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Geomagnetic activity in May 1949
Mean Ap18.5No. 193 of 1138
G1+ days8
G3+ days4
Max Ap15312 May 1949
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 May 1949 | 7o | 26 | G3 |
| 4 May 1949 | 6o | 31 | G2 |
| 5 May 1949 | 5o | 18 | G1 |
| 11 May 1949 | 5- | 15 | G1 |
| 12 May 1949 | 9- | 153 | G5 |
| 13 May 1949 | 8o | 59 | G4 |
| 30 May 1949 | 7- | 36 | G3 |
| 31 May 1949 | 6o | 34 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1948 | 18.8 | 12 | 1 |
| May 1949 | 18.5 | 8 | 4 |
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 18.5 in May 1949, No. 193 of 1138 months since 1932; 8 days reached G1 or higher.