Powerful gusts attaining speeds of up to 155km/h (96mph) have resulted in nearly 90,000 households experiencing outages and led agencies to halt more than 100 air travel services, based on domestic outlets.
The winds are influencing the complete southern region and southern parts of the North Island, according to the national weather agency.
Officials in New Zealand have issued uncommon severe gust advisories - the most severe warning - in key areas such as these major districts.
People have been advised to remain inside, avoid travel, and prepare for further power and communication outages.
Broad Impact and Emergency Measures
The electricity loss appears to be affecting homes predominantly in the South Island, while authorities report that the electricity supply was being gradually reinstated.
Regional news have indicated that in various locations structures have suffered roof damage, while utility poles and vegetation have been knocked down by the winds.
Across Wellington, a individual was fatally injured after being impacted by a tree branch at a frequent walking route on Tuesday.
Additionally in the city, a individual was blown onto oncoming traffic on a thoroughfare by a intensive burst, in a incident that was captured in a popular vehicle recording.
Air travel to and from the metropolis have been cancelled as a result of the weather, whereas various routes and public facilities are not operating.
Simultaneously Canterbury officials have declared a state of emergency, to support emergency management operations.
Strike Action Amid Severe Weather
The wild winds on Thursday come as numerous of teachers, doctors and other public workers are engaged in what has been called a "significant labor action", demanding higher wages and enhanced employment terms.
However the severe conditions has pressured them to modify various scheduled activities, with several external protests relocated inside or called off.
Like conditions are affecting Australia, bringing a high-temperature event to the nation's interior regions.
Agencies have announced flame prohibitions for concern about forest fires.