Powerful winds attaining speeds of up to 155km/h (96mph) have left around 90,000 properties lacking electricity and compelled agencies to call off over 100 flights, based on regional news sources.
The gales are impacting the entire South Island and southern sections of the North Island, according to the national weather agency.
Officials in New Zealand have issued uncommon red wind warnings - the highest alert level - in central regions such as Wellington and Canterbury.
People have been encouraged to avoid going outside, refrain from journeys, and get ready for additional electricity and network failures.
Broad Impact and Crisis Measures
This outage seems to be impacting households mainly in the South Island, while authorities report that the electricity supply was being gradually reinstated.
Local media have reported that in various locations structures have suffered roof damage, whereas utility poles and vegetation have been toppled by the gusts.
Within the capital, a individual was killed after being struck by a tree branch at a popular trail walking spot on Tuesday.
Additionally in the city, a woman was blown onto approaching vehicles on a road by a powerful blast, in a incident that was captured in a viral dashcam video.
Air travel to and from the urban area have been cancelled as a result of the gusts, and various routes and public facilities are shut down.
Meanwhile Canterbury officials have announced a emergency situation, to support disaster response efforts.
Labor Protests Amid Harsh Conditions
The wild winds on Thursday occur while tens of thousands of school staff, physicians and civil servants are participating in what has been termed a "major walkout", requesting better pay and working conditions.
But the extreme weather has forced them to modify some of their plans, with various open-air gatherings relocated inside or cancelled.
Like conditions are affecting the nearby nation, bringing a heatwave to the country's outback.
Officials have issued flame prohibitions for concern about forest fires.
