Severe winds hitting velocities of approximately 155km/h (96mph) have resulted in around 90,000 households experiencing outages and compelled agencies to halt more than 100 flights, based on domestic outlets.
The gales are influencing the whole South Island and southern parts of the North Island, as stated by the country's meteorological service.
New Zealand authorities have released uncommon severe gust advisories - the most severe warning - in central regions encompassing Canterbury and Wellington.
People have been advised to avoid going outside, avoid travel, and make arrangements for more utility disruptions.
Extensive Damage and Emergency Measures
The power cut is primarily influencing households predominantly in the South Island, while authorities state that energy was being restored progressively.
Regional news have indicated that in some places homes have lost their roofs, while utility poles and vegetation have been brought down by the winds.
Across Wellington, a man was fatally injured after being hit by a falling limb at a well-known hiking path on Tuesday.
Also in the capital, a woman was swept into approaching vehicles on a street by a intensive burst, in a event that was filmed in a viral dashcam video.
Flights entering and leaving the urban area have been halted as a result of the weather, and certain highways and community centers are not operating.
Simultaneously authorities in Canterbury have declared a emergency situation, to facilitate recovery activities.
Labor Protests Amid Extreme Conditions
The powerful gales on this day come as tens of thousands of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", requesting better pay and working conditions.
But the extreme weather has pressured them to modify certain arrangements, with various open-air gatherings relocated inside or cancelled.
Like conditions are affecting Australia, ushering in a high-temperature event to the remote areas.
Agencies have declared flame prohibitions for fear of wildfires.