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Geomagnetic activity in May 1941
Mean Ap10.8No. 684 of 1138
G1+ days4
G3+ days0
Max Ap3122 May 1941
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 17 May 1941 | 5+ | 25 | G1 |
| 21 May 1941 | 5o | 19 | G1 |
| 22 May 1941 | 5o | 31 | G1 |
| 23 May 1941 | 5o | 23 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1940 | 13.4 | 6 | 1 |
| May 1941 | 10.8 | 4 | 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 10.8 in May 1941, No. 684 of 1138 months since 1932; 4 days reached G1 or higher.