South Pacific Ocean: TC Niran continues to weaken as it tracks southeastward in South Pacific Ocean March 7 /update 8

Event

Category-1 Severe Tropical Cyclone Niran continues to weaken as tracks southeastward in the South Pacific Ocean March 7. As of 1400 NCT, the center of circulation was approximately 1,260 km (783 miles) southeast of Noumea. The system is no longer affecting land. Forecast models indicate the system will weaken further and dissipate over the South Pacific Ocean by March 8.

The storm has resulted in at least two injuries and some property damage across New Caledonia as of March 7. Reports indicate minor flooding, particularly on Grand Terre, and uprooted trees, with debris blocking multiple roads. Around 5,000 residents had evacuated before Niran's close approach. Power outages are affecting close to 20,000 people; recovery operations are ongoing.

Government Advisories
Authorities in New Caledonia have lifted all tropical cyclone alerts as of 1400 NCT.

Hazardous Conditions
Weather conditions in New Caledonia are improving, though strong swells could still impact the southern coastal regions and the Loyalty Islands through early March 8. Prolonged swells and storm surge generated by the system could result in coastal flooding. Abnormally high tides could exacerbate storm surge throughout coastal New Caledonia. Persistent onshore flow could make it difficult for surge to recede and water levels to decrease in coastal river catchments. Additional power outages, due to uprooted trees and toppled utility lines, are possible.

Transport
Disruptions caused by inclement weather and resultant hazards, such as flooding, could persist well after conditions improve. If there is severe damage to infrastructure, repair or reconstruction efforts may exacerbate residual disruptions.

Advice

Charge battery-powered devices when electricity is available; restrict the use of cellular phones to emergencies only. Power down mobile devices when not in use. Keep important documents in waterproof containers. Observe strict food and water precautions, as municipalities could issue boil-water advisories following flooding events. Take precautions against insect- and waterborne diseases in the coming weeks. Keep any necessary medications in a waterproof container.

Plan accordingly for commercial, transport, and logistics disruptions. Seek updated information on road conditions before driving or routing shipments through areas where flooding has occurred. Confirm flights before checking out of hotels or going to the airport; clearing passenger backlogs may take several days in some locations.

Resources

Meteo-France Nouvelle Caledonie (French)
Joint Typhoon Warning Center