Intense gusts reaching speeds of approximately 155km/h (96mph) have resulted in approximately 90,000 homes without power and compelled officials to halt more than 100 flights, based on regional news sources.
The gales are affecting the whole South Island and southern parts of the North Island, according to the national weather agency.
New Zealand authorities have announced uncommon high-level wind alerts - the most severe warning - in key areas encompassing Canterbury and Wellington.
Residents have been urged to remain inside, avoid travel, and prepare for further utility disruptions.
Widespread Destruction and Crisis Measures
The electricity loss appears to be affecting homes mostly in the South Island, though authorities say that energy was being restored progressively.
Domestic outlets have indicated that in some places structures have suffered roof damage, and trees and electricity poles have been knocked down by the gales.
Within the capital, a man was lost his life after being struck by a wooden fragment at a frequent walking route on Tuesday.
Also in the capital, a individual was pushed toward moving cars on a road by a powerful blast, in a moment that was captured in a viral dashcam video.
Air travel to and from the city have been cancelled due to the gusts, while various routes and public facilities are also closed.
Meanwhile local leaders have announced a crisis declaration, to support recovery activities.
Labor Protests Amid Extreme Conditions
These intense gusts on today come as many of school staff, physicians and civil servants take part in what has been termed a "major walkout", requesting higher wages and enhanced employment terms.
However the severe conditions has compelled them to alter various scheduled activities, with some outdoor rallies moved indoors or called off.
Comparable winds are impacting the nearby nation, bringing a high-temperature event to the country's outback.
Authorities have declared fire bans for concern about bushfires.
