Powerful gales reaching speeds of approximately 155km/h (96mph) have resulted in around 90,000 properties without power and compelled officials to call off more than 100 air travel services, according to domestic outlets.
The winds are impacting the complete South Island and lower areas of the North Island, per the country's meteorological service.
New Zealand authorities have issued uncommon severe gust advisories - the highest alert level - in central regions encompassing Wellington and Canterbury.
Locals have been encouraged to remain inside, refrain from journeys, and get ready for additional utility disruptions.
Extensive Destruction and Emergency Response
This outage appears to be affecting homes mainly in the southern region, though officials say that energy was being gradually reinstated.
Local media have reported that in various locations homes have lost their roofs, while utility poles and vegetation have been knocked down by the gales.
Within the capital, a man was fatally injured after being struck by a wooden fragment at a popular trail walking spot on earlier this week.
Additionally in the city, a female was pushed toward oncoming traffic on a thoroughfare by a powerful blast, in a event that was filmed in a popular vehicle recording.
Aircraft services entering and leaving the urban area have been halted because of the gusts, whereas various routes and public facilities are also closed.
Meanwhile authorities in Canterbury have announced a emergency situation, to support emergency management operations.
Labor Protests Alongside Severe Weather
These intense gusts on Thursday occur while numerous of school staff, physicians and civil servants are engaged in what has been termed a "significant labor action", calling for better pay and working conditions.
But the severe conditions has compelled them to alter some of their plans, with various open-air gatherings relocated inside or called off.
Similar gusts are affecting Australia, ushering in a high-temperature event to the country's outback.
Agencies have declared burning restrictions for fear of bushfires.