Powerful gusts reaching velocities of up to 155km/h (96mph) have caused approximately 90,000 homes without power and forced agencies to cancel more than 100 air travel services, according to regional news sources.
The gales are influencing the complete southern region and southern sections of the North Island, per the national weather agency.
The nation's agencies have released infrequent red wind warnings - the most severe warning - in central regions encompassing Wellington and Canterbury.
Residents have been encouraged to remain inside, avoid travel, and get ready for further electricity and network failures.
Extensive Damage and Crisis Measures
The power cut is primarily influencing households mostly in the South Island, though authorities state that energy was being slowly brought back.
Regional news have indicated that in certain areas homes have lost their roofs, while utility poles and vegetation have been toppled by the gales.
In Wellington, a individual was fatally injured after being impacted by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a individual was swept into approaching vehicles on a street by a intensive burst, in a incident that was captured in a popular vehicle recording.
Air travel in and out of the urban area have been halted because of the weather, and various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have declared a state of emergency, to support recovery activities.
Work Stoppages Alongside Severe Conditions
The wild winds on this day come as many of teachers, doctors and other public workers are engaged in what has been called a "mega strike", calling for improved salaries and workplace environments.
Yet the extreme weather has forced them to modify various scheduled activities, with various open-air gatherings moved indoors or cancelled.
Comparable winds are also sweeping Australia, ushering in a period of extreme heat to the country's outback.
Officials have issued fire bans for concern about forest fires.