Intense winds hitting velocities of up to 155km/h (96mph) have resulted in approximately 90,000 properties without power and compelled officials to cancel over 100 aircraft departures, based on local media.
These gusts are impacting the complete South Island and southern parts of the North Island, according to the weather forecasting body.
Officials in New Zealand have released uncommon red wind warnings - the most severe warning - in key areas encompassing Canterbury and Wellington.
Locals have been urged to avoid going outside, avoid travel, and prepare for further utility disruptions.
Widespread Destruction and Crisis Measures
The electricity loss seems to be impacting residences mainly in the South Island, though agencies state that the electricity supply was being slowly brought back.
Local media have reported that in some places structures have suffered roof damage, and utility poles and vegetation have been knocked down by the winds.
Across Wellington, a man was killed after being struck by a tree branch at a frequent walking route on earlier this week.
Also in the capital, a female was pushed toward oncoming traffic on a road by a strong gust of wind, in a moment that was captured in a popular vehicle recording.
Air travel in and out of the city have been halted because of the gusts, and certain highways and community centers are shut down.
Simultaneously authorities in Canterbury have issued a state of emergency, to support emergency management operations.
Strike Action Alongside Extreme Conditions
The powerful gales on this day occur while tens of thousands of teachers, doctors and other public workers take part in what has been described as a "mega strike", demanding higher wages and enhanced employment terms.
However the severe conditions has compelled them to alter certain arrangements, with various open-air gatherings relocated inside or called off.
Like conditions are affecting the neighboring country, ushering in a heatwave to the nation's interior regions.
Agencies have announced burning restrictions for apprehension regarding forest fires.
