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Geomagnetic activity in January 1961
Mean Ap11.8No. 594 of 1138
G1+ days5
G3+ days0
Max Ap4120 Jan 1961
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Jan 1961 | 5o | 30 | G1 |
| 15 Jan 1961 | 6- | 19 | G2 |
| 18 Jan 1961 | 5- | 17 | G1 |
| 19 Jan 1961 | 6- | 26 | G2 |
| 20 Jan 1961 | 6o | 41 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1960 | 14.9 | 8 | 0 |
| January 1961 | 11.8 | 5 | 0 |
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 11.8 in January 1961, No. 594 of 1138 months since 1932; 5 days reached G1 or higher.