Intense gales reaching velocities of up to 155km/h (96mph) have caused nearly 90,000 homes lacking electricity and compelled officials to halt more than 100 flights, based on local media.
The winds are affecting the complete southern region and lower areas of the northern region, per the national weather agency.
New Zealand authorities have issued uncommon red wind warnings - the most severe warning - in key areas such as Wellington and Canterbury.
People have been urged to stay indoors, avoid travel, and make arrangements for more electricity and network failures.
Widespread Destruction and Crisis Response
The power cut seems to be impacting residences predominantly in the South Island, although agencies state that the electricity supply was being restored progressively.
Domestic outlets have stated that in some places structures have suffered roof damage, whereas power lines and trees have been toppled by the gales.
In Wellington, a person was fatally injured after being hit by a tree branch at a well-known hiking path on earlier this week.
Also in the capital, a woman was swept into approaching vehicles on a street by a intensive burst, in a event that was filmed in a viral dashcam video.
Aircraft services to and from the metropolis have been halted due to the winds, whereas various routes and public facilities are shut down.
Meanwhile authorities in Canterbury have issued a state of emergency, to support recovery activities.
Strike Action Amid Harsh Conditions
The wild winds on this day occur while many of teachers, doctors and other public workers are participating in what has been termed a "significant labor action", demanding improved salaries and workplace environments.
But the intense climate has compelled them to alter some of their plans, with various open-air gatherings moved indoors or abandoned.
Like conditions are also sweeping the neighboring country, causing a high-temperature event to the country's outback.
Officials have declared burning restrictions for apprehension regarding forest fires.
