Severe gales reaching velocities of up to 155km/h (96mph) have resulted in approximately 90,000 homes lacking electricity and forced authorities to cancel over 100 air travel services, as reported by domestic outlets.
The winds are impacting the entire South Island and lower areas of the northern region, according to the country's meteorological service.
Officials in New Zealand have issued infrequent severe gust advisories - the top caution category - in central regions encompassing these major districts.
Residents have been urged to remain inside, refrain from journeys, and prepare for further utility disruptions.
Widespread Damage and Crisis Response
The power cut is primarily influencing residences predominantly in the southern region, although authorities state that energy was being restored progressively.
Domestic outlets have reported that in various locations structures have suffered roof damage, and trees and electricity poles have been toppled by the gusts.
In Wellington, a man was killed after being impacted by a falling limb at a frequent walking route on Tuesday.
Meanwhile in Wellington, a individual was pushed toward moving cars on a street by a intensive burst, in a moment that was recorded in a widely shared car camera footage.
Flights entering and leaving the metropolis have been cancelled due to the weather, while some roads and libraries are shut down.
At the same time Canterbury officials have declared a crisis declaration, to support disaster response efforts.
Strike Action During Harsh Conditions
The powerful gales on Thursday coincide with numerous of school staff, physicians and civil servants are participating in what has been termed a "significant labor action", calling for better pay and working conditions.
Yet the extreme weather has compelled them to alter some of their plans, with some outdoor rallies moved indoors or abandoned.
Similar gusts are affecting Australia, ushering in a heatwave to the remote areas.
Officials have declared burning restrictions for concern about bushfires.
