Severe gusts attaining speeds of as high as 155km/h (96mph) have resulted in around 90,000 homes lacking electricity and forced officials to cancel in excess of 100 aircraft departures, as reported by domestic outlets.
The gales are impacting the whole southern region and lower areas of the North Island, according to the weather forecasting body.
The nation's agencies have released infrequent red wind warnings - the highest alert level - in core zones encompassing Wellington and Canterbury.
Locals have been advised to stay indoors, stay off roads, and make arrangements for more utility disruptions.
Extensive Impact and Emergency Response
The power cut appears to be affecting residences mostly in the South Island, while agencies say that power was being restored progressively.
Local media have reported that in some places structures have suffered roof damage, whereas power lines and trees have been knocked down by the gusts.
In Wellington, a person was fatally injured after being hit by a wooden fragment at a frequent walking route on Tuesday.
Meanwhile in Wellington, a female was blown onto moving cars on a thoroughfare by a strong gust of wind, in a event that was filmed in a viral dashcam video.
Air travel in and out of the urban area have been suspended because of the winds, while certain highways and community centers are not operating.
At the same time Canterbury officials have announced a crisis declaration, to assist recovery activities.
Labor Protests Amid 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 "mega strike", requesting better pay and working conditions.
But the extreme weather has compelled them to modify certain arrangements, with several external protests relocated inside or called off.
Similar gusts are impacting the neighboring country, bringing a high-temperature event to the country's outback.
Authorities have announced burning restrictions for apprehension regarding bushfires.
