Powerful winds attaining velocities of as high as 155km/h (96mph) have resulted in approximately 90,000 households lacking electricity and compelled agencies to call off over 100 air travel services, as reported by local media.
The gales are affecting the complete South Island and southern sections of the North Island, according to the weather forecasting body.
The nation's agencies have announced uncommon severe gust advisories - the most severe warning - in key areas such as these major districts.
Residents have been encouraged to avoid going outside, refrain from journeys, and get ready for more power and communication outages.
Broad Damage and Crisis Measures
The electricity loss appears to be affecting households mostly in the southern region, although authorities state that the electricity supply was being gradually reinstated.
Local media have reported that in certain areas homes have lost their roofs, whereas power lines and trees have been toppled by the winds.
In Wellington, a person was killed after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a individual was blown onto oncoming traffic on a road by a powerful blast, in a incident that was filmed in a popular vehicle recording.
Flights to and from the city have been cancelled as a result of the winds, whereas various routes and public facilities are not operating.
At the same time authorities in Canterbury have announced a state of emergency, to support recovery activities.
Work Stoppages Amid Severe Weather
These intense gusts on Thursday come as many of educators, medical professionals and government employees are engaged in what has been called a "significant labor action", demanding improved salaries and workplace environments.
Yet the extreme weather has forced them to alter certain arrangements, with various open-air gatherings moved indoors or abandoned.
Comparable winds are also sweeping the nearby nation, ushering in a heatwave to the country's outback.
Officials have issued burning restrictions for concern about wildfires.
