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Geomagnetic storm on 29 Sep 1978 (G4)
Max Kp8oG4
Ap109No. 2 in 1978
Consecutive G1+ days5
Ap rank131since 1932
Kp by 3-hour slot (UTC)
4+
7-
8-
8o
8o
7-
4-
2-
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 26 Sep 1978 | 6o | 36 | G2 |
| 27 Sep 1978 | 6+ | 51 | G2 |
| 28 Sep 1978 | 6+ | 50 | G2 |
| 29 Sep 1978 | 8o | 109 | G4 |
| 30 Sep 1978 | 4o | 11 | – |
| 1 Oct 1978 | 3+ | 13 | – |
| 2 Oct 1978 | 3+ | 12 | – |
Highest-Ap days of 1978
124
109
96
94
89
88
85
83
82
80
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 109: No. 131 of 34,615 days since 1932 by Ap.