Severe winds attaining speeds of approximately 155km/h (96mph) have caused nearly 90,000 properties experiencing outages and compelled officials to halt more than 100 flights, as reported by local media.
The winds are impacting the complete South Island and southern sections of the northern region, according to the weather forecasting body.
New Zealand authorities have announced rare severe gust advisories - the most severe warning - in key areas including Wellington and Canterbury.
People have been encouraged to remain inside, refrain from journeys, and get ready for additional power and communication outages.
Broad Impact and Crisis Response
This outage appears to be affecting residences predominantly in the southern region, although officials state that energy was being slowly brought back.
Domestic outlets have stated that in certain areas structures have suffered roof damage, and power lines and trees have been toppled by the gales.
In Wellington, a man was fatally injured after being hit by a tree branch at a popular trail walking spot on earlier this week.
Also in the capital, a individual was blown onto moving cars on a street by a strong gust of wind, in a event that was captured in a popular vehicle recording.
Flights to and from the urban area have been halted because of the winds, and various routes and public facilities are also closed.
At the same time local leaders have declared a state of emergency, to assist recovery activities.
Strike Action During Harsh Weather
These intense gusts on this day occur while many of teachers, doctors and other public workers are engaged in what has been termed a "mega strike", demanding improved salaries and workplace environments.
Yet the severe conditions has forced them to change some of their plans, with several external protests moved indoors or cancelled.
Similar gusts are also sweeping the nearby nation, ushering in a heatwave to the country's outback.
Agencies have announced flame prohibitions for fear of wildfires.