Intense gusts reaching speeds of as high as 155km/h (96mph) have caused around 90,000 homes lacking electricity and compelled authorities to call off in excess of 100 flights, according to local media.
The gales are affecting the whole South Island and lower areas of the northern region, according to the weather forecasting body.
Officials in New Zealand have released uncommon severe gust advisories - the most severe warning - in central regions such as these major districts.
Residents have been advised to remain inside, refrain from journeys, and get ready for additional electricity and network failures.
Widespread Destruction and Crisis Measures
The electricity loss is primarily influencing households mainly in the southern region, although authorities state that power was being restored progressively.
Domestic outlets have indicated that in certain areas homes have lost their roofs, and power lines and trees have been knocked down by the gales.
Within the capital, a person was lost his life after being hit by a tree branch at a popular trail walking spot on earlier this week.
Additionally in the city, a individual was swept into oncoming traffic on a road by a powerful blast, in a event that was recorded in a viral dashcam video.
Aircraft services to and from the city have been halted due to the gusts, whereas certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have declared a emergency situation, to support disaster response efforts.
Strike Action Amid Severe Weather
The wild winds on Thursday coincide with many of educators, medical professionals and government employees take part in what has been described as a "major walkout", calling for improved salaries and workplace environments.
But the extreme weather has forced them to alter various scheduled activities, with some outdoor rallies moved indoors or abandoned.
Like conditions are affecting the nearby nation, causing a high-temperature event to the country's outback.
Officials have declared burning restrictions for fear of bushfires.
