Intense gales attaining speeds of as high as 155km/h (96mph) have resulted in around 90,000 properties lacking electricity and compelled agencies to cancel more than 100 flights, based on local media.
These gusts are affecting the whole South Island and southern parts of the northern region, as stated by the weather forecasting body.
Officials in New Zealand have released rare red wind warnings - the top caution category - in central regions including Wellington and Canterbury.
People have been urged to avoid going outside, refrain from journeys, and get ready for additional utility disruptions.
Widespread Impact and Crisis Measures
The power cut appears to be affecting households mainly in the southern region, although agencies report that energy was being gradually reinstated.
Domestic outlets have reported that in various locations roofs have been ripped off houses, whereas utility poles and vegetation have been knocked down by the winds.
Across Wellington, a person was fatally injured after being hit by a falling limb at a frequent walking route on Tuesday.
Additionally in the city, a female was pushed toward moving cars on a street by a strong gust of wind, in a moment that was recorded in a viral dashcam video.
Flights entering and leaving the urban area have been cancelled as a result of the gusts, while some roads and libraries are not operating.
Simultaneously authorities in Canterbury have announced a crisis declaration, to support disaster response efforts.
Work Stoppages During Harsh Conditions
The powerful gales on Thursday occur while tens of thousands of school staff, physicians and civil servants are participating in what has been described as a "major walkout", demanding improved salaries and workplace environments.
However the severe conditions has pressured them to alter some of their plans, with several external protests relocated inside or abandoned.
Like conditions are impacting the nearby nation, ushering in a high-temperature event to the remote areas.
Officials have declared flame prohibitions for apprehension regarding bushfires.
