Viewing archive of Friday, 21 August 1998

Sunspot numberNew regionsBackground fluxMaximum fluxCM
138 182B5.3C5.1651

Solar flares

RegionStartMaximumEnd
-C2.5 01:4701:5402:03
-C2.7 06:1706:2506:35
-C4.5 08:5309:0309:15
8307C1.0 16:1416:2016:29
-C5.1 21:0321:1421:39

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/02Kp5 (G1)
Number of spotless days in 2019:183
Current stretch spotless days:13

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