Aurora & Space WeatherHome › Geomagnetic history › 1946
Geomagnetic activity in April 1946
Mean Ap19.7No. 162 of 1138
G1+ days7
G3+ days3
Max Ap11723 Apr 1946
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Apr 1946 | 5o | 19 | G1 |
| 9 Apr 1946 | 6o | 36 | G2 |
| 14 Apr 1946 | 6o | 27 | G2 |
| 15 Apr 1946 | 7- | 61 | G3 |
| 23 Apr 1946 | 9- | 117 | G5 |
| 24 Apr 1946 | 8+ | 99 | G4 |
| 25 Apr 1946 | 5- | 11 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1945 | 13.1 | 8 | 1 |
| April 1946 | 19.7 | 7 | 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 19.7 in April 1946, No. 162 of 1138 months since 1932; 7 days reached G1 or higher.