Intense gusts hitting velocities of up to 155km/h (96mph) have resulted in nearly 90,000 households lacking electricity and led agencies to call off over 100 air travel services, as reported by local media.
These gusts are affecting the whole South Island and lower areas of the North Island, according to the weather forecasting body.
The nation's agencies have announced infrequent severe gust advisories - the top caution category - in key areas including these major districts.
Residents have been advised to remain inside, refrain from journeys, and make arrangements for additional power and communication outages.
Broad Impact and Emergency Response
This outage is primarily influencing residences mainly in the southern region, while agencies state that energy was being restored progressively.
Local media have stated that in various locations structures have suffered roof damage, while trees and electricity poles have been brought down by the winds.
Within the capital, a individual was fatally injured after being hit by a tree branch at a well-known hiking path on earlier this week.
Additionally in the city, a female was pushed toward moving cars on a thoroughfare by a strong gust of wind, in a incident that was captured in a viral dashcam video.
Aircraft services in and out of the urban area have been suspended due to the gusts, and some roads and libraries are also closed.
Simultaneously local leaders have announced a emergency situation, to assist emergency management operations.
Work Stoppages Alongside Extreme Weather
The wild winds on today occur while many of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", demanding better pay and working conditions.
Yet the extreme weather has compelled them to modify some of their plans, with some outdoor rallies relocated inside or abandoned.
Like conditions are affecting the neighboring country, ushering in a period of extreme heat to the country's outback.
Agencies have issued flame prohibitions for concern about wildfires.