Powerful gales reaching velocities of up to 155km/h (96mph) have caused nearly 90,000 homes experiencing outages and compelled authorities to halt more than 100 flights, according to domestic outlets.
The gales are affecting the complete South Island and southern parts of the North Island, per the national weather agency.
New Zealand authorities have issued infrequent high-level wind alerts - the top caution category - in central regions including these major districts.
People have been advised to avoid going outside, refrain from journeys, and get ready for further utility disruptions.
Broad Damage and Emergency Response
The electricity loss is primarily influencing homes mostly in the southern region, though authorities state that energy was being restored progressively.
Local media have indicated that in some places structures have suffered roof damage, and power lines and trees have been brought down by the winds.
Within the capital, a man was fatally injured after being struck by a wooden fragment at a frequent walking route on earlier this week.
Additionally in the city, a individual was pushed toward moving cars on a street by a powerful blast, in a event that was captured in a widely shared car camera footage.
Flights entering and leaving the metropolis have been suspended due to the winds, while some roads and libraries are also closed.
At the same time local leaders have issued a state of emergency, to facilitate disaster response efforts.
Labor Protests During Harsh Weather
These intense gusts on Thursday come as tens of thousands of school staff, physicians and civil servants are participating in what has been called a "mega strike", demanding better pay and working conditions.
However the extreme weather has compelled them to modify various scheduled activities, with some outdoor rallies relocated inside or abandoned.
Similar gusts are impacting Australia, ushering in a heatwave to the nation's interior regions.
Authorities have announced flame prohibitions for apprehension regarding forest fires.
