Intense gusts attaining speeds of approximately 155km/h (96mph) have caused around 90,000 homes lacking electricity and led authorities to halt more than 100 flights, according to local media.
The gales are influencing the entire South Island and southern sections of the North Island, as stated by the weather forecasting body.
Officials in New Zealand have announced infrequent severe gust advisories - the highest alert level - in central regions encompassing Wellington and Canterbury.
People have been encouraged to avoid going outside, avoid travel, and make arrangements for additional electricity and network failures.
Widespread Damage and Crisis Response
The power cut appears to be affecting households mostly in the South Island, although officials state that the electricity supply was being restored progressively.
Regional news have reported that in certain areas structures have suffered roof damage, whereas power lines and trees have been toppled by the winds.
In Wellington, a person was lost his life after being struck by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a woman was blown onto oncoming traffic on a road by a strong gust of wind, in a event that was filmed in a viral dashcam video.
Aircraft services in and out of the metropolis have been cancelled as a result of the weather, and various routes and public facilities are also closed.
Meanwhile local leaders have issued a crisis declaration, to facilitate recovery activities.
Work Stoppages Alongside Severe Conditions
The powerful gales on Thursday occur while numerous of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", demanding higher wages and enhanced employment terms.
Yet the extreme weather has forced them to alter various scheduled activities, with various open-air gatherings moved indoors or cancelled.
Like conditions are affecting Australia, bringing a period of extreme heat to the remote areas.
Agencies have declared flame prohibitions for concern about wildfires.
