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Geomagnetic activity in July 1988
Mean Ap10.5No. 706 of 1138
G1+ days3
G3+ days0
Max Ap2722 Jul 1988
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 16 Jul 1988 | 5o | 22 | G1 |
| 21 Jul 1988 | 6- | 26 | G2 |
| 22 Jul 1988 | 5- | 27 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| July 1987 | 10.8 | 4 | 1 |
| July 1988 | 10.5 | 3 | 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 10.5 in July 1988, No. 706 of 1138 months since 1932; 3 days reached G1 or higher.