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Geomagnetic activity in September 1976
Mean Ap13.1No. 495 of 1138
G1+ days5
G3+ days0
Max Ap5120 Sep 1976
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Sep 1976 | 5o | 24 | G1 |
| 18 Sep 1976 | 6o | 33 | G2 |
| 20 Sep 1976 | 6o | 51 | G2 |
| 21 Sep 1976 | 5- | 24 | G1 |
| 26 Sep 1976 | 5- | 13 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 1975 | 9.7 | 3 | 0 |
| September 1976 | 13.1 | 5 | 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 13.1 in September 1976, No. 495 of 1138 months since 1932; 5 days reached G1 or higher.