Powerful gusts attaining velocities of up to 155km/h (96mph) have resulted in approximately 90,000 homes experiencing outages and led authorities to call off over 100 air travel services, according to regional news sources.
The gales are impacting the complete southern region and lower areas of the North Island, per the national weather agency.
The nation's agencies have announced infrequent red wind warnings - the top caution category - in key areas encompassing Canterbury and Wellington.
Residents have been urged to remain inside, refrain from journeys, and prepare for additional electricity and network failures.
Widespread Destruction and Crisis Response
The power cut seems to be impacting households predominantly in the southern region, while officials state that energy was being gradually reinstated.
Local media have stated that in various locations roofs have been ripped off houses, while utility poles and vegetation have been brought down by the gusts.
Across Wellington, a man was killed after being struck by a falling limb at a frequent walking route on Tuesday.
Also in the capital, a female was blown onto moving cars on a street by a powerful blast, in a moment that was recorded in a popular vehicle recording.
Aircraft services to and from the city have been suspended due to the winds, whereas some roads and libraries are shut down.
At the same time Canterbury officials have declared a crisis declaration, to facilitate emergency management operations.
Strike Action During Extreme Weather
The wild winds on Thursday coincide with tens of thousands of educators, medical professionals and government employees take part in what has been described as a "significant labor action", calling for improved salaries and workplace environments.
But the extreme weather has forced them to alter certain arrangements, with several external protests shifted to interior venues or abandoned.
Similar gusts are impacting Australia, bringing a period of extreme heat to the remote areas.
Authorities have announced flame prohibitions for concern about forest fires.
