Intense gusts reaching speeds of up to 155km/h (96mph) have caused nearly 90,000 homes experiencing outages and led authorities to halt over 100 air travel services, according to local media.
The gales are affecting the entire South Island and southern sections of the North Island, as stated by the weather forecasting body.
The nation's agencies have released rare severe gust advisories - the top caution category - in core zones encompassing these major districts.
Locals have been advised to stay indoors, stay off roads, and make arrangements for further electricity and network failures.
Extensive Impact and Emergency Measures
The power cut is primarily influencing homes predominantly in the southern region, although authorities say that energy was being slowly brought back.
Regional news have reported that in certain areas structures have suffered roof damage, and power lines and trees have been brought down by the gusts.
Within the capital, a person was fatally injured after being struck by a wooden fragment at a frequent walking route on Tuesday.
Meanwhile in Wellington, a woman was pushed toward oncoming traffic on a road by a powerful blast, in a event that was filmed in a viral dashcam video.
Flights in and out of the urban area have been cancelled as a result of the weather, while certain highways and community centers are not operating.
Simultaneously local leaders have issued a crisis declaration, to facilitate recovery activities.
Work Stoppages Alongside Extreme Conditions
These intense gusts on Thursday come as tens of thousands of educators, medical professionals and government employees are participating in what has been described as a "significant labor action", requesting higher wages and enhanced employment terms.
However the intense climate has forced them to alter some of their plans, with several external protests relocated inside or cancelled.
Similar gusts are also sweeping the nearby nation, ushering in a high-temperature event to the nation's interior regions.
Officials have issued fire bans for concern about forest fires.
