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Geomagnetic activity in July 1959
Mean Ap31.9No. 20 of 1138
G1+ days11
G3+ days5
Max Ap23615 Jul 1959
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 11 Jul 1959 | 7- | 44 | G3 |
| 12 Jul 1959 | 6+ | 24 | G2 |
| 15 Jul 1959 | 9o | 236 | G5 |
| 16 Jul 1959 | 7+ | 47 | G3 |
| 17 Jul 1959 | 9- | 110 | G5 |
| 18 Jul 1959 | 8o | 119 | G4 |
| 19 Jul 1959 | 5o | 31 | G1 |
| 24 Jul 1959 | 5+ | 28 | G1 |
| 25 Jul 1959 | 5+ | 38 | G1 |
| 26 Jul 1959 | 5o | 33 | G1 |
| 27 Jul 1959 | 5- | 25 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1958 | 24.7 | 15 | 3 |
| July 1959 | 31.9 | 11 | 5 |
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 31.9 in July 1959, No. 20 of 1138 months since 1932; 11 days reached G1 or higher.