Solar Cycle 21 - Top 50 geomagnetic storms
On this page you will find an overview of the strongest geomagnetic storms from Solar Cycle 21 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.
© Potsdam - CC BY 4.0 - Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., 2021. - ©WDC for Geomagnetism, Kyoto
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الأحد, ٢٣ يونيو ٢٠٢٤
Old sunspot region 3664 returns with an M9.3 solar flare!
الاثنين, ١٠ يونيو ٢٠٢٤
CME impact, X1.5 solar flare
السبت, ٨ يونيو ٢٠٢٤
M9.3 solar flare, S3 proton storm, Earth-directed CME
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| Last X-flare | 2024/06/10 | X1.55 |
| Last M-flare | 2024/07/01 | M2.1 |
| Last geomagnetic storm | 2024/06/28 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| مايو ٢٠٢٤ | 171.7 +35.2 |
| Last 30 days | 155.8 +6.7 |