Severe gales reaching velocities of approximately 155km/h (96mph) have caused approximately 90,000 households lacking electricity and led authorities to cancel more than 100 flights, as reported by domestic outlets.
These gusts are influencing the complete South Island and lower areas of the North Island, according to the weather forecasting body.
New Zealand authorities have released rare red wind warnings - the top caution category - in core zones including these major districts.
Residents have been advised to remain inside, refrain from journeys, and make arrangements for further electricity and network failures.
Broad Impact and Crisis Response
The electricity loss seems to be impacting homes mainly in the southern region, though agencies report that power was being gradually reinstated.
Regional news have indicated that in certain areas structures have suffered roof damage, whereas utility poles and vegetation have been brought down by the gales.
Within the capital, a man was fatally injured after being struck by a tree branch at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was swept into moving cars on a street by a intensive burst, in a event that was recorded in a widely shared car camera footage.
Flights in and out of the city have been halted because of the winds, while various routes and public facilities are shut down.
Simultaneously local leaders have declared a crisis declaration, to support emergency management operations.
Strike Action During Extreme Weather
The wild winds on today occur while numerous of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", calling for improved salaries and workplace environments.
But the intense climate has pressured them to modify various scheduled activities, with several external protests shifted to interior venues or called off.
Similar gusts are affecting the nearby nation, causing a period of extreme heat to the country's outback.
Officials have declared flame prohibitions for fear of wildfires.
