Viewing archive of Tuesday, 17 April 2012

Sunspot numberNew regionsBackground fluxMaximum fluxC
78 -82 1B2.9C1.30031

Solar flares

RegionStartMaximumEnd
-B5.3 03:0603:1303:23
1461C1.1 06:0608:0908:52
1455B7.6 11:1511:2911:50
1459B7.0 20:2520:3020:32
1455B9.7 22:0722:2522:38

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/08/05Kp5 (G1)
Number of spotless days in 2019:159
Current stretch spotless days:15

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*since 1994

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