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Geomagnetic activity in October 2011
Mean Ap7.3No. 982 of 1138
G1+ days3
G3+ days2
Max Ap3825 Oct 2011
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Oct 2011 | 5- | 16 | G1 |
| 24 Oct 2011 | 7o | 26 | G3 |
| 25 Oct 2011 | 7+ | 38 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2010 | 6.1 | 1 | 0 |
| October 2011 | 7.3 | 3 | 2 |
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.
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About this page
Mean Ap 7.3 in October 2011, No. 982 of 1138 months since 1932; 3 days reached G1 or higher.