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Bulletin on solar and geomagnetic activity Solar activity report
Geophysical report
Sunspot regions
Coronal holes
Kp values
Solar flares
Radiation storms
Solar wind (Speed, Density), Interplanetary Magnetic Field (IMF) (Bt, Bz)
New region 2175: a fast growing sunspot region
A new sunspot region (NOAA number 2175) has emerged at 16 degrees north and 8 degrees west. It developed rapidly during the past 24 hours, both in size and complexity. Could this new sunspot region produce a strong solar flare?
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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
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AR 14079 105AR 14081 1Solar filters and telescopes 11Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 43AR 14082 2
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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 | 58 -82.6 |
| Last 30 days | 112.3 -19.5 |