Intense gusts attaining speeds of approximately 155km/h (96mph) have left approximately 90,000 properties without power and led agencies to halt over 100 air travel services, according to domestic outlets.
The winds are affecting the entire South Island and southern parts of the North Island, per the country's meteorological service.
Officials in New Zealand have released infrequent red wind warnings - the highest alert level - in central regions including Canterbury and Wellington.
Locals have been urged to avoid going outside, avoid travel, and prepare for additional utility disruptions.
Extensive Impact and Emergency Response
This outage seems to be impacting households mainly in the southern region, although authorities report that the electricity supply was being slowly brought back.
Regional news have indicated that in various locations structures have suffered roof damage, while utility poles and vegetation have been brought down by the gales.
In Wellington, a man was killed after being hit by a tree branch at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was pushed toward approaching vehicles on a thoroughfare by a powerful blast, in a event that was captured in a viral dashcam video.
Flights to and from the urban area have been suspended due to the weather, and various routes and public facilities are shut down.
Meanwhile local leaders have announced a state of emergency, to assist disaster response efforts.
Labor Protests During Extreme Conditions
These intense gusts on today occur while many of educators, medical professionals and government employees are participating in what has been described as a "major walkout", requesting improved salaries and workplace environments.
But the severe conditions has forced them to modify various scheduled activities, with some outdoor rallies moved indoors or cancelled.
Similar gusts are affecting the nearby nation, causing a period of extreme heat to the country's outback.
Authorities have issued burning restrictions for apprehension regarding bushfires.
