Intense winds hitting speeds of as high as 155km/h (96mph) have caused around 90,000 properties without power and compelled officials to call off over 100 flights, as reported by domestic outlets.
The winds are affecting the whole South Island and southern parts of the North Island, per the weather forecasting body.
Officials in New Zealand have released rare red wind warnings - the most severe warning - in central regions such as these major districts.
People have been encouraged to remain inside, avoid travel, and get ready for further electricity and network failures.
Extensive Impact and Crisis Measures
The electricity loss appears to be affecting residences mainly in the southern region, though agencies report that power was being gradually reinstated.
Regional news have stated that in various locations homes have lost their roofs, whereas utility poles and vegetation have been toppled by the gusts.
Across Wellington, a person was killed after being hit by a tree branch at a well-known hiking path on Tuesday.
Meanwhile in Wellington, a female was swept into moving cars on a street by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Air travel entering and leaving the city have been suspended due to the gusts, and various routes and public facilities are also closed.
Meanwhile Canterbury officials have announced a crisis declaration, to assist disaster response efforts.
Strike Action Amid Extreme Weather
The powerful gales on this day occur while many of school staff, physicians and civil servants are participating in what has been called a "major walkout", demanding higher wages and enhanced employment terms.
Yet the extreme weather has compelled them to alter certain arrangements, with several external protests shifted to interior venues or cancelled.
Like conditions are impacting the neighboring country, bringing a high-temperature event to the country's outback.
Agencies have announced burning restrictions for concern about bushfires.
