Debris avalanches, debris flows and slush slides warning yellow level for Troms og Finnmark

2

Yellow level

Published: Valid: from 19.05.2021 07:00 to 20.05.2021 06:59
Next forecast before:
  • Danger increase: Wednesday morning 19. May. 2021
  • Danger decrease: Friday morning 21. May. 2021
  • Height: 0 - 1500 moh

Oppdatert informasjon -

Nedbørsprognosene er nedjustert. Varselet ligger i nedre del av gult nivå.

Consequence

Some landslides are expected. A few large slides may occur. Exposed railways and roads may be closed. Debris avalanches/shallow slides are soil slides and rapid movement of saturated soil in steep terrain. Debris flows are a "flood" of water, soil and rocks in steep creeks. Surface runoff in steep terrain can cause streams to change regular flow patterns. Slushflows are flows of watersaturated snow. These slides 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

Some landslides are expected. A few large slides may occur. Exposed roads may be closed. 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. Rain is expected, followed by heavy showers in some places. The soil water content will increase due to snowmelt. This will increase the danger of slushflows, landslides and debris flows along rivers and streams, and in slopes where there is snowmelt.