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Geomagnetic activity in May 1946
Mean Ap17.6No. 227 of 1138
G1+ days10
G3+ days3
Max Ap499 May 1946
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 6 May 1946 | 7- | 41 | G3 |
| 7 May 1946 | 7- | 37 | G3 |
| 8 May 1946 | 6+ | 34 | G2 |
| 9 May 1946 | 6o | 49 | G2 |
| 11 May 1946 | 7- | 41 | G3 |
| 20 May 1946 | 5o | 11 | G1 |
| 21 May 1946 | 5o | 31 | G1 |
| 22 May 1946 | 6+ | 49 | G2 |
| 23 May 1946 | 6- | 38 | G2 |
| 31 May 1946 | 5- | 15 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1945 | 9.0 | 0 | 0 |
| May 1946 | 17.6 | 10 | 3 |
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 17.6 in May 1946, No. 227 of 1138 months since 1932; 10 days reached G1 or higher.