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Geomagnetic activity in October 1964
Mean Ap9.6No. 790 of 1138
G1+ days3
G3+ days0
Max Ap304 Oct 1964
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Oct 1964 | 5o | 30 | G1 |
| 19 Oct 1964 | 5- | 26 | G1 |
| 26 Oct 1964 | 5+ | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1963 | 15.4 | 9 | 3 |
| October 1964 | 9.6 | 3 | 0 |
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 1964November 1964 →
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Mean Ap 9.6 in October 1964, No. 790 of 1138 months since 1932; 3 days reached G1 or higher.