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Geomagnetic activity in September 1967
Mean Ap16.2No. 288 of 1138
G1+ days8
G3+ days1
Max Ap8521 Sep 1967
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Sep 1967 | 5- | 25 | G1 |
| 13 Sep 1967 | 5o | 29 | G1 |
| 19 Sep 1967 | 5- | 18 | G1 |
| 20 Sep 1967 | 6- | 44 | G2 |
| 21 Sep 1967 | 7+ | 85 | G3 |
| 28 Sep 1967 | 5+ | 36 | G1 |
| 29 Sep 1967 | 5+ | 45 | G1 |
| 30 Sep 1967 | 5+ | 35 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| September 1966 | 21.0 | 7 | 2 |
| September 1967 | 16.2 | 8 | 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 16.2 in September 1967, No. 288 of 1138 months since 1932; 8 days reached G1 or higher.