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Geomagnetic activity in January 1978
Mean Ap15.2No. 349 of 1138
G1+ days12
G3+ days1
Max Ap894 Jan 1978
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Jan 1978 | 5o | 13 | G1 |
| 4 Jan 1978 | 7+ | 89 | G3 |
| 5 Jan 1978 | 6o | 31 | G2 |
| 6 Jan 1978 | 6o | 34 | G2 |
| 7 Jan 1978 | 5- | 13 | G1 |
| 8 Jan 1978 | 5o | 19 | G1 |
| 9 Jan 1978 | 5o | 23 | G1 |
| 10 Jan 1978 | 5o | 21 | G1 |
| 18 Jan 1978 | 5- | 12 | G1 |
| 26 Jan 1978 | 5- | 12 | G1 |
| 29 Jan 1978 | 6- | 36 | G2 |
| 30 Jan 1978 | 6+ | 36 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1977 | 10.1 | 5 | 0 |
| January 1978 | 15.2 | 12 | 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.
← December 1977February 1978 →
About this page
Mean Ap 15.2 in January 1978, No. 349 of 1138 months since 1932; 12 days reached G1 or higher.