Magnetic storms on Dec 21, 2021
Geomagnetic storms on Dec 21, 2021
No geomagnetic storms were observed on Dec 21, 2021
Magnetic storms for the last 3 days
Max solar activity on Dec 21, 2021
Solar radio flux (10.7 cm) = 137
Mean planetary A index = 16
Mean planetary Kp index = 4 (55 nT)