Maximum Kp index on April 21, 2004
Kp = 3
Maximum Kp index on April 21, 2004
The Earth's magnetosphere was quiet
Kp = 3
Geomagnetic storms in Saint Catharines on April 21, 2004
Time zone — UTC−04 — summer time (Saint Catharines | 43.18 N 79.24 W)
Geomagnetic storms in Saint Catharines in April 2004
Time zone — UTC−04 — summer time (Saint Catharines | 43.18 N 79.24 W)
Geomagnetic activity indices on April 21, 2004
| Geomagnetic index Ap | 5 |
|---|---|
| Solar radio flux F10.7 | 113 |