Intense gales hitting velocities of as high as 155km/h (96mph) have resulted in around 90,000 properties without power and led authorities to cancel over 100 aircraft departures, based on domestic outlets.
The winds are affecting the whole South Island and southern sections of the North Island, per the national weather agency.
The nation's agencies have released infrequent red wind warnings - the highest alert level - in central regions encompassing Canterbury and Wellington.
Locals have been advised to remain inside, refrain from journeys, and get ready for additional electricity and network failures.
Widespread Damage and Crisis Measures
The electricity loss appears to be affecting residences mostly in the South Island, though authorities say that power was being restored progressively.
Local media have indicated that in various locations structures have suffered roof damage, and utility poles and vegetation have been knocked down by the gusts.
Within the capital, a individual was lost his life after being impacted by a falling limb at a popular trail walking spot on Tuesday.
Also in the capital, a female was swept into moving cars on a thoroughfare by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Flights entering and leaving the metropolis have been cancelled due to the winds, and certain highways and community centers are shut down.
Meanwhile Canterbury officials have issued a crisis declaration, to assist disaster response efforts.
Work Stoppages During Severe Weather
The powerful gales on today occur while numerous of educators, medical professionals and government employees take part in what has been called a "significant labor action", requesting improved salaries and workplace environments.
But the severe conditions has forced them to alter some of their plans, with several external protests shifted to interior venues or cancelled.
Similar gusts are also sweeping the neighboring country, causing a high-temperature event to the country's outback.
Agencies have declared flame prohibitions for fear of forest fires.