Powerful winds attaining velocities of as high as 155km/h (96mph) have caused nearly 90,000 households lacking electricity and compelled officials to cancel over 100 air travel services, according to regional news sources.
These gusts are influencing the complete southern region and lower areas of the northern region, as stated by the weather forecasting body.
The nation's agencies have released uncommon severe gust advisories - the top caution category - in key areas including Canterbury and Wellington.
People have been encouraged to avoid going outside, refrain from journeys, and make arrangements for more electricity and network failures.
Widespread Destruction and Emergency Measures
This outage appears to be affecting households mainly in the South Island, although authorities say that power was being gradually reinstated.
Local media have stated that in certain areas structures have suffered roof damage, while power lines and trees have been knocked down by the gusts.
Across Wellington, a man was fatally injured after being impacted by a falling limb at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a woman was swept into oncoming traffic on a road by a strong gust of wind, in a moment that was recorded in a widely shared car camera footage.
Aircraft services in and out of the urban area have been cancelled due to the gusts, while various routes and public facilities are not operating.
Meanwhile authorities in Canterbury have announced a crisis declaration, to assist emergency management operations.
Strike Action Alongside Harsh Weather
The wild winds on Thursday occur while many of teachers, doctors and other public workers take part in what has been described as a "major walkout", requesting improved salaries and workplace environments.
Yet the severe conditions has compelled them to alter certain arrangements, with some outdoor rallies shifted to interior venues or called off.
Similar gusts are impacting Australia, bringing a heatwave to the remote areas.
Agencies have announced flame prohibitions for apprehension regarding forest fires.