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Geomagnetic storm on 28 Sep 1969 (G3)
Max Kp7oG3
Ap47No. 11 in 1969
Consecutive G1+ days3
Ap rank1,079since 1932
Kp by 3-hour slot (UTC)
3-
4-
3o
7o
6+
4+
4-
5o
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 25 Sep 1969 | 3+ | 10 | – |
| 26 Sep 1969 | 2- | 4 | – |
| 27 Sep 1969 | 4+ | 6 | – |
| 28 Sep 1969 | 7o | 47 | G3 |
| 29 Sep 1969 | 7o | 71 | G3 |
| 30 Sep 1969 | 8o | 90 | G4 |
| 1 Oct 1969 | 4+ | 20 | – |
Highest-Ap days of 1969
131
90
79
71
62
60
54
50
47
47
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
Max Kp 7o, Ap 47: No. 1,079 of 34,615 days since 1932 by Ap.