Intense gusts hitting velocities of approximately 155km/h (96mph) have resulted in approximately 90,000 homes without power and led agencies to halt more than 100 aircraft departures, according to regional news sources.
The gales are affecting the whole southern region and southern sections of the northern region, per the country's meteorological service.
New Zealand authorities have announced infrequent red wind warnings - the top caution category - in central regions encompassing these major districts.
Residents have been urged to stay indoors, stay off roads, and prepare for further utility disruptions.
Extensive Impact and Emergency Response
The power cut is primarily influencing households mainly in the South Island, while officials report that the electricity supply was being slowly brought back.
Regional news have indicated that in various locations structures have suffered roof damage, while utility poles and vegetation have been toppled by the gusts.
Within the capital, a person was killed after being impacted by a wooden fragment at a popular trail walking spot on earlier this week.
Also in the capital, a woman was swept into approaching vehicles on a thoroughfare by a intensive burst, in a moment that was filmed in a widely shared car camera footage.
Air travel to and from the urban area have been cancelled because of the weather, whereas some roads and libraries are shut down.
Meanwhile authorities in Canterbury have announced a crisis declaration, to support disaster response efforts.
Work Stoppages Amid Harsh Weather
The wild winds on Thursday occur while tens of thousands of school staff, physicians and civil servants are engaged in what has been called a "major walkout", calling for improved salaries and workplace environments.
But the severe conditions has compelled them to alter various scheduled activities, with several external protests shifted to interior venues or called off.
Comparable winds are also sweeping the neighboring country, bringing a period of extreme heat to the nation's interior regions.
Officials have announced fire bans for fear of bushfires.
