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Entity: National Oceanic and Atmospheric Administration (NOAA)
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National Oceanic and Atmospheric Administration (NOAA)

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The National Oceanic and Atmospheric Administration (NOAA) uses a geomagnetic storm scale with categories G1 through G5; G4 is classified as "severe" and G5 is classified as "extreme".
high technical
NOAA categorizes geomagnetic storm severity to indicate potential impacts on technology and infrastructure.
Environment Public Safety Science Space
Geomagnetic storm could make aurora visible for mu
The U.S. saw vivid northern lights as far south as
The National Oceanic and Atmospheric Administration (NOAA) classifies geomagnetic storms on a G-scale in which G5 is the highest level considered 'extreme' and G4 is considered 'severe'.
high temporal
Intensity scale used for geomagnetic storms in space weather alerts.
Science Public Safety
Northern lights spotted in skies across U.S. See t

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Environment Public Safety Science Space