Intense winds hitting speeds of up to 155km/h (96mph) have left around 90,000 homes lacking electricity and led officials to halt over 100 aircraft departures, as reported by local media.
The gales are influencing the complete South Island and lower areas of the North Island, as stated by the national weather agency.
Officials in New Zealand have issued uncommon red wind warnings - the top caution category - in core zones encompassing these major districts.
Residents have been encouraged to avoid going outside, refrain from journeys, and get ready for more electricity and network failures.
Extensive Destruction and Emergency Response
This outage is primarily influencing households mostly in the southern region, though agencies state that the electricity supply was being restored progressively.
Local media have indicated that in some places roofs have been ripped off houses, and trees and electricity poles have been toppled by the gales.
In Wellington, a person was killed after being impacted by a falling limb at a well-known hiking path on earlier this week.
Additionally in the city, a female was blown onto moving cars on a street by a strong gust of wind, in a moment that was recorded in a viral dashcam video.
Flights entering and leaving the city have been cancelled as a result of the winds, while some roads and libraries are also closed.
At the same time local leaders have issued a crisis declaration, to assist disaster response efforts.
Strike Action Amid Severe Weather
These intense gusts on this day coincide with many of school staff, physicians and civil servants take part in what has been described as a "mega strike", requesting improved salaries and workplace environments.
However the intense climate has forced them to modify various scheduled activities, with some outdoor rallies moved indoors or cancelled.
Comparable winds are affecting the nearby nation, bringing a heatwave to the country's outback.
Authorities have announced fire bans for apprehension regarding wildfires.