Intense gusts attaining velocities of as high as 155km/h (96mph) have caused around 90,000 properties experiencing outages and led agencies to cancel more than 100 aircraft departures, as reported by local media.
The gales are affecting the complete southern region and southern parts of the North Island, as stated by the national weather agency.
The nation's agencies have released uncommon high-level wind alerts - the highest alert level - in core zones encompassing Wellington and Canterbury.
Locals have been urged to remain inside, refrain from journeys, and make arrangements for additional power and communication outages.
Widespread Impact and Crisis Measures
The electricity loss is primarily influencing residences mainly in the southern region, while agencies state that energy was being slowly brought back.
Local media have indicated that in various locations structures have suffered roof damage, while utility poles and vegetation have been toppled by the gales.
Across Wellington, a man was fatally injured after being hit by a falling limb at a well-known hiking path on Tuesday.
Also in the capital, a woman was blown onto moving cars on a thoroughfare by a intensive burst, in a incident that was filmed in a widely shared car camera footage.
Aircraft services to and from the metropolis have been halted due to the gusts, and some roads and libraries are not operating.
Simultaneously Canterbury officials have announced a state of emergency, to support emergency management operations.
Strike Action Alongside Extreme Weather
These intense gusts on this day occur while numerous of school staff, physicians and civil servants take part in what has been described as a "significant labor action", requesting higher wages and enhanced employment terms.
Yet the intense climate has forced them to change some of their plans, with some outdoor rallies moved indoors or abandoned.
Similar gusts are affecting the nearby nation, ushering in a heatwave to the country's outback.
Agencies have declared flame prohibitions for fear of wildfires.
