Powerful winds reaching speeds of as high as 155km/h (96mph) have resulted in around 90,000 properties without power and compelled officials to cancel over 100 aircraft departures, as reported by local media.
The gales are influencing the entire South Island and lower areas of the North Island, according to the weather forecasting body.
The nation's agencies have announced infrequent severe gust advisories - the highest alert level - in central regions such as these major districts.
Locals have been encouraged to stay indoors, refrain from journeys, and prepare for additional utility disruptions.
Widespread Destruction and Emergency Measures
The electricity loss seems to be impacting homes mostly in the South Island, while agencies say that the electricity supply was being restored progressively.
Domestic outlets have stated that in certain areas homes have lost their roofs, whereas trees and electricity poles have been knocked down by the winds.
Within the capital, a individual was fatally injured after being hit by a wooden fragment at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a individual was swept into moving cars on a street by a powerful blast, in a incident that was filmed in a popular vehicle recording.
Flights to and from the city have been suspended because of the winds, while various routes and public facilities are also closed.
Meanwhile local leaders have issued a crisis declaration, to support emergency management operations.
Strike Action During Extreme Conditions
The powerful gales on today come as tens of thousands of teachers, doctors and other public workers take part in what has been described as a "major walkout", requesting better pay and working conditions.
However the severe conditions has pressured them to modify certain arrangements, with several external protests shifted to interior venues or abandoned.
Similar gusts are impacting the nearby nation, causing a period of extreme heat to the nation's interior regions.
Officials have issued fire bans for fear of wildfires.
