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Debris avalanches, debris flows and slush slides warning yellow level for parts of Sør- and Vestlandet

2

Yellow level

Published: Valid: from 10.05.2018 07:00 to 11.05.2018 06:59
Next forecast before:
  • Danger ongoing: Thursday afternoon 10. May. 2018
  • Danger decrease: Friday morning 11. May. 2018

Oppdatert informasjon -

Les oppdatert status på forsiden av varsom.no om flom og jordskredfare
  • Oppdatert informasjon -
    Kommuner i Hordaland, Sogn og Fjordane, Møre og Romsdal og Agder er lagt til varselet.
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

Stay updated on the latest weather developement and hydrological situation. Follow the weather forecast and radar at yr.no, and updates on varsom.no. Keep away from steep slopes, as well as streams and rivers with high discharge. Keep water paths and culverts free from snow, ice, sediments, waste, twigs and leaves.

Description

The amount of water in the soil is significant. 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 30-50 cm snow. Slush flows are triggered even in gentle slopes, where water accumulates. Slush flows follow terrain depressions and may develop into debris flows. Debris flows may reach the valley bottom even if they are triggered high in the terrain.