Maximum Kp index on September 21, 2004
Kp = 3
Maximum Kp index on September 21, 2004
The Earth's magnetosphere was quiet
Kp = 3
Geomagnetic storms in Peterborough on September 21, 2004
Time zone — UTC−04 — summer time (Peterborough | 44.3 N 78.34 W)
Geomagnetic storms in Peterborough in September 2004
Time zone — UTC−04 — summer time (Peterborough | 44.3 N 78.34 W)
Geomagnetic activity indices on September 21, 2004
| Geomagnetic index Ap | 9 |
|---|---|
| Solar radio flux F10.7 | 95 |