Intense gusts attaining speeds of up to 155km/h (96mph) have caused around 90,000 properties lacking electricity and compelled agencies to call off over 100 aircraft departures, as reported by domestic outlets.
The gales are affecting the complete southern region and southern parts of the North Island, per the national weather agency.
Officials in New Zealand have announced rare red wind warnings - the most severe warning - in core zones including these major districts.
Residents have been advised to avoid going outside, refrain from journeys, and prepare for additional utility disruptions.
Widespread Destruction and Crisis Measures
The power cut is primarily influencing households mostly in the South Island, while agencies state that the electricity supply was being restored progressively.
Local media have indicated that in various locations structures have suffered roof damage, while trees and electricity poles have been knocked down by the winds.
Within the capital, a man was killed after being struck by a falling limb at a popular trail walking spot on Tuesday.
Additionally in the city, a woman was blown onto approaching vehicles on a street by a intensive burst, in a event that was filmed in a widely shared car camera footage.
Flights in and out of the metropolis have been suspended as a result of the gusts, whereas various routes and public facilities are also closed.
At the same time local leaders have declared a emergency situation, to facilitate recovery activities.
Labor Protests Amid Harsh Weather
These intense gusts on this day occur while numerous of school staff, physicians and civil servants are engaged in what has been termed a "significant labor action", requesting improved salaries and workplace environments.
However the extreme weather has pressured them to alter certain arrangements, with several external protests relocated inside or cancelled.
Similar gusts are impacting Australia, causing a heatwave to the country's outback.
Authorities have announced fire bans for concern about forest fires.