Intense winds attaining velocities of as high as 155km/h (96mph) have caused around 90,000 properties without power and forced authorities to cancel more than 100 air travel services, as reported by domestic outlets.
The gales are influencing the entire South Island and southern parts of the northern region, according to the weather forecasting body.
The nation's agencies have released infrequent severe gust advisories - the highest alert level - in central regions including Wellington and Canterbury.
Locals have been urged to avoid going outside, refrain from journeys, and prepare for further power and communication outages.
Widespread Destruction and Crisis Measures
The electricity loss is primarily influencing households predominantly in the South Island, although agencies say that power was being gradually reinstated.
Domestic outlets have reported that in certain areas roofs have been ripped off houses, whereas power lines and trees have been toppled by the winds.
Within the capital, a individual was lost his life after being impacted by a tree branch at a well-known hiking path on Tuesday.
Additionally in the city, a individual was swept into oncoming traffic on a street by a intensive burst, in a moment that was recorded in a viral dashcam video.
Flights to and from the metropolis have been suspended due to the weather, and some roads and libraries are also closed.
Meanwhile authorities in Canterbury have announced a emergency situation, to assist emergency management operations.
Work Stoppages Amid Severe Conditions
These intense gusts on today coincide with tens of thousands of educators, medical professionals and government employees take part in what has been termed a "significant labor action", demanding better pay and working conditions.
However the extreme weather has compelled them to modify some of their plans, with some outdoor rallies moved indoors or called off.
Like conditions are affecting Australia, causing a heatwave to the country's outback.
Officials have announced burning restrictions for fear of forest fires.
