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Geomagnetic activity in May 1988
Mean Ap12.1No. 574 of 1138
G1+ days4
G3+ days1
Max Ap1066 May 1988
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 May 1988 | 6o | 20 | G2 |
| 6 May 1988 | 7+ | 106 | G3 |
| 17 May 1988 | 5o | 24 | G1 |
| 18 May 1988 | 5o | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1987 | 7.7 | 3 | 0 |
| May 1988 | 12.1 | 4 | 1 |
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 12.1 in May 1988, No. 574 of 1138 months since 1932; 4 days reached G1 or higher.