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Geomagnetic activity in July 1974
Mean Ap23.7No. 79 of 1138
G1+ days12
G3+ days3
Max Ap1306 Jul 1974
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Jul 1974 | 5+ | 31 | G1 |
| 5 Jul 1974 | 7- | 74 | G3 |
| 6 Jul 1974 | 9- | 130 | G5 |
| 8 Jul 1974 | 6- | 36 | G2 |
| 12 Jul 1974 | 5- | 23 | G1 |
| 14 Jul 1974 | 5+ | 23 | G1 |
| 23 Jul 1974 | 7o | 82 | G3 |
| 24 Jul 1974 | 6- | 51 | G2 |
| 25 Jul 1974 | 5- | 22 | G1 |
| 26 Jul 1974 | 5o | 20 | G1 |
| 27 Jul 1974 | 5- | 24 | G1 |
| 28 Jul 1974 | 5- | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1973 | 11.8 | 5 | 0 |
| July 1974 | 23.7 | 12 | 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.
About this page
Mean Ap 23.7 in July 1974, No. 79 of 1138 months since 1932; 12 days reached G1 or higher.