Severe gales hitting speeds of up to 155km/h (96mph) have left around 90,000 properties without power and forced authorities to cancel over 100 flights, based on domestic outlets.
The gales are impacting the entire South Island and lower areas of the northern region, according to the weather forecasting body.
The nation's agencies have issued rare high-level wind alerts - the highest alert level - in central regions including Canterbury and Wellington.
Locals have been urged to remain inside, refrain from journeys, and prepare for further utility disruptions.
Widespread Destruction and Emergency Response
This outage appears to be affecting homes mainly in the South Island, although authorities report that the electricity supply was being slowly brought back.
Regional news have stated that in various locations roofs have been ripped off houses, whereas utility poles and vegetation have been knocked down by the gales.
Across Wellington, a man was lost his life after being impacted by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a individual was blown onto approaching vehicles on a thoroughfare by a strong gust of wind, in a moment that was filmed in a widely shared car camera footage.
Aircraft services to and from the city have been halted because of the weather, while some roads and libraries are not operating.
Meanwhile local leaders have declared a crisis declaration, to assist disaster response efforts.
Labor Protests Amid Extreme Conditions
The wild winds on today come as tens of thousands of school staff, physicians and civil servants are participating in what has been called a "significant labor action", calling for improved salaries and workplace environments.
But the severe conditions has forced them to alter various scheduled activities, with some outdoor rallies relocated inside or called off.
Similar gusts are impacting the nearby nation, bringing a high-temperature event to the remote areas.
Officials have announced fire bans for fear of bushfires.
