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Flood warning orange level for deler av Trøndelag

3

Orange level

Published: Valid: from 18.12.2021 07:00 to 19.12.2021 06:59
Next forecast before:
  • Danger ongoing: Friday evening 17. Dec. 2021
  • Danger decrease: Sunday morning 19. Dec. 2021
  • Height: 0 - 1000 moh

Oppdatert informasjon -

Det er fjernet noen kommuner i Nordland da det har kommet mindre nedbør enn ventet i dette området.
  • Oppdatert informasjon -
    Se vannføring i sanntid på https://bit.ly/3e1uAWt
  • Oppdatert informasjon -
    Noen kommuner i nord og øst er fjernet fra varselet, da det er ventet mindre nedbør og kjøligere vær i nord og øst i opprinnelig varslingsområde fredag. Lørdag er varselet oppgradert til oransje nivå, da det er ventet mer nedbør enn tidligere prognoser.
Se alle oppdateringer

Consequence

Local flooding and/or erosional damage in streams and small rivers. Stormwater in urban areas. Extensive flooding, erosion damage and flood damage in exposed places. May cause closed roads and bridges.

Advice

Stay informed on the situation. Secure and/or move assets away from vulnerable areas (car, caravan along rivers/streams, basements). Cleaning of drainage paths and culverts is recommended. Keep away from rivers and streams with high flow. Emergency authorities must be prepared for the fact that building and infrastructure in general may be subject to serious incidents.

Description

Water discharge is expected to increase because of rain and snowmelt. This may cause local inundation where river channels are filled with ice and because of frozen ground. It also may cause ice drift in streams, with subsequent local inundation. Local flooding and erosion damage. Large amounts of precipitation are expected in the warning area. Large snow melting due to rising temperatures is expected. Hydropower production will in some cases act as flood control, and therefore the issued warning will not necessarily apply to all regulated waterways. Local flooding and erosion damage.