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Bulletin on solar and geomagnetic activity Solar activity report
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Strong G3 geomagnetic storm
The NOAA SWPC reported strong G3 geomagnetic storming conditions during the 21:00-00:00 UTC period on 6th of March. The Wing Kp-index reported a maximum of Kp6+ and also the GFZ Potsdam Quicklook Kp-index did not go beyond Kp6+. The direction of the IMF (Bz) turned sharply southward after 15:00 UTC reaching as low as -18.4nT at 18:34 UTC. This caused a violent geomagnetic response and visual (!) auroral displays were reported as far south as The Netherlands!
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
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AR4062 45Incoming & Unnumbered Active Regions 1755AR4064 132025/04/12-13 Filament CMEs 2025/04/16 G3 Watch 535GLE. Ground Level Enhancements 12
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/15 | M1.2 |
| Last geomagnetic storm | 2025/04/16 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 120.5 -13.7 |
| Last 30 days | 116.6 -25.7 |