Powerful gusts reaching velocities of as high as 155km/h (96mph) have left nearly 90,000 properties lacking electricity and compelled officials to call off more than 100 flights, based on local media.
These gusts are affecting the complete South Island and lower areas of the North Island, per the country's meteorological service.
New Zealand authorities have released infrequent high-level wind alerts - the most severe warning - in central regions encompassing these major districts.
People have been encouraged to stay indoors, refrain from journeys, and make arrangements for further electricity and network failures.
Extensive Destruction and Crisis Response
The electricity loss seems to be impacting households mainly in the southern region, although officials say that power was being gradually reinstated.
Local media have stated that in certain areas homes have lost their roofs, and power lines and trees have been knocked down by the gusts.
Across Wellington, a individual was lost his life after being impacted by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a individual was swept into moving cars on a road by a strong gust of wind, in a moment that was recorded in a viral dashcam video.
Aircraft services entering and leaving the urban area have been halted because of the weather, whereas various routes and public facilities are not operating.
Meanwhile Canterbury officials have announced a emergency situation, to assist disaster response efforts.
Strike Action Alongside Extreme Conditions
The powerful gales on Thursday occur while tens of thousands of educators, medical professionals and government employees take part in what has been described as a "significant labor action", demanding improved salaries and workplace environments.
However the severe conditions has forced them to alter various scheduled activities, with some outdoor rallies shifted to interior venues or cancelled.
Comparable winds are impacting the nearby nation, causing a period of extreme heat to the remote areas.
Authorities have issued flame prohibitions for fear of wildfires.
