Intense winds hitting velocities of up to 155km/h (96mph) have caused nearly 90,000 homes without power and forced authorities to call off more than 100 air travel services, based on local media.
The winds are impacting the whole South Island and southern parts of the northern region, as stated by the weather forecasting body.
Officials in New Zealand have issued uncommon high-level wind alerts - the top caution category - in core zones such as Wellington and Canterbury.
People have been advised to stay indoors, avoid travel, and prepare for additional utility disruptions.
Extensive Damage and Crisis Measures
The power cut seems to be impacting residences predominantly in the southern region, while authorities report that the electricity supply was being slowly brought back.
Local media have stated that in some places structures have suffered roof damage, while power lines and trees have been knocked down by the winds.
Within the capital, a man was killed after being impacted by a falling limb at a well-known hiking path on earlier this week.
Also in the capital, a female was swept into moving cars on a thoroughfare by a intensive burst, in a incident that was captured in a popular vehicle recording.
Air travel in and out of the metropolis have been suspended due to the weather, whereas certain highways and community centers are shut down.
Meanwhile local leaders have announced a crisis declaration, to support recovery activities.
Work Stoppages During Harsh Conditions
The wild winds on today come as numerous of school staff, physicians and civil servants are participating in what has been called a "major walkout", calling for higher wages and enhanced employment terms.
But the intense climate has pressured them to modify certain arrangements, with some outdoor rallies shifted to interior venues or cancelled.
Similar gusts are also sweeping the neighboring country, ushering in a heatwave to the remote areas.
Officials have issued flame prohibitions for concern about forest fires.