Intense gales reaching speeds of approximately 155km/h (96mph) have caused around 90,000 homes without power and led officials to cancel over 100 air travel services, based on domestic outlets.
The gales are influencing the complete southern region and lower areas of the northern region, according to the weather forecasting body.
Officials in New Zealand have announced uncommon red wind warnings - the most severe warning - in core zones such as these major districts.
Locals have been encouraged to avoid going outside, refrain from journeys, and prepare for further utility disruptions.
Widespread Damage and Crisis Response
This outage is primarily influencing households predominantly in the southern region, although officials say that power was being restored progressively.
Domestic outlets have indicated that in certain areas structures have suffered roof damage, while power lines and trees have been brought down by the gusts.
Within the capital, a man was killed after being hit by a wooden fragment at a well-known hiking path on Tuesday.
Also in the capital, a female was swept into oncoming traffic on a thoroughfare by a strong gust of wind, in a incident that was filmed in a popular vehicle recording.
Aircraft services in and out of the metropolis have been cancelled due to the winds, and various routes and public facilities are not operating.
Simultaneously Canterbury officials have issued a crisis declaration, to support disaster response efforts.
Work Stoppages Amid Harsh Weather
The powerful gales on Thursday coincide with many of school staff, physicians and civil servants take part in what has been called a "mega strike", calling for better pay and working conditions.
But the severe conditions has compelled them to alter certain arrangements, with various open-air gatherings relocated inside or cancelled.
Comparable winds are impacting the neighboring country, causing a period of extreme heat to the remote areas.
Officials have issued fire bans for concern about bushfires.
