Intense gusts reaching speeds of up to 155km/h (96mph) have left approximately 90,000 properties experiencing outages and forced authorities to cancel over 100 air travel services, according to local media.
These gusts are influencing the whole South Island and southern parts of the North Island, per the weather forecasting body.
New Zealand authorities have issued infrequent severe gust advisories - the highest alert level - in key areas encompassing Canterbury and Wellington.
People have been urged to remain inside, refrain from journeys, and get ready for more utility disruptions.
Widespread Damage and Emergency Response
The power cut is primarily influencing households mainly in the South Island, although authorities say that energy was being slowly brought back.
Regional news have reported that in some places structures have suffered roof damage, whereas power lines and trees have been knocked down by the gales.
Within the capital, a individual was lost his life after being impacted by a falling limb at a well-known hiking path on earlier this week.
Meanwhile in Wellington, a individual was pushed toward moving cars on a road by a powerful blast, in a moment that was filmed in a popular vehicle recording.
Aircraft services entering and leaving the urban area have been cancelled due to the gusts, and certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have issued a state of emergency, to assist disaster response efforts.
Strike Action Amid Harsh Weather
The wild winds on Thursday occur while numerous of school staff, physicians and civil servants take part in what has been termed a "significant labor action", requesting higher wages and enhanced employment terms.
However the severe conditions has pressured them to modify certain arrangements, with some outdoor rallies shifted to interior venues or cancelled.
Similar gusts are impacting the neighboring country, ushering in a heatwave to the remote areas.
Agencies have announced flame prohibitions for apprehension regarding wildfires.