Maximum Kp index on December 28, 2025
Kp = 3
Maximum Kp index on December 28, 2025
The Earth's magnetosphere was quiet
Kp = 3
Geomagnetic storms in Cheyenne on December 28, 2025
Time zone — UTC−07 (Cheyenne | 41.15 N 104.8 W)
Geomagnetic storms in Cheyenne in December 2025
Time zone — UTC−07 (Cheyenne | 41.15 N 104.8 W)
Geomagnetic activity indices on December 28, 2025
| Geomagnetic index Ap | 9 |
|---|---|
| Solar radio flux F10.7 | 188 |