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Geomagnetic activity in May 1966
Mean Ap9.2No. 825 of 1138
G1+ days2
G3+ days1
Max Ap7826 May 1966
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 26 May 1966 | 7o | 78 | G3 |
| 31 May 1966 | 6+ | 48 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1965 | 5.8 | 2 | 0 |
| May 1966 | 9.2 | 2 | 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 9.2 in May 1966, No. 825 of 1138 months since 1932; 2 days reached G1 or higher.