be aware of such soil slips in areas mapped with quick clay, and areas with marine deposits. If such observations are made, do not hesitate to alert responsible municipal emergency staff at the local kommune.

Description

Landslides, debris flows and slushflows hazard due to heavy rain fall ans snow melt. Risk of slushflows is especially high in areas with 30 to 60 cm snow. Slushflows are triggered even in relatively gentle slopes, where water accumulates. Slushflows follow terrain depressions and may develop into debris flows. Heavy rain is expected. Relatively high temperatures and windy conditions causes significant snowmelting.