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Geomagnetic activity in August 1975
Mean Ap10.3No. 724 of 1138
G1+ days5
G3+ days0
Max Ap295 Aug 1975
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Aug 1975 | 5- | 29 | G1 |
| 8 Aug 1975 | 5- | 14 | G1 |
| 10 Aug 1975 | 5- | 15 | G1 |
| 20 Aug 1975 | 5- | 15 | G1 |
| 29 Aug 1975 | 5+ | 27 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 1974 | 19.4 | 15 | 0 |
| August 1975 | 10.3 | 5 | 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 10.3 in August 1975, No. 724 of 1138 months since 1932; 5 days reached G1 or higher.