Severe winds hitting velocities of up to 155km/h (96mph) have caused nearly 90,000 properties without power and led officials to cancel more than 100 flights, according to local media.
The gales are affecting the complete South Island and lower areas of the North Island, according to the national weather agency.
Officials in New Zealand have announced uncommon high-level wind alerts - the top caution category - in core zones such as these major districts.
Residents have been urged to remain inside, stay off roads, and prepare for additional power and communication outages.
Widespread Destruction and Crisis Response
The power cut appears to be affecting households predominantly in the southern region, though agencies report that the electricity supply was being slowly brought back.
Domestic outlets have stated that in some places homes have lost their roofs, and utility poles and vegetation have been knocked down by the gales.
Across Wellington, a individual was killed after being impacted by a tree branch at a well-known hiking path on earlier this week.
Also in the capital, a individual was swept into oncoming traffic on a thoroughfare by a intensive burst, in a moment that was captured in a popular vehicle recording.
Aircraft services in and out of the urban area have been suspended due to the weather, and various routes and public facilities are not operating.
Simultaneously authorities in Canterbury have declared a state of emergency, to assist recovery activities.
Labor Protests Alongside Harsh Conditions
The powerful gales on today come as many of school staff, physicians and civil servants are participating in what has been described as a "mega strike", calling for higher wages and enhanced employment terms.
But the severe conditions has compelled them to alter various scheduled activities, with various open-air gatherings shifted to interior venues or abandoned.
Similar gusts are affecting Australia, bringing a high-temperature event to the remote areas.
Officials have declared flame prohibitions for apprehension regarding wildfires.
