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Geomagnetic activity in May 1974
Mean Ap17.8No. 208 of 1138
G1+ days14
G3+ days0
Max Ap3924 May 1974
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 2 May 1974 | 5- | 18 | G1 |
| 3 May 1974 | 6- | 24 | G2 |
| 4 May 1974 | 5o | 34 | G1 |
| 5 May 1974 | 5+ | 35 | G1 |
| 7 May 1974 | 5o | 15 | G1 |
| 15 May 1974 | 5+ | 30 | G1 |
| 16 May 1974 | 5- | 26 | G1 |
| 17 May 1974 | 6- | 38 | G2 |
| 18 May 1974 | 5- | 24 | G1 |
| 22 May 1974 | 5o | 22 | G1 |
| 23 May 1974 | 5+ | 25 | G1 |
| 24 May 1974 | 6- | 39 | G2 |
| 30 May 1974 | 5- | 17 | G1 |
| 31 May 1974 | 6o | 30 | G2 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| May 1973 | 16.8 | 9 | 2 |
| May 1974 | 17.8 | 14 | 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.
About this page
Mean Ap 17.8 in May 1974, No. 208 of 1138 months since 1932; 14 days reached G1 or higher.