Intense winds attaining velocities of up to 155km/h (96mph) have resulted in approximately 90,000 properties experiencing outages and forced agencies to call off in excess of 100 air travel services, according to local media.
The gales are affecting the whole South Island and lower areas of the northern region, according to the national weather agency.
Officials in New Zealand have announced rare severe gust advisories - the highest alert level - in key areas encompassing Canterbury and Wellington.
Locals have been urged to stay indoors, avoid travel, and prepare for additional utility disruptions.
Widespread Damage and Crisis Measures
This outage appears to be affecting homes mainly in the southern region, while officials say that energy was being slowly brought back.
Local media have stated that in some places homes have lost their roofs, while utility poles and vegetation have been toppled by the winds.
Within the capital, a man was fatally injured after being hit by a wooden fragment at a frequent walking route on Tuesday.
Additionally in the city, a woman was pushed toward oncoming traffic on a thoroughfare by a strong gust of wind, in a incident that was captured in a popular vehicle recording.
Flights in and out of the metropolis have been cancelled as a result of the gusts, whereas various routes and public facilities are also closed.
Simultaneously authorities in Canterbury have announced a state of emergency, to support disaster response efforts.
Labor Protests During Severe Conditions
The powerful gales on today occur while tens of thousands of school staff, physicians and civil servants take part in what has been termed a "significant labor action", calling for higher wages and enhanced employment terms.
Yet the extreme weather has forced them to alter some of their plans, with some outdoor rallies relocated inside or abandoned.
Like conditions are affecting the neighboring country, bringing a period of extreme heat to the nation's interior regions.
Agencies have announced burning restrictions for concern about forest fires.
