Sunspot region AR12421

Number of
sunspots
Size Class Magn. Class Spot Location
2015/09/23 7 10 BXO N15E32
2015/09/24 7 10 BXO N15E32
2015/09/25 5 50 CAI N15E05
2015/09/26 17 70 DAC N17W09
2015/09/27 12 110 DAC N17W21
2015/09/28 11 100 DAI N16W35
2015/09/29 4 10 BXO N16W50
BCM
411

The top 6 solar flares from sunspot region 12421

Start Maximum End
1M1.342015/09/2719:4419:5820:05
2C4.82015/09/2423:4123:4700:07
3B9.072015/09/2404:4704:5104:58
4B8.342015/09/2411:3111:3511:39
5B7.962015/09/2418:4918:5418:57
6B6.972015/09/2407:5808:0108:08

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Space weather facts

Last X-flare2026/02/04X4.3
Last M-flare2026/02/13M1.0
Last geomagnetic storm2026/02/15Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
January 2026112.6 -11.4
February 2026112.1 -0.5
Last 30 days128.2 +28

This day in history*

Solar flares
12024X2.56
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32024M3.0
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DstG
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*since 1994

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