Powerful gales hitting velocities of up to 155km/h (96mph) have resulted in approximately 90,000 households experiencing outages and compelled agencies to cancel more than 100 air travel services, according to regional news sources.
The winds are affecting the whole southern region and lower areas of the northern region, as stated by the national weather agency.
Officials in New Zealand have released infrequent red wind warnings - the top caution category - in core zones including Canterbury and Wellington.
Residents have been advised to avoid going outside, refrain from journeys, and prepare for additional utility disruptions.
Widespread Damage and Crisis Response
The electricity loss appears to be affecting residences mostly in the South Island, although agencies state that the electricity supply was being restored progressively.
Domestic outlets have stated that in various locations structures have suffered roof damage, and trees and electricity poles have been knocked down by the gales.
Across Wellington, a man was killed after being hit by a wooden fragment at a popular trail walking spot on Tuesday.
Additionally in the city, a individual was pushed toward approaching vehicles on a thoroughfare by a intensive burst, in a event that was captured in a viral dashcam video.
Air travel in and out of the metropolis have been halted because of the gusts, while some roads and libraries are not operating.
Meanwhile authorities in Canterbury have announced a emergency situation, to support disaster response efforts.
Strike Action During Harsh Weather
These intense gusts on Thursday occur while tens of thousands of school staff, physicians and civil servants are engaged in what has been called a "significant labor action", requesting better pay and working conditions.
But the severe conditions has pressured them to modify certain arrangements, with various open-air gatherings shifted to interior venues or cancelled.
Like conditions are also sweeping the neighboring country, ushering in a high-temperature event to the country's outback.
Officials have announced burning restrictions for concern about bushfires.