Severe winds attaining speeds of as high as 155km/h (96mph) have left around 90,000 homes lacking electricity and compelled officials to halt more than 100 air travel services, according to domestic outlets.
The gales are affecting the complete South Island and southern parts of the northern region, according to the national weather agency.
New Zealand authorities have announced infrequent severe gust advisories - the top caution category - in key areas such as these major districts.
Residents have been urged to stay indoors, stay off roads, and make arrangements for additional power and communication outages.
Broad Damage and Crisis Measures
The electricity loss seems to be impacting households mostly in the southern region, while officials say that power was being restored progressively.
Local media have indicated that in various locations homes have lost their roofs, and utility poles and vegetation have been toppled by the winds.
Across Wellington, a man was killed after being impacted by a tree branch at a frequent walking route on Tuesday.
Also in the capital, a individual was pushed toward oncoming traffic on a street by a powerful blast, in a incident that was captured in a popular vehicle recording.
Aircraft services in and out of the urban area have been suspended due to the weather, whereas various routes and public facilities are shut down.
Meanwhile Canterbury officials have announced a emergency situation, to facilitate recovery activities.
Strike Action During Harsh Conditions
These intense gusts on this day come as many of educators, medical professionals and government employees are engaged in what has been described as a "significant labor action", calling for higher wages and enhanced employment terms.
Yet the severe conditions has forced them to modify various scheduled activities, with various open-air gatherings shifted to interior venues or cancelled.
Like conditions are impacting Australia, ushering in a high-temperature event to the nation's interior regions.
Authorities have issued burning restrictions for apprehension regarding wildfires.