Severe winds attaining speeds of as high as 155km/h (96mph) have resulted in nearly 90,000 properties experiencing outages and compelled authorities to cancel more than 100 aircraft departures, based on domestic outlets.
These gusts are impacting the whole southern region and lower areas of the North Island, according to the national weather agency.
The nation's agencies have issued infrequent severe gust advisories - the top caution category - in key areas including Wellington and Canterbury.
Residents have been encouraged to stay indoors, refrain from journeys, and get ready for more utility disruptions.
Extensive Damage and Crisis Response
The electricity loss seems to be impacting households predominantly in the southern region, while authorities state that the electricity supply was being restored progressively.
Regional news have stated that in various locations homes have lost their roofs, whereas power lines and trees have been knocked down by the winds.
Across Wellington, a person was killed after being hit by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a female was pushed toward approaching vehicles on a road by a strong gust of wind, in a event that was filmed in a viral dashcam video.
Flights in and out of the city have been cancelled because of the weather, while various routes and public facilities are also closed.
Simultaneously local leaders have announced a emergency situation, to support disaster response efforts.
Work Stoppages Alongside Extreme Conditions
The powerful gales on today occur while many of educators, medical professionals and government employees take part in what has been termed a "significant labor action", demanding improved salaries and workplace environments.
Yet the severe conditions has pressured them to change various scheduled activities, with several external protests shifted to interior venues or cancelled.
Similar gusts are affecting Australia, causing a period of extreme heat to the remote areas.
Officials have issued burning restrictions for fear of bushfires.