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Geomagnetic activity in October 2015
Mean Ap14.0No. 435 of 1138
G1+ days6
G3+ days1
Max Ap747 Oct 2015
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Oct 2015 | 5o | 18 | G1 |
| 7 Oct 2015 | 7+ | 74 | G3 |
| 8 Oct 2015 | 6- | 45 | G2 |
| 9 Oct 2015 | 5- | 27 | G1 |
| 12 Oct 2015 | 5o | 21 | G1 |
| 18 Oct 2015 | 5- | 19 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2014 | 9.1 | 2 | 0 |
| October 2015 | 14.0 | 6 | 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 14.0 in October 2015, No. 435 of 1138 months since 1932; 6 days reached G1 or higher.