Viewing archive of Friday, 21 April 2017

Sunspot numberNew regionsBackground fluxMaximum flux
39 131B1.1B6.2

Solar flares

RegionStartMaximumEnd
-B2.4 02:5803:0203:04
2651B6.2 12:0612:1612:26
2651B2 17:0517:1017:17
2651B4.1 17:2317:3017:41
2651B4.1 19:3519:4119:44
-B2.2 22:0322:0722:09

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Space weather facts

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 2019:237
Current stretch spotless days:11

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*since 1994

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