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Geomagnetic activity in October 1945
Mean Ap11.3No. 640 of 1138
G1+ days6
G3+ days0
Max Ap5224 Oct 1945
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 7 Oct 1945 | 5- | 10 | G1 |
| 12 Oct 1945 | 5+ | 30 | G1 |
| 24 Oct 1945 | 6o | 52 | G2 |
| 25 Oct 1945 | 6o | 43 | G2 |
| 27 Oct 1945 | 5+ | 13 | G1 |
| 28 Oct 1945 | 6+ | 36 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 1944 | 11.2 | 3 | 0 |
| October 1945 | 11.3 | 6 | 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.
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Mean Ap 11.3 in October 1945, No. 640 of 1138 months since 1932; 6 days reached G1 or higher.