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Geomagnetic activity in April 1980
Mean Ap11.5No. 626 of 1138
G1+ days8
G3+ days0
Max Ap3011 Apr 1980
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 Apr 1980 | 5+ | 28 | G1 |
| 7 Apr 1980 | 5- | 18 | G1 |
| 9 Apr 1980 | 5- | 20 | G1 |
| 10 Apr 1980 | 5o | 22 | G1 |
| 11 Apr 1980 | 6- | 30 | G2 |
| 12 Apr 1980 | 5+ | 28 | G1 |
| 13 Apr 1980 | 5- | 18 | G1 |
| 15 Apr 1980 | 5- | 20 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1979 | 25.2 | 15 | 4 |
| April 1980 | 11.5 | 8 | 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 11.5 in April 1980, No. 626 of 1138 months since 1932; 8 days reached G1 or higher.