Powerful gusts attaining velocities of approximately 155km/h (96mph) have caused nearly 90,000 homes lacking electricity and led authorities to halt over 100 flights, based on local media.
The winds are influencing the whole southern region and southern sections of the North Island, according to the weather forecasting body.
New Zealand authorities have released uncommon severe gust advisories - the top caution category - in central regions including Canterbury and Wellington.
Residents have been urged to stay indoors, refrain from journeys, and get ready for additional electricity and network failures.
Widespread Impact and Crisis Measures
The electricity loss appears to be affecting homes mainly in the southern region, while authorities report that the electricity supply was being gradually reinstated.
Local media have stated that in some places structures have suffered roof damage, while power lines and trees have been brought down by the gales.
Within the capital, a person was killed after being struck by a falling limb at a popular trail walking spot on earlier this week.
Also in the capital, a woman was blown onto approaching vehicles on a street by a powerful blast, in a event that was captured in a widely shared car camera footage.
Flights entering and leaving the city have been cancelled because of the gusts, while various routes and public facilities are also closed.
At the same time local leaders have announced a crisis declaration, to facilitate recovery activities.
Strike Action Alongside Extreme Conditions
These intense gusts on this day come as many of teachers, doctors and other public workers are engaged in what has been termed a "major walkout", calling for improved salaries and workplace environments.
But the extreme weather has pressured them to modify certain arrangements, with various open-air gatherings relocated inside or called off.
Like conditions are also sweeping the neighboring country, ushering in a high-temperature event to the remote areas.
Authorities have announced fire bans for apprehension regarding bushfires.
