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Geomagnetic activity in April 1966
Mean Ap6.6No. 1029 of 1138
G1+ days3
G3+ days0
Max Ap181 Apr 1966
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Apr 1966 | 5+ | 18 | G1 |
| 2 Apr 1966 | 5- | 13 | G1 |
| 7 Apr 1966 | 5- | 10 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1965 | 7.9 | 1 | 1 |
| April 1966 | 6.6 | 3 | 0 |
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 6.6 in April 1966, No. 1029 of 1138 months since 1932; 3 days reached G1 or higher.