Maximum Kp index on September 17, 2025
Kp = 3+
Maximum Kp index on September 17, 2025
The Earth's magnetosphere was quiet
Kp = 3+
Geomagnetic storms in New York on September 17, 2025
Time zone — UTC−04 — summer time (New York | 40.66 N 73.94 W)
Geomagnetic storms in New York in September 2025
Time zone — UTC−04 — summer time (New York | 40.66 N 73.94 W)
Geomagnetic activity indices on September 17, 2025
| Geomagnetic index Ap | 12 |
|---|---|
| Solar radio flux F10.7 | 147 |