Viewing archive of Wednesday, 18 April 2001

Sunspot numberNew regionsBackground fluxMaximum fluxC
63 -262 1B5.7C2.253

Solar flares

RegionStartMaximumEnd
-B9.1 01:3301:3601:41
-C2.2 02:1102:1402:16
-C1.9 06:0406:1106:16
-C1.2 18:1318:2118:27

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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 2019:247
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