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Geomagnetic activity in January 1943
Mean Ap10.8No. 680 of 1138
G1+ days6
G3+ days1
Max Ap4020 Jan 1943
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Jan 1943 | 5+ | 30 | G1 |
| 5 Jan 1943 | 5- | 18 | G1 |
| 17 Jan 1943 | 5+ | 25 | G1 |
| 20 Jan 1943 | 7- | 40 | G3 |
| 21 Jan 1943 | 5- | 28 | G1 |
| 22 Jan 1943 | 6- | 28 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1942 | 9.1 | 3 | 0 |
| January 1943 | 10.8 | 6 | 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.
← December 1942February 1943 →
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Mean Ap 10.8 in January 1943, No. 680 of 1138 months since 1932; 6 days reached G1 or higher.