Intense winds hitting speeds of approximately 155km/h (96mph) have left around 90,000 households experiencing outages and forced authorities to call off more than 100 air travel services, according to local media.
The gales are influencing the complete South Island and southern sections of the North Island, according to the weather forecasting body.
Officials in New Zealand have released rare high-level wind alerts - the most severe warning - in key areas including Wellington and Canterbury.
Residents have been urged to avoid going outside, avoid travel, and prepare for more electricity and network failures.
Extensive Destruction and Crisis Response
The electricity loss seems to be impacting homes mainly in the South Island, although agencies say that power was being restored progressively.
Regional news have stated that in various locations structures have suffered roof damage, while power lines and trees have been knocked down by the winds.
Within the capital, a man was lost his life after being struck by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a woman was blown onto oncoming traffic on a road by a powerful blast, in a event that was filmed in a viral dashcam video.
Aircraft services entering and leaving the metropolis have been halted because of the winds, while some roads and libraries are also closed.
At the same time local leaders have declared a crisis declaration, to support recovery activities.
Work Stoppages Alongside Extreme Conditions
The powerful gales on today come as many of school staff, physicians and civil servants take part in what has been called a "significant labor action", requesting higher wages and enhanced employment terms.
But the intense climate has forced them to alter certain arrangements, with several external protests moved indoors or cancelled.
Similar gusts are also sweeping the neighboring country, causing a period of extreme heat to the country's outback.
Officials have announced flame prohibitions for apprehension regarding bushfires.
