Maximum Kp index on April 21, 2011
Kp = 2
Maximum Kp index on April 21, 2011
The Earth's magnetosphere was quiet
Kp = 2
Geomagnetic storms in Sofia on April 21, 2011
Time zone — UTC+03 — summer time (Sofia | 42.68 N 23.32 E)
Geomagnetic storms in Sofia in April 2011
Time zone — UTC+03 — summer time (Sofia | 42.68 N 23.32 E)
Geomagnetic activity indices on April 21, 2011
| Geomagnetic index Ap | 5 |
|---|---|
| Solar radio flux F10.7 | 113 |