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Geomagnetic storm on 31 Oct 2003 (G4)

Max Kp8+G4

Ap116No. 4 in 2003

Consecutive G1+ days5

Ap rank115since 1932

Kp by 3-hour slot (UTC)

00–038+

03–068-

06–097+

09–127-

12–157+

15–185-

18–214o

21–244+

The days around it

Date	Max Kp	Ap	Level
28 Oct 2003	5-	25	G1
29 Oct 2003	9o	204	G5
30 Oct 2003	9o	191	G5
31 Oct 2003	8+	116	G4
1 Nov 2003	5o	26	G1
2 Nov 2003	4+	18	–
3 Nov 2003	3+	13	–

Highest-Ap days of 2003

29 Oct 2003204

30 Oct 2003191

20 Nov 2003150

31 Oct 2003116

29 May 2003109

18 Aug 2003108

17 Sep 200370

14 Oct 200366

11 Nov 200361

18 Jun 200360

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.

← 30 Oct 2003 4 Nov 2003 →

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Max Kp 8+, Ap 116: No. 115 of 34,615 days since 1932 by Ap.