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Geomagnetic storm on 4 Apr 1978 (G3)
Max Kp7oG3
Ap55No. 15 in 1978
Consecutive G1+ days4
Ap rank733since 1932
Kp by 3-hour slot (UTC)
5+
5o
5-
2+
2-
5+
7o
6+
The days around it
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Apr 1978 | 4o | 12 | – |
| 2 Apr 1978 | 5- | 15 | G1 |
| 3 Apr 1978 | 6o | 41 | G2 |
| 4 Apr 1978 | 7o | 55 | G3 |
| 5 Apr 1978 | 5+ | 21 | G1 |
| 6 Apr 1978 | 3o | 9 | – |
| 7 Apr 1978 | 2+ | 5 | – |
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 7o, Ap 55: No. 733 of 34,615 days since 1932 by Ap.