Viewing archive of Sunday, 19 September 1999

Sunspot numberNew regionsBackground fluxMaximum fluxC
113 -391B8.2C9.665

Solar flares

RegionStartMaximumEnd
8700C1.7 03:0903:1603:24
8699C1.2 06:4206:4506:48
8699C3.2 10:3411:2411:54
8699C4.9 14:0714:4015:01
8699C9.6 23:0323:1223:20

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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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