Magnetic storms on Sep 20, 2011
Geomagnetic storms on Sep 20, 2011
No geomagnetic storms were observed on Sep 20, 2011Magnetic storms for the last 3 days
Max solar activity on Sep 20, 2011
Solar radio flux (10.7 cm) = 144
Mean planetary A index = 7
Mean planetary Kp index = 4 (42 nT)