Intense gales attaining velocities of approximately 155km/h (96mph) have left around 90,000 households without power and led authorities to cancel in excess of 100 aircraft departures, according to domestic outlets.
The winds are influencing the whole South Island and southern sections of the North Island, according to the weather forecasting body.
Officials in New Zealand have released rare severe gust advisories - the highest alert level - in central regions such as Wellington and Canterbury.
Residents have been advised to stay indoors, refrain from journeys, and prepare for additional electricity and network failures.
Broad Impact and Emergency Response
The power cut seems to be impacting homes predominantly in the southern region, though authorities state that energy was being restored progressively.
Local media have indicated that in certain areas homes have lost their roofs, whereas trees and electricity poles have been brought down by the winds.
In Wellington, a individual was killed after being impacted by a wooden fragment at a popular trail walking spot on earlier this week.
Also in the capital, a individual was blown onto approaching vehicles on a road by a strong gust of wind, in a event that was captured in a widely shared car camera footage.
Flights entering and leaving the metropolis have been suspended because of the winds, whereas some roads and libraries are also closed.
At the same time Canterbury officials have issued a crisis declaration, to assist disaster response efforts.
Work Stoppages Amid Extreme Weather
These intense gusts on today come as many of educators, medical professionals and government employees take part in what has been described as a "significant labor action", demanding better pay and working conditions.
However the severe conditions has forced them to change certain arrangements, with some outdoor rallies relocated inside or cancelled.
Like conditions are also sweeping the nearby nation, ushering in a period of extreme heat to the nation's interior regions.
Officials have declared burning restrictions for concern about forest fires.
