Aurora & Space WeatherHome › Geomagnetic history › 1986
Geomagnetic activity in May 1986
Mean Ap11.6No. 621 of 1138
G1+ days5
G3+ days3
Max Ap676 May 1986
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 May 1986 | 7- | 43 | G3 |
| 3 May 1986 | 7+ | 40 | G3 |
| 4 May 1986 | 5o | 17 | G1 |
| 5 May 1986 | 5+ | 17 | G1 |
| 6 May 1986 | 7- | 67 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1985 | 8.5 | 1 | 0 |
| May 1986 | 11.6 | 5 | 3 |
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 11.6 in May 1986, No. 621 of 1138 months since 1932; 5 days reached G1 or higher.