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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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| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/23 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 144.1 -22.3 |
| Last 30 days | 158.7 +10.9 |