Severe gusts reaching speeds of as high as 155km/h (96mph) have resulted in around 90,000 homes without power and compelled authorities to call off in excess of 100 air travel services, based on domestic outlets.
The gales are affecting the entire South Island and lower areas of the northern region, according to the national weather agency.
Officials in New Zealand have issued uncommon severe gust advisories - the top caution category - in key areas including these major districts.
People have been encouraged to avoid going outside, refrain from journeys, and get ready for more utility disruptions.
Broad Destruction and Emergency Measures
The power cut appears to be affecting homes predominantly in the southern region, while authorities say that power was being slowly brought back.
Domestic outlets have indicated 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 person was killed after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a woman was blown onto approaching vehicles on a thoroughfare by a intensive burst, in a event that was recorded in a widely shared car camera footage.
Flights to and from the metropolis have been suspended as a result of the winds, while various routes and public facilities are not operating.
Meanwhile local leaders have announced a crisis declaration, to facilitate disaster response efforts.
Work Stoppages Amid Harsh Conditions
The powerful gales on this day come as tens of thousands of school staff, physicians and civil servants are engaged in what has been described as a "major walkout", demanding better pay and working conditions.
Yet the intense climate has pressured them to modify certain arrangements, with some outdoor rallies relocated inside or cancelled.
Similar gusts are affecting the nearby nation, causing a heatwave to the country's outback.
Agencies have declared burning restrictions for apprehension regarding wildfires.
