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Geomagnetic activity in February 1973
Mean Ap20.2No. 144 of 1138
G1+ days10
G3+ days1
Max Ap5424 Feb 1973
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 9 Feb 1973 | 5- | 20 | G1 |
| 17 Feb 1973 | 5- | 16 | G1 |
| 21 Feb 1973 | 7+ | 49 | G3 |
| 22 Feb 1973 | 6+ | 46 | G2 |
| 23 Feb 1973 | 6- | 48 | G2 |
| 24 Feb 1973 | 6o | 54 | G2 |
| 25 Feb 1973 | 5o | 31 | G1 |
| 26 Feb 1973 | 5o | 34 | G1 |
| 27 Feb 1973 | 6o | 44 | G2 |
| 28 Feb 1973 | 5o | 20 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| February 1972 | 10.1 | 5 | 0 |
| February 1973 | 20.2 | 10 | 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.
About this page
Mean Ap 20.2 in February 1973, No. 144 of 1138 months since 1932; 10 days reached G1 or higher.