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When to Use the Kp-Index Geomagnetic Storm Scale 3D Explorer - Best Sessions and Limits

Last reviewed: 2026-07-24

Open Kp-Index Geomagnetic Storm Scale 3D Explorer when you want to compare a quiet day (Kp 2-3) against the real May 2024 G5 superstorm, or to see how NOAA's G-scale maps onto the raw Kp number - not to check today's live Kp/G-scale reading or a precise degree-by-degree aurora-visibility map.

A quiet-day-vs-superstorm lesson

A session starts at a quiet Kp of 2-3 to see the narrow aurora ring and a below-G-scale reading, then jumps to the May 2024 G5 case to see the ring widen and the trace swing much further - the same scale, showing how far a real superstorm sits above ordinary geomagnetic activity.

Sessions this explorer does not fit

Sessions this page does not fit are checking today's live Kp/G-scale reading - use NOAA SWPC's own real-time page for that - or the light-emission mechanism behind aurora itself, which belongs on the Aurora 3D Explorer. For one specific historical superstorm, see the Carrington Event 3D Explorer; for the field's static structure, see the Earth Magnetosphere 3D Explorer. Walk the controls in the step-by-step guide.

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Last updated: Jul 24, 2026

Reviewed by the Free Tool Online editorial team · Tested in the current versions of Chrome, Firefox, Safari, and Edge before publishing. No account is needed to use any tool. Report a bug - we triage within 72 hours. · Last refreshed April 2026.

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