Powerful gusts hitting velocities of up to 155km/h (96mph) have left around 90,000 households experiencing outages and compelled agencies to halt more than 100 aircraft departures, according to domestic outlets.
The winds are influencing the whole South Island and lower areas of the northern region, according to the national weather agency.
New Zealand authorities have announced infrequent red wind warnings - the highest alert level - in key areas such as these major districts.
Locals have been advised to remain inside, avoid travel, and make arrangements for more utility disruptions.
Extensive Damage and Crisis Response
The electricity loss seems to be impacting residences mostly in the southern region, though agencies report that power was being gradually reinstated.
Domestic outlets have reported that in various locations structures have suffered roof damage, while power lines and trees have been brought down by the winds.
In Wellington, a individual was fatally injured after being hit by a tree branch at a popular trail walking spot on Tuesday.
Meanwhile in Wellington, a individual was pushed toward moving cars on a street by a strong gust of wind, in a moment that was captured in a widely shared car camera footage.
Flights to and from the urban area have been cancelled as a result of the weather, and various routes and public facilities are shut down.
Simultaneously local leaders have announced a crisis declaration, to support disaster response efforts.
Work Stoppages Amid Severe Conditions
These intense gusts on this day come as tens of thousands of school staff, physicians and civil servants take part in what has been described as a "major walkout", requesting higher wages and enhanced employment terms.
Yet the severe conditions has pressured them to modify 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 nation's interior regions.
Agencies have issued fire bans for apprehension regarding forest fires.
