Powerful gales attaining speeds of as high as 155km/h (96mph) have caused around 90,000 properties experiencing outages and led agencies to halt more than 100 air travel services, based on domestic outlets.
These gusts are influencing the entire southern region and southern sections of the North Island, according to the national weather agency.
The nation's agencies have released infrequent red wind warnings - the highest alert level - in central regions such as these major districts.
Residents have been advised to avoid going outside, refrain from journeys, and prepare for more power and communication outages.
Broad Destruction and Emergency Measures
The power cut appears to be affecting households mainly in the South Island, although officials say that the electricity supply was being gradually reinstated.
Regional news have indicated that in certain areas structures have suffered roof damage, while utility poles and vegetation have been toppled by the gales.
In Wellington, a individual was fatally injured after being struck by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a female was swept into approaching vehicles on a street by a strong gust of wind, in a moment that was filmed in a viral dashcam video.
Flights to and from the metropolis have been cancelled due to the weather, and various routes and public facilities are shut down.
At the same time authorities in Canterbury have declared a crisis declaration, to support disaster response efforts.
Strike Action Amid Extreme Conditions
The wild winds on Thursday occur while numerous of school staff, physicians and civil servants take part in what has been termed a "significant labor action", requesting better pay and working conditions.
Yet the extreme weather has forced them to change some of their plans, with several external protests shifted to interior venues or cancelled.
Like conditions are impacting the nearby nation, bringing a period of extreme heat to the country's outback.
Agencies have issued flame prohibitions for apprehension regarding wildfires.
