Maximum Kp index on September 18, 2021
Kp = 4
Maximum Kp index on September 18, 2021
Geomagnetic disturbances were observed
Kp = 4
Geomagnetic storms in Indianapolis on September 18, 2021
Time zone — UTC−04 — summer time (Indianapolis | 39.79 N 86.15 W)
Geomagnetic storms in Indianapolis in September 2021
Time zone — UTC−04 — summer time (Indianapolis | 39.79 N 86.15 W)
Geomagnetic activity indices on September 18, 2021
| Geomagnetic index Ap | 11 |
|---|---|
| Solar radio flux F10.7 | 74 |