Viewing archive of Saturday, 21 April 2018

Sunspot numberNew regionsBackground fluxMaximum flux
34 201 1A6.2B2.02

Solar flares

RegionStartMaximumEnd
-B1.1 06:0106:0806:19
-B2.0 10:4510:5110:58
2706B1.8 18:4418:5119:04
2706B1.2 20:5520:5821:00
-B1.1 21:3721:4021:44

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/07/10Kp5 (G1)
Number of spotless days in 2019:132
Current stretch spotless days:14

This day in history*

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12000M5.5
22000M3.3
32000M1.9
42000M1.9
52000M1.7
ApG
1200521G1
2200220G1
3199914G1
4201713
5201112
*since 1994

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