Intense gusts reaching velocities of approximately 155km/h (96mph) have left nearly 90,000 households lacking electricity and led agencies to call off over 100 flights, as reported by regional news sources.
The gales are affecting the entire South Island and southern parts of the northern region, per the country's meteorological service.
New Zealand authorities have released infrequent severe gust advisories - the top caution category - in key areas including Canterbury and Wellington.
People have been advised to stay indoors, stay off roads, and prepare for more utility disruptions.
Extensive Destruction and Crisis Response
The electricity loss appears to be affecting residences predominantly in the South Island, although agencies state that energy was being restored progressively.
Domestic outlets have stated that in various locations homes have lost their roofs, whereas power lines and trees have been brought down by the gales.
In Wellington, a individual was killed after being hit by a tree branch at a well-known hiking path on earlier this week.
Additionally in the city, a female was pushed toward moving cars on a street by a powerful blast, in a moment that was filmed in a popular vehicle recording.
Aircraft services in and out of the urban area have been halted as a result of the gusts, while certain highways and community centers are not operating.
At the same time Canterbury officials have issued a emergency situation, to assist emergency management operations.
Strike Action Amid Extreme Weather
The wild winds on Thursday come as tens of thousands of educators, medical professionals and government employees are participating in what has been called a "mega strike", calling for better pay and working conditions.
However the intense climate has forced them to alter some of their plans, with some outdoor rallies relocated inside or abandoned.
Comparable winds are affecting Australia, causing a heatwave to the nation's interior regions.
Agencies have declared flame prohibitions for fear of forest fires.
