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Geomagnetic activity in October 1988
Mean Ap12.5No. 543 of 1138
G1+ days3
G3+ days1
Max Ap8510 Oct 1988
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Oct 1988 | 6- | 38 | G2 |
| 10 Oct 1988 | 8- | 85 | G4 |
| 18 Oct 1988 | 5o | 30 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1987 | 15.6 | 10 | 0 |
| October 1988 | 12.5 | 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 12.5 in October 1988, No. 543 of 1138 months since 1932; 3 days reached G1 or higher.