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Geomagnetic activity in April 1933
Mean Ap12.5No. 545 of 1138
G1+ days7
G3+ days0
Max Ap3017 Apr 1933
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 15 Apr 1933 | 5- | 18 | G1 |
| 16 Apr 1933 | 5- | 20 | G1 |
| 17 Apr 1933 | 6- | 30 | G2 |
| 18 Apr 1933 | 5- | 22 | G1 |
| 19 Apr 1933 | 5o | 26 | G1 |
| 21 Apr 1933 | 6- | 22 | G2 |
| 30 Apr 1933 | 5+ | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| April 1932 | 17.3 | 13 | 0 |
| April 1933 | 12.5 | 7 | 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 12.5 in April 1933, No. 545 of 1138 months since 1932; 7 days reached G1 or higher.