when was the last g5 geomagnetic storm

when was the last g5 geomagnetic storm

1 hour ago 2
Nature

Last geomagnetic storm occurred around mid-November 2025, with reports indicating a G4 (Kp9−) event dated about November 12, 2025. Active space- weather monitoring suggested the storm intensified around November 12–13, 2025, driven by a strong solar flare/CME ensemble that produced high geomagnetic indices (Kp 7+ to 9− ranges) during that period. For the most precise timing and the exact Dst/Np indices for your locality, you can check NOAA’s Space Weather Prediction Center or SpaceWeatherLive’s historical storm timelines, which log the onset, peak, and recovery phases in universal time and local times. If you’d like, I can fetch the latest confirmed timestamps and provide a step-by-step view of the storm’s progression (onset, peak, and end) with corresponding indices.

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