Viewing archive of Sunday, 20 September 2015

Sunspot numberNew regionsBackground fluxMaximum fluxCM
74 131 1B3.4M2.1822

Solar flares

RegionStartMaximumEnd
2420M1.5 04:5505:0305:17
2415C2.6 09:3209:3409:36
2415B5.7 12:2512:2812:31
2420B9.1 13:4913:5413:58
2415C1.4 14:0914:1414:24
2415M2.1 17:3218:0318:29
-B8.2 23:2423:2823:31

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/28Kp5 (G1)
Number of spotless days in 2019:211
Current stretch spotless days:13

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*since 1994

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