Intense gales attaining velocities of up to 155km/h (96mph) have caused around 90,000 properties lacking electricity and forced authorities to cancel more than 100 flights, based on regional news sources.
The winds are affecting the complete South Island and southern parts of the northern region, according to the country's meteorological service.
Officials in New Zealand have announced rare red wind warnings - the top caution category - in central regions such as Canterbury and Wellington.
People have been encouraged to avoid going outside, refrain from journeys, and make arrangements for further electricity and network failures.
Extensive Destruction and Crisis Response
The electricity loss appears to be affecting households mostly in the South Island, although authorities state that the electricity supply was being slowly brought back.
Domestic outlets have indicated that in some places structures have suffered roof damage, whereas trees and electricity poles have been toppled by the winds.
In Wellington, a individual was killed after being hit by a wooden fragment at a frequent walking route on earlier this week.
Additionally in the city, a woman was blown onto moving cars on a thoroughfare by a powerful blast, in a incident that was filmed in a viral dashcam video.
Flights entering and leaving the city have been suspended because of the winds, while various routes and public facilities are also closed.
Meanwhile local leaders have declared a state of emergency, to support disaster response efforts.
Labor Protests During Severe Conditions
These intense gusts on this day occur while tens of thousands of school staff, physicians and civil servants are participating in what has been called a "significant labor action", calling for improved salaries and workplace environments.
Yet the severe conditions has compelled them to change certain arrangements, with various open-air gatherings relocated inside or called off.
Like conditions are also sweeping the nearby nation, causing a high-temperature event to the nation's interior regions.
Authorities have issued burning restrictions for fear of wildfires.
