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Geomagnetic activity in April 1965
Mean Ap7.9No. 947 of 1138
G1+ days1
G3+ days1
Max Ap6818 Apr 1965
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 18 Apr 1965 | 8- | 68 | G4 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1964 | 13.3 | 9 | 1 |
| April 1965 | 7.9 | 1 | 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 7.9 in April 1965, No. 947 of 1138 months since 1932; 1 days reached G1 or higher.