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Geomagnetic storm on 29 Apr 1991 (G3)

Max Kp7-G3

Ap59No. 26 in 1991

Consecutive G1+ days6

Ap rank639since 1932

Kp by 3-hour slot (UTC)

00–036o

03–065o

06–095-

09–125+

12–157-

15–186-

18–214+

21–245-

The days around it

Date	Max Kp	Ap	Level
26 Apr 1991	4+	12	–
27 Apr 1991	5+	24	G1
28 Apr 1991	5o	33	G1
29 Apr 1991	7-	59	G3
30 Apr 1991	5+	34	G1
1 May 1991	5-	27	G1
2 May 1991	6o	45	G2

Highest-Ap days of 1991

5 Jun 1991196

24 Mar 1991161

13 Jul 1991134

25 Mar 1991130

29 Oct 1991128

13 Jun 1991120

10 Jun 1991119

9 Nov 1991119

9 Jul 1991117

26 Mar 1991114

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.

← 4 Apr 1991 31 May 1991 →

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Max Kp 7-, Ap 59: No. 639 of 34,615 days since 1932 by Ap.