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Geomagnetic activity in October 1941
Mean Ap11.3No. 638 of 1138
G1+ days4
G3+ days2
Max Ap4731 Oct 1941
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 11 Oct 1941 | 7- | 42 | G3 |
| 12 Oct 1941 | 6o | 24 | G2 |
| 22 Oct 1941 | 6+ | 33 | G2 |
| 31 Oct 1941 | 7- | 47 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1940 | 14.2 | 7 | 3 |
| October 1941 | 11.3 | 4 | 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.
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About this page
Mean Ap 11.3 in October 1941, No. 638 of 1138 months since 1932; 4 days reached G1 or higher.