Intense gusts attaining speeds of approximately 155km/h (96mph) have caused nearly 90,000 properties experiencing outages and compelled officials to halt more than 100 aircraft departures, according to local media.
These gusts are affecting the complete southern region and southern parts of the northern region, according to the national weather agency.
New Zealand authorities have issued rare high-level wind alerts - the highest alert level - in key areas such as Wellington and Canterbury.
People have been urged to stay indoors, refrain from journeys, and prepare for additional electricity and network failures.
Widespread Damage and Crisis Measures
The power cut is primarily influencing households mostly in the southern region, while authorities report that power was being restored progressively.
Regional news have indicated that in some places roofs have been ripped off houses, and utility poles and vegetation have been knocked down by the winds.
Across Wellington, a individual was killed after being struck by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a woman was blown onto approaching vehicles on a street by a intensive burst, in a moment that was recorded in a widely shared car camera footage.
Flights to and from the city have been cancelled because of the gusts, whereas some roads and libraries are shut down.
Simultaneously Canterbury officials have declared a state of emergency, to facilitate recovery activities.
Work Stoppages During Harsh Conditions
The powerful gales on this day occur while many of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", demanding improved salaries and workplace environments.
But the intense climate has forced them to modify certain arrangements, with various open-air gatherings shifted to interior venues or abandoned.
Like conditions are impacting the nearby nation, ushering in a heatwave to the remote areas.
Agencies have issued flame prohibitions for concern about wildfires.