Aurora & Space WeatherHome › Geomagnetic history › 2009
Geomagnetic activity in June 2009
Mean Ap4.1No. 1127 of 1138
G1+ days1
G3+ days0
Max Ap1624 Jun 2009
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 24 Jun 2009 | 5o | 16 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| June 2008 | 6.7 | 1 | 0 |
| June 2009 | 4.1 | 1 | 0 |
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.
About this page
Mean Ap 4.1 in June 2009, No. 1127 of 1138 months since 1932; 1 days reached G1 or higher.