Severe winds reaching speeds of as high as 155km/h (96mph) have caused around 90,000 households without power and forced agencies to call off over 100 flights, according to domestic outlets.
The gales are influencing the complete South Island and southern parts of the North Island, as stated by the weather forecasting body.
New Zealand authorities have issued infrequent red wind warnings - the most severe warning - in core zones including Canterbury and Wellington.
Residents have been encouraged to stay indoors, avoid travel, and prepare for more electricity and network failures.
Broad Damage and Crisis Measures
The electricity loss is primarily influencing residences mostly in the southern region, though agencies state that the electricity supply was being restored progressively.
Regional news have indicated that in various locations structures have suffered roof damage, while trees and electricity poles have been brought down by the gusts.
In Wellington, a individual was lost his life after being impacted by a falling limb at a frequent walking route on Tuesday.
Additionally in the city, a female was blown onto oncoming traffic on a thoroughfare by a powerful blast, in a event that was filmed in a widely shared car camera footage.
Flights in and out of the metropolis have been cancelled because of the gusts, and certain highways and community centers are not operating.
Simultaneously local leaders have announced a crisis declaration, to assist emergency management operations.
Strike Action Alongside Severe Weather
The powerful gales on Thursday come as tens of thousands of teachers, doctors and other public workers take part in what has been described as a "mega strike", calling for improved salaries and workplace environments.
But the extreme weather has pressured them to modify certain arrangements, with various open-air gatherings moved indoors or cancelled.
Comparable winds are also sweeping the neighboring country, causing a heatwave to the remote areas.
Agencies have announced flame prohibitions for concern about forest fires.
