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Geomagnetic activity in January 1949
Mean Ap20.3No. 142 of 1138
G1+ days9
G3+ days4
Max Ap15625 Jan 1949
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 Jan 1949 | 7- | 45 | G3 |
| 7 Jan 1949 | 5- | 17 | G1 |
| 10 Jan 1949 | 5o | 17 | G1 |
| 13 Jan 1949 | 5o | 16 | G1 |
| 18 Jan 1949 | 5- | 20 | G1 |
| 24 Jan 1949 | 7+ | 38 | G3 |
| 25 Jan 1949 | 9- | 156 | G5 |
| 26 Jan 1949 | 8+ | 100 | G4 |
| 27 Jan 1949 | 5- | 18 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1948 | 11.6 | 3 | 0 |
| January 1949 | 20.3 | 9 | 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.
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About this page
Mean Ap 20.3 in January 1949, No. 142 of 1138 months since 1932; 9 days reached G1 or higher.