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Geomagnetic activity in March 1974
Mean Ap22.7No. 97 of 1138
G1+ days15
G3+ days2
Max Ap6821 Mar 1974
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Mar 1974 | 5- | 20 | G1 |
| 3 Mar 1974 | 5- | 20 | G1 |
| 9 Mar 1974 | 5+ | 33 | G1 |
| 10 Mar 1974 | 5+ | 30 | G1 |
| 11 Mar 1974 | 5o | 32 | G1 |
| 16 Mar 1974 | 7o | 42 | G3 |
| 20 Mar 1974 | 6+ | 23 | G2 |
| 21 Mar 1974 | 7- | 68 | G3 |
| 22 Mar 1974 | 6o | 39 | G2 |
| 23 Mar 1974 | 6o | 42 | G2 |
| 24 Mar 1974 | 5+ | 34 | G1 |
| 25 Mar 1974 | 5o | 28 | G1 |
| 27 Mar 1974 | 5- | 22 | G1 |
| 29 Mar 1974 | 5o | 34 | G1 |
| 30 Mar 1974 | 5- | 20 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| March 1973 | 25.4 | 14 | 2 |
| March 1974 | 22.7 | 15 | 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 22.7 in March 1974, No. 97 of 1138 months since 1932; 15 days reached G1 or higher.