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Geomagnetic activity in October 1986
Mean Ap10.5No. 699 of 1138
G1+ days5
G3+ days1
Max Ap3114 Oct 1986
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Oct 1986 | 5+ | 23 | G1 |
| 13 Oct 1986 | 7- | 28 | G3 |
| 14 Oct 1986 | 5+ | 31 | G1 |
| 19 Oct 1986 | 5- | 21 | G1 |
| 27 Oct 1986 | 5- | 16 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1985 | 14.1 | 7 | 1 |
| October 1986 | 10.5 | 5 | 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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Mean Ap 10.5 in October 1986, No. 699 of 1138 months since 1932; 5 days reached G1 or higher.