Intense gales reaching speeds of as high as 155km/h (96mph) have left approximately 90,000 households without power and forced officials to halt more than 100 aircraft departures, according to regional news sources.
The winds are influencing the whole southern region and southern parts of the North Island, according to the country's meteorological service.
Officials in New Zealand have issued uncommon red wind warnings - the top caution category - in key areas including Canterbury and Wellington.
Residents have been advised to stay indoors, stay off roads, and prepare for additional utility disruptions.
Extensive Destruction and Emergency Measures
The power cut seems to be impacting households mostly in the South Island, although agencies state that the electricity supply was being restored progressively.
Domestic outlets have indicated that in certain areas roofs have been ripped off houses, whereas utility poles and vegetation have been brought down by the gales.
In Wellington, a man was fatally injured after being impacted by a tree branch at a well-known hiking path on Tuesday.
Also in the capital, a woman was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a moment that was captured in a viral dashcam video.
Flights to and from the metropolis have been cancelled as a result of the gusts, whereas certain highways and community centers are also closed.
Simultaneously authorities in Canterbury have issued a crisis declaration, to support emergency management operations.
Strike Action Amid Extreme Conditions
The wild winds on today occur while many of educators, medical professionals and government employees are engaged in what has been described as a "significant labor action", calling for higher wages and enhanced employment terms.
However the intense climate has pressured them to alter various scheduled activities, with various open-air gatherings shifted to interior venues or cancelled.
Similar gusts are also sweeping the neighboring country, causing a period of extreme heat to the nation's interior regions.
Authorities have announced burning restrictions for concern about wildfires.