Powerful gales hitting velocities of as high as 155km/h (96mph) have left nearly 90,000 households without power and led authorities to halt more than 100 flights, according to local media.
The winds are influencing the complete South Island and southern parts of the northern region, according to the country's meteorological service.
New Zealand authorities have announced rare high-level wind alerts - the top caution category - in key areas including Wellington and Canterbury.
People have been advised to avoid going outside, refrain from journeys, and make arrangements for additional electricity and network failures.
Extensive Impact and Crisis Response
The electricity loss is primarily influencing residences mostly in the southern region, although officials say that power was being restored progressively.
Regional news have stated that in certain areas structures have suffered roof damage, and trees and electricity poles have been toppled by the gusts.
In Wellington, a individual was fatally injured after being hit by a wooden fragment at a frequent walking route on earlier this week.
Meanwhile in Wellington, a woman was pushed toward oncoming traffic on a street by a intensive burst, in a incident that was filmed in a viral dashcam video.
Air travel in and out of the urban area have been suspended because of the winds, whereas some roads and libraries are shut down.
Meanwhile authorities in Canterbury have issued a state of emergency, to support recovery activities.
Labor Protests Alongside Severe Conditions
These intense gusts on today occur while numerous of school staff, physicians and civil servants are engaged in what has been described as a "significant labor action", requesting improved salaries and workplace environments.
Yet the severe conditions has compelled them to modify some of their plans, with several external protests shifted to interior venues or called off.
Comparable winds are impacting the nearby nation, ushering in a high-temperature event to the remote areas.
Authorities have announced flame prohibitions for concern about forest fires.