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Geomagnetic storm on 23 May 1989 (G3)

Max Kp7+G3

Ap47No. 25 in 1989

Consecutive G1+ days3

Ap rank1,091since 1932

Kp by 3-hour slot (UTC)

00–032+

03–063-

06–091+

09–122o

12–156-

15–187+

18–216o

21–245-

The days around it

Date	Max Kp	Ap	Level
20 May 1989	5-	15	G1
21 May 1989	3-	8	–
22 May 1989	4o	12	–
23 May 1989	7+	47	G3
24 May 1989	6+	68	G2
25 May 1989	5-	24	G1
26 May 1989	4+	17	–

Highest-Ap days of 1989

13 Mar 1989246

14 Mar 1989158

21 Oct 1989146

20 Oct 1989112

17 Nov 1989109

10 Jun 198978

15 Aug 198977

26 Apr 198976

29 Mar 198971

19 Sep 198970

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.

← 5 May 1989 10 Jun 1989 →

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Max Kp 7+, Ap 47: No. 1,091 of 34,615 days since 1932 by Ap.