Viewing archive of Wednesday, 21 September 2005

Sunspot numberNew regionsBackground fluxMaximum flux
19 -40B1.1B9.59

Solar flares

RegionStartMaximumEnd
-B3.7 23:47--:--00:29
-B2.5 04:4204:4804:57
-B2.5 06:5707:0307:10
-B9.5 08:5309:0009:06
-B3.1 21:0921:1521:20

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:267
Current stretch spotless days:40

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