Powerful gusts reaching velocities of up to 155km/h (96mph) have left around 90,000 households without power and compelled agencies to call off over 100 aircraft departures, according to local media.
The winds are affecting the entire South Island and lower areas of the northern region, according to the country's meteorological service.
The nation's agencies have released rare red wind warnings - the highest alert level - in key areas such as Canterbury and Wellington.
Locals have been urged to avoid going outside, stay off roads, and get ready for further utility disruptions.
Broad Damage and Emergency Response
The electricity loss appears to be affecting households predominantly in the South Island, although officials report that power was being restored progressively.
Regional news have indicated that in various locations structures have suffered roof damage, and power lines and trees have been knocked down by the gusts.
Within the capital, a person was fatally injured after being hit by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a individual was pushed toward oncoming traffic on a road by a intensive burst, in a incident that was filmed in a widely shared car camera footage.
Air travel to and from the urban area have been halted due to the gusts, while some roads and libraries are also closed.
At the same time authorities in Canterbury have issued a crisis declaration, to facilitate disaster response efforts.
Labor Protests Amid Extreme Conditions
These intense gusts on this day come as many of teachers, doctors and other public workers are engaged in what has been termed a "significant labor action", demanding better pay and working conditions.
Yet the extreme weather has forced them to change certain arrangements, with some outdoor rallies relocated inside or abandoned.
Similar gusts are affecting the nearby nation, bringing a high-temperature event to the nation's interior regions.
Officials have announced flame prohibitions for apprehension regarding forest fires.
