Powerful winds hitting speeds of up to 155km/h (96mph) have left nearly 90,000 properties lacking electricity and forced agencies to halt more than 100 aircraft departures, according to domestic outlets.
These gusts are influencing the complete southern region and southern sections of the northern region, according to the national weather agency.
New Zealand authorities have announced infrequent high-level wind alerts - the highest alert level - in core zones including these major districts.
People have been advised to stay indoors, refrain from journeys, and get ready for additional power and communication outages.
Widespread Destruction and Emergency Measures
The electricity loss appears to be affecting homes mostly in the South Island, while authorities state that energy was being restored progressively.
Regional news have stated that in certain areas homes have lost their roofs, and power lines and trees have been knocked down by the gusts.
In Wellington, a man was lost his life after being struck by a tree branch at a popular trail walking spot on Tuesday.
Also in the capital, a individual was blown onto approaching vehicles on a road by a powerful blast, in a event that was recorded in a popular vehicle recording.
Aircraft services in and out of the urban area have been halted due to the gusts, whereas various routes and public facilities are also closed.
Meanwhile Canterbury officials have issued a crisis declaration, to support recovery activities.
Strike Action Amid Severe Conditions
The wild winds on today occur while tens of thousands of teachers, doctors and other public workers take part in what has been described as a "significant labor action", demanding higher wages and enhanced employment terms.
Yet the extreme weather has compelled them to alter some of their plans, with various open-air gatherings relocated inside or cancelled.
Similar gusts are impacting the neighboring country, ushering in a high-temperature event to the nation's interior regions.
Agencies have declared fire bans for concern about bushfires.