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Geomagnetic activity in January 1973
Mean Ap15.5No. 324 of 1138
G1+ days12
G3+ days0
Max Ap3327 Jan 1973
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Jan 1973 | 5o | 21 | G1 |
| 6 Jan 1973 | 5- | 20 | G1 |
| 8 Jan 1973 | 5o | 15 | G1 |
| 10 Jan 1973 | 5o | 28 | G1 |
| 11 Jan 1973 | 5- | 24 | G1 |
| 12 Jan 1973 | 5o | 25 | G1 |
| 20 Jan 1973 | 6o | 29 | G2 |
| 21 Jan 1973 | 5o | 22 | G1 |
| 24 Jan 1973 | 5- | 22 | G1 |
| 25 Jan 1973 | 5o | 20 | G1 |
| 27 Jan 1973 | 5o | 33 | G1 |
| 28 Jan 1973 | 6- | 33 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 1972 | 12.5 | 7 | 0 |
| January 1973 | 15.5 | 12 | 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.
← December 1972February 1973 →
About this page
Mean Ap 15.5 in January 1973, No. 324 of 1138 months since 1932; 12 days reached G1 or higher.