Intense gusts attaining speeds of as high as 155km/h (96mph) have left approximately 90,000 properties experiencing outages and led agencies to call off more than 100 air travel services, according to local media.
The gales are affecting the whole South Island and southern sections of the northern region, per the country's meteorological service.
The nation's agencies have announced rare high-level wind alerts - the top caution category - in central regions including Canterbury and Wellington.
People have been encouraged to remain inside, refrain from journeys, and get ready for further utility disruptions.
Widespread Destruction and Crisis Measures
The power cut appears to be affecting households predominantly in the southern region, though authorities say that the electricity supply was being restored progressively.
Regional news have stated that in some places roofs have been ripped off houses, whereas power lines and trees have been toppled by the gales.
In Wellington, a man was lost his life after being hit by a falling limb at a popular trail walking spot on earlier this week.
Also in the capital, a woman was blown onto approaching vehicles on a street by a intensive burst, in a event that was filmed in a viral dashcam video.
Air travel to and from the urban area have been cancelled as a result of the winds, whereas various routes and public facilities are shut down.
Meanwhile Canterbury officials have issued a crisis declaration, to support emergency management operations.
Work Stoppages During Harsh Weather
The wild winds on Thursday occur while many of teachers, doctors and other public workers are participating in what has been termed a "major walkout", demanding improved salaries and workplace environments.
But the severe conditions has compelled them to alter certain arrangements, with several external protests shifted to interior venues or called off.
Similar gusts are impacting the neighboring country, ushering in a heatwave to the country's outback.
Agencies have declared burning restrictions for concern about forest fires.
