Powerful gusts hitting speeds of approximately 155km/h (96mph) have resulted in nearly 90,000 households without power and compelled officials to call off over 100 air travel services, based on local media.
The gales are influencing the whole southern region and lower areas of the northern region, as stated by the weather forecasting body.
Officials in New Zealand have issued infrequent high-level wind alerts - the most severe warning - in key areas such as these major districts.
Residents have been advised to avoid going outside, refrain from journeys, and prepare for more utility disruptions.
Broad Impact and Emergency Measures
This outage appears to be affecting households mainly in the South Island, though agencies state that power was being slowly brought back.
Domestic outlets have indicated that in various locations homes have lost their roofs, and trees and electricity poles have been toppled by the gusts.
Across Wellington, a individual was lost his life after being struck by a tree branch at a well-known hiking path on earlier this week.
Also in the capital, a female was blown onto moving cars on a road by a powerful blast, in a incident that was recorded in a popular vehicle recording.
Air travel in and out of the metropolis have been cancelled because of the gusts, whereas certain highways and community centers are shut down.
Meanwhile authorities in Canterbury have announced a crisis declaration, to facilitate recovery activities.
Labor Protests During Harsh Conditions
The wild winds on Thursday occur while tens of thousands of educators, medical professionals and government employees are engaged in what has been called a "significant labor action", requesting higher wages and enhanced employment terms.
However the intense climate has forced them to alter some of their plans, with various open-air gatherings relocated inside or called off.
Similar gusts are impacting the neighboring country, ushering in a heatwave to the remote areas.
Authorities have issued flame prohibitions for concern about wildfires.