Intense gusts attaining speeds of approximately 155km/h (96mph) have resulted in around 90,000 properties experiencing outages and forced officials to cancel more than 100 air travel services, as reported by local media.
The gales are affecting the whole South Island and southern parts of the northern region, per the country's meteorological service.
Officials in New Zealand have announced infrequent red wind warnings - the highest alert level - in core zones such as these major districts.
Locals have been urged to stay indoors, avoid travel, and make arrangements for additional electricity and network failures.
Broad Impact and Emergency Response
The electricity loss seems to be impacting homes predominantly in the southern region, although agencies state that the electricity supply was being gradually reinstated.
Local media have stated that in certain areas homes have lost their roofs, and utility poles and vegetation have been knocked down by the gales.
Across Wellington, a person was killed after being impacted by a falling limb at a popular trail walking spot on earlier this week.
Meanwhile in Wellington, a woman was pushed toward oncoming traffic on a road by a strong gust of wind, in a event that was recorded in a widely shared car camera footage.
Air travel in and out of the city have been halted because of the gusts, while some roads and libraries are not operating.
Meanwhile authorities in Canterbury have announced a crisis declaration, to support disaster response efforts.
Strike Action Alongside Severe Weather
The wild winds on Thursday come as tens of thousands of school staff, physicians and civil servants are engaged in what has been termed a "major walkout", requesting improved salaries and workplace environments.
Yet the severe conditions has pressured them to change certain arrangements, with several external protests relocated inside or abandoned.
Like conditions are also sweeping the neighboring country, causing a high-temperature event to the nation's interior regions.
Authorities have announced flame prohibitions for fear of forest fires.
