On this page you will find an overview of the strongest geomagnetic storms since January 1957 together with links to more information in our archive. Storms are ranked by the Disturbance storm-time index (Dst) that is designed to measure the magnetic signature of magnetospheric currents observed in the equatorial regions. The Dst index is provided by the World Data Center for geomagnetism in Kyoto. When available, the maximum solar wind speed and the conditions of the interplanetary magnetic field (IMF Bt and Bz) are shown. This page is updated daily.
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
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Moderate M1 flare from sunspot region 4043
Minor R1 radio blackout in progress (≥M1 - current: M1)
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 02:59 UTC
Active geomagnetic conditions (Kp4) Threshold Reached: 20:19 UTC
Begin Time: 25/03/2025 12:36 UTC Estimated Velocity: 516km/sec.
Last X-flare | 2025/02/23 | X2.0 |
Last M-flare | 2025/03/21 | M1.2 |
Last geomagnetic storm | 2025/03/22 | Kp6- (G2) |
Spotless days | |
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Last spotless day | 2022/06/08 |
Monthly mean Sunspot Number | |
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February 2025 | 154.6 +17.6 |
March 2025 | 135 -19.6 |
Last 30 days | 133.7 -19.9 |