Intense gales attaining speeds of up to 155km/h (96mph) have left around 90,000 properties without power and forced agencies to cancel more than 100 air travel services, according to regional news sources.
The winds are impacting the complete South Island and southern parts of the North Island, as stated by the weather forecasting body.
New Zealand authorities have released infrequent high-level wind alerts - the highest alert level - in key areas including Wellington and Canterbury.
Residents have been advised to stay indoors, avoid travel, and prepare for further power and communication outages.
Broad Destruction and Emergency Measures
The electricity loss is primarily influencing residences predominantly in the southern region, although agencies state that energy was being restored progressively.
Local media have reported that in various locations roofs have been ripped off houses, and utility poles and vegetation have been knocked down by the winds.
Within the capital, a person was fatally injured after being impacted by a tree branch at a popular trail walking spot on earlier this week.
Additionally in the city, a woman was pushed toward approaching vehicles on a street by a powerful blast, in a moment that was captured in a viral dashcam video.
Aircraft services entering and leaving the metropolis have been cancelled due to the winds, while various routes and public facilities are not operating.
At the same time Canterbury officials have announced a state of emergency, to facilitate recovery activities.
Strike Action Alongside Severe Weather
These intense gusts on Thursday come as many of school staff, physicians and civil servants take part in what has been described as a "major walkout", demanding improved salaries and workplace environments.
However the intense climate has forced them to alter some of their plans, with various open-air gatherings shifted to interior venues or abandoned.
Similar gusts are impacting Australia, ushering in a high-temperature event to the nation's interior regions.
Agencies have issued burning restrictions for fear of wildfires.
