Intense winds reaching velocities of approximately 155km/h (96mph) have resulted in nearly 90,000 households experiencing outages and led agencies to halt more than 100 flights, according to local media.
These gusts are influencing the whole southern region and lower areas of the northern region, per the national weather agency.
The nation's agencies have issued infrequent severe gust advisories - the highest alert level - in core zones including Wellington and Canterbury.
People have been urged to stay indoors, avoid travel, and prepare for further power and communication outages.
Extensive Impact and Crisis Measures
The power cut is primarily influencing households predominantly in the southern region, though authorities report that energy was being restored progressively.
Domestic outlets have reported that in certain areas structures have suffered roof damage, whereas trees and electricity poles have been knocked down by the gales.
In Wellington, a person was killed after being hit by a falling limb at a well-known hiking path on earlier this week.
Meanwhile in Wellington, a female was swept into approaching vehicles on a road by a intensive burst, in a incident that was captured in a popular vehicle recording.
Air travel to and from the city have been halted as a result of the weather, while various routes and public facilities are also closed.
Meanwhile authorities in Canterbury have issued a emergency situation, to support emergency management operations.
Work Stoppages Amid Severe Weather
The powerful gales on today come as numerous of educators, medical professionals and government employees are engaged in what has been called a "mega strike", demanding improved salaries and workplace environments.
However the severe conditions has forced them to modify various scheduled activities, with several external protests relocated inside or cancelled.
Like conditions are impacting the neighboring country, ushering in a period of extreme heat to the remote areas.
Officials have announced fire bans for apprehension regarding bushfires.