Viewing archive of Saturday, 21 August 1999

Sunspot numberNew regionsBackground fluxCM
79 140 -1C1.052

Solar flares

Region Start Maximum End
- C3.7 01:52 02:01 02:21
8674 C5.2 11:00 11:06 11:11
- C2.2 15:05 15:13 15:25
8674 M3.7 16:30 16:34 16:37
- C2.0 17:24 17:45 19:12
- M5.9 22:10 22:14 22:16
- C2.4 23:16 23:23 23:43

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/11/05Kp6 (G2)
Number of spotless days in 2018:190
Last spotless day:2018/11/11

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