Maximum Kp index on December 21, 2011
Kp = 2
Maximum Kp index on December 21, 2011
The Earth's magnetosphere was quiet
Kp = 2
Geomagnetic storms in Sofia on December 21, 2011
Time zone — UTC+02 (Sofia | 42.68 N 23.32 E)
Geomagnetic storms in Sofia in December 2011
Time zone — UTC+02 (Sofia | 42.68 N 23.32 E)
Geomagnetic activity indices on December 21, 2011
| Geomagnetic index Ap | 5 |
|---|---|
| Solar radio flux F10.7 | 145 |