Debris avalanches, debris flows and slush slides warning yellow level for deler av Nord-Norge og Trøndelag

2

Yellow level

Published: Valid: from 28.05.2020 07:00 to 29.05.2020 06:59
Next forecast before:
  • Danger decrease: Monday morning 15. Jun. 2020
  • Height: 0 - 1200 moh

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. Som shallow slides may be occur:Soil slides and rapid movement of saturated soil in steep terrain. 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. Som shallow slides may be occur:Soil slides and rapid movement of saturated soil in steep terrain. Exposed railways and roads may be closed.

Description

The soil is water-saturated. 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 50 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. Debris flows may reach the valley bottom even if they are triggered high in the terrain.