Intense gusts attaining velocities of as high as 155km/h (96mph) have left around 90,000 households experiencing outages and led agencies to cancel in excess of 100 air travel services, based on domestic outlets.
The gales are impacting the complete South Island and southern sections of the northern region, per the country's meteorological service.
Officials in New Zealand have issued infrequent high-level wind alerts - the highest alert level - in central regions including Wellington and Canterbury.
People have been urged to avoid going outside, refrain from journeys, and make arrangements for more utility disruptions.
Widespread Impact and Emergency Measures
The electricity loss appears to be affecting homes predominantly in the southern region, while officials say that the electricity supply was being restored progressively.
Regional news have reported that in various locations homes have lost their roofs, whereas trees and electricity poles have been brought down by the gusts.
In Wellington, a person was fatally injured after being impacted by a wooden fragment at a popular trail walking spot on earlier this week.
Additionally in the city, a individual was blown onto oncoming traffic on a road by a powerful blast, in a event that was recorded in a popular vehicle recording.
Air travel in and out of the urban area have been suspended because of the winds, whereas certain highways and community centers are not operating.
Meanwhile local leaders have declared a emergency situation, to facilitate disaster response efforts.
Strike Action During Extreme Conditions
These intense gusts on Thursday occur while numerous of school staff, physicians and civil servants are participating in what has been described as a "significant labor action", calling for improved salaries and workplace environments.
But the severe conditions has compelled them to modify certain arrangements, with various open-air gatherings moved indoors or cancelled.
Similar gusts are impacting the nearby nation, ushering in a high-temperature event to the country's outback.
Agencies have announced flame prohibitions for concern about wildfires.