Powerful gales hitting speeds of up to 155km/h (96mph) have caused around 90,000 households without power and compelled agencies to halt over 100 aircraft departures, as reported by domestic outlets.
The gales are affecting the entire southern region and southern sections of the North Island, per the national weather agency.
New Zealand authorities have announced rare high-level wind alerts - the top caution category - in central regions including Wellington and Canterbury.
Residents have been encouraged to remain inside, refrain from journeys, and prepare for additional utility disruptions.
Widespread Destruction and Emergency Response
The power cut seems to be impacting homes mainly in the southern region, although authorities say that power was being gradually reinstated.
Local media have stated that in some places roofs have been ripped off houses, whereas utility poles and vegetation have been knocked down by the winds.
In Wellington, a person was killed after being hit by a falling limb at a frequent walking route on earlier this week.
Additionally in the city, a woman was pushed toward oncoming traffic on a street by a intensive burst, in a moment that was captured in a viral dashcam video.
Air travel in and out of the metropolis have been halted due to the gusts, whereas some roads and libraries are shut down.
Meanwhile Canterbury officials have issued a crisis declaration, to assist emergency management operations.
Strike Action Alongside Extreme Conditions
The wild winds on Thursday come as tens of thousands of school staff, physicians and civil servants take part in what has been termed a "major walkout", requesting higher wages and enhanced employment terms.
However the severe conditions has pressured them to modify various scheduled activities, with several external protests moved indoors or abandoned.
Like conditions are impacting Australia, bringing a period of extreme heat to the remote areas.
Officials have announced flame prohibitions for fear of forest fires.