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Geomagnetic activity in September 1943
Mean Ap25.4No. 55 of 1138
G1+ days18
G3+ days2
Max Ap6630 Sep 1943
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Sep 1943 | 6- | 36 | G2 |
| 2 Sep 1943 | 5+ | 34 | G1 |
| 3 Sep 1943 | 6- | 48 | G2 |
| 4 Sep 1943 | 5o | 28 | G1 |
| 5 Sep 1943 | 5- | 23 | G1 |
| 8 Sep 1943 | 6o | 26 | G2 |
| 9 Sep 1943 | 6o | 38 | G2 |
| 10 Sep 1943 | 5+ | 32 | G1 |
| 11 Sep 1943 | 5- | 24 | G1 |
| 13 Sep 1943 | 5o | 28 | G1 |
| 18 Sep 1943 | 5- | 9 | G1 |
| 21 Sep 1943 | 5- | 23 | G1 |
| 22 Sep 1943 | 5- | 22 | G1 |
| 26 Sep 1943 | 6o | 38 | G2 |
| 27 Sep 1943 | 5+ | 36 | G1 |
| 28 Sep 1943 | 6o | 46 | G2 |
| 29 Sep 1943 | 7- | 61 | G3 |
| 30 Sep 1943 | 7o | 66 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 1942 | 16.9 | 13 | 1 |
| September 1943 | 25.4 | 18 | 2 |
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 25.4 in September 1943, No. 55 of 1138 months since 1932; 18 days reached G1 or higher.