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Geomagnetic storm on 2 May 1978 (G3)

Max Kp7+G3

Ap94No. 4 in 1978

Consecutive G1+ days5

Ap rank195since 1932

Kp by 3-hour slot (UTC)

00–037+

03–066-

06–097+

09–127o

12–157o

15–185+

18–214-

21–245-

The days around it

Date	Max Kp	Ap	Level
29 Apr 1978	2+	6	–
30 Apr 1978	8o	58	G4
1 May 1978	8+	88	G4
2 May 1978	7+	94	G3
3 May 1978	7o	83	G3
4 May 1978	8-	96	G4
5 May 1978	4-	7	–

Highest-Ap days of 1978

28 Aug 1978124

29 Sep 1978109

4 May 197896

2 May 197894

4 Jan 197889

1 May 197888

9 May 197885

3 May 197883

2 Jun 197882

4 Jul 197880

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.

← 1 May 1978 3 May 1978 →

About this page

Max Kp 7+, Ap 94: No. 195 of 34,615 days since 1932 by Ap.