Intense gales hitting speeds of as high as 155km/h (96mph) have left nearly 90,000 properties lacking electricity and compelled officials to cancel over 100 air travel services, based on local media.
The winds are affecting the whole South Island and lower areas of the North Island, as stated by the country's meteorological service.
New Zealand authorities have released infrequent high-level wind alerts - the highest alert level - in key areas such as Wellington and Canterbury.
Residents have been encouraged to stay indoors, avoid travel, and make arrangements for more electricity and network failures.
Widespread Destruction and Emergency Measures
This outage seems to be impacting homes mostly in the South Island, though agencies state that energy was being slowly brought back.
Domestic outlets have stated that in certain areas structures have suffered roof damage, whereas utility poles and vegetation have been brought down by the gusts.
Across Wellington, a man was fatally injured after being hit by a wooden fragment at a well-known hiking path on Tuesday.
Additionally in the city, a woman was swept into approaching vehicles on a street by a powerful blast, in a moment that was captured in a viral dashcam video.
Aircraft services entering and leaving the urban area have been cancelled as a result of the gusts, whereas some roads and libraries are not operating.
Meanwhile Canterbury officials have declared a crisis declaration, to facilitate recovery activities.
Strike Action Alongside Harsh Weather
These intense gusts on Thursday coincide with many of school staff, physicians and civil servants take part in what has been described as a "significant labor action", demanding better pay and working conditions.
But the intense climate has compelled them to alter some of their plans, with various open-air gatherings moved indoors or called off.
Similar gusts are affecting the neighboring country, ushering in a high-temperature event to the remote areas.
Agencies have declared flame prohibitions for fear of wildfires.
