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Geomagnetic activity in December 1975
Mean Ap11.9No. 592 of 1138
G1+ days6
G3+ days0
Max Ap3426 Dec 1975
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Dec 1975 | 5- | 32 | G1 |
| 2 Dec 1975 | 5- | 27 | G1 |
| 8 Dec 1975 | 5- | 18 | G1 |
| 9 Dec 1975 | 5- | 16 | G1 |
| 26 Dec 1975 | 5o | 34 | G1 |
| 27 Dec 1975 | 5+ | 31 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| December 1974 | 15.5 | 6 | 0 |
| December 1975 | 11.9 | 6 | 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.
About this page
Mean Ap 11.9 in December 1975, No. 592 of 1138 months since 1932; 6 days reached G1 or higher.