Powerful gales hitting speeds of up to 155km/h (96mph) have resulted in approximately 90,000 properties lacking electricity and forced officials to halt over 100 flights, as reported by regional news sources.
The gales are affecting the entire South Island and southern parts of the North Island, according to the country's meteorological service.
New Zealand authorities have issued rare red wind warnings - the most severe warning - in core zones encompassing Wellington and Canterbury.
People have been advised to remain inside, avoid travel, and prepare for further utility disruptions.
Extensive Destruction and Emergency Measures
The power cut seems to be impacting homes mostly in the southern region, though authorities report that the electricity supply was being gradually reinstated.
Local media have stated that in some places structures have suffered roof damage, whereas power lines and trees have been brought down by the gusts.
In Wellington, a person was killed after being struck by a falling limb at a well-known hiking path on earlier this week.
Additionally in the city, a female was swept into approaching vehicles on a road by a strong gust of wind, in a moment that was captured in a viral dashcam video.
Flights entering and leaving the metropolis have been halted due to the winds, while some roads and libraries are also closed.
Simultaneously local leaders have issued a emergency situation, to facilitate recovery activities.
Strike Action Amid Harsh Conditions
The wild winds on this day occur while many of teachers, doctors and other public workers are engaged in what has been termed a "major walkout", calling for better pay and working conditions.
However the severe conditions has pressured them to change some of their plans, with some outdoor rallies relocated inside or abandoned.
Comparable winds are impacting the neighboring country, ushering in a high-temperature event to the country's outback.
Agencies have declared fire bans for concern about forest fires.