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Geomagnetic activity in October 1997
Mean Ap10.5No. 707 of 1138
G1+ days7
G3+ days1
Max Ap461 Oct 1997
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Oct 1997 | 7o | 46 | G3 |
| 10 Oct 1997 | 6+ | 30 | G2 |
| 11 Oct 1997 | 6+ | 25 | G2 |
| 24 Oct 1997 | 5+ | 20 | G1 |
| 25 Oct 1997 | 5o | 20 | G1 |
| 26 Oct 1997 | 5- | 18 | G1 |
| 27 Oct 1997 | 5- | 19 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1996 | 12.9 | 6 | 2 |
| October 1997 | 10.5 | 7 | 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.
← September 1997November 1997 →
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Mean Ap 10.5 in October 1997, No. 707 of 1138 months since 1932; 7 days reached G1 or higher.