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Geomagnetic activity in October 2013
Mean Ap7.8No. 956 of 1138
G1+ days3
G3+ days1
Max Ap582 Oct 2013
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Oct 2013 | 8- | 58 | G4 |
| 8 Oct 2013 | 6- | 17 | G2 |
| 9 Oct 2013 | 5+ | 29 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2012 | 10.0 | 4 | 2 |
| October 2013 | 7.8 | 3 | 1 |
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 7.8 in October 2013, No. 956 of 1138 months since 1932; 3 days reached G1 or higher.