Intense gales reaching velocities of approximately 155km/h (96mph) have resulted in approximately 90,000 homes without power and compelled officials to halt more than 100 aircraft departures, as reported by regional news sources.
These gusts are affecting the complete South Island and southern sections of the North Island, per the country's meteorological service.
The nation's agencies have issued uncommon high-level wind alerts - the most severe warning - in core zones including these major districts.
Residents have been urged to remain inside, stay off roads, and make arrangements for further electricity and network failures.
Extensive Impact and Crisis Response
The power cut is primarily influencing residences predominantly in the southern region, although agencies say that power was being restored progressively.
Local media have indicated that in some places structures have suffered roof damage, while power lines and trees have been toppled by the gales.
Across Wellington, a individual was fatally injured after being struck by a tree branch at a popular trail walking spot on earlier this week.
Additionally in the city, a individual was blown onto oncoming traffic on a thoroughfare by a strong gust of wind, in a event that was filmed in a viral dashcam video.
Flights in and out of the city have been cancelled because of the gusts, while some roads and libraries are also closed.
Simultaneously authorities in Canterbury have declared a emergency situation, to assist disaster response efforts.
Labor Protests Amid Harsh Weather
The wild winds on today come as tens of thousands of school staff, physicians and civil servants take part in what has been termed a "significant labor action", demanding improved salaries and workplace environments.
Yet the extreme weather has compelled them to change some of their plans, with some outdoor rallies shifted to interior venues or cancelled.
Comparable winds are impacting Australia, causing a period of extreme heat to the remote areas.
Officials have declared flame prohibitions for concern about wildfires.