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Geomagnetic activity in April 1948
Mean Ap12.8No. 516 of 1138
G1+ days6
G3+ days2
Max Ap5022 Apr 1948
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Apr 1948 | 5- | 22 | G1 |
| 6 Apr 1948 | 6o | 24 | G2 |
| 14 Apr 1948 | 5- | 16 | G1 |
| 21 Apr 1948 | 7- | 24 | G3 |
| 22 Apr 1948 | 7o | 50 | G3 |
| 29 Apr 1948 | 5+ | 19 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1947 | 17.7 | 7 | 1 |
| April 1948 | 12.8 | 6 | 2 |
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 12.8 in April 1948, No. 516 of 1138 months since 1932; 6 days reached G1 or higher.