Intense gusts hitting velocities of up to 155km/h (96mph) have caused nearly 90,000 homes without power and led agencies to call off more than 100 flights, as reported by regional news sources.
The gales are influencing the entire South Island and lower areas of the North Island, according to the weather forecasting body.
The nation's agencies have issued rare red wind warnings - the highest alert level - in key areas encompassing these major districts.
Residents have been advised to stay indoors, stay off roads, and get ready for additional utility disruptions.
Broad Damage and Emergency Measures
The electricity loss seems to be impacting residences mostly in the South Island, though officials state that the electricity supply was being restored progressively.
Local media have stated that in some places structures have suffered roof damage, whereas utility poles and vegetation have been toppled by the gales.
In Wellington, a person was killed after being hit by a tree branch at a frequent walking route on earlier this week.
Additionally in the city, a individual was blown onto oncoming traffic on a road by a intensive burst, in a moment that was recorded in a popular vehicle recording.
Flights entering and leaving the city have been suspended due to the weather, while certain highways and community centers are shut down.
Simultaneously local leaders have announced a state of emergency, to facilitate recovery activities.
Labor Protests Amid Harsh Weather
The wild winds on Thursday coincide with numerous of educators, medical professionals and government employees are engaged in what has been described as a "major walkout", calling for better pay and working conditions.
Yet the intense climate has forced them to modify some of their plans, with some outdoor rallies shifted to interior venues or called off.
Similar gusts are impacting the nearby nation, causing a high-temperature event to the country's outback.
Authorities have declared flame prohibitions for concern about bushfires.
