Severe gusts attaining velocities of as high as 155km/h (96mph) have caused around 90,000 homes experiencing outages and led authorities to cancel more than 100 air travel services, based on local media.
These gusts are affecting the whole southern region and southern sections of the northern region, according to the weather forecasting body.
Officials in New Zealand have issued infrequent high-level wind alerts - the top caution category - in central regions such as these major districts.
Locals have been advised to avoid going outside, refrain from journeys, and make arrangements for more electricity and network failures.
Widespread Impact and Crisis Measures
This outage appears to be affecting residences predominantly in the South Island, although agencies state that power was being gradually reinstated.
Local media have indicated that in certain areas structures have suffered roof damage, while trees and electricity poles have been knocked down by the winds.
Across Wellington, a person was lost his life after being hit by a wooden fragment at a popular trail walking spot on earlier this week.
Additionally in the city, a female was blown onto oncoming traffic on a thoroughfare by a powerful blast, in a incident that was filmed in a viral dashcam video.
Aircraft services in and out of the city have been suspended because of the weather, whereas certain highways and community centers are also closed.
Simultaneously Canterbury officials have declared a crisis declaration, to assist recovery activities.
Labor Protests During Extreme Conditions
These intense gusts on this day come as tens of thousands of school staff, physicians and civil servants take part in what has been termed a "mega strike", calling for better pay and working conditions.
Yet the severe conditions has compelled them to modify certain arrangements, with various open-air gatherings relocated inside or cancelled.
Like conditions are impacting Australia, bringing a period of extreme heat to the country's outback.
Officials have declared burning restrictions for fear of forest fires.
