Intense gusts reaching velocities of up to 155km/h (96mph) have left around 90,000 homes lacking electricity and compelled authorities to cancel over 100 flights, as reported by local media.
The gales are influencing the complete southern region and lower areas of the North Island, as stated by the national weather agency.
New Zealand authorities have released rare red wind warnings - the top caution category - in central regions including these major districts.
People have been advised to stay indoors, refrain from journeys, and prepare for additional electricity and network failures.
Extensive Impact and Crisis Measures
The power cut is primarily influencing households predominantly in the southern region, while officials say that the electricity supply was being gradually reinstated.
Regional news have indicated that in some places structures have suffered roof damage, whereas utility poles and vegetation have been toppled by the gusts.
In Wellington, a person was fatally injured after being hit by a falling limb at a frequent walking route on earlier this week.
Also in the capital, a individual was blown onto moving cars on a road by a strong gust of wind, in a event that was captured in a widely shared car camera footage.
Aircraft services in and out of the city have been suspended as a result of the winds, whereas various routes and public facilities are also closed.
At the same time Canterbury officials have announced a emergency situation, to assist recovery activities.
Strike Action Alongside Extreme Conditions
These intense gusts on this day come as tens of thousands of educators, medical professionals and government employees are engaged in what has been termed a "major walkout", requesting better pay and working conditions.
But the extreme weather has pressured them to change some of their plans, with some outdoor rallies moved indoors or abandoned.
Similar gusts are also sweeping the nearby nation, bringing a high-temperature event to the nation's interior regions.
Agencies have announced flame prohibitions for fear of forest fires.