Intense winds reaching speeds of up to 155km/h (96mph) have caused nearly 90,000 homes lacking electricity and led officials to cancel more than 100 air travel services, according to regional news sources.
The gales are influencing the entire South Island and southern sections of the North Island, according to the weather forecasting body.
New Zealand authorities have announced infrequent red wind warnings - the most severe warning - in core zones including these major districts.
Locals have been urged to stay indoors, refrain from journeys, and make arrangements for further electricity and network failures.
Widespread Impact and Emergency Measures
This outage appears to be affecting households predominantly in the southern region, although authorities report that energy was being slowly brought back.
Local media have stated that in some places roofs have been ripped off houses, and trees and electricity poles have been brought down by the gusts.
In Wellington, a individual was killed after being impacted by a tree branch at a frequent walking route on Tuesday.
Meanwhile in Wellington, a individual was pushed toward oncoming traffic on a road by a intensive burst, in a incident that was captured in a viral dashcam video.
Flights in and out of the metropolis have been cancelled because of the winds, and certain highways and community centers are not operating.
At the same time Canterbury officials have declared a state of emergency, to facilitate emergency management operations.
Strike Action During Extreme Conditions
The powerful gales on today come as numerous of teachers, doctors and other public workers take part in what has been described as a "mega strike", calling for improved salaries and workplace environments.
But the intense climate has compelled them to modify some of their plans, with various open-air gatherings moved indoors or cancelled.
Comparable winds are also sweeping Australia, causing a period of extreme heat to the remote areas.
Authorities have declared fire bans for fear of wildfires.