Severe winds attaining speeds of approximately 155km/h (96mph) have left nearly 90,000 households lacking electricity and compelled agencies to cancel more than 100 flights, according to local media.
The winds are influencing the complete South Island and lower areas of the northern region, according to the weather forecasting body.
The nation's agencies have issued rare severe gust advisories - the highest alert level - in central regions such as these major districts.
People have been urged to avoid going outside, stay off roads, and prepare for additional power and communication outages.
Extensive Destruction and Crisis Response
The power cut appears to be affecting residences predominantly in the southern region, though agencies say that power was being gradually reinstated.
Local media have reported that in various locations structures have suffered roof damage, and utility poles and vegetation have been toppled by the gusts.
Across Wellington, a individual was lost his life after being impacted by a wooden fragment at a popular trail walking spot on earlier this week.
Also in the capital, a female was pushed toward moving cars on a road by a powerful blast, in a incident that was filmed in a viral dashcam video.
Air travel in and out of the metropolis have been halted due to the gusts, and certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have announced a emergency situation, to assist recovery activities.
Work Stoppages During Extreme Weather
The wild winds on this day come as numerous of school staff, physicians and civil servants take part in what has been termed a "major walkout", calling for higher wages and enhanced employment terms.
But the intense climate has pressured them to alter some of their plans, with some outdoor rallies moved indoors or abandoned.
Comparable winds are also sweeping the neighboring country, causing a high-temperature event to the nation's interior regions.
Officials have issued flame prohibitions for concern about forest fires.