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Geomagnetic activity in March 1973
Mean Ap25.4No. 57 of 1138
G1+ days14
G3+ days2
Max Ap8219 Mar 1973
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Mar 1973 | 5+ | 22 | G1 |
| 2 Mar 1973 | 5o | 40 | G1 |
| 6 Mar 1973 | 6- | 28 | G2 |
| 18 Mar 1973 | 5o | 20 | G1 |
| 19 Mar 1973 | 7o | 82 | G3 |
| 20 Mar 1973 | 7- | 80 | G3 |
| 21 Mar 1973 | 6o | 58 | G2 |
| 22 Mar 1973 | 6o | 53 | G2 |
| 23 Mar 1973 | 6- | 50 | G2 |
| 24 Mar 1973 | 6- | 49 | G2 |
| 25 Mar 1973 | 5+ | 50 | G1 |
| 26 Mar 1973 | 6+ | 32 | G2 |
| 27 Mar 1973 | 5- | 28 | G1 |
| 31 Mar 1973 | 6o | 33 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| March 1972 | 12.3 | 9 | 1 |
| March 1973 | 25.4 | 14 | 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.
About this page
Mean Ap 25.4 in March 1973, No. 57 of 1138 months since 1932; 14 days reached G1 or higher.