Intense gales attaining speeds of as high as 155km/h (96mph) have left around 90,000 properties experiencing outages and forced officials to halt in excess of 100 flights, based on domestic outlets.
The gales are impacting the whole South Island and lower areas of the northern region, according to the country's meteorological service.
New Zealand authorities have announced rare severe gust advisories - the most severe warning - in core zones encompassing Wellington and Canterbury.
Locals have been advised to stay indoors, refrain from journeys, and make arrangements for additional power and communication outages.
Broad Impact and Emergency Measures
The power cut seems to be impacting residences mostly in the southern region, while agencies state that the electricity supply was being gradually reinstated.
Regional news have stated that in various locations roofs have been ripped off houses, while power lines and trees have been toppled by the winds.
Across Wellington, a man was killed after being hit by a falling limb at a popular trail walking spot on Tuesday.
Also in the capital, a female was pushed toward approaching vehicles on a thoroughfare by a intensive burst, in a moment that was filmed in a viral dashcam video.
Aircraft services entering and leaving the city have been halted because of the weather, whereas some roads and libraries are also closed.
At the same time Canterbury officials have issued a state of emergency, to assist recovery activities.
Strike Action Alongside Severe Conditions
The wild winds on Thursday coincide with numerous of educators, medical professionals and government employees take part in what has been called a "significant labor action", calling for improved salaries and workplace environments.
But the severe conditions has compelled them to alter some of their plans, with some outdoor rallies moved indoors or cancelled.
Comparable winds are impacting the neighboring country, bringing a period of extreme heat to the remote areas.
Authorities have declared fire bans for apprehension regarding bushfires.
