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G3 Geomagnetic Storm Promises Stunning Auroras Tonight

12/9/2025

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Summary

Story summary

A geomagnetic storm on December 9, 2025 prompts the National Oceanic and Atmospheric Administration (NOAA) to issue a G3 storm watch for auroras in 15 states, including New Jersey, New York, and Vermont.
The best viewing times are 10 p.m. to 2 a.m. under clear skies.
The storm stems from a coronal mass ejection linked to a solar flare.
Viewers should check local forecasts because weather conditions may affect sightings.

History

Historical Context

The Carrington Event, occurring on September 1-2, 1859, was the most intense geomagnetic storm recorded, caused by a coronal mass ejection from the Sun. It disrupted telegraph systems across North America and Europe, with operators experiencing electric shocks. This event highlighted the vulnerability of early electrical communication to solar activity, underscoring the importance of understanding solar storms for modern technology.

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Story summary

A geomagnetic storm on December 9, 2025 prompts the National Oceanic and Atmospheric Administration (NOAA) to issue a G3 storm watch for auroras in 15 states, including New Jersey, New York, and Vermont.
The best viewing times are 10 p.m. to 2 a.m. under clear skies.
The storm stems from a coronal mass ejection linked to a solar flare.
Viewers should check local forecasts because weather conditions may affect sightings.

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