Viewing archive of Thursday, 21 February 2002

Sunspot numberNew regionsBackground fluxCM
148 -93C1.464

Solar flares

Region Start Maximum End
9830 M4.4 23:49 00:10 00:27
- C5.7 00:45 00:54 01:27
9825 C3.6 04:41 04:48 05:10
- C5.6 07:06 07:57 08:46
9825 C7.0 09:25 09:32 09:57
- M3.9 11:56 12:26 12:36
9830 C3.5 16:45 16:48 16:50
- M1.0 18:07 18:23 18:44
- M1.4 20:28 20:37 20:47
- C3.9 22:05 22:15 22:24

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/06/18Kp5 (G1)
Number of spotless days in 2018:85
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