Intense winds attaining velocities of approximately 155km/h (96mph) have left around 90,000 properties experiencing outages and led officials to call off in excess of 100 aircraft departures, according to regional news sources.
The gales are influencing the whole southern region and southern sections of the North Island, according to the national weather agency.
The nation's agencies have issued uncommon severe gust advisories - the highest alert level - in core zones such as Canterbury and Wellington.
Residents have been advised to stay indoors, refrain from journeys, and prepare for additional utility disruptions.
Extensive Damage and Emergency Measures
The power cut appears to be affecting residences mostly in the South Island, though authorities say that the electricity supply was being slowly brought back.
Local media have indicated that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been brought down by the gusts.
Across Wellington, a man was fatally injured after being struck by a tree branch at a popular trail walking spot on earlier this week.
Also in the capital, a female was blown onto oncoming traffic on a road by a intensive burst, in a event that was captured in a widely shared car camera footage.
Aircraft services to and from the urban area have been suspended due to the gusts, whereas various routes and public facilities are shut down.
At the same time local leaders have issued a state of emergency, to assist recovery activities.
Labor Protests Alongside Extreme Conditions
The powerful gales on today coincide with many of teachers, doctors and other public workers take part in what has been termed a "major walkout", calling for improved salaries and workplace environments.
Yet the severe conditions has forced them to modify some of their plans, with some outdoor rallies moved indoors or called off.
Like conditions are impacting the nearby nation, causing a high-temperature event to the remote areas.
Officials have announced fire bans for fear of forest fires.
