Aurora & Space WeatherHome › Geomagnetic history › 1969
Geomagnetic storm on 30 Sep 1969 (G4)
Max Kp8oG4
Ap90No. 2 in 1969
Consecutive G1+ days3
Ap rank220since 1932
Kp by 3-hour slot (UTC)
8o
7o
6+
7-
6o
4o
5+
3-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 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 | – |
| 2 Oct 1969 | 5+ | 31 | G1 |
| 3 Oct 1969 | 4o | 18 | – |
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 8o, Ap 90: No. 220 of 34,615 days since 1932 by Ap.