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Geomagnetic activity in January 1955
Mean Ap12.1No. 573 of 1138
G1+ days6
G3+ days2
Max Ap5918 Jan 1955
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Jan 1955 | 5- | 20 | G1 |
| 11 Jan 1955 | 5o | 16 | G1 |
| 12 Jan 1955 | 5o | 9 | G1 |
| 17 Jan 1955 | 7- | 43 | G3 |
| 18 Jan 1955 | 8- | 59 | G4 |
| 19 Jan 1955 | 6+ | 53 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1954 | 8.7 | 3 | 0 |
| January 1955 | 12.1 | 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.
← December 1954February 1955 →
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Mean Ap 12.1 in January 1955, No. 573 of 1138 months since 1932; 6 days reached G1 or higher.