Intense winds reaching speeds of up to 155km/h (96mph) have caused around 90,000 properties lacking electricity and forced authorities to call off over 100 air travel services, based on regional news sources.
The gales are affecting the complete South Island and southern sections of the North Island, according to the country's meteorological service.
The nation's agencies have issued uncommon high-level wind alerts - the top caution category - in key areas such as these major districts.
Residents have been encouraged to remain inside, refrain from journeys, and prepare for more utility disruptions.
Broad Damage and Emergency Measures
The power cut appears to be affecting residences mainly in the southern region, while agencies report that power was being gradually reinstated.
Domestic outlets have stated that in certain areas roofs have been ripped off houses, and trees and electricity poles have been brought down by the winds.
In Wellington, a man was fatally injured after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a woman was pushed toward oncoming traffic on a thoroughfare by a intensive burst, in a incident that was captured in a widely shared car camera footage.
Air travel to and from the urban area have been suspended as a result of the winds, and various routes and public facilities are not operating.
Simultaneously local leaders have declared a crisis declaration, to support emergency management operations.
Work Stoppages Amid Harsh Weather
The powerful gales on this day occur while many of school staff, physicians and civil servants are engaged in what has been called a "mega strike", calling for higher wages and enhanced employment terms.
Yet the severe conditions has compelled them to change certain arrangements, with some outdoor rallies relocated inside or abandoned.
Like conditions are also sweeping Australia, causing a high-temperature event to the nation's interior regions.
Authorities have issued burning restrictions for fear of bushfires.