Intense gusts attaining speeds of up to 155km/h (96mph) have left nearly 90,000 properties without power and forced agencies to call off over 100 air travel services, based on local media.
The winds are affecting the whole southern region and southern sections of the northern region, according to the national weather agency.
Officials in New Zealand have released uncommon high-level wind alerts - the most severe warning - in central regions including these major districts.
People have been encouraged to stay indoors, stay off roads, and get ready for more utility disruptions.
Broad Damage and Crisis Response
This outage appears to be affecting homes mainly in the southern region, though officials say that power was being restored progressively.
Domestic outlets have indicated that in some places structures have suffered roof damage, and power lines and trees have been brought down by the gusts.
Within the capital, a man was fatally injured after being hit by a falling limb at a frequent walking route on Tuesday.
Meanwhile in Wellington, a female was pushed toward approaching vehicles on a thoroughfare by a powerful blast, in a moment that was captured in a popular vehicle recording.
Air travel entering and leaving the city have been suspended due to the winds, whereas various routes and public facilities are shut down.
Simultaneously authorities in Canterbury have issued a state of emergency, to assist emergency management operations.
Labor Protests Amid Harsh Weather
These intense gusts on today come as tens of thousands of school staff, physicians and civil servants are participating in what has been called a "major walkout", demanding higher wages and enhanced employment terms.
Yet the extreme weather has pressured them to change certain arrangements, with some outdoor rallies shifted to interior venues or called off.
Comparable winds are impacting Australia, ushering in a high-temperature event to the nation's interior regions.
Officials have issued flame prohibitions for concern about wildfires.
