Aurora & Space WeatherHome › Geomagnetic history › 1975
Geomagnetic activity in June 1975
Mean Ap11.3No. 645 of 1138
G1+ days5
G3+ days0
Max Ap282 Jun 1975
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Jun 1975 | 6- | 24 | G2 |
| 2 Jun 1975 | 5o | 28 | G1 |
| 12 Jun 1975 | 5o | 27 | G1 |
| 29 Jun 1975 | 6- | 26 | G2 |
| 30 Jun 1975 | 5o | 22 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| June 1974 | 17.3 | 9 | 0 |
| June 1975 | 11.3 | 5 | 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 11.3 in June 1975, No. 645 of 1138 months since 1932; 5 days reached G1 or higher.