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Geomagnetic activity in September 1980
Mean Ap8.0No. 937 of 1138
G1+ days0
G3+ days0
Max Ap1812 Sep 1980
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| – | – | – | – |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 1979 | 13.7 | 4 | 1 |
| September 1980 | 8.0 | 0 | 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 8.0 in September 1980, No. 937 of 1138 months since 1932; 0 days reached G1 or higher.