Viewing archive of Sunday, 18 April 2004

Sunspot numberNew regionsBackground fluxMaximum flux
92 371 1B1.3B9.1

Solar flares

RegionStartMaximumEnd
-B2.1 09:3309:3809:45
-B2.9 14:1614:1914:21
-B2.7 14:5614:5915:01
0596B9.1 15:5515:5916:21
-B3.2 16:5616:5917:02

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:74
Current stretch spotless days:4

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