Powerful gusts attaining velocities of approximately 155km/h (96mph) have caused nearly 90,000 properties without power and compelled authorities to halt over 100 air travel services, based on regional news sources.
The gales are impacting the whole southern region and southern sections of the North Island, per the weather forecasting body.
New Zealand authorities have released uncommon red wind warnings - the most severe warning - in central regions encompassing Canterbury and Wellington.
Residents have been advised to avoid going outside, refrain from journeys, and prepare for further power and communication outages.
Extensive Destruction and Emergency Response
The electricity loss appears to be affecting residences mostly in the South Island, though officials report that power was being slowly brought back.
Regional news have reported that in various locations roofs have been ripped off houses, whereas utility poles and vegetation have been toppled by the gusts.
Within the capital, a man was fatally injured after being hit by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a woman was blown onto moving cars on a street by a strong gust of wind, in a incident that was recorded in a viral dashcam video.
Air travel in and out of the metropolis have been halted due to the gusts, whereas some roads and libraries are shut down.
Meanwhile authorities in Canterbury have announced a crisis declaration, to assist recovery activities.
Strike Action During Extreme Conditions
The wild winds on this day occur while many of educators, medical professionals and government employees are participating in what has been described as a "significant labor action", requesting better pay and working conditions.
But the severe conditions has pressured them to change some of their plans, with some outdoor rallies shifted to interior venues or called off.
Similar gusts are also sweeping the neighboring country, causing a high-temperature event to the remote areas.
Agencies have issued flame prohibitions for fear of bushfires.