Intense gusts attaining velocities of as high as 155km/h (96mph) have resulted in around 90,000 homes without power and forced officials to call off in excess of 100 air travel services, based on local media.
These gusts are impacting the complete South Island and southern parts of the northern region, per the weather forecasting body.
The nation's agencies have announced rare high-level wind alerts - the top caution category - in central regions including these major districts.
People have been urged to remain inside, stay off roads, and get ready for further power and communication outages.
The electricity loss is primarily influencing homes mainly in the South Island, while agencies report that energy was being restored progressively.
Local media have reported that in various locations roofs have been ripped off houses, and trees and electricity poles have been brought down by the winds.
Across Wellington, a man was killed after being impacted by a falling limb at a well-known hiking path on Tuesday.
Additionally in the city, a woman was swept into moving cars on a street by a powerful blast, in a moment that was filmed in a widely shared car camera footage.
Flights to and from the city have been halted due to the gusts, whereas some roads and libraries are also closed.
Simultaneously Canterbury officials have declared a crisis declaration, to assist disaster response efforts.
These intense gusts on today come as tens of thousands of educators, medical professionals and government employees are engaged in what has been termed a "mega strike", calling for better pay and working conditions.
But the severe conditions has compelled them to change various scheduled activities, with several external protests shifted to interior venues or abandoned.
Similar gusts are also sweeping the neighboring country, bringing a high-temperature event to the country's outback.
Officials have issued flame prohibitions for concern about wildfires.
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