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Geomagnetic activity in April 1979
Mean Ap25.2No. 61 of 1138
G1+ days15
G3+ days4
Max Ap12625 Apr 1979
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Apr 1979 | 6+ | 33 | G2 |
| 2 Apr 1979 | 6+ | 36 | G2 |
| 3 Apr 1979 | 8o | 54 | G4 |
| 4 Apr 1979 | 7- | 47 | G3 |
| 5 Apr 1979 | 7- | 52 | G3 |
| 14 Apr 1979 | 5- | 15 | G1 |
| 16 Apr 1979 | 5- | 16 | G1 |
| 21 Apr 1979 | 5o | 21 | G1 |
| 22 Apr 1979 | 6- | 45 | G2 |
| 23 Apr 1979 | 5o | 23 | G1 |
| 25 Apr 1979 | 8o | 126 | G4 |
| 27 Apr 1979 | 5o | 27 | G1 |
| 28 Apr 1979 | 5+ | 31 | G1 |
| 29 Apr 1979 | 6- | 47 | G2 |
| 30 Apr 1979 | 5+ | 26 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1978 | 23.4 | 16 | 5 |
| April 1979 | 25.2 | 15 | 4 |
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 25.2 in April 1979, No. 61 of 1138 months since 1932; 15 days reached G1 or higher.