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Geomagnetic activity in October 1984
Mean Ap23.5No. 85 of 1138
G1+ days18
G3+ days3
Max Ap7519 Oct 1984
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Oct 1984 | 5+ | 20 | G1 |
| 6 Oct 1984 | 6- | 21 | G2 |
| 7 Oct 1984 | 6o | 43 | G2 |
| 8 Oct 1984 | 5o | 24 | G1 |
| 10 Oct 1984 | 5+ | 29 | G1 |
| 11 Oct 1984 | 5o | 28 | G1 |
| 12 Oct 1984 | 5+ | 32 | G1 |
| 13 Oct 1984 | 5- | 17 | G1 |
| 15 Oct 1984 | 5- | 14 | G1 |
| 18 Oct 1984 | 7- | 43 | G3 |
| 19 Oct 1984 | 7- | 75 | G3 |
| 20 Oct 1984 | 7- | 63 | G3 |
| 21 Oct 1984 | 6o | 47 | G2 |
| 22 Oct 1984 | 6- | 46 | G2 |
| 23 Oct 1984 | 5- | 27 | G1 |
| 24 Oct 1984 | 5+ | 39 | G1 |
| 25 Oct 1984 | 6- | 22 | G2 |
| 26 Oct 1984 | 5+ | 14 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1983 | 17.2 | 13 | 1 |
| October 1984 | 23.5 | 18 | 3 |
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 1984November 1984 →
About this page
Mean Ap 23.5 in October 1984, No. 85 of 1138 months since 1932; 18 days reached G1 or higher.