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New Zealand Faces Grid Emergency Amid Severe Solar Storms

11/12/2025

Center

Transpower Declares Emergency

Transpower declared a grid emergency in New Zealand's South Island due to a severe geomagnetic storm.
To protect critical equipment, Transpower removed some transmission lines without affecting consumer electricity supply.
In the United States, space weather forecasters warned of incoming solar storms that could enhance aurora visibility and disrupt communications.
The sun is in an active phase of its 11-year cycle, increasing the likelihood of widespread auroras.

Left

Aurora Displays Shine

A severe geomagnetic storm has produced aurora australis displays across Australia and New Zealand, with sightings reaching the Blue Mountains in New South Wales.
Two significant coronal mass ejections fueled the storm, raising auroral activity to G4.
Astronomers advise locating dark viewing sites and say Wednesday night offers the best opportunity.
Experts say regions typically too far north may still glimpse the aurora.

History

Historical Context

The March 1989 geomagnetic storm caused a nine-hour blackout in Quebec, impacting six million people and costing Hydro-Québec approximately $6 million. This event highlighted vulnerabilities in electrical infrastructure, similar to recent disruptions in New Zealand. Understanding past storms, like the Carrington Event of 1859, underscores the importance of enhancing grid resilience against solar activity to prevent future outages.

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Transpower Declares Emergency

Transpower declared a grid emergency in New Zealand's South Island due to a severe geomagnetic storm.
To protect critical equipment, Transpower removed some transmission lines without affecting consumer electricity supply.
In the United States, space weather forecasters warned of incoming solar storms that could enhance aurora visibility and disrupt communications.
The sun is in an active phase of its 11-year cycle, increasing the likelihood of widespread auroras.

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