Viewing archive of Tuesday, 17 April 2001

Sunspot numberNew regionsBackground fluxCM
89 -181B5.161

Solar flares

Region Start Maximum End
- C5.8 03:25 04:01 04:12
- C1.6 04:55 05:02 05:18
- C4.7 05:41 05:52 06:11
- C1.9 12:06 12:29 12:50
- C2.2 13:44 14:01 14:15
- C2.5 18:07 18:53 19:04
- M1.3 21:18 21:57 22:16

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/10/13Kp5 (G1)
Number of spotless days in 2018:167
Current stretch spotless days:3

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