Powerful gales reaching speeds of approximately 155km/h (96mph) have left approximately 90,000 homes without power and forced agencies to halt over 100 flights, according to domestic outlets.
The winds are influencing the complete southern region and southern sections of the northern region, according to the weather forecasting body.
The nation's agencies have issued rare severe gust advisories - the top caution category - in central regions such as Canterbury and Wellington.
People have been urged to stay indoors, refrain from journeys, and get ready for further utility disruptions.
Extensive Damage and Crisis Measures
This outage appears to be affecting residences mostly in the southern region, while officials report that the electricity supply was being slowly brought back.
Domestic outlets have stated that in some places roofs have been ripped off houses, and utility poles and vegetation have been brought down by the gusts.
Within the capital, a individual was fatally injured after being impacted by a wooden fragment at a popular trail walking spot 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 entering and leaving the urban area have been cancelled due to the winds, and various routes and public facilities are also closed.
Meanwhile authorities in Canterbury have announced a crisis declaration, to support recovery activities.
Work Stoppages Alongside Extreme Weather
These intense gusts on Thursday occur while tens of thousands of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", requesting improved salaries and workplace environments.
But the intense climate has forced them to change some of their plans, with several external protests moved indoors or abandoned.
Comparable winds are also sweeping the nearby nation, causing a high-temperature event to the remote areas.
Authorities have issued burning restrictions for concern about wildfires.
