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Geomagnetic activity in September 1935
Mean Ap13.0No. 507 of 1138
G1+ days9
G3+ days0
Max Ap5011 Sep 1935
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 11 Sep 1935 | 6+ | 50 | G2 |
| 12 Sep 1935 | 6o | 24 | G2 |
| 17 Sep 1935 | 5o | 23 | G1 |
| 18 Sep 1935 | 5- | 21 | G1 |
| 23 Sep 1935 | 6- | 28 | G2 |
| 24 Sep 1935 | 5o | 17 | G1 |
| 25 Sep 1935 | 6o | 46 | G2 |
| 26 Sep 1935 | 5- | 17 | G1 |
| 30 Sep 1935 | 5- | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 1934 | 10.2 | 4 | 0 |
| September 1935 | 13.0 | 9 | 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 13.0 in September 1935, No. 507 of 1138 months since 1932; 9 days reached G1 or higher.