Viewing archive of Tuesday, 21 August 2001

Sunspot numberNew regionsBackground fluxCM
169 -31 -1C1.161

Solar flares

RegionStartMaximumEnd
-C3.0 00:1000:1800:28
9585C1.3 01:5602:0002:06
-C1.9 03:3103:3703:46
-C1.6 07:2107:4808:13
-C2.7 10:3513:0314:34
-C1.9 20:5220:5721:02
-M1.5 21:5121:5722:00

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/01/05Kp5 (G1)
Number of spotless days in 2019:8
Current stretch spotless days:10

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