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Debris avalanches, debris flows and slush slides warning yellow level for parts of Østlandet

2

Yellow level

Published: Valid: from 07.06.2020 07:00 to 08.06.2020 06:59
Next forecast before:
  • Danger ongoing: Friday morning 5. Jun. 2020
  • Danger decrease: Monday morning 8. Jun. 2020
  • Height: 0 - 1300 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. Slushflows: A flow 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 and the landslide and flood situation

Description

The soil is locally water-saturated. Steep slopes, as well as streams and river with high discharge, are particularly exposed. 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. Debris flows may reach the valley bottom even if they are triggered high in the terrain.