NOAA Issues G3 Geomagnetic Storm Warning As 500,000 Kilometer Hole Sends Solar Wind At EarthOn Monday 15 September 2025, the National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center issued a G3 geomagnetic storm warning, the result of a large coronal hole sending increased solar winds at Earth.The rest of this article is behind a paywall. Please sign in or...
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