Severe gusts reaching speeds of as high as 155km/h (96mph) have left around 90,000 properties experiencing outages and forced officials to call off more than 100 air travel services, based on regional news sources.
The winds are impacting the entire South Island and southern sections of the northern region, as stated by the national weather agency.
New Zealand authorities have issued infrequent high-level wind alerts - the top caution category - in key areas encompassing Canterbury and Wellington.
Residents have been urged to remain inside, refrain from journeys, and prepare for additional utility disruptions.
Extensive Destruction and Emergency Response
The power cut seems to be impacting homes predominantly in the southern region, although agencies report that energy was being gradually reinstated.
Domestic outlets have reported that in certain areas roofs have been ripped off houses, while utility poles and vegetation have been toppled by the gusts.
Within the capital, a individual was fatally injured after being struck by a falling limb at a well-known hiking path on earlier this week.
Additionally in the city, a individual was blown onto oncoming traffic on a thoroughfare by a powerful blast, in a moment that was filmed in a viral dashcam video.
Flights entering and leaving the metropolis have been cancelled because of the winds, whereas various routes and public facilities are also closed.
At the same time authorities in Canterbury have announced a emergency situation, to support emergency management operations.
Strike Action Amid Harsh Weather
The wild winds on Thursday occur while numerous of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", calling for improved salaries and workplace environments.
But the intense climate has compelled them to modify certain arrangements, with various open-air gatherings moved indoors or abandoned.
Comparable winds are also sweeping the neighboring country, causing a high-temperature event to the country's outback.
Authorities have declared fire bans for concern about bushfires.