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First M-class solar flare and geomagnetic storm of 2015
Solar activity increased to moderate levels thanks to an impulsive M1.1 (R1-minor) solar flare that peaked at 09:47 UTC from sunspot region 2253. There was no coronal mass ejection associated with this event. We are also under the influence of a coronal hole high speed stream and we even reached the G1 minor geomagnetic storm threshold in the early hours of 3 January according to the NOAA SWPC. Aurora were seen from many high latitude locations. Our header image was captured last night by Jüri Voit from Estonia. Stunning!
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Coronal hole faces Earth
Sunspot region 3947, X-class solar flares
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| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/22 | M1.3 |
| Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
| Spotless days | |
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| Monthly mean Sunspot Number | |
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| January 2025 | 145.2 -9.3 |
| Last 30 days | 163.2 +45.8 |