Severe winds reaching speeds of up to 155km/h (96mph) have resulted in nearly 90,000 properties without power and forced officials to halt over 100 air travel services, according to local media.
The gales are influencing the entire South Island and lower areas of the North Island, per the national weather agency.
New Zealand authorities have announced uncommon high-level wind alerts - the top caution category - in central regions encompassing Canterbury and Wellington.
Residents have been urged to remain inside, stay off roads, and prepare for additional utility disruptions.
Broad Impact and Crisis Measures
The power cut is primarily influencing households predominantly in the southern region, although agencies say that energy was being gradually reinstated.
Local media have reported that in certain areas structures have suffered roof damage, whereas utility poles and vegetation have been knocked down by the gales.
Within the capital, a individual was lost his life after being hit by a falling limb at a frequent walking route on Tuesday.
Also in the capital, a individual was pushed toward oncoming traffic on a street by a strong gust of wind, in a event that was recorded in a viral dashcam video.
Aircraft services to and from the city have been cancelled as a result of the gusts, and certain highways and community centers are shut down.
At the same time Canterbury officials have issued a state of emergency, to assist emergency management operations.
Work Stoppages Alongside Harsh Conditions
The powerful gales on this day come as tens of thousands of teachers, doctors and other public workers take part in what has been termed a "mega strike", requesting better pay and working conditions.
However the intense climate has compelled them to modify various scheduled activities, with several external protests relocated inside or called off.
Comparable winds are also sweeping the neighboring country, causing a heatwave to the country's outback.
Officials have issued fire bans for fear of bushfires.
