Powerful gusts hitting speeds of as high as 155km/h (96mph) have caused approximately 90,000 properties without power and forced authorities to call off over 100 flights, according to regional news sources.
The gales are affecting the entire southern region and lower areas of the North Island, according to the country's meteorological service.
The nation's agencies have announced uncommon red wind warnings - the top caution category - in central regions such as Canterbury and Wellington.
People have been advised to stay indoors, stay off roads, and get ready for additional electricity and network failures.
Widespread Damage and Emergency Measures
The electricity loss appears to be affecting homes predominantly in the southern region, though authorities report that energy was being restored progressively.
Domestic outlets have stated that in some places homes have lost their roofs, and power lines and trees have been knocked down by the gusts.
In Wellington, a individual was fatally injured after being hit by a tree branch at a well-known hiking path on earlier this week.
Meanwhile in Wellington, a individual was pushed toward approaching vehicles on a street by a powerful blast, in a incident that was recorded in a widely shared car camera footage.
Flights in and out of the city have been halted due to the gusts, whereas various routes and public facilities are also closed.
Meanwhile Canterbury officials have announced a crisis declaration, to assist disaster response efforts.
Strike Action During Extreme Conditions
The powerful gales on this day coincide with tens of thousands of school staff, physicians and civil servants are participating in what has been called a "major walkout", demanding improved salaries and workplace environments.
Yet the severe conditions has forced them to modify certain arrangements, with various open-air gatherings shifted to interior venues or cancelled.
Comparable winds are impacting the nearby nation, bringing a period of extreme heat to the nation's interior regions.
Agencies have issued burning restrictions for apprehension regarding bushfires.
