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Geomagnetic activity in September 1933
Mean Ap11.7No. 609 of 1138
G1+ days5
G3+ days1
Max Ap549 Sep 1933
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Sep 1933 | 7- | 54 | G3 |
| 10 Sep 1933 | 5- | 20 | G1 |
| 13 Sep 1933 | 6o | 26 | G2 |
| 14 Sep 1933 | 5- | 20 | G1 |
| 15 Sep 1933 | 6o | 27 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 1932 | 12.1 | 5 | 0 |
| September 1933 | 11.7 | 5 | 1 |
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 11.7 in September 1933, No. 609 of 1138 months since 1932; 5 days reached G1 or higher.