Powerful gusts reaching velocities of as high as 155km/h (96mph) have left around 90,000 properties without power and compelled officials to halt more than 100 aircraft departures, as reported by domestic outlets.
These gusts are affecting the whole South Island and southern sections of the North Island, as stated by the national weather agency.
Officials in New Zealand have announced infrequent high-level wind alerts - the top caution category - in key areas including Canterbury and Wellington.
People have been encouraged to remain inside, refrain from journeys, and get ready for further utility disruptions.
Widespread Damage and Crisis Response
This outage appears to be affecting residences predominantly in the southern region, though agencies say that power was being slowly brought back.
Domestic outlets have reported that in some places structures have suffered roof damage, while utility poles and vegetation have been toppled by the winds.
Across Wellington, a man was lost his life after being hit by a falling limb at a well-known hiking path on earlier this week.
Also in the capital, a individual was swept into moving cars on a street by a strong gust of wind, in a moment that was filmed in a viral dashcam video.
Flights entering and leaving the city have been cancelled as a result of the gusts, while some roads and libraries are shut down.
Simultaneously Canterbury officials have announced a crisis declaration, to facilitate recovery activities.
Work Stoppages Amid Harsh Conditions
The powerful gales on this day come as many of school staff, physicians and civil servants take part in what has been called a "significant labor action", demanding better pay and working conditions.
Yet the extreme weather has compelled them to alter some of their plans, with some outdoor rallies shifted to interior venues or called off.
Similar gusts are also sweeping the nearby nation, ushering in a period of extreme heat to the remote areas.
Agencies have issued burning restrictions for fear of forest fires.