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Old sunspot region 3664 returns with an M9.3 solar flare!
Old sunspot region 3664 and more recently 3697 is back for a third visit of the earth-facing solar disk. The region received sunspot number 3723 and immediately announced its return with an impulsive and non-eruptive M9.3 (R2-moderate) solar flare that peaked at 13:01 UTC. It has decayed heavily as expected of course but there still seems to be some gas in the tank for major eruptions! Exciting!
Latest news
Sunday, 23 June 2024
Old sunspot region 3664 returns with an M9.3 solar flare!
Monday, 10 June 2024
CME impact, X1.5 solar flare
Saturday, 8 June 2024
M9.3 solar flare, S3 proton storm, Earth-directed CME
Latest forum messages
Partial Halo CME 2024/06/29 16:00 10Sunspot Latitudes at or near Solar Maximum 36Incoming Active Regions 578Partial Halo CME 2024/06/29 16:00 0Noctilucent clouds 24
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Space weather facts
| Last X-flare | 2024/06/10 | X1.55 |
| Last M-flare | 2024/06/25 | M1.0 |
| Last geomagnetic storm | 2024/06/28 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| May 2024 | 171.7 +35.2 |
| Last 30 days | 154.3 +5.1 |