Intense winds reaching speeds of up to 155km/h (96mph) have resulted in approximately 90,000 homes lacking electricity and forced officials to halt over 100 aircraft departures, based on domestic outlets.
The winds are impacting the whole southern region and lower areas of the North Island, as stated by the national weather agency.
The nation's agencies have issued rare high-level wind alerts - the most severe warning - in core zones including these major districts.
Locals have been urged to avoid going outside, avoid travel, and get ready for more utility disruptions.
Widespread Damage and Emergency Measures
The power cut seems to be impacting households mainly in the South Island, although officials state that energy was being gradually reinstated.
Domestic outlets have indicated that in various locations roofs have been ripped off houses, whereas trees and electricity poles have been toppled by the gusts.
Across Wellington, a person was fatally injured after being hit by a falling limb at a frequent walking route on Tuesday.
Meanwhile in Wellington, a female was swept into moving cars on a street by a intensive burst, in a event that was recorded in a widely shared car camera footage.
Air travel in and out of the city have been cancelled because of the winds, whereas some roads and libraries are not operating.
Simultaneously authorities in Canterbury have issued a crisis declaration, to support emergency management operations.
Strike Action During Severe Weather
The powerful gales on Thursday coincide with many of teachers, doctors and other public workers are participating in what has been described as a "significant labor action", calling for higher wages and enhanced employment terms.
But the severe conditions has compelled them to alter certain arrangements, with various open-air gatherings shifted to interior venues or abandoned.
Like conditions are affecting the neighboring country, bringing a period of extreme heat to the remote areas.
Authorities have issued flame prohibitions for concern about bushfires.