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Debris avalanches, debris flows and slush slides warning, orange level for part of Vestlandet (West coast)

3

Orange level

Published: Valid: from 22.12.2017 07:00 to 23.12.2017 06:59
Next forecast before:
  • Danger ongoing: Friday evening 22. Dec. 2017
  • Danger decrease: Saturday evening 23. Dec. 2017
  • Height: 0 - 2000 moh

Oppdatert informasjon -

Varselet for Sogn og Fjordane er nedgradert fra oransje til gult nivå grunnet mindre nedbør
  • Oppdatert informasjon -
    Varselet for Møre og Romsdal og Trøndelag er nedgradert fra gult til grønt siden det ventes lite nedbør og minkende temperaturer resten av dagen
Se alle oppdateringer

Consequence

Many landslide events, several with considerable consequences. Major events can reach settlements, roads and railways.

Advice

Keep away from steep slopes, as well as streams and river with large high discharge. Contingency response should be attentive that buildings, and infrastructure in general, may be exposed to severe damage.

Description

The groundwater level and the soil water saturation are very high. The risk for slush flows is especially high in areas with more than 4050 cm of snow. The snow is rather water-saturated. Areas of fresh snow are particularly vulnerable since new snow is quickly saturated with water. Slush flow can be trigged in slight slopes where water is collected. The slush flows may often follow down streams, and can then develop into debris flows.