Severe winds hitting speeds of as high as 155km/h (96mph) have resulted in nearly 90,000 properties lacking electricity and compelled agencies to halt in excess of 100 aircraft departures, as reported by domestic outlets.
These gusts are affecting the entire South Island and southern parts of the North Island, as stated by the country's meteorological service.
The nation's agencies have issued uncommon severe gust advisories - the top caution category - in key areas including Canterbury and Wellington.
Locals have been advised to remain inside, avoid travel, and get ready for further power and communication outages.
Widespread Impact and Crisis Measures
The electricity loss is primarily influencing residences predominantly in the southern region, although agencies report that energy was being gradually reinstated.
Local media have reported that in various locations structures have suffered roof damage, while power lines and trees have been brought down by the winds.
Across Wellington, a person was fatally injured after being struck by a wooden fragment at a popular trail walking spot on Tuesday.
Also in the capital, a woman was blown onto oncoming traffic on a thoroughfare by a powerful blast, in a moment that was recorded in a widely shared car camera footage.
Flights to and from the urban area have been suspended as a result of the weather, and various routes and public facilities are shut down.
Simultaneously local leaders have declared a state of emergency, to assist recovery activities.
Labor Protests Alongside Severe Conditions
The powerful gales on today come as numerous 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.
But the extreme weather has compelled them to change certain arrangements, with several external protests relocated inside or called off.
Like conditions are also sweeping Australia, causing a period of extreme heat to the remote areas.
Agencies have declared fire bans for fear of forest fires.
