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Geomagnetic activity in April 1988
Mean Ap16.0No. 298 of 1138
G1+ days6
G3+ days2
Max Ap784 Apr 1988
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Apr 1988 | 8o | 48 | G4 |
| 4 Apr 1988 | 7+ | 78 | G3 |
| 5 Apr 1988 | 6- | 24 | G2 |
| 6 Apr 1988 | 6+ | 48 | G2 |
| 22 Apr 1988 | 5+ | 44 | G1 |
| 23 Apr 1988 | 5o | 21 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1987 | 7.0 | 1 | 0 |
| April 1988 | 16.0 | 6 | 2 |
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 16.0 in April 1988, No. 298 of 1138 months since 1932; 6 days reached G1 or higher.