Severe winds reaching velocities of approximately 155km/h (96mph) have left nearly 90,000 properties lacking electricity and led agencies to halt in excess of 100 aircraft departures, as reported by domestic outlets.
The gales are influencing the whole South Island and lower areas of the North Island, as stated by the national weather agency.
Officials in New Zealand have released uncommon severe gust advisories - the highest alert level - in core zones including Canterbury and Wellington.
Locals have been advised to avoid going outside, refrain from journeys, and get ready for additional utility disruptions.
Broad Impact and Crisis Measures
This outage is primarily influencing households predominantly in the South Island, though officials say that the electricity supply was being slowly brought back.
Domestic outlets have reported that in certain areas structures have suffered roof damage, and power lines and trees have been knocked down by the gusts.
In Wellington, a man was killed after being struck by a tree branch at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a individual was blown onto moving cars on a thoroughfare by a strong gust of wind, in a moment that was filmed in a popular vehicle recording.
Aircraft services to and from the metropolis have been cancelled due to the winds, while some roads and libraries are shut down.
Simultaneously authorities in Canterbury have issued a state of emergency, to support disaster response efforts.
Labor Protests Amid Harsh Conditions
These intense gusts on Thursday coincide with tens of thousands of school staff, physicians and civil servants are engaged in what has been called a "mega strike", requesting higher wages and enhanced employment terms.
However the intense climate has pressured them to alter various scheduled activities, with several external protests shifted to interior venues or cancelled.
Similar gusts are also sweeping the nearby nation, bringing a high-temperature event to the nation's interior regions.
Agencies have issued fire bans for concern about forest fires.