Intense winds attaining speeds of up to 155km/h (96mph) have left around 90,000 homes experiencing outages and compelled officials to cancel over 100 aircraft departures, as reported by domestic outlets.
The winds are affecting the complete South Island and southern parts of the North Island, according to the weather forecasting body.
The nation's agencies have announced uncommon high-level wind alerts - the most severe warning - in central regions encompassing Wellington and Canterbury.
Residents have been advised to remain inside, avoid travel, and get ready for additional utility disruptions.
Broad Destruction and Crisis Response
The power cut appears to be affecting residences mainly in the southern region, while agencies state that the electricity supply was being slowly brought back.
Domestic outlets have stated that in some places structures have suffered roof damage, whereas utility poles and vegetation have been brought down by the winds.
In Wellington, a man was fatally injured after being impacted by a falling limb at a frequent walking route on Tuesday.
Also in the capital, a woman was pushed toward approaching vehicles on a road by a powerful blast, in a moment that was filmed in a viral dashcam video.
Flights to and from the metropolis have been suspended because of the weather, whereas certain highways and community centers are also closed.
Meanwhile local leaders have announced a state of emergency, to facilitate disaster response efforts.
Strike Action Alongside Severe Conditions
These intense gusts on Thursday occur while numerous of school staff, physicians and civil servants are engaged in what has been termed a "major walkout", calling for higher wages and enhanced employment terms.
Yet the severe conditions has forced them to change some of their plans, with several external protests shifted to interior venues or cancelled.
Comparable winds are affecting the nearby nation, ushering in a high-temperature event to the nation's interior regions.
Authorities have announced flame prohibitions for concern about wildfires.
