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Geomagnetic activity in January 1958
Mean Ap14.7No. 374 of 1138
G1+ days7
G3+ days1
Max Ap481 Jan 1958
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Jan 1958 | 6+ | 48 | G2 |
| 14 Jan 1958 | 5- | 15 | G1 |
| 18 Jan 1958 | 5o | 30 | G1 |
| 20 Jan 1958 | 5+ | 20 | G1 |
| 21 Jan 1958 | 7- | 33 | G3 |
| 22 Jan 1958 | 5- | 19 | G1 |
| 26 Jan 1958 | 5o | 16 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1957 | 16.7 | 9 | 2 |
| January 1958 | 14.7 | 7 | 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.
← December 1957February 1958 →
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Mean Ap 14.7 in January 1958, No. 374 of 1138 months since 1932; 7 days reached G1 or higher.