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Geomagnetic activity in January 1951
Mean Ap15.9No. 307 of 1138
G1+ days8
G3+ days1
Max Ap5422 Jan 1951
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 3 Jan 1951 | 5o | 16 | G1 |
| 11 Jan 1951 | 5o | 19 | G1 |
| 16 Jan 1951 | 5- | 20 | G1 |
| 21 Jan 1951 | 5o | 20 | G1 |
| 22 Jan 1951 | 6o | 54 | G2 |
| 23 Jan 1951 | 5- | 22 | G1 |
| 27 Jan 1951 | 5- | 19 | G1 |
| 31 Jan 1951 | 7- | 49 | G3 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1950 | 11.6 | 2 | 1 |
| January 1951 | 15.9 | 8 | 1 |
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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Mean Ap 15.9 in January 1951, No. 307 of 1138 months since 1932; 8 days reached G1 or higher.