Intense gusts hitting velocities of approximately 155km/h (96mph) have caused nearly 90,000 properties experiencing outages and compelled officials to call off over 100 aircraft departures, according to local media.
The gales are affecting the complete South Island and lower areas of the northern region, according to the country's meteorological service.
Officials in New Zealand have issued infrequent high-level wind alerts - the highest alert level - in central regions including Canterbury and Wellington.
Locals have been urged to stay indoors, refrain from journeys, and prepare for more utility disruptions.
Widespread Destruction and Crisis Measures
The power cut appears to be affecting homes mainly in the southern region, while agencies state that the electricity supply was being gradually reinstated.
Regional news have reported that in various locations structures have suffered roof damage, and utility poles and vegetation have been knocked down by the gales.
Within the capital, a individual was fatally injured after being struck by a wooden fragment at a frequent walking route on earlier this week.
Also in the capital, a individual was pushed toward oncoming traffic on a thoroughfare by a strong gust of wind, in a moment that was filmed in a viral dashcam video.
Aircraft services to and from the city have been halted because of the gusts, while various routes and public facilities are shut down.
At the same time local leaders have declared a state of emergency, to assist recovery activities.
Strike Action Amid Extreme Weather
These intense gusts on today come as tens of thousands of educators, medical professionals and government employees are participating in what has been called a "major walkout", requesting higher wages and enhanced employment terms.
But the severe conditions has forced them to modify certain arrangements, with some outdoor rallies shifted to interior venues or called off.
Comparable winds are also sweeping the nearby nation, bringing a period of extreme heat to the nation's interior regions.
Agencies have issued flame prohibitions for concern about bushfires.
