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Geomagnetic activity in May 1970
Mean Ap9.1No. 831 of 1138
G1+ days2
G3+ days1
Max Ap4528 May 1970
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 27 May 1970 | 5o | 15 | G1 |
| 28 May 1970 | 7o | 45 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1969 | 17.1 | 6 | 2 |
| May 1970 | 9.1 | 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 9.1 in May 1970, No. 831 of 1138 months since 1932; 2 days reached G1 or higher.