Maximum Kp index on December 21, 2008
Kp = 1
Maximum Kp index on December 21, 2008
The Earth's magnetosphere was quiet
Kp = 1
Geomagnetic storms in Concord on December 21, 2008
Time zone — UTC−05 (Concord | 43.22 N 71.55 W)
Geomagnetic storms in Concord in December 2008
Time zone — UTC−05 (Concord | 43.22 N 71.55 W)
Geomagnetic activity indices on December 21, 2008
| Geomagnetic index Ap | 2 |
|---|---|
| Solar radio flux F10.7 | 68 |