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M5.6 solar flare, dynamic sunspot region 2403
Sunspot region 2403 remains active and this morning it produced the strongest solar flare thus far: an impulsive M5.6 (R2-moderate) solar flare that peaked at 07:33 UTC. No radio sweeps were reported from this impulsive solar flare which indicated that a coronal mass ejection from this event would be unlikely. SOHO coronagraph imagery confirms that this solar flare indeed did not launch a coronal mass ejection.
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Oulu, Rovaniemi, SodankyläKirkenes, Trondheim
Arkhangelsk, Murmansk, Vorkuta
Kiruna, Luleå, Sundsvall, Umeå
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X1.1 solar flare
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
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Latest alerts
15:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 14:59 UTC
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20:45 UTC - Geomagnetic activity
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/05 | M1.0 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 151.3 +17.1 |
| Last 30 days | 135.2 -4.5 |