Powerful gales reaching velocities of as high as 155km/h (96mph) have caused around 90,000 homes without power and forced agencies to cancel over 100 flights, according to domestic outlets.
These gusts are impacting the entire South Island and southern parts of the North Island, per the country's meteorological service.
Officials in New Zealand have released infrequent high-level wind alerts - the highest alert level - in core zones including Wellington and Canterbury.
Locals have been encouraged to avoid going outside, stay off roads, and make arrangements for further electricity and network failures.
Widespread Damage and Crisis Response
The electricity loss seems to be impacting homes predominantly in the southern region, although authorities state that energy was being slowly brought back.
Local media have indicated that in various locations structures have suffered roof damage, and utility poles and vegetation have been knocked down by the winds.
Across Wellington, a person was lost his life after being hit by a falling limb at a well-known hiking path on earlier this week.
Also in the capital, a woman was pushed toward approaching vehicles on a street by a intensive burst, in a event that was captured in a popular vehicle recording.
Air travel entering and leaving the urban area have been cancelled because of the weather, whereas various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have announced a emergency situation, to facilitate disaster response efforts.
Work Stoppages Amid Extreme Conditions
The powerful gales on this day coincide with many of educators, medical professionals and government employees are participating in what has been described as a "mega strike", requesting higher wages and enhanced employment terms.
But the intense climate has forced them to modify certain arrangements, with various open-air gatherings moved indoors or cancelled.
Like conditions are also sweeping Australia, bringing a heatwave to the nation's interior regions.
Authorities have announced flame prohibitions for fear of forest fires.