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Geomagnetic activity in August 1974
Mean Ap19.4No. 168 of 1138
G1+ days15
G3+ days0
Max Ap4620 Aug 1974
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Aug 1974 | 5+ | 22 | G1 |
| 3 Aug 1974 | 5+ | 35 | G1 |
| 4 Aug 1974 | 6o | 24 | G2 |
| 6 Aug 1974 | 5- | 20 | G1 |
| 7 Aug 1974 | 5- | 22 | G1 |
| 8 Aug 1974 | 5- | 16 | G1 |
| 19 Aug 1974 | 5+ | 40 | G1 |
| 20 Aug 1974 | 6o | 46 | G2 |
| 21 Aug 1974 | 6- | 39 | G2 |
| 22 Aug 1974 | 5+ | 37 | G1 |
| 23 Aug 1974 | 5+ | 36 | G1 |
| 24 Aug 1974 | 5+ | 26 | G1 |
| 28 Aug 1974 | 5- | 20 | G1 |
| 29 Aug 1974 | 6- | 31 | G2 |
| 30 Aug 1974 | 5- | 17 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| August 1973 | 12.1 | 5 | 0 |
| August 1974 | 19.4 | 15 | 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 19.4 in August 1974, No. 168 of 1138 months since 1932; 15 days reached G1 or higher.