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Bulletin on solar and geomagnetic activity Solar activity report
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Kp values
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Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
X2.0 solar flare from sunspot region 4001
It has been 53 long days but we have finaly seen another X-class solar flare coming from the Sun today. Sunspot region 3947 produced an X1.8 solar flare on 4th of January and since that day... silence... but today departing sunspot region 4001 produced an X2.0 solar flare.
Latest news
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Latest forum messages
Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 50AR 14079 123Unexplained proton activity 69Unspecified geomagnetic activity 2398Filaments and prominences 138
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/30 | M2.03 |
| Last geomagnetic storm | 2025/05/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 74.8 -65.8 |
| Last 30 days | 110.5 -21.4 |