Aurora & Space WeatherHome › Geomagnetic history › 1978
Geomagnetic activity in October 1978
Mean Ap11.7No. 606 of 1138
G1+ days4
G3+ days0
Max Ap3218 Oct 1978
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 18 Oct 1978 | 5+ | 32 | G1 |
| 26 Oct 1978 | 5o | 18 | G1 |
| 27 Oct 1978 | 5+ | 23 | G1 |
| 30 Oct 1978 | 5- | 25 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1977 | 13.0 | 9 | 2 |
| October 1978 | 11.7 | 4 | 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 1978November 1978 →
About this page
Mean Ap 11.7 in October 1978, No. 606 of 1138 months since 1932; 4 days reached G1 or higher.