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Geomagnetic storm on 1 Nov 1991 (G4)

Max Kp8+G4

Ap109No. 11 in 1991

Consecutive G1+ days11

Ap rank133since 1932

Kp by 3-hour slot (UTC)

00–035+

03–063+

06–095+

09–125+

12–157-

15–188o

18–218+

21–247o

The days around it

Date	Max Kp	Ap	Level
29 Oct 1991	8+	128	G4
30 Oct 1991	6-	34	G2
31 Oct 1991	7o	59	G3
1 Nov 1991	8+	109	G4
2 Nov 1991	7o	41	G3
3 Nov 1991	4o	17	–
4 Nov 1991	6o	38	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.

← 31 Oct 1991 2 Nov 1991 →

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Max Kp 8+, Ap 109: No. 133 of 34,615 days since 1932 by Ap.