Intense gusts reaching velocities of up to 155km/h (96mph) have caused around 90,000 households without power and forced officials to call off over 100 air travel services, based on local media.
The winds are impacting the complete southern region and lower areas of the North Island, per the national weather agency.
Officials in New Zealand have issued infrequent red wind warnings - the top caution category - in key areas encompassing these major districts.
People have been advised to remain inside, stay off roads, and make arrangements for more power and communication outages.
Widespread Impact and Emergency Measures
The electricity loss appears to be affecting households mainly in the southern region, though agencies say that the electricity supply was being restored progressively.
Domestic outlets have stated that in some places homes have lost their roofs, while trees and electricity poles have been knocked down by the winds.
In Wellington, a man was fatally injured after being hit by a tree branch at a frequent walking route on Tuesday.
Also in the capital, a individual was swept into approaching vehicles on a road by a intensive burst, in a incident that was captured in a popular vehicle recording.
Aircraft services in and out of the urban area have been cancelled because of the winds, and various routes and public facilities are not operating.
Simultaneously local leaders have issued a emergency situation, to support emergency management operations.
Strike Action During Harsh Weather
The powerful gales on this day coincide with many of educators, medical professionals and government employees are engaged 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 change various scheduled activities, with several external protests shifted to interior venues or called off.
Similar gusts are impacting Australia, bringing a heatwave to the country's outback.
Agencies have declared burning restrictions for apprehension regarding forest fires.
