The anticipated M9.3 coronal mass ejection has arrived at our planet. As expected, it looks like a glancing blow with the solar wind speed increasing to a modest 430km/s with the interplanetary magnetic field strength (Bt) increasing to about 15nT. A minor G1 geomagnetic storm watch is in effect for the remainder of today.
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Last X-flare | 2025/01/04 | X1.85 |
Last M-flare | 2025/01/09 | M1.1 |
Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
Spotless days | |
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Last spotless day | 2022/06/08 |
Monthly mean Sunspot Number | |
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December 2024 | 154.5 +2 |
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Last 30 days | 151.7 +34.3 |